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(合肥工業(yè)大學汽車與交通工程學院， 合肥 230009)
摘要: 為滿足橋梁和建筑建設(shè)需要，研究大尺寸波形鋼腹板 H 型鋼梁在局部壓力作用下的承載力，共設(shè)計了 5個試件進行靜力加載試驗。 試驗表明，2000 型和 2400 型大尺寸波形鋼腹板與 1600 型波形鋼腹板局部受壓承載力相差不大，試件的破壞現(xiàn)象均為鋼腹板的屈服破壞以及翼緣板和加勁肋的彎曲。 試驗過程中試件的彈塑性階段較為顯著，達到極限荷載后腹板中上部進入塑性階段，位移值不斷增大，而卸載后底板位移回落。 跨中加勁肋能夠提高試件的極限承載力，腹板高度對試件的極限承載力影響不大。 同時，采用有限元仿真能夠較好地模擬試件的受力過程和破壞現(xiàn)象。 腹板厚度、翼緣厚度、加勁肋厚度對承載力有直接影響。 最后提出了大尺寸波形鋼腹板 H 型鋼梁的局部受壓承載力計算公式，并將公式計算結(jié)果與試驗及有限元結(jié)果進行對比，結(jié)果表明公式具有良好的精度。
關(guān)鍵詞: 大尺寸波形鋼腹板； 局部壓力； 靜力加載試驗； 局部受壓承載力
中圖分類號:TU357 文獻標志碼:A 文章編號:1002￣848X(2022)04￣0093￣07
DOI:10. 19701 / j.jzjg.20200430
Analysis on bearing capacity of H￣shaped steel beam with large￣sized corrugated steel websunder local compressive loading
LI Shuqin， LI Yuelu， YANG Zhengyu
(School of Automotive and Traffic Engineering， Hefei University of Technology， Hefei 230009， China)
Abstract: In order to meet the needs of bridge and building construction， the bearing capacity of H￣shaped steel beam withlarge￣sized corrugated steel webs under local pressure was studied. Five specimens were designed for static loading test.Tests have shown that the type 2000 and type 2400 large￣sized corrugated steel webs have little difference from type 1600orrugated steel webs between local compression bearing capacity. The failure phenomena of specimens is the yield failure ofthe steel web and the bending of the flange plate and the stiffener. The elastic￣plastic stage of specimens is more significantduring the test. After the ultimate load， the upper middle part of the web enters the plastic stage， the displacement valueincreases continuously， and the displacement of the bottom plate falls after unloading. The spanning stiffener can increasethe ultimate bearing capacity of specimens， and the web height has little effect on the ultimate bearing capacity ofspecimens. At the same time， the finite element method can better simulate the stress process and failure phenomenon ofspecimens. The thickness of the web， the thickness of the flange， and the thickness of the stiffener have a direct effect onthe bearing capacity. Finally， the calulation formula of the local compressive bearing capacity of H￣shaped steel beam withlarge￣sized corrugated steel webs was proposed， and the formula calulation results were compared with the experimental andfinite element results， and the results show that the formula has good accuracy.
Keywords:large￣sized corrugated steel web； local pressure； static loading test； local compressive bearing capacity
∗安徽省自然科學基金-青年基金項目(1608085QE103)。
第一作者:李淑琴，博士，主要從事鋼￣混凝土組合橋梁方向研究，Email:709049611@ qq.com。
[引用本文] 李淑琴，李月路，楊震宇. 大尺寸波形鋼腹板 H 型鋼梁局部受壓承載力分析 [ J].建筑結(jié)構(gòu)，2022，52(4):93￣99. LI Shuqin， LI Yuelu， YANG Zhengyu. Analysis on bearing capacity of H￣shaped steel beam with large￣sizedcorrugated steel webs under local compressive loading[J]. Building Structure，2022，52(4):93￣99.
