Zhang Zhijiao Portfolio before 2023

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CONTENTS 03 02 01 04 05 06 07 Other Works -Crescent Moon near Bamboo 05/2019 -Wood Construction Work 07/2022 -Infinity 04/2018 -Cliff City 02/2019 Carbon Ferbercation Carbon Fiber Furniture 10/2020 Boundary Students Center Design 06/2020 Yangzi River Urabn Front Desk 3D Printing on Mold 03/2021 FELID STATION Pavilion Design(Space Frame) 09/2022 The Mixs Spatial 3D Printing 05/2021 Past, Present, and Future of Rails Urban Design 08/2020

BOUNDARY

Academic Work / Individual Work

2020.1-2020.6, 6 months

Instructor: Liu, Hongyun Graduation Project Rework

2020 Fall

This project is designed as an open activity center for teachers and students in the school, surrounding native residents, young makers who have just graduated, tourists, students taking postgraduate entrance exams, and other students.There is not only the demand of teachers and students for learning space and discussion space, but also the demand of people around for public space.In addition, it can provide a variety of options and services for many tourists and students who are attracted by the reputation of visiting and auditing. At the same time, as a member of the city, the school, in order to break the single closed boundary between the city and the campus, responds to the negative image of the campus on the urban interface, and creates community relations, thus inspiring us to explore the boundary relations of different states.

Note: This project, site at Southeast Univiresity, Nanjing, Jiangsu, China.

01

Generation Process

As shown in the figure above, the building block is generated in four general steps.

Site Analysis

The site is located in Nanjing, Jiangsu. The above drawings shows the location of the site and the surrounding site information on a larger and smaller scale respectively.The site is in the canteen of Southeast University, and it surrounding with the boundaries of different states.The site is very suitable for a building that responds to different boundary states.

Population Analysis

This project is designed as an open activity center for the students and teachers in the school, the surrounding native residents, tourists, postgraduate students and so on.It not only meets the needs of teachers and students for learning space and discussion space, but also meets the needs of the surrounding people for public space.

Generation Process

As shown in the figure above, the building block is generated in four general steps.

Axonometric Drawing

The image above shows the overall shape and function of the design, as well as the specific application scenarios of the “glass box” and “black box”.The “glass box” is primarily used as a student event space, while the “black box” is open to the community for sale, display and useOther activities.Walls can also be used for art displays.

30mm anticorrosive wood floor

40mm steel studs

50mm leveled cement mortar

50mm fine concrete

120mm corrugated steel floor

80mm glass wool insulation layer

750mm perforated steel beam

2 x 12.5mm wood ceiling

composite floor board

80mm Insulation

80mm fine concrete

120mm corrugated steel floor

80mm glass wool insulation layer

750mm perforated steel beam

2 x 12.5mm wood ceiling

laminate wood flooring

80mm fine concrete

rammed earth

earth

Interior View

The facade of the building is wrapped around solid walls by a layer of translucent material, giving the building a lightsome appearance.During the day, light enters through the doors and windows, providing natural light for the exhibition, while at night, light enters the interiorThrough the door, illuminating the void.

Past, Present, and Future of Rails

Academic Work / Individual Work 2020.7-2020.9, 3 months

Urban Design

Instructor: Harry lee; Ting Yin

Location: Hangzhou

The large number of single uses in the city all have the same aspect. The intersections between one single use and another form the intersections that often harbor destructive forces in cities.A junction zone -- a large single-use area -- forms the edge of the «normal» area of the city.Often, the borderline is thought of as a negative object, or simply a borderline.But, in fact, the border zone can play a positive role.A railroad track is a typical example of a junction.

The old railway tracks in Hangzhou played a positive role in promoting the urban development in the early stage. However, with the development of the city and the continuous expansion of the urban area, the railway tracks gradually become the existence of dividing the city and hindering the development of the city. Therefore, it is assumed that after the disappearance of the single railway tracks, what changes will occur to the original space?

