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12th International Conference on Advances in Steel-Concrete Composite Structures (ASCCS 2018)

第十二届钢-混凝土复合结构研究进展国际会议(ASCCS 2018)

Universitat Politècnica de València, València, Spain, June 27-29, 2018

Robustness of Prefabricated Prefinished Volumetric Construction(PPVC) High-rise Building

装配式预制体结构(PPVC)高层建筑防止连续倒塌性能研究

Y. S. Chua /a*, J. Y. R. Liew /a,b and S. D. Pang /a

a Department of Civil and Environmental Engineering, National University of Singapore, Singapore

b College of Civil Engineering, Nanjing Tech University, Nanjing, China

Abstract摘要

Due to the safety awareness arisen from natural and human-caused disasters, robustness design of building is increasingly important to ensure the stability of the building and to prevent progressive collapse. For this reason, the robustness design of innovative construction technologies such as modular construction may be essential due to its relative novel structural form and numerous joints among modules. Particularly in Singapore,Prefabricated Prefinished Volumetric Construction (PPVC) has been highly promoted in residential and commercial buildings, hostels and hospitals to boost the construction productivity and quality as well as to reduce the reliance on foreign workforce. PPVC offers high quality and efficiency because most of the finishes and mechanical and electrical services are manufactured and installed together with the modules in factory, before sending for on-site assembly. To maximize the productivity of PPVC, modular design standardization and repetition can be improved by going for high-rise. Nonetheless, there are limited studies on the robustness of PPVC high-rise building and its behavior under progressive collapse remains uncertain. Therefore, this paper investigates the robustness of steel PPVC high-rise building under column removal scenarios by conducting non-linear numerical analysis. The effects of joint design and diaphragm action between modules are studied to ensure continuity of horizontal and vertical tying. This paper provides insight on the behaviour and alternative path for load transfer under column removal scenario for future design guideline of robustness PPVC building.

由于人们对自然灾害和人为灾害的安全意识越来越高，建筑的稳定性设计对于保证建筑的稳定性和防止建筑的连续倒塌显得越来越重要。因此，模块化等创新性施工技术的稳定性性设计，由于其相对新颖的结构形式和模块之间众多的节点，可能是必不可少的。特别是在新加坡，预制预制体施工(PPVC)已在住宅和商业建筑、旅馆和医院得到高度推广，以提高施工生产率和质量，并减少对外国劳动力的依赖。PPVC提供了高质量和高效率，因为大多数的表面处理和机电服务是在工厂与模块一起生产和安装的，然后再发送到现场组装。为了使PPVC的生产效率最大化，可以通过高层建筑来提高模块化设计的标准化和重复性。然而，对于PPVC高层建筑的稳定性研究有限，其在渐进倒塌下的行为仍不确定。因此，本文采用非线性数值分析的方法研究了PPVC钢高层建筑在脱柱场景下的鲁棒性。研究了连接设计和模块间膜片作用的影响，以保证水平和垂直连接的连续性。本文为今后PPVC建筑的稳定性设计提供了一种思路，即在去柱的情况下，荷载传递的行为和路径选择。

Keywords: Modular; High-rise; Robustness; Column removal; Pushdown.

关键词:模块化;高层建筑;稳健性;列删除;下推。

1. Introduction简介