钢筋桁架-自燃煤矸石混凝土组合板受弯性能研究

王庆贺; 刘雨婷; 许迪舜; 张力佳; 周长群

doi:10.13204/j.gyjzG22032906

钢筋桁架-自燃煤矸石混凝土组合板受弯性能研究

doi: 10.13204/j.gyjzG22032906

1. 沈阳建筑大学土木工程学院, 沈阳 110168;
2. 哈尔滨工业大学结构工程灾变与控制教育部重点实验室, 哈尔滨 150090;
3. 中国建筑第二工程局有限公司, 北京 110000

基金项目:

住房和城乡建设部科学技术计划项目(2019-K-054)

国家自然科学基金项目(51808351)

沈阳市中青人科技人才项目(RC200143)

辽宁省教育厅基础科研项目(lnjc202007,lnqn202024)

详细信息

作者简介:
王庆贺,男,1987年出生,工学博士,副教授。电子信箱:wangqinghe@sjzu.edu.cn

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出版历程
- 收稿日期: 2022-03-29
- 网络出版日期: 2023-02-06

Research on Flexural Properties of Reinforced Truss Spontaneous-Combustion Coal Gangue Concrete Composite Slabs

1. School of Civil Engineering, Shenyang Jianzhu University, Shenyang 110168, China;
2. Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China;
3. China Construction Second Engineering Bureau Ltd., Beijing 110000, China

摘要

摘要: 将大宗工业固废煤矸石破碎后替代混凝土中的天然骨料可实现固废资源的再利用。为研究钢筋桁架-自燃煤矸石混凝土组合板的受弯性能,采用ABAQUS软件建立钢筋桁架-自燃煤矸石混凝土组合板受弯性能有限元模型,利用8组足尺试件的荷载-挠度和荷载-刚度结果验证模型的可靠性;通过参数分析量化自燃煤矸石骨料取代率对钢筋桁架-自燃煤矸石混凝土组合板受弯性能(受弯承载力和抗弯刚度)的影响;基于参数分析结果对现有的规范设计方法的适用性进行评述。结果表明:随自燃煤矸石骨料的掺入,钢筋桁架-自燃煤矸石混凝土组合板受弯性能有所降低,取代率为100%时抗弯承载力降低0.15%~0.69%,抗弯刚度较普通混凝土组合板降低30.65%~30.99%;GB50010—2017《混凝土结构设计规范》可用于钢筋桁架-自燃煤矸石混凝土组合板抗弯刚度的预测。
- 钢筋桁架-混凝土组合板 /
- 自燃煤矸石 /
- 受弯性能 /
- 有限元分析 /
- 设计方法
Abstract: Coal gangue is a typical kind of solid waste produced during the process of coal mining, and crushing it to replace natural aggregate in concrete can realize its recycling. To study the flexural properties of reinforced truss spontaneous-combustion coal gangue aggregate concrete (RTSCGAC) composite slab, the finite element model of RTSCCGA composite slab was established by using ABAQUS software, and the reliability of the model was verified by the load-deflection and load-stiffness results from 8 groups of full-scale specimens; a parametric study was conducted and the influence of replacement ratio of spontaneous-combustion coal gangue aggregate (SCGA) on the flexural properties (flexural capacity and flexural stiffness) of RTSCGAC composite slab was quantified; based on the results of parametric analysis, the existing code design methods were reviewed. The results showed that the flexural properties of RTSCGAC composite slab decreased with the incorporation of SCGA, and the ultimate bearing capacity was slightly affected by the replacement ratio of SCGA. When the replacement ratio was 100%, the bending moment was only reduced by 0.15%~0.69%, while the flexural stiffness decreased by 30.65%~30.99%; Code for Design of Concrete Structures (GB 50010—2017) could be used for predicting the flexural stiffness of RTSCGAC composite slabs.
- reinforced truss concrete composite slab /
- spontaneous-combustion coal gangue /
- flexural properties /
- finite element analysis /
- design procedure

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