02
Note: This project, This project, named Open Project 130, is finished at Studio Alpha in Shanghai, China.

1949 1912 1981 2000

When Hangzhou Railway Station was completed, the scale of Hangzhou city was small, mainly on the east side of West Lake. The railway served as a connection between Hangzhou and other city

Later, after the the founding of the people’s Republic of China, Qiantang River Bridge had completed and Across the Qiantang River.

Through the Great Cultural Revolution, most of China’s urban city developed most stagnent. After the catastrophe, Hnagzhou’s two regions began to develop toward each other.

Noedays, the expressways and subway have repalced the original railway in connecting the two stations. The new high-speed rail line fuether pushed the old railroad tracks to be abandoned.

PROCESS
SITE
City On Rail City Connection Rail On City City On Gird

Hangzhou Railway Station

One side of the site is dominated by a large office building and commercial complex, which is surrounded by a relatively high-grade residential area. The other side is mainly a densely inhabited urban village. After the reconstruction, it is hoped that it can provide employment for the residents of the urban village, as well as an entertainment place for the workers, as well as an urban park.

Hangzhou Railway Brigade clothing shop

One side of the site is backed by the mountain forest, and the site itself is the maintenance place for the train. On the other side of the site is a dense residential area. After the reconstruction, it is hoped that the function can provide a leisure center for the surrounding residences, and also serve as a bridge connecting the residences with the scenic spot.

Qiantang River Bridge

One side of the site is dominated by a large office building and commercial complex, which is surrounded by a relatively high-grade residential area.The other side is mainly a densely inhabited urban village. After the reconstruction, it is hoped that it can provide employment for the residents of the urban village, as well as an entertainment place for the workers, as well as an urban park.

Hangzhou High-tech Software Park

One side of the site is dominated by a large office building and commercial complex, which is surrounded by a relatively high-grade residential area. The other side is mainly a densely inhabited urban village. After the reconstruction, it is hoped that it can provide employment for the residents of the urban village, as well as an entertainment place for the workers, as well as an urban park.

Traffic Space Movement Boxes Site

FELID STATION

Academic Work / Team Work

2022.01-2022.09, 9 months

Personal Contribution: concept, model, joint design design, Structure Design, drawing, fabrication, Digital Fabrication Fabrication, Production, etc Work in DESIGN + MAKE Programme, AA, Hooke Park, UK

This project is the result of a year of study in the AA design & make programme. Our group focused on the study of the space frame canopy node joint and the overall structure, digital fabrication, the structural design of the buffer space and the study of the space glulam. We hope that the field station will bring the students› working space from the workshop back to the surrounding nature, providing a venue for lectures or sketching workshops, as well as a performance venue for nature and a resting place for visitors passing by; our personal focus is more on digital design, robotic fabrication and space frame design. My focus is more on digital design, robotic fabrication and the design of the space frame. The nodes of the space frame have undergone 4 versions and the whole structure has undergone 5 designs and adjustments before reaching the current final version.

Note: This project, complete in DESIGN + MAKE Programme, AA, Hooke Park, UK

03

FINAL DESIGN_Plan

Feild Station Live DrawingCampingObserving Forest

The site is situated at the junction of the main road through the forest, giving people a very good view of it from all sides, and there is a recently planted compartment on the opposite side of the site where the field station will be watching the growth of the forest for the next 10, 20 and 50 years.

AMBITIONS

FINAL DESIGN_Section

13 COMPARTMENT 5 COMPARTMENT 8
COMPARTMENT
B B Q
The site is situated at the junction of the main road through the forest, giving people a very good view of it from all sides, and there is a recently planted compartment on the opposite side of the site where the field station will be watching the growth of the forest for the next 10, 20 and 50 years.
SITE RESEARCH

PROTOTYPE DEVELOPMENT

SpaceFrame & Roof Exploration

Experiment with different roof forms

Experiment with the space frame structure for different roof forms

PROTOTYPE OF SPACE FRAME

Prototype Ⅴ

advantages

ease of assembly - fewer parts at each node

Reuse existing 60 braces

Current Design

block at top and bottom braces bear on chord and block block at top and bottom braces bear on chord and block

single block at top braces bear on chord and block

SPACE FRAME CONPONENT DETIAL

single block at top braces bear on rod, chords, and small block

advantages use complete surface area of cut for bearing at braces

disadvantages more unique parts recut braces to new size small block will be brittle

