- 摘 要
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（1 蘇州科技學院土木工程系 215011；2 中國建筑科學研究院結(jié)構(gòu)所 北京 100013）
【提要】 進行了8根高強混凝土梁的試驗，其中6根為輕骨料混凝土梁，2根為普通混凝土梁。通過觀察和量測，總結(jié)了高強輕骨料混凝土梁的性能，回歸出有關(guān)參數(shù)的計算式。對梁的開裂彎矩、極限彎矩、剛度、撓度、裂縫寬度等的實測值與計算值進行了對比，為《輕骨料混凝土結(jié)構(gòu)設(shè)計規(guī)程》的編制提供了參考依據(jù)。
【關(guān)鍵詞】 高強輕骨料混凝土 內(nèi)力臂系數(shù) 鋼筋拉應變不均勻系數(shù) 剛度 撓度 裂縫寬度
Experimental Reserch on High Strength Light Weight Aggregate Concrete Beams/Xu Jiaxiu1,Cai Hua1,Shao Yongjian1,Zhu Pinru1,Cheng Zhijun2,Wang Xiaof
eng2(1 Dept. of Civil Engineering,USTS,SuZhou 215011,China; 2 Institute of Structure,CABR,Beijing 100013,China)
Abstract:The experiments of eight reinforced high strength concrete beams have been carri
ed out.Six of which are made of light weight aggregate concrete(LWAC)and others
are made of normal density concrete(NDC). On the basis of observation and meansu
ring, the performance of high strength LWAC beams is concluded,and some
useful data and formula in design are given.Using different formula
, cracking moment, ultimate moment, section stiffness, deflection and width of c
rack etc. are calculated, and the results are compared with the data in experime
nts.It can be used as reference and evidence for editors of the Design Code of
High Strength and Light Weight Aggregate Concrete Struture.
Keywords:high strength；light weight aggregate concrete；coefficient；internal force couple arm；cracks;stiffness;deflection
