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趙凱選¹，李慧²

（1.河南水建集團(tuán)有限公司，河南 鄭州450000；

2. 鄭州工商學(xué)院，河南 鄭州 450000）

摘 要：為評估高層建筑施工中剪力墻結(jié)構(gòu)連梁節(jié)點(diǎn)的受力性能，提出了一種基于有限元數(shù)值模擬的方法。試驗結(jié)果表明，該方法能有效模擬連梁節(jié)點(diǎn)的實(shí)際受力狀態(tài)，試件的承載能力與軸壓比和暗支撐配筋率正相關(guān)，且隨梁端位移增加，承載力退化系數(shù)先升后降，在配筋率為1%~2%時，試件穩(wěn)定性表現(xiàn)優(yōu)異，具備良好的變形能力和延性。

關(guān)鍵詞：高層建筑施工；剪力墻結(jié)構(gòu)；連梁節(jié)點(diǎn)；受力數(shù)值模擬；暗支撐配筋率；退化系數(shù)

中圖分類號：TU323        

文獻(xiàn)標(biāo)志碼：A       

文章編號：1005-8249（2024）02-0111-06

DOI：10.19860/j.cnki.issn1005-8249.2024.02.021

 

ZHAO kaixuan ¹, LI Hui²

( 1.Henan Water Construction Group Co.,Ltd., Zhengzhou 450000,China,

2.Zhengzhou Technology and Business University,Zhengzhou 450000, China)

Abstract: To evaluate the stress performance of shear wall structure connecting beam nodes in high-rise building construction, this study proposes a numerical simulation based method. This method connects the shear wall panel to the edge components through fishtail welding technology, sets stiffeners at the center as the origin, and uses double-sided corner welding to fix them. Select a specific connecting beam as the specimen, and use quasi-static loading technology according to JGJ/T101-2015 standard. Firstly, apply a vertical load of 300 kN, and then apply a horizontal load. Monitor the displacement and stress changes of the rod after being subjected to force using a dial gauge and strain gauge. The experimental results show that this method can effectively simulate the actual stress state of the connecting beam node. The bearing capacity of the specimen is positively correlated with the axial compression ratio and the reinforcement ratio of the hidden support. As the displacement of the beam  end increases, the degradation coefficient of the bearing capacity first increases and then decreases. When the reinforcement ratio is 1%-2%, the stability of the specimen is excellent, with good deformation ability and ductility.

Keywords: construction of high-rise buildings; shear wall structure; beam joint; numerical simulation of force; reinforcement ratio of dark support; degradation coefficient 

作者簡介：趙凱選（1982-），男，本科，高級工程師，主要研究方向：工程現(xiàn)場施工管理，土木水利類技術(shù)創(chuàng)新研究等。

通信作者：李慧（1982-），女，碩士，副教授，主要研究方向：混凝土結(jié)構(gòu)、新型建筑材料、交通工程方面的研究等。

收稿日期：2023-10-14