WO2024041054A1 - Prefabricated track structure for built-in pump house section in rail transportation and construction method - Google Patents
Prefabricated track structure for built-in pump house section in rail transportation and construction method Download PDFInfo
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- WO2024041054A1 WO2024041054A1 PCT/CN2023/095517 CN2023095517W WO2024041054A1 WO 2024041054 A1 WO2024041054 A1 WO 2024041054A1 CN 2023095517 W CN2023095517 W CN 2023095517W WO 2024041054 A1 WO2024041054 A1 WO 2024041054A1
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- prefabricated
- shaped
- shaped track
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- track
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 17
- 239000010959 steel Substances 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000004567 concrete Substances 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 4
- 239000004575 stone Substances 0.000 claims description 4
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
- 238000009417 prefabrication Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000011376 self-consolidating concrete Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 abstract description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/008—Drainage of track
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
- E01B1/004—Ballastless track, e.g. concrete slab trackway, or with asphalt layers with prefabricated elements embedded in fresh concrete or asphalt
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/003—Arrangement of tracks on bridges or in tunnels
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/005—Making of concrete parts of the track in situ
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B29/00—Laying, rebuilding, or taking-up tracks; Tools or machines therefor
- E01B29/16—Transporting, laying, removing, or replacing rails; Moving rails placed on sleepers in the track
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/28—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone
- E01B3/40—Slabs; Blocks; Pot sleepers; Fastening tie-rods to them
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
Definitions
- the invention relates to the technical field of rail transit, and in particular to a prefabricated track structure and construction method for a built-in pump room section of rail transit.
- the built-in pump room section of rail transit currently mainly uses cast-in-situ concrete track bed.
- the construction quality is poor, labor intensive, slow construction speed, and the water pipe reservation accuracy is poor, resulting in frequent water accumulation and generally poor track bed durability.
- the track bed is prone to problems such as falling blocks, cracks, and voids, and the maintenance and repair workload after operation is heavy.
- the designer of the present invention has researched and designed a prefabricated track structure and construction method for built-in pump room sections of rail transit through painstaking research and design, combined with long-term experience and achievements in related industries. to overcome the above shortcomings.
- the object of the present invention is to provide a prefabricated track structure and construction method for a built-in pump room section of rail transit, which can effectively solve the existing technical problems: the existing cast-in-place track structure for a built-in pump room section has poor construction quality and is labor-intensive. Problems such as large size and slow construction speed, and poor water pipe reservation accuracy often lead to water accumulation. Therefore, the durability of the track bed is generally not good, and it is prone to defects such as falling blocks, cracks, and voids, and the maintenance and repair workload after operation is Very big.
- the present invention discloses a prefabricated track structure for rail transit built-in pump room sections, which includes rails, fasteners, prefabricated I-shaped track plates and filling adjustment layers from top to bottom.
- the rail passes through two The fasteners on the side are fixed on the prefabricated I-shaped track plate.
- the prefabricated I-shaped track plate includes a rail bearing platform and a prefabricated plate, both of which are formed in one piece.
- the plane of the prefabricated I-shaped track plate is an I-shaped structure, and is connected by a cross beam in the middle. The two ends of the middle cross beam are U-shaped.
- the cross-section of the prefabricated I-shaped track plate is polygonal, and the lower surfaces of both sides are provided with slope structures to enhance the adaptability to the tunnel section.
- the prefabricated I-shaped track plate A filling adjustment layer is poured between the bottom of the track plate and the shield segments.
- lifting sleeves are respectively provided on the sides of the prefabricated I-shaped track plate.
- the top surface of the U-shaped opening of the prefabricated I-shaped track plate is provided with a ditch cover for walking of patrol personnel or evacuation of personnel in emergency situations.
- the joints between the prefabricated I-shaped track plate and the filling adjustment layer and the joints between the filling adjustment layer and the shield segments are provided with sealing waterproof materials for sealing.
- the bottom of the filling adjustment layer under the middle beam of the prefabricated I-shaped track plate is pre-embedded with water pipes to connect the U-shaped water collection pits with each other.
- steel bars are reserved or implanted at the bottom of the prefabricated I-shaped track plate.
- the filling adjustment layer is made of steel fiber fine stone concrete, self-compacting concrete or special mortar.
- the water pipe is circular or polygonal.
- Step 1 Prefabricating the I-shaped track slab.
- the track slab grinding tool processing, steel bar binding, and precast slab concrete pouring are completed in the factory. After the prefabrication is completed, the track slab is cured to shape the track slab. into high-precision prefabricated I-shaped track slabs;
- Step 2 Transportation and hoisting, transport the prefabricated I-shaped track slab to the track laying surface and then carry out extensive laying;
- Step 3 Fine adjustment of the prefabricated I-shaped track plate
- Step 4 Position and fix the prefabricated I-shaped track plate. Use the frame bracket to support and fix the prefabricated I-shaped track plate that is finely adjusted in place;
- Step 5 Binding steel bars and pre-embedding water pipes
- Step 6 Set the template around the built-in pump pit at the bottom of the track plate
- Step 7 Fill the adjustment layer with concrete pouring and curing
- Step 8 Fastener installation
- Step 9 Installation of rails
- Step 10 Ancillary construction.
