A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Arrangement scheme and design method of railway continuous steel-concrete composite beam bridge plate connecting piece
The invention provides an arrangement scheme and a design method of a railway continuous steel-concrete composite beam bridge plate connecting piece, and the arrangement scheme comprises the following steps: arranging a first stud in a beam end area, arranging a second stud in a midspan area, arranging an anti-pulling non-shearing connecting piece in a hogging moment area, and arranging a flexible nail in a transition area between the midspan area and the hogging moment area, the flexible nail comprises a third stud and a flexible sleeve arranged on the outer side of the lower portion of the third stud in a sleeving mode, the shear stiffness of the first studs is the same as that of the second studs, the longitudinal distance l1 between every two adjacent rows of first studs is smaller than the longitudinal distance l2 between every two adjacent rows of second studs, and the shear stiffness of the flexible nail is smaller than that of the second studs. The shear stiffness of the flexible nail is adjusted by adjusting the height and/or thickness of the flexible sleeve. Shearing force borne by the studs in unit area is effectively reduced, the possibility of fatigue damage and even shearing of connecting pieces is reduced, the number of the studs in unit area is greatly reduced, economical efficiency is improved, and meanwhile arrangement is more convenient.
本发明提供的一种铁路连续钢混组合梁桥梁板连接件的布置方案及设计方法，布置方案包含：在梁端区布置第一栓钉，在跨中区布置第二栓钉，在负弯矩区布置抗拔不抗剪连接件，在跨中区和负弯矩区之间的过渡区布置柔性钉，柔性钉包含第三栓钉及其下部外侧套设的柔性套，第一栓钉与第二栓钉的抗剪刚度相同，相邻两排第一栓钉的纵向间距l1小于相邻两排第二栓钉的纵向间距l2，柔性钉的抗剪刚度小于第二栓钉的抗剪刚度，柔性钉的抗剪刚度通过调节柔性套的高度和/或厚度来调节。有效减小单位面积栓钉所受的剪力，降低连接件疲劳破坏甚至剪断的可能性，大大减少单位面积上栓钉的数量，提高经济性同时布置更加便捷。
Arrangement scheme and design method of railway continuous steel-concrete composite beam bridge plate connecting piece
The invention provides an arrangement scheme and a design method of a railway continuous steel-concrete composite beam bridge plate connecting piece, and the arrangement scheme comprises the following steps: arranging a first stud in a beam end area, arranging a second stud in a midspan area, arranging an anti-pulling non-shearing connecting piece in a hogging moment area, and arranging a flexible nail in a transition area between the midspan area and the hogging moment area, the flexible nail comprises a third stud and a flexible sleeve arranged on the outer side of the lower portion of the third stud in a sleeving mode, the shear stiffness of the first studs is the same as that of the second studs, the longitudinal distance l1 between every two adjacent rows of first studs is smaller than the longitudinal distance l2 between every two adjacent rows of second studs, and the shear stiffness of the flexible nail is smaller than that of the second studs. The shear stiffness of the flexible nail is adjusted by adjusting the height and/or thickness of the flexible sleeve. Shearing force borne by the studs in unit area is effectively reduced, the possibility of fatigue damage and even shearing of connecting pieces is reduced, the number of the studs in unit area is greatly reduced, economical efficiency is improved, and meanwhile arrangement is more convenient.
本发明提供的一种铁路连续钢混组合梁桥梁板连接件的布置方案及设计方法，布置方案包含：在梁端区布置第一栓钉，在跨中区布置第二栓钉，在负弯矩区布置抗拔不抗剪连接件，在跨中区和负弯矩区之间的过渡区布置柔性钉，柔性钉包含第三栓钉及其下部外侧套设的柔性套，第一栓钉与第二栓钉的抗剪刚度相同，相邻两排第一栓钉的纵向间距l1小于相邻两排第二栓钉的纵向间距l2，柔性钉的抗剪刚度小于第二栓钉的抗剪刚度，柔性钉的抗剪刚度通过调节柔性套的高度和/或厚度来调节。有效减小单位面积栓钉所受的剪力，降低连接件疲劳破坏甚至剪断的可能性，大大减少单位面积上栓钉的数量，提高经济性同时布置更加便捷。
Arrangement scheme and design method of railway continuous steel-concrete composite beam bridge plate connecting piece
一种铁路连续钢混组合梁桥梁板连接件的布置方案及设计方法
AI ZONGLIANG (author) / WEI CHENGFENG (author) / CHEN KEJIAN (author) / ZHANG YUHAN (author) / DAI SHENGYONG (author) / CAI CHAO (author) / CHEN JIANFENG (author) / ZHONG YAWEI (author) / XU SHUO (author) / GUO ZHANYUAN (author)
2023-01-31
Patent
Electronic Resource
Chinese
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