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load Distribution Assessment of reinforced Concrete Buildings During Construction with Structural Characteristic Parameter Approach

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Tsinghua Science and Technology 2009年第6期14卷 746-755页

作者：方东平席海峰王晓明张传敏赵挺生 School of Civil Engineering Tsinghua University Urban Systems Program CSIRO Sustainable EcosystemsCommonwealth Scientific and Industrial Research Organisation(CSIRO) Henan Development and reform Commission School of Civil Engineering and Mechanics Huazhong University of Science and Technology

High-rise reinforced concrete buildings are in great demand in developing countries with rapid urbanization. Construction engineers are facing more and more safety control challenges. One major issue is the understanding of the load distributions, especially the maximum slab load, of structures under construction, which is time dependent. Previous methods were mainly targeted to specific examples, providing specific solutions without addressing the fundamental issues of finding general solutions for load distributions in reinforced concrete buildings with different geometrical and material characteristics during construction. The concept of a structural characteristic parameter is used here to parametedze the main geometrical and material characteristics of concrete structures for generalized assessments of load distributions during construction. The maximum slab load for 20 different construction shoring/reshoring schemes is presented. The results indicate that the traditional simplified method may underestimate or overestimate the maximum slab load, depending mainly on the shoring/reshoring schemes. The structural characteristic parameter approach was specifically developed to assist construction engineers to estimate load distributions to assure safe construction procedures.

关键词： reinforced concrete buildings construction load re-distdbution structural characteristic parameter: slab-shore interaction

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