- the proposed prefabricated "I"-shaped track slab and construction method for the built-in pump room section of the track bed greatly reduces the amount of steel bar tying and concrete pouring.
- Figure 1 shows a front view of the prefabricated track structure for rail transit built-in pump room sections according to the present invention.
- Figure 2 shows a top view of the invention.
- the prefabricated track structure for the rail transit built-in pump room section includes rail 1, fasteners 2, prefabricated I-shaped track plate 3 and filling adjustment layer 7 from top to bottom.
- the rail 1 passes through the fasteners 2 on both sides.
- the prefabricated I-shaped track plate 3 includes a rail bearing platform and a prefabricated plate, both of which Integrated molding, the plane of the prefabricated I-shaped track plate 3 is an I-shaped structure (as shown in the top view of Figure 2), and a cross beam is used to connect it in the middle.
- the two ends of the middle cross beam are U-shaped openings, thereby forming a U-shaped middle part.
- Water collection pit 8 the section of the prefabricated I-shaped track plate 3 is polygonal, and the lower surfaces on both sides are provided with slope surface structures to enhance the adaptability to the tunnel section.
- the filling adjustment layer 7 is only poured at the lower part of the I-shaped structure and is not poured within the U-shaped opening range at both ends of the cross beam, so that it can Equipment such as water pumps can be installed within the U-shaped structure.
- a filling adjustment layer 7 is poured between the bottom of the prefabricated I-shaped track plate 3 and the shield segment.
- the filling adjustment layer 7 is made of steel fiber fine stone concrete.
- lifting sleeves 5 are respectively provided on the sides of the prefabricated I-shaped track plate 3. It is used to fix the prefabricated I-shaped track plate 3.
- a ditch cover 4 is provided on the top surface of the U-shaped opening of the prefabricated I-shaped track plate 3 for walking of patrol personnel or evacuation of personnel in emergency situations.
- sealing and waterproof materials 6 are provided at the joints between the prefabricated I-shaped track plate 3 and the filling adjustment layer 7 and between the filling adjustment layer 7 and the shield segments for sealing.
- the bottom of the filling adjustment layer 7 under the middle beam of the prefabricated I-shaped track plate 3 is pre-embedded with a water pipe 9 so that the U-shaped water collection pits 8 are connected to each other.
- steel bars can be reserved or implanted in the shield segment area at the bottom of the prefabricated I-shaped track plate 3 to strengthen the connection between the track bed and the shield segment.
- the filling adjustment layer can be made of steel fiber fine stone concrete, self-compacting concrete, special mortar and other materials with good fluidity.
- the prefabricated I-shaped track plate 3 is provided with lifting sleeves and other devices on the plate side or on the upper surface of the plate for lifting or fixing the track plate.
- the water pipe may be circular or polygonal.
- the construction method of the prefabricated track structure for the built-in pump room section of rail transit of the present invention mainly includes the following steps:
- Step 1 Prefabricated I-shaped track plate 3.
- the track plate grinding tool processing, steel bar binding, and prefabricated slab concrete pouring are completed in the factory. After the prefabrication is completed, the track plate is cured to form a high-precision prefabricated I-shaped track plate 3.
- Step 2 Transportation and hoisting.
- the prefabricated I-shaped track slab 3 is transported to the construction site by car, and then the prefabricated I-shaped track slab 3 is transported to the track laying operation surface by a transport truck, and then is transported to the track laying operation surface for extensive laying.
- Step 3 Fine adjustment of prefabricated I-shaped track plate 3.
- a small gantry crane is used to fine-tune the prefabricated I-shaped track plate 3.
- Step 4 Position and fix the prefabricated I-shaped track plate 3.
- the prefabricated I-shaped track plate 3 that has been finely adjusted in place is supported and fixed using rack plate brackets.
- Each prefabricated I-shaped track plate 3 is provided with 4 or more support points as needed.
- Step 5 Bundle the steel bars and embed the water pipe 9. After the steel bars are tied, the water pipes are pre-embedded in the cross beams of the prefabricated I-shaped track slab 3.
- Step 6 Set the template around the built-in pump pit at the bottom of the track plate. After the prefabricated I-shaped track plate 3 is fixed, the pump pit template for the built-in pump room is installed.
- Step 7 Fill the adjustment layer 7 with concrete pouring and curing. After clearing the water at the bottom of the slab, pour the filling adjustment layer 7, and after the strength of the filling adjustment layer 7 reaches a certain strength, take out the support device of the prefabricated plate erected in step 4.
- Step 8 Fastener installation. After the filling adjustment layer 7 reaches a certain strength, the upper fasteners are installed. The installation sequence is the elastic pad under the iron pad ⁇ the iron pad ⁇ the elastic pad under the rail.