In order to ensure that the bracing is at 45°, the joint on the bracing side is modified at the suggestion of ARUP (Last drawing by ARUP)

There are a total of 3 different keystones in the entire structure

Keystone Chord Braket Bracing Rod System
Arup Update

MATERIALS RESEARCH

ROBOTIC FABRICATION

The cutting steps of bracing can be roughly divided into three steps, facing` cutting, joint cutting and tongue cutting

Visual System Circular Saw
FACING CUTTING TENON CUTTING SHOULDER CUTTING TOOL PATH TRUNK CROWN PRIME TIMBER BRANCH BEECH WASTE MAKE USE, NOT WASTE Forest residue consists of 7cm or less diameter branch timber and is the primary building material deployed in the space truss system. This found material constitutes up to 60% of volume in broadleaf trees and roughly 20% in conifers. Although this accounts for a substantial portion of the raw material, this timber rarely makes it to market. If it does, it is chipped and sold as biofuel, losing its inherent structural characteristics. Material waste calculations rarely consider this timber as waste as it does not have a viable consumer market yet. Instead, it is left on the forest floor.
Feed Station
Gripper

Spatial Printing

Professional Work / Team Work 2021.2-2021.4, 3 months

Personal Contribution: Print process research, Algorithm Optimizationwing, Manufacture

Work in ROBOTICPLUS.AI (Shanghai) Co., Ltd

The project is to design and build a landscape art installation for Shanghai Wanxiang City, which is intended to be a landmark structure through which visitors can feel or be reminded of nature, where people can socialise and pause, and where new techniques of digital construction and new materials are used to achieve the goal of materials that are resistant to ageing and easy to maintain.

Note: This project, complete in ROBOTICPLUS.AI (Shanghai) Co., Ltd, Shanghai, China.

04

Material Test

//The individual thickness of the /3D printed samples is not uniform and the maximum tensile load varies from 400N to 1000N. The design should not be based on the 850N provided by the material supplier. The design should control the tensile force in a single bar to not exceed 400N. The design should control the tensile for the bar at 25MPA 400N deformation of about 4mm.

//Printing base found after playing three circles to go to the middle curve there is a collision phenomenon caused by the base and the plane paste is not firm

//Printing of the base was OK, but it was found that the beginning and the end of the curve of the column were not firmly pasted.

//The first part of the column does not stick

//The chassis will shake.

// height difference between the second and third layers when going round, resulting in badly shaped direct interference dots

// The first layer is a little short in time, resulting in poor adhesion and loosening of the material.

Due to the limitation of the working range of the robot arm, we divide the entire form into different small blocks in the whole program, first through the program to generate the print path of each block, and then choose different print settings for the print path, combined with the characteristics of the material, we get the most effective tool path at present

TOOL PATH

Print Path Generation

( X1, Y 1, Z1 ) Extruder On Wait 0 6s Point 1 Point 2 ( X2, Y 2, Z2 ) Extruder: Off ( X4, Y 4, Z4 ) Point 4 ( X5, Y 5, Z5 ) Extruder: off Point 5 ( X6, Y 6, Z6 ) Point 6 V1= 600mm/ s V2= 300mm/ s

The project will be in Shanghai for two years and will interact well with the surrounding residents as an art installation

Photographed in the sun; Photographed by Rongsheng

Yangzi River Urabn Front Desk Printing

Professional Work / Team Work 2021.1-2021.3, 2 months

Personal Contribution: concept, model, drawing, fabrication Work in ROBOTICPLUS.AI (Shanghai) Co., Ltd

This project is to encounter during the period of internship, I mainly several interns are responsible for testing and production by us. Changjiang Front Desk Printing is a practical demonstration of the control and development technology of 3D printing technology for complex forms of Robotics Company. The project has been tested for several months and improved in process and algorithm. And you end up with a perfect result.

