建筑外文翻譯---基于圖解的鋼筋混凝土建筑物多級施工計劃法-建筑結(jié)構(gòu)-全文預(yù)覽
【正文】 However, assuming that all activities are independent, the CPM does not take into consideration the resource reuse where there is repetition of identical activities on every floor. O’Brien (1975) proposed that highrise building be divided into two categories: (1) nonrepetitive works, such as earthworks, foundations, and nontypical floor plans。 accepted 4 March 2021 In Taiwan, contractors are being specialized in certain types of construction in an increasingly petitive environment and this specialization requires some scheduling models to provide better scheduling results for each type of construction. A new practical method, GraphicalBased Multistage Scheduling Method (GMSM),for scheduling RC building superstructures is presented herein. From the analysis of characteristics and construction custom of RC buildings, four constraints, (a) down–up construction, (b) building inspection, (c) reuse of beam forms, and (d) reuse of slab forms, can be established. The GMSM is developed utilizing a graphicalbased method and the concept of resource reuse, and the general form of the GMSM to be facilely implemented in any worksheet software is derived as well. The results of this study provide some quantitative information as a useful guide for scheduling RC building superstructures. Keywords: Multistage scheduling, repetitive project, RC building, GMSM Introduction In Taiwan, contractors are being specialized in certain types of construction in an increasingly petitive environment and this specialization requires some scheduling models to provide a better scheduling for each type of construction. The majority of highrise buildings located in urban areas in Taiwan are RC structures. It is deemed crucial for highrise buildings that a scheduling model for this type of construction can not only increase profits but also reduce the impact on urban traffic. Of the highrise buildings constructed to date, the work planning technique has been 山東建筑大學(xué) 畢業(yè) 設(shè)計 外文文獻及譯文 2 monly adopted in scheduling. The Critical Path Method (CPM) is the most popular one。 Russell and Caselton, 1998), dynamic programming (Selinger, 1980。 ElRayes and Moselhi, 2021), simulation (Halpin, 1977 (CYCLONE)。 Lutz et al., 1994。 (2) starting any activity on any floors must wait for the pletion of the same activity on the previous floors。 (3) erecting wall and column forms, and setting wall reinforcements。 and (7) pouring concrete, as shown in Figure 1(b). In Figure 1, the symbols Wi and Di used in this study represent each activity on floors and its duration, respectively. Because both the activities of layout of structure members and pouring concrete (requiring more professional skill and pump cars though) take shorter durations than do others, contractors usually subcontract these two jobs to reduce costs. The rest of the activities are performed by form and rebar workers. Constraint for scheduling From the work flow as shown in Figure 1 for the scheduling process of RC building superstructures, it is required to consider not only the input of the resource (. the least labor bination) and constructability (the least work space) for each activity on a typical floor, but 山東建筑大學(xué) 畢業(yè) 設(shè)計 外文文獻及譯文 6 also three factors: (1) down–up construction, (2) regulations of building inspections, and (3) form reuse, of which a
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