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一、前言我省天然浮石蕴藏量极为丰富,以天然浮石做轻骨料的混凝土,具有质轻、保温及抗震性能好等优点,而且可以就地取材,节约能源。为了促进轻混凝土在工程上的推广应用并为结构设计提供依据,我所从79年开始对钢筋浮石混凝土受弯构件正截面强度进行了试验研究。本文通对三十根梁的试验,对受弯构件极限状态下的破坏特征、截面应变分布规律、混凝土的极限压应变、混凝土压区应力图形特征系数及弯压强度、极限强度等进行了研究,对我国现行《钢筋混凝土结构设计规
I. INTRODUCTION Natural pumice reserves in our province are extremely abundant. Concrete made of natural pumice stone is lightweight, has good heat preservation and seismic performance, and can be sourced locally to save energy. In order to promote the application of light concrete in engineering and provide basis for structural design, I have conducted experimental studies on the normal section strength of reinforced concrete pumice concrete flexural members since 1979. In this paper, the test of thirty beams is carried out, and the failure characteristics, the strain distribution law of the section, the ultimate compressive strain of the concrete, the characteristic coefficient of the stress profile of the compression zone, the bending strength and ultimate strength of the flexural member are studied. , For China’s current "Design Regulations for Reinforced Concrete Structures