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Development of New Structural System for Buildings Suited to Social System Considering Stock Management

考虑库存管理的适合社会制度的新建筑结构体系的开发

基本信息

批准号：
14550566
负责人：
KURAMOTO Hiroshi
金额：
$ 2.37万
依托单位：
Toyohashi University of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

In order to realize simplification and cost reduction in construction works for SRC structures, concrete encased steel structures consisting of only steel and concrete, hereafter.referred to as CES structures, have been proposed by the authors. In the feasibility study to examine the structural performance of CES columns, it was conformed that damages of the columns with an increase of lateral deformation can be reduced by using high performance fiber reinforced cementitious composites, HPFRCC, instead of normal concrete. Moreover, the hysteretic characteristics of the CES columns were almost the same as those of SRC columns. However, significant reduction of the initial stiffness in the shear-drift relations and the development of drying shrinkage in the cover concrete were observed in the CES columns due to use of HPERCC without aggregates. In addition, the production and casting of HPFRCC were very difficult due to less workability.In this study, use of fiber reinforced concrete, FR … More C, for CES columns has been planed to solve the above-mentioned problems in the columns using HPFRCC. In the 2002 fiscal year, proportioning tests of FRC using three types of fibers were conducted to obtain appropriate one for both the construction works and structural performance of CES structures. Then, using FRC selected from the proportioning tests, a total of tree CES columns were tested to investigate the structural performance and compare with the columns using HPFRCC. In the 2003 fiscal year, then, three CES columns using FRC were tested to investigate the effect of the level of axial force applied on-the seismic performance of the columns.From these tests, the following conclusions are obtained.1)CES columns using FRC have almost the same structural, performance as SRC columns which possess an excellent earthquake resistance with high capacities and deformability.2)The use of FRC make the easy restoration of CES columns possible because the damages in cover concrete of the columns due to flexural and shear cracks are relatively light even at the large story drifts.3)CES columns using FRC is practical in the aspects of not only the structural performance but also the construction workability because the FRC can be easily produced by real concrete mixers. Less

为了实现SRC结构施工的简化和降低成本，作者提出了仅由钢和混凝土组成的混凝土外包钢结构（以下简称CES结构）。在可行性研究中，以检查的结构性能的CES柱，它被证实，损坏的柱与横向变形的增加，可以减少使用高性能纤维增强水泥基复合材料，HPFRCC，而不是普通混凝土。此外，CES柱的滞回特性与SRC柱的滞回特性几乎相同。然而，显着减少的初始刚度的剪切漂移的关系和发展中的保护混凝土的干燥收缩，观察在CES列由于使用HPERCC无骨料。此外，由于工作性较差，HPFRCC的生产和浇注非常困难。 ...更多信息为解决上述问题，本文提出了一种新型高效毛细管柱的设计方案。在2002财政年度，使用三种类型的纤维进行FRC的配比试验，以获得合适的一个既为建筑工程和结构性能的CES结构。然后，使用从配比试验中选出的FRC，对共三根CES柱进行了试验，以研究其结构性能，并与使用HPFRCC的柱进行比较。在2003年对3根采用FRC的CES柱进行了轴力水平对柱抗震性能影响的试验研究，得出以下结论：1）采用FRC的CES柱具有基本相同的结构性能，性能与SRC柱一样，具有优异的抗震性能，具有高承载力和变形能力。2）FRC的使用使得CES柱的容易恢复成为可能，因为即使在大的层间位移下，由于弯曲和剪切裂缝引起的柱的保护混凝土的损坏也相对较轻。3）采用FRC的CES柱不仅在结构性能方面是实用的，而且施工和易性方面也是实用的，因为FRC可以容易地由真实的混凝土搅拌机生产。少