（同济大学建筑工程系， 上海 200092）

［摘要］为研究一个2跨2开间的6层预制再生混凝土框架的地震反应，基于有限元软件SAP2000，采用弱化后浇节点截面面积的方法分别建立了节点截面面积为实际节点截面面积1，0.8，0.75，0.7倍的4个三维框架模型。在8度设防地震水准（0.370g，SHW）作用下对各框架模型进行非线性时程分析，并对非线性时程分析计算值与振动台试验值进行了对比分析。结果表明，此类预制再生混凝土框架的后浇节点截面面积弱化系数在0.75～0.8之间选取较为合适。

［关键词］再生混凝土; 预制框架; 后浇节点; 截面面积弱化系数; 地震反应分析

中图分类号：TU528.79，TU317.1      文献标识码：A      文章编号：1002-848X(2014)13-0029-05

Nonlinear seismic response analysis on the precast recycled aggregate concrete frame based on SAP2000

Ding Tao, Cao Ming, Wang Shaohua

 (Department of Building Engineering, Tongji Universtity, Shanghai 200092, China)

Abstract: In order to study the seismic response of a two-bay, two-span and six-story precast recycled aggregate concrete frame, the method of weakening section area of the post-cast joint was adopted to set up four three-dimensional frame models based on SAP2000 finite element software, in which the ratios of joint section area to the actual joint area were 1, 0.8, 0.75 and 0.7 respectively. Comparison analysis of all the frame models were taken between the nonlinear time-history calculation values and simulating shaking table test values under earthquake intensity level 8 (0.370g, SHW). Results show that the section area weakening coefficient of the post-cast joint is suitable around 0.75～0.8 for this kind of precast recycled aggregate concrete frame structure.

Keywords: recycled aggregate concrete; precast frame; post-cast joint; section area weakening coefficient; seismic response analysis

*上海市科委项目（14231201300）。

作者简介：丁陶，硕士研究生，Email：1130461@tongji.edu.cn。

参考文献

［1］HANSEN T C. Recycling of demolished concrete and masonry ［M］. London: E & FN Spon, 1992.

［2］郝彤, 石磊, 陈晶晶. 再生混凝土物理力学性能试验研究［J］. 建筑结构, 2013, 43(1)：73-75.

［3］陈丽华, 肖飞, 柳炳康, 等. 不同轴压比下再生混凝土高剪力墙试验研究［J］. 建筑结构, 2013, 43(9)： 101-104.

［4］JAILLON L, POON C S, CHIANG Y H. Quantifying the waste reduction potential of using prefabrication in building construction in Hong Kong ［J］. Waste Management, 2009, 29(1): 309-320.

［5］肖建庄, 丁陶, 范氏鸾, 等. 预制再生混凝土框架模型模拟地震振动台试验 ［J］. 同济大学学报：自然科学版, 2014, 42(2): 190-197.

［6］GB 50011—2010 建筑抗震设计规范［S］. 北京: 中国建筑工业出版社, 2010.

［7］肖建庄. 再生混凝土单轴受压应力-应变全曲线试验研究［J］. 同济大学学报：自然科学版, 2007, 35(11): 1445-1449.

［8］SCOTT B D, PARK R, PRIESTLEY M J N. Stress-strain behavior of concrete confined by overlapping hoops at low and high strain rates ［J］. ACI Journal, 1982, 79 (1): 13-27.

［9］MANDER J B, PRIESTLEY M J N, PARK R. Theoretical stress-strain model for confined concrete ［J］. Journal of Structural Engineering, ASCE, 1988，114（8）: 1804-1826.