装配式边坡支护结构节点力学特性的试验分析  

Experimental analysis on mechanical properties of joints of fabricated slope support structure

作　　者：房营光[1,2] 王新康 谷任国 FANG Yingguang;WANG Xinkang;GU Renguo(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510000,China;State Key Laboratory of Subtropical Building Science,Guangzhou 510000,China)

机构地区：[1]华南理工大学土木与交通学院,广东广州510000 [2]亚热带建筑科学国家重点实验室,广东广州510000

出　　处：《应用科技》2023年第1期106-111,共6页Applied Science and Technology

基　　金：国家自然科学基金项目(51208211);华南理工大学亚热带建筑科学国家重点实验室自主研究项目(2017KB16)。

摘　　要：为解决施工过程中边坡坍塌问题,使得边坡可边开挖边支护,本文对装配式边坡支护结构节点进行分析。节点为装配式格构梁边坡支护结构的核心部位,对装配式节点部位进行优化,采用分层结构减轻施工质量,并对其进行室内模拟土质边坡和岩质边坡加载试验,试验结果满足200 kN承载力工况要求,对比试验结果与理论计算的荷载挠度关系得出:分层节点构造的抗弯刚度为整体结构的37%~45%;通过ABAQUS模拟节点断面应力分布情况得出:断面应力分布与理论应力分布比较一致,层间滑移小于0.1 mm,结构实现协调变形。本文分析结果可以为实际边坡支护工程提供应用参考。In order to solve the problem of slope collapse during construction and ensure that the slope can be excavated and supported at the same time,the nodes of the prefabricated slope support structure are analyzed in this paper.The node is the core part of the prefabricated lattice beam slope support structure.The prefabricated node part is optimized,and the layered structure is used to reduce the mass of construction.The soil slope and rock slope loading tests are simulated indoors.The test results meet the requirements of the 200 kN bearing capacity condition.By comparing the test results with the load deflection relationship calculated theoretically,it is concluded that the bending stiffness of the layered node structure is 37%~45%of the overall structure;Through ABAQUS simulation of node section stress distribution,it is concluded that the section stress distribution is relatively consistent with the theoretical stress distribution,the interlayer slip is less than 0.1 mm,and the structure achieves coordinated deformation.The analysis results of this paper can provide reference for the actual application in slope support engineering.

关 键 词：装配式 边坡支护 节点 分层结构 室内荷载试验 荷载挠度关系 数值分析 应力分布 

分 类 号：TU411[建筑科学—岩土工程]