At the same time, the technology of integrated printing of curved surface molds is also the first attempt in the world, and it has also applied for a national patent; the project team has been exposed to the tilt printing technology from the beginning, gradually improved the printing parameters and the setting of the points, and completed the integrated printing molding, which solved the problem of nozzle equipment, movement trajectory and A summary of the experience of forming textures, a variety of printing methods were discussed at the same time in the project, the advantages and disadvantages of different printing methods, and the feasibility of technical improvement methods were studied.

Note: This project, complete in ROBOTICPLUS.AI (Shanghai) Co., Ltd, Shanghai, China.

05

GRP Mold Lamination Calibration

Point Cloud Scanning

Speed Relationship Study

According to the speed stable form of the actual test, we complete the gradual setting of the speed control of the manipulator, and use the advanced morphological algorithm to adjust the speed proportion gradually according to the single circle length

After the actual test, it is found that if the nozzle is 2 mm away from the mold, it is equivalent to an additional 2 mm of material extrusion die, so as to achieve the purpose of precise shape control

dynamicequilibrium Optimum molding temperature Extrusion speed ratio Variable speed printing Device reads file s GRP curved mold printing Large-scale printing with high slenderness ratio Curve point optimization algorithm Inclination determining Cooling equipment Mold positioning Mold positioning Robotic arm limitingv Oblique printing Mold printing Process Parameters All-IN-ONE PRINTING ON CURVED SYRFACE Advantages and technical difficulties of integrated printing with curved surfaces Model Optimization Equipment Adjustment Curve point optimization Laser
Actual running path of robot arm
speed 0.1m/sec% 30-40-50 50-60 60-70 20-30-40-50

Slice Tilt Angle Research

Robot speed: 1.5-2 cm/s layer high: 2.5 mm

Temperature(℃) Inlet: 200 Middle: 230 Extrusion: 180

1. Because of the low temperature of the extruded material, the adhesion between the layers is not strong, and there may be local warping phenomenon;

2. After increasing the extrusion amount and increasing the outer surface temperature, the printing material is smooth, but due to the extrusion speed is too fast, some parts are expected to fold outward, but considering the phenomenon of non bonding before, we try to control whether the pressure can reduce the fold by changing the layer height

J

Robot speed: 1 cm/s layer high: 3.5 mm

Temperature(℃) Inlet: 200 Middle: 230 Extrusion: 205

3. it is found that the extrusion pressure will show the uneven periodicity and the texture will be complex and uncontrollable when the surface is not fully contacted;

Robot speed: 1 cm/s layer high: 2.5 mm

Temperature(℃) Inlet: 200 Middle: 220 Extrusion: 205

4. Finally, on the basis of fixed stable layer height, consult the data to make the extrusion material hot outside and cold inside, which can maintain stable expected texture printing;

1. The end of the closing causes neutrality to collapse this part like the middle due to the approach to the middle

2. Unable to seal the closing segement

However, according to the actual test results, if the overhang is too large, there is no sticking place, so the printing path line and slicing method need to be optimized

The second stage tests the effect of the experimentuneven texture distribution

to the slice tilt angle

the layer height B

to the length of the straight section of the extruded silk material

the nozzle diameter θ :is the tilt angle.

The experiment results of stage 4 test - uniform texture meets the printing effect and the use requirements· We refer to the relevant literature on the optimal printing angle and calculate the optimal printing angle according to the model. According to the direction of the model, we set the program detection point at the position of the maximum curvature, and constantly calculate the maximum tilt angle. Finally, we get the cantilever that can be printed without danger.

1. The original model curvature is too large to articulate

2. Small starting area and starting plane heating plate bonding is not enough

45 0 90 Slice Tilt Angle Region I Region II Optimal Curve Region III rizontal slicing t=0.3 t=0.2 t=0.15 t=0.25 t=0.1 Overhang Angle Starting Segment Middle Segment Ending Segment PROBLEMS PROBLEMS PROBLEMS SOLUTIONS SOLUTIONS SOLUTIONS Adjustment model Double-layer path Double-layer path Change Print Angle Flip Shape 45 75 30 60 15 65 50 80 70 55 85 75 60 90 θ :refers
t :is
:refers
:is
d
2 1 1 2 3
3