- Step nine Installation of rails. Use a rail transport vehicle to bring the rails to the working surface, and use the transport vehicle to unload the rails to the installation point and spread them out. Move the rails into the rail bearing grooves of the fastener iron pads, and install the gauge blocks, connecting bolts and elastic strips, etc. Fastener components.
- Step 10 Ancillary construction. After the construction of the main structure is completed, the waterproof material in the pump pit will be painted and the ditch cover on the upper surface will be installed.
- the present invention is used in the field of rail transit to replace the traditional cast-in-place built-in pump room track bed. It has the characteristics of simple construction process, fast construction speed, high construction precision, low labor intensity, good aesthetics, good durability, etc. In line with the current rail transit environmental protection, high efficiency and disease reduction In the direction of harm, the social benefits are huge.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Road Paving Structures (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
A prefabricated track structure for a built-in pump house section in rail transportation and a construction method. The track structure comprises a steel rail, fasteners, a prefabricated I-shaped track slab, and a filling adjustment layer in sequence from top to bottom. The steel rail is fixed to the upper surface of the prefabricated I-shaped track slab by means of the fasteners on both sides, and the filling adjustment layer is provided below the prefabricated I-shaped track slab; the prefabricated I-shaped track slab comprises a rail bearing platform and a prefabricated slab, the rail bearing platform and the prefabricated slab are integrally formed, the plane of the prefabricated I-shaped track slab is of an I-shaped structure, and the middle of which is connected by means of a cross beam. Therefore, the present invention is applicable to the field of rail transportation, replaces a traditional cast-in-situ built-in pump house track bed, has the advantages of a simple construction process, a high construction speed, high construction precision, low labor intensity, good aesthetics, good durability and the like, is in line with the current direction of environmental protection, high efficiency, and disease reduction in rail transportation, and achieves enormous social benefits.
Description
本发明涉及轨道交通的技术领域,尤其涉及一种轨道交通内置式泵房地段用预制轨道结构及施工方法。The invention relates to the technical field of rail transit, and in particular to a prefabricated track structure and construction method for a built-in pump room section of rail transit.
轨道交通内置式泵房地段当前主要是采用现浇混凝土道床,存在施工质量差,耗费人力大,施工速度慢,且过水管预留精度较差,导致经常出现积水,道床耐久性普遍不好,道床易出现掉块、裂缝、脱空,运营后养护维修工作量很大等问题。The built-in pump room section of rail transit currently mainly uses cast-in-situ concrete track bed. The construction quality is poor, labor intensive, slow construction speed, and the water pipe reservation accuracy is poor, resulting in frequent water accumulation and generally poor track bed durability. , the track bed is prone to problems such as falling blocks, cracks, and voids, and the maintenance and repair workload after operation is heavy.
为此,本发明的设计者有鉴于上述缺陷,通过潜心研究和设计,综合长期多年从事相关产业的经验和成果,研究设计出一种轨道交通内置式泵房地段用预制轨道结构及施工方法,以克服上述缺陷。To this end, in view of the above-mentioned defects, the designer of the present invention has researched and designed a prefabricated track structure and construction method for built-in pump room sections of rail transit through painstaking research and design, combined with long-term experience and achievements in related industries. to overcome the above shortcomings.
发明内容Contents of the invention
本发明的目的在于提供一种轨道交通内置式泵房地段用预制轨道结构及施工方法,能有效解决现有的技术问题:现有内置式泵房地段现浇轨道结构存在施工质量差、耗费人力大、施工速度慢等问题,且因过水管预留精度较差,导致经常出现积水,因此道床耐久性普遍不好,易出现掉块、裂缝、脱空等病害,运营后养护维修工作量很大。The object of the present invention is to provide a prefabricated track structure and construction method for a built-in pump room section of rail transit, which can effectively solve the existing technical problems: the existing cast-in-place track structure for a built-in pump room section has poor construction quality and is labor-intensive. Problems such as large size and slow construction speed, and poor water pipe reservation accuracy often lead to water accumulation. Therefore, the durability of the track bed is generally not good, and it is prone to defects such as falling blocks, cracks, and voids, and the maintenance and repair workload after operation is Very big.
