H型钢接头预制钢筋混凝土梁力学性能试验研究

胡大柱; 杨振桥; 朱其昌; 吴志平; 赵娟

doi:10.13204/j.gyjzG20042108

H型钢接头预制钢筋混凝土梁力学性能试验研究

doi: 10.13204/j.gyjzG20042108

1. 上海应用技术大学城市建设与安全工程学院, 上海 201418;
2. 上海市浦东新区建设(集团)有限公司, 上海 200125

基金项目:

国家自然科学基金青年基金项目（51408361）；上海应用技术大学中青年教师科技人才发展基金项目（ZQ2018-29）。

详细信息

作者简介:
胡大柱,男,1980年出生,副教授,硕士生导师。电子信箱:dazhuhu@163.com

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出版历程
- 收稿日期: 2020-04-21
- 网络出版日期: 2021-10-27

EXPERIMENTAL RESEARCH ON MECHANIC PROPERTIES OF PREFABRICATED REINFORCED CONCRETE BEAMS WITH H-SHAPED STEEL JOINTS

1. College of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2. Shanghai Pudong New Area Construction (Group) Co., Ltd., Shanghai 200125, China

摘要

摘要: 为了简化预制混凝土构件连接复杂性以及降低施工难度，结合钢结构连接的特点，提出了一种两端带H型钢接头的预制混凝土梁，H型钢端部连接有端板，端板通过锚件与混凝土梁端连接，混凝土梁段内纵筋与端板采用穿孔塞焊连接。设计了4个试件，研究在集中荷载作用下构件的承载力、变形形式及破坏模式，提出了挠度计算方法。对两种不同锚件形式的端板与混凝土交界面处的滑移特征进行了测试。试验结果表明：截面相同的条件下，仅腹板连接的构件变形大于翼缘与腹板均连接的构件。在满足混凝土构件抗剪承载力的条件下，H型钢接头预制钢筋混凝土梁跨中变形达到跨度的1/50时，其承载力未见下降，端板与混凝土交界面处未发生明显滑移，两端带H型钢接头的预制混凝土梁力学性能及变形能力满足GB 50010—2010《混凝土结构设计规范》要求。
- 预制混凝土梁 /
- 装配式 /
- 型钢接头 /
- 抗弯性能 /
- 滑移
Abstract: In order to simplify the connection complexity of precast concrete members and reduce the construction difficulty, a precast concrete beam with H-shaped steel joints on both ends was proposed. The ends of the H-shaped steel of the prefabricated concrete beam was conneted with an end plate, which was connected with the beam ends by anchors, and the longitudinal reinforcement in the concrete beam section was connected with the end plate by perforated plug welding. Four test specimens were designed. The bearing capacity, deformation form and failure mode under concentrated load were experimentally studied, the method for calculating the deflection was proposed. The mechanical properties at the interface between the profile steel with different anchor types and the concrete were studied. The test results showed that when the section was the same, the deformation of the member connected only with webs was greater than that of the member connected with flanges and webs. When the mid-span deformation of the precast reinforced concrete beam of the H-shaped steel joint reached 1/50, the bearing capacity of the precast beam did not decrease, and no significant slip occurred at the junction of the steel and concrete. The flexural performance of the members could meet the requirements of Code for Design of Concrete Structures (GB 50010-2010).
- precast concrete beam /
- prefabricated /
- steel joint /
- bending resistance /
- slip

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参考文献(19)

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