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A platform for research: civil engineering, architecture and urbanism
Self-adaptive height-adjusting supporting method and device for large-span canyon bridge
The invention discloses a self-adaptive height-adjusting supporting method and device for a large-span canyon bridge, and the method comprises the steps: respectively obtaining the height of two adjacent bridge piers in the longitudinal bridge direction, calculating the height difference delta h between the two bridge piers, and obtaining the length L of a beam body; calculating the relative change value delta t of the elevation of the abutment by calculating the height difference delta h of the adjacent piers, and calculating the expansion amount delta Lt of the beam body; calculating the expansion amount change gradient i between the vertical direction and the longitudinal bridge direction according to the obtained relative change value delta t of the pier elevation and the expansion amount delta Lt of the beam body; a longitudinal movable support and a multidirectional movable support are mounted on the high bridge pier, and a fixed support and a transverse movable support are mounted on the low bridge pier; the beam body obliquely moves by taking the expansion and contraction amount change gradient i as an inclination degree, and generated relative displacement is coupled with the absolute expansion and contraction amount of the pier and the expansion and contraction amount of the beam body; the beam body only generates expansion and contraction amount in the horizontal direction, and all the beam bodies are kept in the original stable state. And the good smoothness of the bridge is always kept when the bridge expands with heat and contracts with cold.
本发明公开了一种用于大跨度峡谷桥梁的自适应调高支承方法及装置，方法包括：分别获取纵桥向相邻两个桥墩的高度，算出二者的高度差Δh，获取梁体的长度L；以算出相邻桥墩的高度差Δh计算墩台标高相对变化值δt，计算梁体的伸缩量ΔLt；以所得墩台标高相对变化值δt与梁体的伸缩量ΔLt计算竖直方向与纵桥向之间的伸缩量变化坡度i；在所述高桥墩上安装纵向活动支座和多向活动支座，在所述低桥墩上安装固定支座和横向活动支座；梁体以所述伸缩量变化坡度i为倾斜度倾斜移动，产生的相对位移与桥墩的绝对伸缩量以及梁体的伸缩量形成耦合；梁体仅在水平方向产生伸缩量，所有梁体均保持原有平稳状态。保证桥梁在面对热胀冷缩时始终保持良好的平整性。
Self-adaptive height-adjusting supporting method and device for large-span canyon bridge
The invention discloses a self-adaptive height-adjusting supporting method and device for a large-span canyon bridge, and the method comprises the steps: respectively obtaining the height of two adjacent bridge piers in the longitudinal bridge direction, calculating the height difference delta h between the two bridge piers, and obtaining the length L of a beam body; calculating the relative change value delta t of the elevation of the abutment by calculating the height difference delta h of the adjacent piers, and calculating the expansion amount delta Lt of the beam body; calculating the expansion amount change gradient i between the vertical direction and the longitudinal bridge direction according to the obtained relative change value delta t of the pier elevation and the expansion amount delta Lt of the beam body; a longitudinal movable support and a multidirectional movable support are mounted on the high bridge pier, and a fixed support and a transverse movable support are mounted on the low bridge pier; the beam body obliquely moves by taking the expansion and contraction amount change gradient i as an inclination degree, and generated relative displacement is coupled with the absolute expansion and contraction amount of the pier and the expansion and contraction amount of the beam body; the beam body only generates expansion and contraction amount in the horizontal direction, and all the beam bodies are kept in the original stable state. And the good smoothness of the bridge is always kept when the bridge expands with heat and contracts with cold.
本发明公开了一种用于大跨度峡谷桥梁的自适应调高支承方法及装置，方法包括：分别获取纵桥向相邻两个桥墩的高度，算出二者的高度差Δh，获取梁体的长度L；以算出相邻桥墩的高度差Δh计算墩台标高相对变化值δt，计算梁体的伸缩量ΔLt；以所得墩台标高相对变化值δt与梁体的伸缩量ΔLt计算竖直方向与纵桥向之间的伸缩量变化坡度i；在所述高桥墩上安装纵向活动支座和多向活动支座，在所述低桥墩上安装固定支座和横向活动支座；梁体以所述伸缩量变化坡度i为倾斜度倾斜移动，产生的相对位移与桥墩的绝对伸缩量以及梁体的伸缩量形成耦合；梁体仅在水平方向产生伸缩量，所有梁体均保持原有平稳状态。保证桥梁在面对热胀冷缩时始终保持良好的平整性。
Self-adaptive height-adjusting supporting method and device for large-span canyon bridge
一种用于大跨度峡谷桥梁的自适应调高支承方法及装置
LIU SHENG (author) / LIANG XU (author) / HE WEI (author) / WANG LIANG (author) / XIAO CHENG (author) / FU GUOZI (author) / ZHU DEZHEN (author) / WANG FUHUA (author)
2024-09-03
Patent
Electronic Resource
Chinese
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