多锤头破碎机作用下旧水泥路面的力学响应  

Mechanical response of existing cement concrete pavement under the impact of multiple-head breaker

作　　者：赵全满[1] 张洪亮[1] 许晔[1] 

机构地区：[1]长安大学公路学院,陕西西安710064

出　　处：《合肥工业大学学报（自然科学版）》2014年第5期620-623,共4页Journal of Hefei University of Technology：Natural Science

基　　金：广东省交通运输厅资助项目(2009-02-004);陕西省交通运输厅资助项目(13-01K)

摘　　要：为了分析多锤头破碎机(MHB)作用下的旧水泥混凝土路面力学响应,文章建立了ABAQUS三维有限元模型,对不同锤击位置、不同路基模量、不同锤击能量下的路面力学响应和破坏效果进行分析。研究结果表明:锤击位置、路基模量、锤击能量共同决定MHB作用下的路面力学响应和破坏效果;MHB作用于板角时路面板最容易破碎,但破碎面积最小;路基模量越大,路面板越不容易破碎;锤击能量越大,路面所受应力越大,路面板越容易破碎。因此,建议在进行旧水泥路面碎石化时,应当根据路面的具体状况以及路基模量的大小选用不同的锤击位置和锤击能量。In order to analyze the mechanical response of existing cement concrete pavement under the impact of the multiple-head breaker（MHB）,the three-dimensional finite element model of ABAQUS is built and the mechanical response and damage effect of the pavement with different hammer positions,different subgrade modulus and different hammer energy are analyzed.The results indicate that the mechanical response and damage effect of the pavement are decided by the hammer positions,subgrade modulus and hammer energy. The pavement is most easily broken when the MHB acts on the corner,but the broken area is minimum;the pavement is more difficult to break when the subgrade modulus is bigger;the stress is larger and the pavement is easier to break when the hammer energy is bigger.Therefore,different hammer positions and hammer energy should be chosen according to the conditions of the pavement and subgrade modulus in the rubblization of the existing cement pavement.

关 键 词：道路工程 力学响应 有限元法 水泥混凝土路面 多锤头破碎机 

分 类 号：U418.8[交通运输工程—道路与铁道工程]