CN118668744B - Assembled track structure and construction method thereof - Google Patents
Assembled track structure and construction method thereof Download PDFInfo
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- CN118668744B CN118668744B CN202411162045.9A CN202411162045A CN118668744B CN 118668744 B CN118668744 B CN 118668744B CN 202411162045 A CN202411162045 A CN 202411162045A CN 118668744 B CN118668744 B CN 118668744B
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- 238000010276 construction Methods 0.000 title claims abstract description 41
- 238000009434 installation Methods 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 7
- 238000007689 inspection Methods 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 57
- 229910000831 Steel Inorganic materials 0.000 claims description 52
- 239000010959 steel Substances 0.000 claims description 52
- 238000011065 in-situ storage Methods 0.000 claims description 33
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000004873 anchoring Methods 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/01—Flat foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/20—Miscellaneous comprising details of connection between elements
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
本发明公开了一种装配式轨道结构及其施工方法，涉及轨道交通技术领域，包括以下步骤：S100、在土建线下基础施工完成后检查坑底板的浇筑，以形成现浇底板，并在浇筑检查坑底板混凝土前预埋波纹套筒，以在浇筑后现浇底板顶部两侧均预留出两列预留孔，每列预留孔分为多组，每组数量为四个，且四个预留孔呈对角设置；本发明采用装配式结构，安装速度快、节省施工周期，且锚栓定位工装结构的设置使连接锚栓可准确调整，实现了预制立柱的提前精确定位，连接方式安全便捷，保证预制立柱安装的基础精度，从而实现装配式轨道结构正向施工，节省施工人员投入和整个工期。
The invention discloses an assembled track structure and a construction method thereof, which relate to the technical field of rail transit, and comprise the following steps: S100, after the foundation construction of a civil engineering line is completed, the pouring of a pit floor is checked to form a cast-in-place floor, and a corrugated sleeve is pre-buried before pouring the concrete of the inspection pit floor, so that two rows of reserved holes are reserved on both sides of the top of the cast-in-place floor after pouring, and each row of reserved holes is divided into a plurality of groups, each group has four holes, and the four reserved holes are arranged diagonally; the invention adopts an assembled structure, has a fast installation speed, saves the construction period, and the setting of the anchor bolt positioning tooling structure enables the connecting anchor bolts to be accurately adjusted, realizes the early and precise positioning of the prefabricated columns, the connection method is safe and convenient, and the basic accuracy of the installation of the prefabricated columns is ensured, thereby realizing the forward construction of the assembled track structure, saving the investment of construction personnel and the entire construction period.
Description
Technical Field
The invention relates to the technical field of rail transit, in particular to an assembled rail structure and a construction method thereof.
Background
The geometric position acceptance criteria of track gauge, horizontal, track direction, height and the like in the track engineering construction acceptance are very high, the error is generally not more than 2mm, large construction machinery is difficult to adopt due to narrow construction sites in a warehouse, the number of prefabricated upright posts is large, the volume and the weight are large, the single upright post can reach more than 300 kg, and the problem of difficult upright post installation is more remarkable. Meanwhile, compared with the traditional prefabricated track structure, the prefabricated upright post track structure is high in height, the track geometric type position can be greatly influenced by slight deviation and inclination, the difficulty in manual installation is high, the hoisting efficiency is low, fine adjustment is difficult, secondary concrete pouring exists at the connecting part after temporary positioning, and the traditional track construction tool is mainly composed of tools such as a track gauge rod and a screw rod, so that the number of parts is large, the precision is low, and the requirement on acceptance precision and the work efficiency are difficult to meet in forward construction.
Therefore, the assembly type track structure with high positioning precision, portability and high efficiency and the construction method thereof are required to be provided to ensure the positioning precision of the prefabricated upright posts and meet the acceptance requirements of track engineering.
