加筋水泥刨花板受弯构件的长期性能及其应用

本文介绍加筋水泥刨花板受弯构件的长期载荷试验,根据试验结果指出:加筋水泥刨花板受弯构件的变形-时间曲线与受弯木构件类似,都能依此确定长期强度极限,加筋水泥刨花板受弯构件的长期强度极限可取为0.5倍短期强度极限;加筋水泥刨花板受弯构件的长期变形超过短期变形2倍以上,因此应该按正常使用极限状态进行设计。应用加筋水泥刨花板受弯构件的试点工程证明,这种构件在设计荷载(约为破坏荷载的0.15倍)作用下,使用正常。

Long Term Performance of Flexural Member Composed of Shaving Boards with Reinforcementand Its Applications

This paper introduces the long term tests of flexural member composedof shaving boards with reinforcement. The experimental data indicate thatthe deflection-time curves of flexural member composed of shaving boardswith reinforcement are similar to the f-t curves of timber flexural member,and we can find the ultimate strength of long duration from these f-tcurves, For flexural member composed of shaving boards with reinforce-ment, the ultimate strength of long duration is equal to 0.5 times theultimate strength of short duration and the deformation of long durationis more than 2 times of the deformation of short duration so that wemust design the flexural member according to the limit of normalapplication This paper also introduces the applications of flexural member com-posed of shaving boards with reinforcement, and indicates that thesemembers and structures have good performance under designed loads.