（1 中国建筑标准设计研究院有限公司， 北京 100048；2 清华大学土木工程安全与耐久教育部重点实验室， 北京 100084）

［摘要］提出一种新型预制墙边缘构件竖向钢筋配筋及连接构造，即在边缘构件最外侧配置主要受力竖向钢筋，内侧配置构造钢筋并与附加连接钢筋间接搭接，设置构造钢筋后边缘构件箍筋及拉筋布置与现浇墙保持一致，以保证边缘构件混凝土的受压性能。同时建议了预制墙边缘构件竖向连接钢筋与现浇墙边缘构件竖向钢筋的替代原则。分析表明，在墙肢平面内受力性能基本接近的基础上，采用该新型构造预制墙的竖向钢筋及接头成本低于边缘构件竖向钢筋逐根连接的预制墙，且预制墙加工、安装精度要求较低，提出的新型边缘构件构造具有可行性；相较边缘构件竖向钢筋单排附加钢筋连接的预制墙，该新型构造预制墙具有较好的平面外受力性能及经济性。

［关键词］预制剪力墙； 边缘构件构造； 受力性能； 成本

中图分类号：TU375, TU756文献标识码：A文章编号：1002-848X(2019)11-0014-06

Analysis on mechanical behavior and cost of precast shear walls with novel reinforcement details

Han Wenlong1, 2, Zhao Zuozhou2, Xiao Ming1, 2

(1 China Institute of Building Standard Design & Research, Beijing 100048, China; 2 Key Laboratory of Civil Engineering Safety and Durability of China Education Ministry, Tsinghua University, Beijing 100084, China)

Abstract:An innovative reinforcement and construction detail for boundary element longitudinal rebars of precast shear walls was proposed, in which the primary carrying longitudinal rebars center on the outside of boundary element, while the secondary constructional longitudinal rebars are located at the inside of boundary element and are indirectly lapped by single additional spliced rebar. The layout of stirrups and crossties in boundary elements of precast walls is similar to that of cast-in-situ walls by employing constructional longitudinal reinforcement, enhancing the compression performance of concrete in boundary elements. A substitution principle between the spliced boundary element longitudinal rebars of precast walls and boundary element longitudinal rebars of cast-in-situ walls was proposed. The analysis indicates that on the basis of achieving similar in-plane mechanical behavior, precast walls with the above-mentioned innovative detail achieve lower cost of vertical rebars and rebar splices, as well as lower accuracy requirement for the prefabrication and installation of precast walls, compared to precast walls with boundary element longitudinal rebars spliced one by one. Compared with precast walls with boundary element longitudinal rebars spliced by single-row additional spliced rebars, precast walls with the above-mentioned innovative detail exhibit better out-plane mechanical behavior and economic efficiency.

Keywords:precast shear wall; details of boundary element; mechanical behavior; cost

*国家重点研发计划资助（装配式混凝土结构高层住宅产业化技术体系研发、优化2016YFC0701901））。

作者简介：韩文龙，博士，工程师，Email: hanwenlong9122@163.com。