锂渣再生混凝土框架梁柱中节点抗裂计算  

Calculation of Anti-Cracking Capacity of Recycled Concrete Mixed with Lithium Slag Beam-Column Interior-Joints

作　　者：王建虎[1] 秦拥军[1] 陈奇 卢义 孟书灵 WANG Jianhu;QIN Yongjun;CHEN Qi;LU Yi;MENG Shuling(School of Civil Engineering and Architecture,Xinjiang University,Urumqi Xinjiang 830017,China;China Construction West Construction Xinjiang Co.Ltd.,Urumqi Xinjiang 830000,China)

机构地区：[1]新疆大学建筑工程学院,新疆乌鲁木齐830017 [2]中建西部建设新疆有限公司,新疆乌鲁木齐830000

出　　处：《新疆大学学报（自然科学版）（中英文）》2023年第4期498-504,共7页Journal of Xinjiang University(Natural Science Edition in Chinese and English)

基　　金：国家自然科学基金“以锂渣为矿物掺合料再生混凝土性能及本构关系研究”(51668061).

摘　　要：为研究锂渣再生混凝土梁柱节点的抗裂性能,对6个锂渣再生混凝土中节点进行抗震性能试验,分析了梁柱截面高度比、锂渣掺量、核心区配箍率等因素对节点抗裂性能的影响.结果表明:随着截面高度比的增大,梁柱节点的开裂荷载增大,在节点核心区配置箍筋可以削弱其影响,锂渣再生混凝土梁柱节点的开裂荷载随核心区的配筋率提高呈增大趋势,掺入适量锂渣可以提高试件的开裂荷载.最后基于普通混凝土节点开裂荷载计算公式,提出了锂渣再生混凝土梁柱节点抗裂承载力计算公式,试验值与理论值吻合较好.In order to study the crack resistance of lithium slag recycled concrete beam-column joints,seismic performance tests were carried out on six lithium slag recycled concrete joints,and the effects of the section height ratio of beams and columns,the content of lithium slag and the stirrup ratio in the core area on the crack resistance of the joints were analyzed.The results show that the cracking load of the lithium slag recycled concrete beam�column joints increases with the increase of the hoop ratio in the core area.The addition of a proper amount of lithium slag can increase the cracking load of the specimen.With the increase of the section height ratio,the cracking load value increases,but the appropriate amount of stirrups in the core area can weaken its influence.Finally,based on the formula for calculating the cracking load of ordinary concrete joints and revising the relevant coefficients,a formula for calculating the cracking bearing capacity of the lithium slag recycled concrete beam�column joints is proposed.The experimental values are in good agreement with the theoretical values.

关 键 词：锂渣 再生混凝土 中节点 抗裂荷载 

分 类 号：TU528[建筑科学—建筑技术科学]