筒仓模块化穹顶式滑模刚性平台单榀足尺试验研究  

Single full-scale test on modular dome sliding mode rigid platform of silo

作　　者：孟文清[1,2] 白松 张亚鹏 崔邯龙[1,2] 倪时华 MENG Wen-qing;BAI Song;ZHANG Ya-peng;CUI Han-long;NI Shi-hua(College of Civil Engineering,Hebei University of Engineering,Handan 056038,China;Hebei Province Structural Engineering Assembly Research Center,Handan 056038,China;China Coal Construction Safely Corporation 73rd Engineering Office,Handan 056106,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038 [2]河北省结构工程装配式技术研究中心,河北邯郸056038 [3]中煤建安公司七十三工程处,河北邯郸056106

出　　处：《煤炭工程》2023年第1期41-46,共6页Coal Engineering

基　　金：国家重点研发计划(2018YFF0300201)。

摘　　要：随着筒仓直径的增大,仓顶结构的施工难度也显著提升。为检测模块化穹顶式滑模刚性平台在大直径筒仓仓顶混凝土结构施工时的承载能力,对36m跨度模块化穹顶式滑模刚性平台取出一榀空间管桁架进行静力试验及理论分析。根据实际试验对象的约束条件,建立有效的有限元计算模型,并对单榀空间管桁架有限元计算结果与试验结果进行对比分析。结果表明:单榀空间管桁架具有良好的承载能力,结构变形及各杆件内力呈线性增长,锥壳工况设计荷载下,结构最大位移值为59.4mm,最大压应力为-133.1MPa,最大拉应力为261.7MPa,均满足规范要求,试验值与有限元值相吻合,验证了有限元计算模型的正确性。With the increase of silo diameter, the construction of silo top structure is getting more more difficult.In order to detect the bearing capacity of modular dome sliding mode rigid platform in the construction of large diameter silo roof concrete structure, a space pipe truss of 36m span modular dome sliding mode rigid platform was taken out for static test and theoretical analysis.According to the constraint conditions of the actual test object, an effective finite element calculation model was established, and the finite element calculation results of a single spatial tube truss were compared with the test results.The results show that the single space tube truss has good bearing capacity, and the structural deformation and the internal force of each member increase linearly.Under the design load of conical shell, the maximum displacement of the structure is 59.4mm, the maximum compressive stress is-133.1MPa, and the maximum tensile stress is 261.7MPa, which all meet the requirements of the specification.The experimental value is consistent with the finite element value, which verifies the correctness of the finite element calculation model.

关 键 词：穹顶式 滑模刚性平台 空间管桁架 单榀足尺试验 

分 类 号：TU391[建筑科学—结构工程]