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A platform for research: civil engineering, architecture and urbanism
Large-displacement tensile bridge support for cable-stayed bridge
The invention relates to a large-displacement tensile bridge support for a cable-stayed bridge. The large-displacement tensile type bridge support for the cable-stayed bridge comprises a top plate, a middle seat plate, a spherical crown plate and a bottom plate from top to bottom, the bottom face of the middle seat plate is a concave spherical face, the top face of the spherical crown plate is a convex spherical face, corresponding vertical through holes are formed in the center of the middle seat plate and the center of the spherical crown plate, and the upper hole diameter of the vertical through hole of the middle seat plate is larger than the lower hole diameter of the vertical through hole of the middle seat plate; an annular tensile spherical crown plate is arranged on the upper portion of the vertical through hole of the middle seat plate, a circular sinking groove is formed in the inner side of the top of the tensile spherical crown plate, the tensile shaft is inserted into the vertical through hole, and the expanded end of the top of the tensile shaft is pressed and covered in the sinking groove of the tensile spherical crown plate. The tensile function of the bridge support is achieved by adding tensile assemblies such as the drawing shaft, separation of transverse movable displacement and longitudinal movable displacement of the bridge support is achieved by arranging the limiting check block, vertical pressure can be borne, release of longitudinal large displacement can be achieved under the condition that vertical pulling resistance is borne. The transverse movement displacement is released through the shearing device under the earthquake working condition, and the large-displacement cable-stayed bridge is suitable for the large-displacement cable-stayed bridge with the tensile requirement and the high anti-seismic performance requirement.
本发明涉及一种斜拉桥用大位移量抗拉型桥梁支座，自上而下包括顶板、中座板、球冠板和底板，中座板的底面呈凹球面，球冠板的顶面呈凸球面，中座板和球冠板的中心设置有对应的竖向通孔，中座板竖向通孔的上部孔径大于下部孔径；中座板竖向通孔的上部设置有环形的抗拉球冠板，抗拉球冠板顶部内侧设置有圆形沉槽，抗拉轴插入竖向通孔，抗拉轴顶部的扩大端压覆在抗拉球冠板的沉槽中。本发明增加拉拔轴等抗拉组件来实现桥梁支座的抗拉功能，设置限位挡块实现桥梁支座横向活动位移和纵向活动位移的分离，不仅能承受竖向压力，也能在承受竖向抗拔力的情况下实现纵向大位移量的释放，地震工况下通过剪断装置释放横向活动位移，适用于有抗拉需求且抗震性能要求较高的大位移量斜拉桥。
Large-displacement tensile bridge support for cable-stayed bridge
The invention relates to a large-displacement tensile bridge support for a cable-stayed bridge. The large-displacement tensile type bridge support for the cable-stayed bridge comprises a top plate, a middle seat plate, a spherical crown plate and a bottom plate from top to bottom, the bottom face of the middle seat plate is a concave spherical face, the top face of the spherical crown plate is a convex spherical face, corresponding vertical through holes are formed in the center of the middle seat plate and the center of the spherical crown plate, and the upper hole diameter of the vertical through hole of the middle seat plate is larger than the lower hole diameter of the vertical through hole of the middle seat plate; an annular tensile spherical crown plate is arranged on the upper portion of the vertical through hole of the middle seat plate, a circular sinking groove is formed in the inner side of the top of the tensile spherical crown plate, the tensile shaft is inserted into the vertical through hole, and the expanded end of the top of the tensile shaft is pressed and covered in the sinking groove of the tensile spherical crown plate. The tensile function of the bridge support is achieved by adding tensile assemblies such as the drawing shaft, separation of transverse movable displacement and longitudinal movable displacement of the bridge support is achieved by arranging the limiting check block, vertical pressure can be borne, release of longitudinal large displacement can be achieved under the condition that vertical pulling resistance is borne. The transverse movement displacement is released through the shearing device under the earthquake working condition, and the large-displacement cable-stayed bridge is suitable for the large-displacement cable-stayed bridge with the tensile requirement and the high anti-seismic performance requirement.
本发明涉及一种斜拉桥用大位移量抗拉型桥梁支座，自上而下包括顶板、中座板、球冠板和底板，中座板的底面呈凹球面，球冠板的顶面呈凸球面，中座板和球冠板的中心设置有对应的竖向通孔，中座板竖向通孔的上部孔径大于下部孔径；中座板竖向通孔的上部设置有环形的抗拉球冠板，抗拉球冠板顶部内侧设置有圆形沉槽，抗拉轴插入竖向通孔，抗拉轴顶部的扩大端压覆在抗拉球冠板的沉槽中。本发明增加拉拔轴等抗拉组件来实现桥梁支座的抗拉功能，设置限位挡块实现桥梁支座横向活动位移和纵向活动位移的分离，不仅能承受竖向压力，也能在承受竖向抗拔力的情况下实现纵向大位移量的释放，地震工况下通过剪断装置释放横向活动位移，适用于有抗拉需求且抗震性能要求较高的大位移量斜拉桥。
Large-displacement tensile bridge support for cable-stayed bridge
斜拉桥用大位移量抗拉型桥梁支座
LI YONGQING (author) / WANG GANG (author) / FENG YUNCHENG (author) / FAN BINGBING (author) / LIU GUANHUA (author)
2021-09-17
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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