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高強(qiáng)外包鋼高強(qiáng)混凝土簡(jiǎn)支組合梁受彎性能試驗(yàn)研究
任冠宇,石啟印
摘 要

(江蘇大學(xué)土木工程與力學(xué)學(xué)院, 鎮(zhèn)江 212013

 

[摘要]為研究靜載作用下高強(qiáng)外包鋼高強(qiáng)混凝土簡(jiǎn)支組合梁的受彎性能,對(duì)5根簡(jiǎn)支梁進(jìn)行跨中兩點(diǎn)對(duì)稱荷載作用下的試驗(yàn),加載方式為單調(diào)靜力加載。試件主要變化參數(shù)為混凝土強(qiáng)度、鋼板強(qiáng)度以及組合梁截面尺寸。試驗(yàn)測(cè)量?jī)?nèi)容主要為豎向加載荷載、撓度、截面應(yīng)變等,研究了組合梁的破壞形態(tài)、荷載撓度曲線、荷載應(yīng)變曲線以及應(yīng)變沿截面高度的分布。試驗(yàn)結(jié)果表明,試件均發(fā)生典型的彎曲破壞,高強(qiáng)鋼與高強(qiáng)混凝土通過(guò)栓釘連接可以表現(xiàn)出良好的整體工作性能??蔀楦邚?qiáng)外包鋼高強(qiáng)混凝土組合梁在實(shí)際工程中的應(yīng)用提供試驗(yàn)依據(jù)。

[關(guān)鍵詞]高強(qiáng)外包鋼高強(qiáng)混凝土組合梁; 受彎性能; 靜載試驗(yàn)

中圖分類號(hào):TU398, TU317.1    文獻(xiàn)標(biāo)識(shí)碼:A    文章編號(hào):1002-848X(2015)03-0039-05

 

Experimental study on flexural performance of highstrength steelencased and

highstrength concrete simplysupported composite beams

Ren Guanyu, Shi Qiyin

 (Faculty of Engineering and Mechanics, Jiangsu University, Zhenjiang 212013, China)

 

Abstract:In order to study the flexural performance of highstrength steelencased and highstrength concrete simplysupported composite beam under static load, five simplysupported beams were tested. The five beams were all fullshearconnected, and sustained two symmetrical monotonic static loads in the middle span. The main changed parameters included the steel and concrete strength and the crosssection size of steel beam. The main test measurements included vertical load, deflection and crosssection strain. The failure mode, loaddeflection curve, loadstrain curve and strain distribution along the height of the crosssection were studied. The test results show that the specimens all suffer typical flexural failure. The highstrength steel and highstrength concrete exhibit well integrated working performance with the bolt connection. It provided the experimental basis for the application of highstrength steelencased and highstrength concrete composite beams in practical engineering.

Keywords:highstrength steelencased and highstrength concrete composite beam; flexural performance; static load test

 

作者簡(jiǎn)介:任冠宇,碩士研究生,Email1014265866@qq.com。

 

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