整体装配式预应力板柱节点摩擦性能的试验研究

发布时间：2018-01-06 07:24

本文关键词：整体装配式预应力板柱节点摩擦性能的试验研究　出处：《湖南大学学报(自然科学版)》2017年11期 　论文类型：期刊论文

【摘要】：通过对6个整体装配式预应力板柱结构节点试件的试验研究,分析了板柱节点灌缝的胶结材料(如细石混凝土)强度、预应力大小、外加剂等因素对板柱节点界面摩擦性能的影响,并对比了板柱节点处存在细石混凝土胶结材料与否时的差异.试验结果表明:板柱节点处灌缝细石混凝土会显著提高节点摩擦性能,与不灌缝的节点试件相比,摩擦性能提高幅度在35%以上.细石混凝土的强度、施加预应力大小、外加剂种类也会不同程度影响节点的摩擦性能.当细石混凝土立方体抗压强度由30 MPa增加到40 MPa时,界面摩擦性能提高约9.8%.预应力从300kN增大到450kN时,节点界面摩擦性能提高约55.1%,膨胀剂添加后对节点界面摩擦性能也有提高作用,但是幅度很小.
[Abstract]:Through the experimental study on 6 nodes of the integral assembled prestressed slab column structure specimen, analysis of slab column connections with cementing material joints (such as fine stone concrete strength), prestressed size, effects of additives and other factors on the friction performance of slab column connection interface, and compares the differences between plate column joints of cement fine stone concrete or not. The results showed that the fracture of fine stone concrete can significantly improve the friction performance of the node was plate column joints, with no seam filling joints than friction performance is improved by more than 35%. Fine stone concrete strength, prestressed size, types of additives will influence the friction performance node. When the fine stone concrete cube compressive strength increased from 30 MPa to 40 MPa, the interface friction performance is improved by about 9.8%. prestress increases from 300kN to 450kN, the friction performance of the node interface is increased by about 55.1%, expansion After adding the agent, the friction properties of the interface are also improved, but the amplitude is very small.

【作者单位】：煤炭资源与安全开采国家重点实验室(中国矿业大学);中国矿业大学(北京)力学与建筑工程学院;
【基金】：国家自然科学基金资助项目(51278488) 煤炭资源与安全开采国家重点实验室开放课题项目(SKLCRSM14KFB05) 北京高等学校青年英才计划项目(YETP0942)~~
【分类号】：TU378
【正文快照】： 整体预应力装配式板柱结构起源于前南斯拉夫,简称IMS体系,它无梁无柱帽,以预制的板和柱作为基本构件,在层间施加双向预应力,使板和柱紧密贴合在一起,通过板柱界面间的摩擦力来提供竖向支撑力[1].唐山地震以后,该结构体系开始传入中国.在中国陆续开展了一些研究工作,以北京中国

【相似文献】