华东交通大学学报2017，Vol.34Issue(5)：1-6,6.
立转式开启桥桥面铺装力学性能研究
Study on Mechanical Properties of Bascule Bridge Deck Pavement
孟令国 1于昌权 2尹龙 3祝争艳1
作者信息
- 1. 江苏现代路桥有限责任公司,江苏 南京 210049
- 2. 江苏省海安县交通运输局,江苏 海安226600
- 3. 河海大学道路与铁道工程研究所,江苏 南京 210098
- 折叠
摘要
Abstract
The direct shear test apparatus with environmental cabinet was adopted to analyze the shear properties of specimen interlayer under different temperatures. In the process of test, the shear stress and displacement curve of specimen was drawn. Interlayer shear strength and the interlayer shear modulus were calculated by the curve. The mechanical performance of specimens under different temperatures was evaluated through the shear-ing strength between layers and interlayer shear modulus. The bascule bridge numerical analysis model was es-tablished by finite element method and the pavement interlayer shear stress under different modulus was calcu-lated by the numerical analysis model. Danger coefficient was defined to analyze the mechanical properties be-tween the layers. Researches show that when the temperature is higher, the pavement interlayer shear modulus would be lower; the interlayer shear strength would be smaller; the danger coefficient between the layers may be higher. In the case of high temperature, the opening speed should be reduced. The maximum shear stress be-tween the layers under variable speed is larger than that at uniform speed. It is suggested that the bascule bridge deck pavement mechanics performance be studied through the method of variable opening during the design phase.关键词
立转式开启桥/桥面铺装/剪切强度/剪切模量/变速开启Key words
bascule bridge/bridge deck pavement/shear strength/shear modulus/variable speed分类
交通工程引用本文复制引用
孟令国,于昌权,尹龙,祝争艳..立转式开启桥桥面铺装力学性能研究[J].华东交通大学学报,2017,34(5):1-6,6.
