钢纤维增强混凝土桥面铺装层的破坏分析  

Failure analysis of steel fiber-reinforced concrete bridge deck pavement in Highway Bridges

作　　者：谭茶生[1] 刘永光[2] 曾庆敦[2] 

机构地区：[1]华南理工大学建筑学院,广州510640 [2]华南理工大学交通学院,广州510640

出　　处：《广西大学学报（自然科学版）》2006年第1期75-81,共7页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金(10372032);广东省自然科学基金资助项目(031394)

摘　　要：借鉴复合材料力学的分析方法,对桥面板和桥面铺装层组合体系建立一种分层剪滞模型,并结合线弹性断裂力学,研究了混凝土公路桥中钢纤维混凝土桥面铺装层的破坏机理,同时考虑了温度改变对铺装层破坏应力或破坏弯矩的影响.通过分析和比较,证实了本文模型和方法的正确性和可行性.本文为混凝土公路桥中桥面铺装层的破坏分析提供了一种新的研究途径和方法.Using the analytical methods of composite mechanics for reference, a layering shear-lag model was established for the system composed of bridge deck and bridge pavement. The failure mechanism of steel fiber-reinforced concrete bridge pavement in concrete highway bridges was studied by utilizing the model in conjunction with the linear elastic fracture mechanics,and the influence of temperature variation on the failure stress of pavement layer or failure moment was considered. Through analysis and comparison, the correctness and feasibility of the present model and method were validated. The present methods can supply the failure analysis of bridge deck pavement layer in concrete highway bridges with a new way of study.

关 键 词：钢纤维混凝土 桥面铺装 破坏应力 剪滞分析 能量法 破坏弯矩 

分 类 号：U414.1[交通运输工程—道路与铁道工程] O346.1[理学—固体力学]