为实现上述目的,本发明公开了一种轨道交通内置式泵房地段用预制轨道结构,从上至下依次包含钢轨、扣件、预制工字型轨道板和填充调整层,所述钢轨通过两侧的扣件固定于预制工字型轨道板的上
表面,所述预制工字型轨道板的下方设有填充调整层,其特征在于:In order to achieve the above object, the present invention discloses a prefabricated track structure for rail transit built-in pump room sections, which includes rails, fasteners, prefabricated I-shaped track plates and filling adjustment layers from top to bottom. The rail passes through two The fasteners on the side are fixed on the prefabricated I-shaped track plate. On the surface, there is a filling adjustment layer below the prefabricated I-shaped track plate, which is characterized by:
所述预制工字型轨道板包括承轨台及预制板,两者一体成型,所述预制工字型轨道板的平面为工字型结构,其中间采用横梁连接,中间横梁的两端呈U字型开口,从而形成中部的U型集水坑,所述预制工字型轨道板的断面为多边形,两侧下表面设有斜坡面结构以增强对隧道断面的适应性,所述预制工字型轨道板的底部与盾构管片间灌注填充调整层。The prefabricated I-shaped track plate includes a rail bearing platform and a prefabricated plate, both of which are formed in one piece. The plane of the prefabricated I-shaped track plate is an I-shaped structure, and is connected by a cross beam in the middle. The two ends of the middle cross beam are U-shaped. The cross-section of the prefabricated I-shaped track plate is polygonal, and the lower surfaces of both sides are provided with slope structures to enhance the adaptability to the tunnel section. The prefabricated I-shaped track plate A filling adjustment layer is poured between the bottom of the track plate and the shield segments.
其中:所述预制工字型轨道板的板侧分别设置有起吊套管。Wherein: lifting sleeves are respectively provided on the sides of the prefabricated I-shaped track plate.
其中:所述预制工字型轨道板的U字型开口的顶面设置水沟盖板以用于巡道人员走行或紧急情况下的人员疏散。Among them: the top surface of the U-shaped opening of the prefabricated I-shaped track plate is provided with a ditch cover for walking of patrol personnel or evacuation of personnel in emergency situations.
其中:所述预制工字型轨道板与填充调整层接缝处及填充调整层与盾构管片接缝处均设有密封防水材料以进行密封。Among them: the joints between the prefabricated I-shaped track plate and the filling adjustment layer and the joints between the filling adjustment layer and the shield segments are provided with sealing waterproof materials for sealing.
其中:所述预制工字型轨道板的中间横梁下的填充调整层的底部预埋有以过水管使各U型集水坑之间互相连通。Among them: the bottom of the filling adjustment layer under the middle beam of the prefabricated I-shaped track plate is pre-embedded with water pipes to connect the U-shaped water collection pits with each other.
其中:所述预制工字型轨道板底部预留或植入钢筋。Among them: steel bars are reserved or implanted at the bottom of the prefabricated I-shaped track plate.
其中:所述填充调整层采用钢纤维细石混凝土、自密实混凝土或特种砂浆的材料。Among them: the filling adjustment layer is made of steel fiber fine stone concrete, self-compacting concrete or special mortar.
其中:所述过水管为圆形或多边形。Wherein: the water pipe is circular or polygonal.
还公开了一种轨道交通内置式泵房地段用预制轨道结构的施工工法,其特征在于包含如下步骤:Also disclosed is a construction method for prefabricated track structures for built-in pump room sections of rail transit, which is characterized by including the following steps:
步骤一:预制工字型轨道板预制,在工厂内完成轨道板磨具加工、钢筋绑扎、预制板混凝土浇筑,并在预制完成后进行轨道板养生,形
成高精度的预制工字型轨道板;Step 1: Prefabricating the I-shaped track slab. The track slab grinding tool processing, steel bar binding, and precast slab concrete pouring are completed in the factory. After the prefabrication is completed, the track slab is cured to shape the track slab. into high-precision prefabricated I-shaped track slabs;
步骤二:运输及吊装,将预制工字型轨道板运输至铺轨作业面后进行粗放;Step 2: Transportation and hoisting, transport the prefabricated I-shaped track slab to the track laying surface and then carry out extensive laying;
步骤三:预制工字型轨道板精调;Step 3: Fine adjustment of the prefabricated I-shaped track plate;
步骤四:预制工字型轨道板定位与固定,将精调到位的预制工字型轨道板采用架板支架进行支撑、固定;Step 4: Position and fix the prefabricated I-shaped track plate. Use the frame bracket to support and fix the prefabricated I-shaped track plate that is finely adjusted in place;
步骤五:钢筋绑扎及预埋过水管;Step 5: Binding steel bars and pre-embedding water pipes;
步骤六:轨道板底内置式泵坑四周模板设置;Step 6: Set the template around the built-in pump pit at the bottom of the track plate;
步骤七:填充调整层混凝土灌注及养护;Step 7: Fill the adjustment layer with concrete pouring and curing;
步骤八:扣件安装;Step 8: Fastener installation;
步骤九:钢轨的安装;Step 9: Installation of rails;
步骤十:附属施工。Step 10: Ancillary construction.
通过上述内容可知,本发明的轨道交通内置式泵房地段用预制轨道结构及施工方法具有如下效果:It can be seen from the above that the prefabricated track structure and construction method for built-in rail transit pump room sections of the present invention have the following effects:
1、提出的道床内置式泵房地段的预制“工”字型轨道板及施工工法,钢筋绑扎、混凝土浇筑量大幅减小。1. The proposed prefabricated "I"-shaped track slab and construction method for the built-in pump room section of the track bed greatly reduces the amount of steel bar tying and concrete pouring.
