【摘要】 公路桥沥青混凝土伸缩缝是目前在我国发展起来的一种新型伸缩缝。本文采用粘弹性理论推导其温度应力计算公式,实测沥青混凝土的松弛模量。根据工程实践验证结果,认为采用计算的温度应力来判断变形缝的开裂温度是可行的。更多还原

【Abstract】 Asphalt concrete expansion joint in highway bridge is a new kind of expan-sion joints in China. Formula for computing the thermal stress in the jointwas deduced based on the visco-elastic theory, and the related computing pro-gram was also compiled. The relaxation modulus of asphalt concrete was meas-ured. It is proved in the practice that it is feasible to determine the crackingtemperature of the asphalt concrete expansion Joint according to the computedthermal stress.更多还原