CN-115787361-B - Steel pipe concrete sleeper type ballastless track with vibration reduction function and construction method

Abstract

The invention discloses a steel tube concrete sleeper type ballastless track with a vibration reduction function and a construction method, and belongs to the technical field of ballastless tracks. The ballastless track comprises two steel rails, a plurality of fasteners, a plurality of steel pipe concrete sleepers, a plurality of track bed boards and a plurality of steel bottom boards. A plurality of concrete filled steel tube sleepers are inserted in each track bed board at intervals in parallel. Each track bed board is inserted with a plurality of upper steel pipes and a plurality of steel springs, the plurality of upper steel pipes are arranged in two rows, each steel spring is inserted into the corresponding upper steel pipe, and the upper steel pipes and the steel springs are both arranged protruding out of the track bed board. The top surface of each steel bottom plate is fixedly provided with a plurality of lower steel pipes, the bottom ends of each upper steel pipe are slidably and coaxially inserted into the corresponding lower steel pipes, and the bottom ends of each steel spring are inserted into the corresponding lower steel pipes. The steel pipe concrete sleeper type ballastless track with the vibration reduction function can improve the geometric shape and position retaining capacity of the sleeper and can also effectively play a role in buffering and vibration reduction on the sleeper.

Inventors

• ZHU BIN
• YE SONG
• LIN CHAO
• REN XICHONG
• LIU JIE
• LIU YU
• GE CHENGBAO
• SUN LI
• LI QIHANG
• LI QIUYI
• ZHANG PENG
• ZHU JIANG
• YANG YANLI
• ZHANG ZHENG
• ZHANG SHIJIE

Assignees

• 中铁第四勘察设计院集团有限公司

Dates

Publication Date

20260505

Application Date

20221208

Claims (4)

1. 1. A construction method of a concrete filled steel tube sleeper type ballastless track with a vibration reduction function is characterized in that the construction method is based on the ballastless track, The ballastless track comprises two steel rails (1), a plurality of fasteners (2), a plurality of steel tube concrete sleepers (3), a plurality of track bed boards (4) and a plurality of steel base boards (5) which are sequentially arranged from top to bottom; The plurality of concrete filled steel tube sleepers (3) are inserted into each of the road bed boards (4) at intervals in parallel; the track bed plates (4) are sequentially arranged along the length direction of the steel rail (1), each track bed plate (4) is of a concrete casting structure, a plurality of upper steel pipes (41) and a plurality of steel springs (42) are fixedly inserted into the bottom of each track bed plate (4), the plurality of upper steel pipes (41) are arranged at intervals in two rows, each steel spring (42) is inserted into the corresponding upper steel pipe (41), and the upper steel pipe (41) and the steel spring (42) are both protruded out of the corresponding track bed plate (4); The plurality of steel bottom plates (5) are sequentially arranged along the length direction of the steel rail (1), a plurality of lower steel pipes (51) are fixedly arranged on the top surface of each steel bottom plate (5), the bottom ends of the upper steel pipes (41) are slidably and coaxially inserted into the corresponding lower steel pipes (51), the bottom ends of the steel springs (42) are inserted into the corresponding lower steel pipes (51) and are propped against the corresponding steel bottom plates (5), and connecting bolts (52) are inserted on each steel bottom plate (5) to connect a track bottom foundation; The construction method comprises the following steps: Arranging a steel pipe (31) in a mould, pouring reinforced concrete, and integrally pouring and forming the steel pipe concrete sleeper (3); Placing a plurality of steel pipe concrete sleepers (3), a plurality of upper steel pipes (41) and a plurality of steel springs (42) into a track bed slab reinforcement cage at intervals, and standing a mould around the track bed slab reinforcement cage to cast concrete into the track bed slab reinforcement cage so as to form a track bed plate (4) and curing; embedding a plurality of spiral sleeves in a track bottom foundation, wherein each spiral sleeve is matched with a corresponding connecting bolt (52); According to the setting requirement, arranging a plurality of steel bottom plates (5) and a plurality of ballast bed plates (4) on the basis of the bottom of the track in sequence, so that each upper steel pipe (41) and each steel spring (42) are inserted into the corresponding lower steel pipe (51); The corresponding spiral sleeves are connected through the connecting bolts (52), and the fasteners (2) and the steel rail (1) are sequentially and correspondingly arranged on the steel pipe concrete sleeper (3).
2. 2. The construction method of a concrete filled steel tube sleeper ballastless track with vibration reducing function according to claim 1, wherein the arranging of the steel tube (31) in the mold and the casting of the reinforced concrete, the integral casting of the concrete filled steel tube sleeper (3), comprises: Arranging steel pipes (31) and two connecting ribs (43) in a die, and pouring reinforced concrete, and integrally pouring and forming the steel pipe concrete sleeper (3), wherein each connecting rib (43) protrudes out of the bottom of the steel pipe concrete sleeper (3).
3. 3. A construction method of a concrete filled steel tube sleeper type ballastless track with a vibration reducing function according to claim 2, wherein the placing a plurality of the concrete filled steel tube sleepers (3), a plurality of the upper steel tubes (41) and a plurality of the steel springs (42) into a track bed slab reinforcement cage at intervals and erecting a mold around the track bed slab reinforcement cage to cast concrete to the track bed slab reinforcement cage to form the track bed slab (4) and curing comprises: each connecting rib (43) and the corresponding upper steel pipe (41) and steel spring (42) are respectively welded and connected; And placing a plurality of steel pipe concrete sleepers (3) into the track bed plate reinforcement cage at intervals, and standing a mould around the track bed plate reinforcement cage so as to cast concrete into the track bed plate reinforcement cage, thereby forming the track bed plate (4) and curing.
4. 4. The construction method of the concrete filled steel tube sleeper-type ballastless track with the vibration reduction function according to claim 2, wherein the connecting ribs (43) are door ribs.