2、具有施工工序简单、劳动强度低,施工精度高、施工效率高、耐久性好等特点,解决了现浇内置式泵房轨道结构的诸多缺陷问题。2. It has the characteristics of simple construction process, low labor intensity, high construction precision, high construction efficiency and good durability. It solves many defects of the cast-in-place built-in pump room track structure.
3、能有效代替传统的现浇内置式泵房道床,符合当前轨道交通环保、高效及减少病害的方向,社会效益巨大。3. It can effectively replace the traditional cast-in-place built-in pump room track bed, which is in line with the current direction of environmental protection, efficiency and disease reduction in rail transit, and has huge social benefits.
本发明的详细内容可通过后述的说明及所附图而得到。
The details of the present invention can be understood from the following description and the accompanying drawings.
图1显示了本发明的轨道交通内置式泵房地段用预制轨道结构的正视图。Figure 1 shows a front view of the prefabricated track structure for rail transit built-in pump room sections according to the present invention.
图2显示了本发明的俯视图。Figure 2 shows a top view of the invention.
参见图1和2,显示了本发明的轨道交通内置式泵房地段用预制轨道结构。Referring to Figures 1 and 2, the prefabricated track structure for rail transit built-in pump room sections according to the present invention is shown.
所述轨道交通内置式泵房地段用预制轨道结构从上至下依次包含钢轨1、扣件2、预制工字型轨道板3和填充调整层7,所述钢轨1通过两侧的扣件2固定于预制工字型轨道板3的上表面,所述预制工字型轨道板3的下方设有填充调整层7,所述预制工字型轨道板3包括承轨台及预制板,两者一体成型,所述预制工字型轨道板3的平面为工字型结构(如图2的俯视图),其中间采用横梁连接,中间横梁的两端呈U字型开口,从而形成中部的U型集水坑8,所述预制工字型轨道板3的断面为多边形,两侧下表面设有斜坡面结构,以增强对隧道断面的适应性。The prefabricated track structure for the rail transit built-in pump room section includes rail 1, fasteners 2, prefabricated I-shaped track plate 3 and filling adjustment layer 7 from top to bottom. The rail 1 passes through the fasteners 2 on both sides. Fixed on the upper surface of the prefabricated I-shaped track plate 3, a filling adjustment layer 7 is provided below the prefabricated I-shaped track plate 3. The prefabricated I-shaped track plate 3 includes a rail bearing platform and a prefabricated plate, both of which Integrated molding, the plane of the prefabricated I-shaped track plate 3 is an I-shaped structure (as shown in the top view of Figure 2), and a cross beam is used to connect it in the middle. The two ends of the middle cross beam are U-shaped openings, thereby forming a U-shaped middle part. Water collection pit 8, the section of the prefabricated I-shaped track plate 3 is polygonal, and the lower surfaces on both sides are provided with slope surface structures to enhance the adaptability to the tunnel section.
其中,由于预制工字型轨道板3采用横梁连接,外形类似工字型,所述填充调整层7仅在工字型结构下部浇筑,在横梁两端的U字型开口范围内不浇筑,从而能在U型结构范围内可设置抽水泵等设备。Among them, since the prefabricated I-shaped track plate 3 is connected by cross beams and has an appearance similar to the I-shape, the filling adjustment layer 7 is only poured at the lower part of the I-shaped structure and is not poured within the U-shaped opening range at both ends of the cross beam, so that it can Equipment such as water pumps can be installed within the U-shaped structure.
其中,所述预制工字型轨道板3的底部与盾构管片间灌注填充调整层7,所述填充调整层7采用钢纤维细石混凝土。Among them, a filling adjustment layer 7 is poured between the bottom of the prefabricated I-shaped track plate 3 and the shield segment. The filling adjustment layer 7 is made of steel fiber fine stone concrete.
其中,所述预制工字型轨道板3的板侧分别设置有起吊套管5,
以用于固定预制工字型轨道板3。Among them, lifting sleeves 5 are respectively provided on the sides of the prefabricated I-shaped track plate 3. It is used to fix the prefabricated I-shaped track plate 3.
其中,所述预制工字型轨道板3的U字型开口的顶面设置水沟盖板4,以用于巡道人员走行或紧急情况下的人员疏散。Among them, a ditch cover 4 is provided on the top surface of the U-shaped opening of the prefabricated I-shaped track plate 3 for walking of patrol personnel or evacuation of personnel in emergency situations.
其中,所述预制工字型轨道板3与填充调整层7接缝处及填充调整层7与盾构管片接缝处均设有密封防水材料6以进行密封。Among them, sealing and waterproof materials 6 are provided at the joints between the prefabricated I-shaped track plate 3 and the filling adjustment layer 7 and between the filling adjustment layer 7 and the shield segments for sealing.
其中,所述预制工字型轨道板3的中间横梁下的填充调整层7的底部预埋有过水管9,使各U型集水坑8之间互相连通。Among them, the bottom of the filling adjustment layer 7 under the middle beam of the prefabricated I-shaped track plate 3 is pre-embedded with a water pipe 9 so that the U-shaped water collection pits 8 are connected to each other.
