| 框支网格式轻质墙板结构受力性能及抗震设计 |
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| 作者姓名： | 贾穗子 曹万林 袁泉 |
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| 作者单位： | 中国地质大学工程技术学院,北京,100083;北京工业大学建筑工程学院,北京,100124;北京交通大学土木建筑工程学院,北京,100044 |
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| 基金项目： | 北京市博士后工作经费资助项目(2015ZZ-29)国家自然科学基金(青年基金)资助项目(51508009)“十二五”国家科技支撑计划资助项目(2015BAL03B01) |
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| 摘 要： | 基于框支网格式轻质墙板结构抗震性能试验,量化分析结构受力性能,并提出抗震设计建议.洞口侧构造柱的设置弥补了开洞造成的强度衰减,有利于提升墙体的安全储备能力,但加重了墙体后期破坏程度,同时降低其修复能力.斜交肋格的构造形式改变传力途径,使得墙体强度退化趋于均匀,结构具有更好的变形恢复能力,且明显减小墙体的破坏程度,但是整体安全储备能力改善不大.在工程设计方面,建议转换层初始刚度比取值范围大致在1.3~1.6,由于受力过程中结构转换层刚度比衰减较明显,在设计时初始刚度比可适当高些.结构在各个受力阶段的层间位移和层间转角值均在安全界限值以内,进一步说明结构具有较高的抗倒塌能力,耗能减震性能良好.
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| 关 键 词： | 轻质墙板 受力性能 抗震设计 刚度比 |
| 收稿时间： | 2015-08-19 |
Mechanical behavior and seismic design of a frame-supported grid-mode lightweight slab structure |
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| Affiliation: | 1. School of Engineering and Technology, China University of Geosciences, Beijing 100083, China;2. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;3. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China |
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| Abstract: | Based on seismic performance tests on frame-supported grid-mode lightweight slab structure(FSGL slab structure) specimens,the mechanical behavior of the structure was quantitatively analyzed and seismic design suggestions were put forward. The results showed that constructional columns for the both sides of an open hole compensated for strength degradation caused by the hole,improved the safety-reserved capacity of the wall,but increased the damage degree of the wall at the late stage and deteriorated the repairable capacity. The oblique frame-grid design was able to change the way of transmission-loading to make strength degradation more uniform and let the structure have a better deformation recovery ability,and this design could obviously decrease the damage degree of the wall,but the overall safety-reserved capacity was not much improved. In engineering design,the proposed initial stiffness-ratio range of the transfer layer was approximately 1.3 to 1.6. Due to an obvious decrease in stiffness-ratio of the transfer layer under loading,the initial stiffness-ratio should properly increase in the design process. The displacement and angle values between inter-layers are within the safety limits,indicating that the structure has good collapse-resistant capacity and energy dissipation performance. |
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