Description

Steel pipe concrete sleeper type ballastless track with vibration reduction function and construction method Technical Field The invention belongs to the technical field of ballastless tracks, and particularly relates to a steel tube concrete sleeper type ballastless track with a vibration reduction function and a construction method. Background The track system is divided into a ballasted track and a ballastless track according to the form of a track bed, wherein the track bed of the ballasted track is constructed by ballasts, and the track bed of the ballastless track is constructed by a reinforced concrete structure. Compared with the ballastless track, the ballastless track has the obvious advantages of better integrity, good stability, good track set retention, less maintenance workload and the like. At present, the application of the steel pipe concrete sleeper in ballastless tracks is more and more widespread, the steel pipe concrete sleeper is formed by integrally forming steel pipe concrete and sleeper blocks, namely, the steel pipe concrete is formed by casting the sleeper blocks and simultaneously designing the steel pipe concrete to be composed of a plurality of hollow steel pipes, so that the geometric shape and position retaining capacity of the sleeper is effectively improved, the consumption of the steel pipes is reduced, the constructability is improved, the construction can be directly carried out on site, and the requirement of the sleeper on bending and twisting resistance is met. However, although the geometric shape and position retaining capability of the sleeper is improved, the vibration reduction function of the sleeper is often difficult to realize, so that the ballastless track is polluted by noise, and the longitudinal and transverse limiting capability of the sleeper is weaker in the vibration reduction process, so that the safety of the ballastless track cannot be ensured. Disclosure of Invention Aiming at the defects or improvement demands of the prior art, the invention provides the steel tube concrete sleeper type ballastless track with the vibration reduction function and the construction method, and the steel tube concrete sleeper type ballastless track with the vibration reduction function aims to improve the geometric shape and position maintaining capability of the sleeper, also can effectively play a role in buffering and reducing vibration of the sleeper, avoid noise pollution, and can effectively perform longitudinal and transverse limiting in the vibration reduction process so as to ensure the safety of the ballastless track. The invention provides a steel pipe concrete sleeper type ballastless track with a vibration reduction function, which comprises two steel rails, a plurality of fasteners, a plurality of steel pipe concrete sleepers, a plurality of track slabs and a plurality of steel bottom plates which are sequentially arranged from top to bottom; the plurality of concrete filled steel tube sleepers are inserted into each road bed board at intervals in parallel; The plurality of track bed plates are sequentially arranged along the length direction of the steel rail, each track bed plate is of a concrete casting structure, a plurality of upper steel pipes and a plurality of steel springs are fixedly inserted into the bottom of each track bed plate, the plurality of upper steel pipes are arranged at intervals in two rows, each steel spring is inserted into the corresponding upper steel pipe, and the upper steel pipes and the steel springs are arranged in a way of protruding the corresponding track bed plate; The plurality of steel bottom plates are sequentially arranged along the length direction of the steel rail, a plurality of lower steel pipes are fixedly arranged on the top surface of each steel bottom plate, the bottom ends of the upper steel pipes are slidably and coaxially inserted into the corresponding lower steel pipes, the bottom ends of the steel springs are inserted into the corresponding lower steel pipes and are propped against the corresponding steel bottom plates, and connecting bolts are inserted into the steel bottom plates to connect a track bottom foundation. Optionally, the ballastless track further comprises a plurality of steel backing plates, the plurality of steel backing plates are stacked in parallel, and each connecting bolt penetrates through the plurality of steel backing plates. Optionally, the number of the steel backing plates is 2-5. Optionally, the steel bottom plate has a thickness of 20-50mm. Optionally, the steel bottom plate is welded with a plurality of the lower steel pipes. Optionally, the outer diameter of each upper steel pipe is 150mm, and the inner diameter of each lower steel pipe is 150.5mm. In a second aspect, the invention provides a construction method of a concrete filled steel tube sleeper type ballastless track with a vibration reduction function, the construction method is based on the ballastless track