（1 苏州科技学院土木工程系  215011；2 中国建筑科学研究院结构所  北京 100013）
【提要】  进行了8根高强混凝土梁的试验，其中6根为轻骨料混凝土梁，2根为普通混凝土梁。通过观察和量测，总结了高强轻骨料混凝土梁的性能，回归出有关参数的计算式。对梁的开裂弯矩、极限弯矩、刚度、挠度、裂缝宽度等的实测值与计算值进行了对比，为《轻骨料混凝土结构设计规程》的编制提供了参考依据。
【关键词】  高强轻骨料混凝土  内力臂系数  钢筋拉应变不均匀系数  刚度  挠度  裂缝宽度
Experimental Reserch on High Strength Light Weight Aggregate Concrete Beams/Xu Jiaxiu1,Cai Hua1,Shao Yongjian1,Zhu Pinru1,Cheng Zhijun2,Wang Xiaof
eng2(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