大跨度预应力混凝土框架结构张拉方案的对比分析  

Comparative Analysis of Tension Schemes for Large-span Prestressed Concrete Frame Structures

作　　者：王丹涛 王虎祥 WANG Dantao;WANG Huxiang(China Railway 1st Bureau Group Installation Engineering Co.,Ltd.,Xi'an 710054,Shaangxi,China;School of Civil Engineering and Hydraulic Engineering,Ningxia University,Yinchuan 750021,Ningxia,China)

机构地区：[1]中铁一局集团建筑安装工程有限公司,陕西西安710054 [2]宁夏大学土木与水利工程学院,宁夏银川750021

出　　处：《建筑施工》2023年第6期1078-1080,1100,共4页Building Construction

基　　金：宁夏回族自治区重点研发计划(2021BEG03022);中铁一局集团建筑安装工程有限公司产学研合作项目(ZTYJJAGS-JHHZGC-KY-01)。

摘　　要：为揭示不同施工方案在实施过程中对预应力混凝土结构内力与变形的影响规律,采用基于施工力学原理的数值模拟方法,对某预应力混凝土结构进行施工过程模拟。结果表明:采用“逆向张拉”方案施工所引起的结构内力和变形均小于“顺向张拉”方案。针对复杂工程开展基于施工力学的响应分析,有助于制定更加适用于特定工程的施工与监测方案,从而确保施工安全并提高施工效率。To reveal the influence of different construction schemes on the internal force and deformation of a prestressed concrete structure in the implementation process,the numerical simulation method based on the principle of construction mechanics is used to simulate the construction process of a prestressed concrete structure.The results show that the internal force and deformation of the structure caused by using the"reverse tension"scheme are smaller than those caused by the"forward tension"scheme.The response analysis based on construction mechanics for complex engineering is helpful to develop more suitable construction and monitoring schemes for specific projects,so as to ensure construction safety and improve construction efficiency.

关 键 词：预应力混凝土 预应力张拉 张拉顺序 施工模拟 

分 类 号：TU757[建筑科学—建筑技术科学]