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A platform for research: civil engineering, architecture and urbanism
Reinforcing structure for construction of existing railway underneath pass frame bridge
The invention discloses a reinforcing structure for construction of an existing railway underneath pass frame bridge. The reinforcing structure is based on an existing railway under a 0.12% large longitudinal slope and a small-radius horizontal curve with the radius R being 300m, and comprises a plurality of frame bridges, wherien a space is reserved between every two adjacent frame bridges; the reinforcing structure also comprises longitudinal lifting beams laid at the bottom of the existing railway in the direction of the existing railway and a plurality of transverse lifting beams supported under the existing railway, wherein the transverse lifting beams are fixed between the longitudinal lifting beams and the existing railway and located between two adjacent sleepers of the existing railway at the same time, and the longitudinal depth of the transverse lifting beams is larger than that of the sleepers; and a plurality of buttress groups for supporting the longitudinal lifting beams are arranged at the bottom of the existing railway. The reinforcing structure is simple; the structural stability and stress stability of the existing railway are effectively guaranteed through the transverse lifting beams, the longitudinal lifting beams and the buttresses, and then the limitation that the speed per hour of a traditional I-shaped steel longitudinal and transverse lifting beam line reinforcing system does not exceed 25 km/h is overcome in the construction process of the underneath pass frame bridge.
本发明公开了既有铁路下穿框架桥施工的加固结构，基于12‰大纵坡，R=300m小半径平曲线下既有铁路，包括多个框架桥，相邻两个框架桥之间具有间距，还包括沿既有铁路方向且铺设在既有铁路底部的纵抬梁以及支撑在既有铁路下面的多个横抬梁，所述横抬梁固定在纵抬梁和既有铁路之间，且同时位于既有铁路的相邻两个枕木之间，横抬梁的纵向深度大于枕木的纵向深度；既有铁路底部设有多个用于支撑纵抬梁的支墩组；本发明的加固结构简单，通过设置的横抬梁、纵抬梁和支墩，有效的保证既有铁路的结构稳定和受力稳定，进而在下穿框架桥的施工过程中，克服传统工字钢纵横抬梁线路加固体系时速不得超过25km/h的局限。
Reinforcing structure for construction of existing railway underneath pass frame bridge
The invention discloses a reinforcing structure for construction of an existing railway underneath pass frame bridge. The reinforcing structure is based on an existing railway under a 0.12% large longitudinal slope and a small-radius horizontal curve with the radius R being 300m, and comprises a plurality of frame bridges, wherien a space is reserved between every two adjacent frame bridges; the reinforcing structure also comprises longitudinal lifting beams laid at the bottom of the existing railway in the direction of the existing railway and a plurality of transverse lifting beams supported under the existing railway, wherein the transverse lifting beams are fixed between the longitudinal lifting beams and the existing railway and located between two adjacent sleepers of the existing railway at the same time, and the longitudinal depth of the transverse lifting beams is larger than that of the sleepers; and a plurality of buttress groups for supporting the longitudinal lifting beams are arranged at the bottom of the existing railway. The reinforcing structure is simple; the structural stability and stress stability of the existing railway are effectively guaranteed through the transverse lifting beams, the longitudinal lifting beams and the buttresses, and then the limitation that the speed per hour of a traditional I-shaped steel longitudinal and transverse lifting beam line reinforcing system does not exceed 25 km/h is overcome in the construction process of the underneath pass frame bridge.
本发明公开了既有铁路下穿框架桥施工的加固结构，基于12‰大纵坡，R=300m小半径平曲线下既有铁路，包括多个框架桥，相邻两个框架桥之间具有间距，还包括沿既有铁路方向且铺设在既有铁路底部的纵抬梁以及支撑在既有铁路下面的多个横抬梁，所述横抬梁固定在纵抬梁和既有铁路之间，且同时位于既有铁路的相邻两个枕木之间，横抬梁的纵向深度大于枕木的纵向深度；既有铁路底部设有多个用于支撑纵抬梁的支墩组；本发明的加固结构简单，通过设置的横抬梁、纵抬梁和支墩，有效的保证既有铁路的结构稳定和受力稳定，进而在下穿框架桥的施工过程中，克服传统工字钢纵横抬梁线路加固体系时速不得超过25km/h的局限。
Reinforcing structure for construction of existing railway underneath pass frame bridge
既有铁路下穿框架桥施工的加固结构
LAI LIANGJUN (author) / TANG WENHUI (author) / XIN YUEHUI (author) / MA YUCHAO (author) / YUAN BIN (author) / GUO KUNLING (author) / LIU JIAN (author) / WANG ZHIMING (author) / GUO JUNBO (author)
2021-05-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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