其中,所述预制工字型轨道板3底部盾构管片范围可预留或植入钢筋,加强道床与盾构管片的连接性。Among them, steel bars can be reserved or implanted in the shield segment area at the bottom of the prefabricated I-shaped track plate 3 to strengthen the connection between the track bed and the shield segment.
其中,所述填充调整层可采用钢纤维细石混凝土、自密实混凝土、特种砂浆等流动性较好的材料。Among them, the filling adjustment layer can be made of steel fiber fine stone concrete, self-compacting concrete, special mortar and other materials with good fluidity.
其中,所述预制工字型轨道板3的板侧或板上表面设置有起吊套管等用于起吊或固定轨道板的装置。Among them, the prefabricated I-shaped track plate 3 is provided with lifting sleeves and other devices on the plate side or on the upper surface of the plate for lifting or fixing the track plate.
其中,所述过水管可为圆形或多边形。Wherein, the water pipe may be circular or polygonal.
本发明的轨道交通内置式泵房地段用预制轨道结构的施工工法主要包含如下步骤:The construction method of the prefabricated track structure for the built-in pump room section of rail transit of the present invention mainly includes the following steps:
步骤一:预制工字型轨道板3预制。在工厂内完成轨道板磨具加工、钢筋绑扎、预制板混凝土浇筑,并在预制完成后进行轨道板养生,形成高精度的预制工字型轨道板3。Step 1: Prefabricated I-shaped track plate 3. The track plate grinding tool processing, steel bar binding, and prefabricated slab concrete pouring are completed in the factory. After the prefabrication is completed, the track plate is cured to form a high-precision prefabricated I-shaped track plate 3.
步骤二:运输及吊装。采用汽车将预制工字型轨道板3运送至施工现场,再采用运板车将预制工字型轨道板3运至铺轨作业面,运输至铺轨作业面后进行粗放。
Step 2: Transportation and hoisting. The prefabricated I-shaped track slab 3 is transported to the construction site by car, and then the prefabricated I-shaped track slab 3 is transported to the track laying operation surface by a transport truck, and then is transported to the track laying operation surface for extensive laying.
步骤三:预制工字型轨道板3精调。采用小型龙门吊对预制工字型轨道板3进行精调。Step 3: Fine adjustment of prefabricated I-shaped track plate 3. A small gantry crane is used to fine-tune the prefabricated I-shaped track plate 3.
步骤四:预制工字型轨道板3定位与固定。将精调到位的预制工字型轨道板3采用架板支架进行支撑、固定。每块预制工字型轨道板3根据需要设置4个及以上撑点。Step 4: Position and fix the prefabricated I-shaped track plate 3. The prefabricated I-shaped track plate 3 that has been finely adjusted in place is supported and fixed using rack plate brackets. Each prefabricated I-shaped track plate 3 is provided with 4 or more support points as needed.
步骤五:钢筋绑扎及预埋过水管9。钢筋绑扎完成后将过水管预埋在预制工字型轨道板3的横梁内。Step 5: Bundle the steel bars and embed the water pipe 9. After the steel bars are tied, the water pipes are pre-embedded in the cross beams of the prefabricated I-shaped track slab 3.
步骤六:轨道板底内置式泵坑四周模板设置。预制工字型轨道板3固定后进行内置式泵房地段泵坑模板安装。Step 6: Set the template around the built-in pump pit at the bottom of the track plate. After the prefabricated I-shaped track plate 3 is fixed, the pump pit template for the built-in pump room is installed.
步骤七:填充调整层7混凝土灌注及养护。清理板底积水后进行填充调整层7浇筑,并在填充调整层7强度达到一定强度后取出步骤四中架设的预制板的支撑装置。Step 7: Fill the adjustment layer 7 with concrete pouring and curing. After clearing the water at the bottom of the slab, pour the filling adjustment layer 7, and after the strength of the filling adjustment layer 7 reaches a certain strength, take out the support device of the prefabricated plate erected in step 4.
步骤八:扣件安装。填充调整层7达到一定强度后,进行上部扣件的安装,安装顺序为铁垫板下弹性垫板→铁垫板→轨下弹性垫板。Step 8: Fastener installation. After the filling adjustment layer 7 reaches a certain strength, the upper fasteners are installed. The installation sequence is the elastic pad under the iron pad → the iron pad → the elastic pad under the rail.
步骤九:钢轨的安装。采用轨道运输车将钢轨至作业面,并通过运输车将钢轨卸至安装点散布开,将钢轨拨至扣件铁垫板的承轨槽内,并安装轨距块、连接螺栓及弹条等扣件部件。Step nine: Installation of rails. Use a rail transport vehicle to bring the rails to the working surface, and use the transport vehicle to unload the rails to the installation point and spread them out. Move the rails into the rail bearing grooves of the fastener iron pads, and install the gauge blocks, connecting bolts and elastic strips, etc. Fastener components.
