地下侧墙-底板钢筋模块化节点有限元分析  

Finite Element Analysis of Modular Reinforcement Joint of Underground Sidewall-Bottom Slab

作　　者：王天 邹科 暴伟 娄卫校 WANG Tian;ZOU Ke;BAO Wei;LOU Weixiao(Railway Construction South China Construction Co.,Ltd.,Guangdong Guangzhou 510000,China;School of Civil Engineering,Guangzhou University,Guangzhou 510006,China;Shanghai Baichuang Engineering Group Co.,Ltd.,Shanghai 201112,China)

机构地区：[1]中铁建华南建设有限公司,广州510000 [2]广州大学土木工程学院,广州510006 [3]上海拜创建筑工程(集团)有限公司,上海201112

出　　处：《结构工程师》2023年第5期33-43,共11页Structural Engineers

基　　金：中铁建华南建设有限公司2020年科研计划项目(20-B-04);广东省科技计划项目(2020B0101130005)。

摘　　要：本文提出了一种新型钢筋模块化节点,应用于地下结构的侧墙-底板结构中,其节点钢筋采用钢筋桁架交替排列的形式。对该钢筋模块化节点进行了有限元分析,结果表明:钢筋模块化节点具有与传统钢筋混凝土节点构造一致的节点力学性能及裂缝开展规律,可满足结构受力需求;随着纵向受拉钢筋截面积的增大,节点纵筋应力减小、裂缝扩展减缓;混凝土强度增加会抑制节点裂缝的扩展,也会略减小纵筋应力。此模块化钢筋节点构造简单,模块化钢筋桁架可工厂预制、现场安装,节点整体性高,可达到快速建造的目的,具有较好的推广及应用前景。A new modular reinforcement joint is proposed for the sidewall-bottom slab structure of underground structure,and its nodal reinforcement adopts the form of alternant arrangement of steel trusses.The finite element analysis of the modular joint shows that the modular reinforcement joint has the same mechanical properties and crack development law as the traditional reinforced concrete joint,which can meet the structural stress requirements;the stress of reinforcement decreases and the crack expansion slows down with the increase of the cross-sectional area of the longitudinal tensile reinforcement.It can inhibit the crack expansion of the joint and also slightly reduce the reinforcement stress with the increase of the concrete strength.This modular reinforcement joint is simple in construction and has high integrity,and the modular reinforcement truss can be prefabricated in factory and installed on site,which can achieve the purpose of rapid construction,and has good promotion and application prospects.

关 键 词：钢筋模块化节点 有限元分析 力学性能 

分 类 号：TU375[建筑科学—结构工程]