2.1 Introduction

Optimization modeling for construction supply chain with third-party logistics

partnership: In order to achieve thesis objectives 2.1 (developing an optimization model for CSC operations with TPL partnership) and 2.2 (using the proposed model to assess the efficiency of the TPL employment), we apply a process including three minor steps: (1) CSC modeling and optimization, (2) model validation, and (3) managerial implications. The process of this step is presented in Figure 0.6

Construction supply chain modeling and optimization: For the first step, we define the relevant issues: assumptions, executive objectives, and constraints. The assumptions for modeling and optimization of the operations of the CSC network with TPL partnerships are made to define a scope that the model works for. The executive objective of the model takes into account the optimization for the construction logistics costs. The logistics costs are often estimated by considering the componential costs: ordering cost, transportation cost, storage cost, and material checking cost. In this model, we consider the subsequent constraints: uncertain price, safety stock, inventory status, and SC trade-off issues. The details of this step are structurally presented in chapter 2. Model validation: For the second step, in order to validate the proposed model, a hydropower construction project is illustrated. Besides, so as to think about the efficiency of the proposed model, we compare the results obtained from three models: the TPL model with price discounts, the TPL model without price discounts, and the model without TPL. Then, the analyzes of impacts of uncertainties (delivery lead-time, demand, and price) on total SC costs are conducted to supply managerial implications for SC improvement. The sensitive analyzes also are done to think about how the entire SC cost is sensitive to changes in price discounts offered by suppliers. The details of this step are presented in chapter 3.

Managerial implications: Finally, for the third step, the managerial implications are given for CSC operations with the TPL integration in order to enhance the logistics performance. We have relevant recommendations for the key SC actors: the owner, the TPL provider, the contractors, and suppliers. The details of the managerial implications are presented in chapter 3.

1.7 Thesis outline

The rest of this thesis is structured to present how the research objectives are achieved as follows:

Chapter 2 presents the results of the identification of the present focuses and discusses the future directions of decision-making in construction logistics and SCM. The results

highlight that SC integration is the future trend in SCM application for the construction industry. Besides, the application of technology, such as BIM, is also suggested for the improvement of construction logistics and SC performances. To enhance CSC integration, a TPL partnership is proposed for CSC operations.

Chapter 3 develops an optimal model for CSC with a TPL partnership, which takes into account the two kinds of purchased materials: type 1 (materials can be transported to a warehouse or directly sent to the construction site), and type 2 (materials can be directly sent to construction site only). The optimal solution provided by the model can assist the decision-makers in determining the operational strategies for common tasks in construction SCM: supplier selection, determination of order quantity, and consideration of the efficiency in using TPL. The proposed model also facilitates the construction managers to take advantage of the TPL warehouse to order a larger quantity to obtain lower prices and transportation costs per unit offered by suppliers. Finally, the conclusions summarize all the achievements of this thesis: research contributions, main findings, managerial implications, research limitations, and further researches

1.8 Research contributions

Article 1 (introduced in Chapter 2): This paper uses a methodical writing survey approach to recognize the present concentrations and talk about the future bearings of dynamic in development SCM. The outcomes show that, as of now, the development SCM applications are as yet zeroing in on material and assets the board with interior SC coordination. Vital choices identified with building associations, IT-based arranging, and co-ordinations based arranging are not directed at the beginning phase of preparation and plan. For future patterns in development SCM application, a system is proposed to use the three significant focuses: the cooperative arranging and plan with cutting edge methods; the lean acquirement with BIM and TPL; and the utilization of BIM in development activities and conveyance. The first commitment of this paper is the endeavor to recognize CSC choices and proposes how they ought to be conveyed during the periods of a development project with the utilization of fitting SC strategies and apparatuses.

Article 2 (introduced in Chapter 3): Previous investigations affirm the advantages of utilizing Third-party co-ordinations (TPL) for proficient administration of development coordinations. In any case, there is an absence of dynamic models and devices to assess the specific job that can play a TPL supplier as a driver for the store network (SC) coordination and advancement. Consequently, this examination intends to foster a dynamic model for development production network (CSC) streamlining with conceivable TPL joining. The proposed model considers two kinds of bought materials. Type-1 materials can be moved to the stockroom claimed by the TPL or straightforwardly shipped off the building site. Type-2

materials are shipped off the building site as it were. For this situation, the advancement model helps leaders in deciding the operational techniques in development store network the executives (CSCM), including provider choice, TPL reconciliation, and stock strategy assurance. The proposed model helps development directors to exploit the TPL distribution center and request bigger amounts if essential, to acquire lower costs offered by providers and decrease the transportation cost. Utilizing the mathematical case model, we track down that the proposed model performs better outcomes in absolute SC cost in examination with the CSC model without TPL. This infers that the enhancement model for the coordinated CSC activities with TPL association can be utilized to improve the development coordinations execution and manage the functional necessities of the recent concerns in the development business.

CHAPTER 2 PRESENT FOCUSES AND FUTURE DIRECTIONS OF DECISION-MAKING IN CONSTRUCTION SUPPLY CHAIN MANAGEMENT: A SYSTEMATIC REVIEW

Phuoc Luong Le a, Walid Elmughrabi a, Thien-My Dao b, Amin Chaabane a a Department of Systems Engineering, École de Technologie Supérieure, 1100 Rue Notre-Dame West, Montreal, Quebec, Canada H3C 1K3 b Department of Mechanical Engineering, École de Technologie Supérieure, 1100 Rue Notre-Dame West, Montreal, Quebec, Canada H3C 1K3 Article published in International Journal of Construction Management, October 2018.

Abstract:

This paper uses a logical writing survey philosophy to detect this concentrations and examine the more drawn out term bearings of dynamic in development store network the board (CSCM). The outcomes show that, as of now, the CSCM applications are as yet zeroing in on material and assets the executives with the inward SC (production network) mix. Key choices identified with building associations, IT-based arranging, and coordinations based arranging are not led at the beginning stage of preparation and plan. For future patterns in CSCM application, a structure is proposed to use the three significant focuses: the community arranging and style with cutting edge strategies; the lean obtainment with BIM and 3PL; and the utilization of Lean and BIM in development tasks and conveyance. The first commitment of this paper is that the endeavor of distinguishing CSC choices and recommends how they should be conveyed during the periods of a development project with the utilization of suitable SC strategies and devices.

keywords: development production network the executives; present centers; future bearings; choosing.

2.1 Introduction

The idea of Supply Chain Management (SCM) has been progressively applied to numerous mechanical areas to improve business execution, for example, quicker reaction to the assortment of client requests, lower cost, and better quality. In development, the use of SCM ideas is oftentimes used to direct extend administrators in essential wanting to accomplish associations with providers, and get more effectiveness in operational development (Azambuja and O'Brien 2009). In any case, the significance of SCM in improving development the executives has been perceived since the 1990s. Papers in this particular period generally talked about the questionable issue that if SCM ought to be applied for development industry because of its various attributes from the assembling area. Until the 2000s, research examines zeroed in on the examination and consequently