PRODUCT1: Strating Segement

PRODUCT2: Middle Segement I

PRODUCT3: Ending Segement I

PRODUCT4: Ending Segement II

CARBON FIBER

Academic Work / Team Work 2020.10-2020.11,5 weeks

Collabrator: Ma Yifan

Instructor: Kuan-Ting Lai; Zee Leong

Personal Contribution: concept, model, drawing, fabrication

Compared with the independence of traditional landscape structures, this project is based on the study of form, trying to design a system that can be freely spliced and full of variations. In this system, through the splicing of the original form, an orderly and varied form and space can be formed to meet different needs and bring people rich experience. Even in a larger square scale, the combination of various forms can form a larger density and scale of landscape architecture.

We will use carbon fiber as the material to weave a prototype. Carbon fiber is light and strong, and its shaping is a process from soft to hard, with the potential to weave a smoother curve. The use of carbon fiber as a material can avoid the heaviness brought by traditional materials, making the volume more visually light. At the same time, we will also explore the possibility of using the robotic arm for production on a larger scale.`

Note: This project, named Open Project 152, is finished at Studio Alpha in Shanghai, China.

06

Concept

Like molecules, seemingly disordered arrangements actually follow a certain pattern. In this project, we use grids to control and manufacture complex associations based on simple shapes.Cut a rectangular pyramid from a cube and find an edge on each surface to form a space surface. In this way, we can control the splicing of the surface by controlling the splicing of the prism so as to produce more changes in the frame.

Generating Procedure

Form-Finding

The midpoint of the edge of the pyramid is used as the control point, and symmetric curves are selected, so that the surfaces can still be connected when interlocked or rotating.

Select the round arc and splice it to form a more compliant curve.

The curves are kept as low as possible to create more interior space.

(a) (a) (a) (a)

Fabrication Logic

We analyzed the above stress state and used Kangaroo for stress analysis to get the stress line. Then we strengthen the area of stress concentration and get a generally applicable braiding method.

Fabrication Process

Surface Filling

Structure Strengthening

Surface Creation

PROCESS OF FABRICATION

During the project, the lamps is handmade, whereas it can be woven by a robotic arm, controlled by coding, if the protect is put into mass production. The process of handmaking can be roughly categorized into six steps, from assembling the mold to demolding the finished product.

1
3
6
5
Winging Syntax Step
Step 2 Step
Step
Step
Step 4
Force Diagram Stress Analysis Carborn Fiber Carborn Fiber Glass Fiber
Exploded View

Crescent Moon near Bamboo Bamboo Construction Design Team Work 05/2019

The aim of this design is to create a resting pavilion for people to stop in the outdoors. We tried to construct a tensioned structure using the characteristics of bamboo material to form a clear structural system.

Generation Process

07

Other Works

Crescent Moon near Bamboo

Bamboo Construction Design / 05/2019

Water Harvester

Wood Construction Work / 07/2022

Infinity

Cardboard Construction Design / 04/2018

Cliff City

Parametric Design / 02/2019

The idea was how to collect rainwater from the roof of the darkroom and conduct it to the people under the shelf. We chose to treat the inside of the pipe by burning the carbonised surface, so that the carbonised surface can naturally filter and absorb some magazines and harmful substances to produce clean water for human use, and we chose to hang a section of the support, so that the structure on the outside can finally be connected to the original construction.

PLAN
Water Harvester Wood Construction Work Team Work 2022.07.09-2022.07.11

Infinity

Cardboard Construction Design Team Work 04/2018

The purpose of this construction is to create a fun space for children to play in, Considering that the material is hard cardboard board, I adopted the method of origami to increase the structural strength of the cardboard, and to make the cardboard have the variability of linking and stretching. In form, I adopted the Mobius ring as the prototype, hoping to create more diverse spatial experience in a space of less than 10 square meters

Constructure Process

Cliff City

Parametric Design for a game

Team Work 02/2019

This design is an attempt of parametric design. This group of hanging cities is designed as a scene for the game Skyland. The site is on the edge of a cliff, hoping to build a large platform on the cliff wall

Interior View Exterior View

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