步骤十:附属施工。主体结构施工完后,进行泵坑内防水材料涂刷及上表面水沟盖板安装。Step 10: Ancillary construction. After the construction of the main structure is completed, the waterproof material in the pump pit will be painted and the ditch cover on the upper surface will be installed.
由此可见,本发明用于轨道交通领域,代替传统的现浇内置式泵房道床,具有施工工序简单、施工速度快、施工精度高、劳动强度低、美观性好、耐久性好等特点,符合当前轨道交通环保、高效及减少病
害的方向,社会效益巨大。It can be seen that the present invention is used in the field of rail transit to replace the traditional cast-in-place built-in pump room track bed. It has the characteristics of simple construction process, fast construction speed, high construction precision, low labor intensity, good aesthetics, good durability, etc. In line with the current rail transit environmental protection, high efficiency and disease reduction In the direction of harm, the social benefits are huge.
显而易见的是,以上的描述和记载仅仅是举例而不是为了限制本发明的公开内容、应用或使用。虽然已经在实施例中描述过并且在附图中描述了实施例,但本发明不限制由附图示例和在实施例中描述的作为目前认为的最佳模式以实施本发明的教导的特定例子,本发明的范围将包括落入前面的说明书和所附的权利要求的任何实施例。
It is obvious that the above description and recording are only examples and are not intended to limit the disclosure, application or uses of the present invention. While the embodiments have been described in the embodiments and illustrated in the drawings, the invention is not limited to the specific examples exemplified by the drawings and described in the embodiments as presently considered to be the best modes for carrying out the teachings of the invention. , the scope of the invention is intended to include any embodiments falling within the preceding description and appended claims.
Claims (9)
- 一种轨道交通内置式泵房地段用预制轨道结构,从上至下依次包含钢轨、扣件、预制工字型轨道板和填充调整层,所述钢轨通过两侧的扣件固定于预制工字型轨道板的上表面,所述预制工字型轨道板的下方设有填充调整层,其特征在于:A prefabricated track structure for rail transit built-in pump room sections, which includes rails, fasteners, prefabricated I-shaped track plates and filling adjustment layers from top to bottom. The rails are fixed to the prefabricated I-shaped rails through fasteners on both sides. On the upper surface of the prefabricated I-shaped track plate, a filling adjustment layer is provided below the prefabricated I-shaped track plate, which is characterized by:所述预制工字型轨道板包括承轨台及预制板,两者一体成型,所述预制工字型轨道板的平面为工字型结构,其中间采用横梁连接,中间横梁的两端呈U字型开口,从而形成中部的U型集水坑,所述预制工字型轨道板的断面为多边形,两侧下表面设有斜坡面结构以增强对隧道断面的适应性,所述预制工字型轨道板的底部与盾构管片间灌注填充调整层。The prefabricated I-shaped track plate includes a rail bearing platform and a prefabricated plate, both of which are formed in one piece. The plane of the prefabricated I-shaped track plate is an I-shaped structure, and is connected by a cross beam in the middle. The two ends of the middle cross beam are U-shaped. The cross-section of the prefabricated I-shaped track plate is polygonal, and the lower surfaces of both sides are provided with slope structures to enhance the adaptability to the tunnel section. The prefabricated I-shaped track plate A filling adjustment layer is poured between the bottom of the track plate and the shield segments.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述预制工字型轨道板的板侧分别设置有起吊套管。The prefabricated track structure for built-in pump room sections of rail transit according to claim 1, characterized in that: the prefabricated I-shaped track plate is provided with lifting casings on each side of the plate.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述预制工字型轨道板的U字型开口的顶面设置水沟盖板以用于巡道人员走行或紧急情况下的人员疏散。The prefabricated track structure for rail transit built-in pump room sections according to claim 1, characterized in that: a ditch cover is provided on the top surface of the U-shaped opening of the prefabricated I-shaped track plate for patrol personnel. Evacuation during walking or emergency situations.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述预制工字型轨道板与填充调整层接缝处及填充调整层与盾构管片接缝处均设有密封防水材料以进行密封。The prefabricated track structure for the built-in pump room section of rail transit according to claim 1, characterized in that: the joint between the prefabricated I-shaped track plate and the filling adjustment layer and the joint between the filling adjustment layer and the shield segment All are equipped with sealing waterproof materials for sealing.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述预制工字型轨道板的中间横梁下的填充调整层的底部预埋有以过水管使各U型集水坑之间互相连通。The prefabricated track structure for rail transit built-in pump room sections according to claim 1, characterized in that: the bottom of the filling adjustment layer under the middle beam of the prefabricated I-shaped track plate is pre-embedded with water pipes to make each U The water collection pits are interconnected.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构, 其特征在于:所述预制工字型轨道板底部预留或植入钢筋。The prefabricated track structure for the built-in pump room section of rail transit as claimed in claim 1, It is characterized in that steel bars are reserved or implanted at the bottom of the prefabricated I-shaped track plate.
