摘要
根据水泥混凝土路面板下脱空形态试验获得的脱空区形态特征,对超载及重载车辆作用下脱空水泥混凝土路面板内最大弯拉应力进行解析求解和使用寿命计算,并与均匀支撑条件下《规范》计算数值结果进行了对比,结果表明,超载及重载车辆的作用是造成脱空水泥混凝土路面板产生早期断裂的主要原因。
According to the form characteristics of cavity section obtained by the trial on cavity form beneath cement concrete pavement slabs, the maximum bending tensile stress in the cavity cement concrete pavement slabs under the function of overloading vehicles was analyzed and the service life was calculated. Compared with the calculation results under the condition of sharing-support in term of regulations, the results showed that the function of overloading and heavy vehicle was the main factor of incipient fracture of cavity cement concrete pavement slabs.
出处
《森林工程》
2005年第4期21-23,共3页
Forest Engineering
基金
国家自然科学基金资助。
关键词
超载
重载
脱空水泥混凝土路面
使用寿命
早期断裂
overload
heavy load
cavity cement concrete pavement slabs
service life
incipient fracture