- 如权利要求1所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述填充调整层采用钢纤维细石混凝土、自密实混凝土或特种砂浆的材料。The prefabricated track structure for rail transit built-in pump room sections according to claim 1, characterized in that the filling adjustment layer is made of steel fiber fine stone concrete, self-compacting concrete or special mortar.
- 如权利要求5所述的轨道交通内置式泵房地段用预制轨道结构,其特征在于:所述过水管为圆形或多边形。The prefabricated track structure for rail transit built-in pump room sections according to claim 5, characterized in that: the water pipe is circular or polygonal.
- 一种轨道交通内置式泵房地段用预制轨道结构的施工工法,其特征在于包含如下步骤:A construction method for prefabricated track structures in built-in pump room sections of rail transit, which is characterized by including the following steps:步骤一:预制工字型轨道板预制,在工厂内完成轨道板磨具加工、钢筋绑扎、预制板混凝土浇筑,并在预制完成后进行轨道板养生,形成高精度的预制工字型轨道板;Step 1: Prefabricating the prefabricated I-shaped track slab. The track slab grinding tool processing, steel bar binding, and precast slab concrete pouring are completed in the factory. After the prefabrication is completed, the track slab is cured to form a high-precision prefabricated I-shaped track slab;步骤二:运输及吊装,将预制工字型轨道板运输至铺轨作业面后进行粗放;Step 2: Transportation and hoisting, transport the prefabricated I-shaped track slab to the track laying surface and then carry out extensive laying;步骤三:预制工字型轨道板精调;Step 3: Fine adjustment of the prefabricated I-shaped track plate;步骤四:预制工字型轨道板定位与固定,将精调到位的预制工字型轨道板采用架板支架进行支撑、固定;Step 4: Position and fix the prefabricated I-shaped track plate. Use the frame bracket to support and fix the prefabricated I-shaped track plate that is finely adjusted in place;步骤五:钢筋绑扎及预埋过水管;Step 5: Binding steel bars and pre-embedding water pipes;步骤六:轨道板底内置式泵坑四周模板设置;Step 6: Set the template around the built-in pump pit at the bottom of the track plate;步骤七:填充调整层混凝土灌注及养护;Step 7: Fill the adjustment layer with concrete pouring and curing;步骤八:扣件安装;Step 8: Fastener installation;步骤九:钢轨的安装;Step 9: Installation of rails;步骤十:附属施工。 Step 10: Ancillary construction.
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JP2023574253A JP2024535168A (en) | 2022-08-26 | 2023-05-22 | Prefabricated track structure and construction method for rail transit built-in pump room section |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015229829A (en) * | 2014-06-03 | 2015-12-21 | 大成建設株式会社 | Track for railway vehicle and construction method for the track |
CN205474612U (en) * | 2016-03-01 | 2016-08-17 | 北京城建设计发展集团股份有限公司 | Prefabricated track board of H type for urban rail transit |
CN210561479U (en) * | 2019-08-06 | 2020-05-19 | 中铁工程设计咨询集团有限公司 | Plate type ballast bed structure for built-in pump room of subway |
CN214362569U (en) * | 2020-12-07 | 2021-10-08 | 中铁上海设计院集团有限公司 | Prefabricated ballast bed structure of built-in pump house department for urban rail transit |
CN114183197A (en) * | 2021-11-15 | 2022-03-15 | 粤水电建筑安装建设有限公司 | Interval tunnel of urban rail transit is with built-in pump house |
CN115613398A (en) * | 2022-08-26 | 2023-01-17 | 北京城建设计发展集团股份有限公司 | Prefabricated track structure for built-in pump house section of track traffic and construction method |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN215329049U (en) * | 2021-08-05 | 2021-12-28 | 中铁二院工程集团有限责任公司 | Track structure with drainage pump station in integral ballast bed |
CN114808555B (en) * | 2022-06-17 | 2023-11-28 | 中铁上海设计院集团有限公司 | Prefabricated frame plate and application method thereof |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015229829A (en) * | 2014-06-03 | 2015-12-21 | 大成建設株式会社 | Track for railway vehicle and construction method for the track |
CN205474612U (en) * | 2016-03-01 | 2016-08-17 | 北京城建设计发展集团股份有限公司 | Prefabricated track board of H type for urban rail transit |
CN210561479U (en) * | 2019-08-06 | 2020-05-19 | 中铁工程设计咨询集团有限公司 | Plate type ballast bed structure for built-in pump room of subway |
CN214362569U (en) * | 2020-12-07 | 2021-10-08 | 中铁上海设计院集团有限公司 | Prefabricated ballast bed structure of built-in pump house department for urban rail transit |
CN114183197A (en) * | 2021-11-15 | 2022-03-15 | 粤水电建筑安装建设有限公司 | Interval tunnel of urban rail transit is with built-in pump house |
CN115613398A (en) * | 2022-08-26 | 2023-01-17 | 北京城建设计发展集团股份有限公司 | Prefabricated track structure for built-in pump house section of track traffic and construction method |
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