Disclosure of Invention
The invention aims to provide an assembled track structure and a construction method thereof, which have the advantages of simple structure and reasonable design, and can solve the problem of rapid and accurate installation of an upright post of the assembled track structure in forward construction, ensure the foundation precision of the installation of the upright post, thereby realizing the forward construction of the assembled track structure, saving the investment of constructors and the whole construction period and improving the construction safety.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
the construction method of the assembled track structure comprises the following steps:
S100, checking pouring of a pit bottom plate after foundation construction under a civil engineering line is completed to form a cast-in-situ bottom plate, and pre-burying corrugated sleeves before pouring concrete of the pit bottom plate to reserve two rows of reserved holes on two sides of the top of the cast-in-situ bottom plate after pouring, wherein each row of reserved holes is divided into four groups, and the four reserved holes are diagonally arranged;
S200, pouring the concrete of the bottom plate after embedding the corrugated sleeve, reserving reinforcing steel bars for installing the retaining wall later on the cast-in-situ bottom plate, and retesting and checking the elevation of the cast-in-situ bottom plate, the positioning of the embedded corrugated sleeve, the existence of blockage and water accumulation on the inner wall of the corrugated sleeve after the civil engineering is completed;
s300, surrounding an upper template on the periphery of each group of reserved holes, placing connecting anchors in each reserved hole, and positioning and adjusting the positions of all the connecting anchors;
s400, after the adjustment is finished, mixing cement-based grouting materials according to the material requirement, pouring slurry into the template, so that the slurry is filled into the template, flowing into all the reserved holes from the template, and after the grouting is finished, removing the template after the slurry is filled and reaches the preset strength;
s500, after curing of grouting materials is completed, transporting the prefabricated upright post to an installation site, hoisting the prefabricated upright post, accurately positioning the prefabricated upright post and connecting the prefabricated upright post with pre-buried connecting anchor bolts in a matched mode, and then fixing four connecting anchor bolts on the prefabricated upright post by adopting double nuts;
and S600, after the installation of the prefabricated upright post, installing and fixing an iron base plate of the fastener on the top of the prefabricated upright post, tightly screwing the iron base plate, placing the base plate on the iron base plate, installing the steel rail on the iron base plate on the top of the prefabricated upright post, and installing the fastener so as to complete the installation of the track system.
As a preferred aspect of the present invention, in S300, the positioning and adjusting of the position and height of the connecting anchor bolt specifically includes the steps of:
s301, hoisting the anchor bolt positioning tool structure manufactured in advance to a position at one end of an inspection pit for installing a prefabricated upright post, and connecting the anchor bolt positioning tool structure with a connecting anchor bolt;
s302, adjusting the height, the left and right, the front and back of the anchor bolt positioning tool structure to a preset position according to measurement lofting;
And S303, after the adjustment is completed, fixing the connecting anchor bolt through a nut, and starting the template installation.
In order to solve the technical problems, the invention further provides the following technical scheme:
As a preferable scheme of the invention, the anchor bolt positioning tool structure arranged on the cast-in-situ bottom plate in the step S301 comprises a main frame body, a plurality of anchoring mechanisms and a plurality of fine adjustment mechanisms for adjusting and supporting the main frame body in the vertical, transverse and longitudinal directions, wherein the main frame body is detachably arranged at the top of the cast-in-situ bottom plate, the main frame body comprises two longitudinal beams and a plurality of cross beams, the two longitudinal beams are symmetrically arranged on the cast-in-situ bottom plate, the plurality of cross beams are uniformly arranged between the two longitudinal beams, two ends of all the cross beams are fixedly connected with the two longitudinal beams respectively, a plurality of positioning steel plates are uniformly arranged at the bottoms of the longitudinal beams along the length direction of the bottom of each longitudinal beam, the plurality of positioning steel plates are respectively connected with two ends of the bottoms of the plurality of the cross beams, the plurality of anchoring mechanisms are symmetrically arranged at the tops of the two longitudinal beams respectively, the two adjacent anchoring mechanisms on each longitudinal beam are respectively arranged between the two positioning steel plates, the fine adjustment mechanisms are symmetrically arranged at two opposite sides of the two longitudinal beams, and all the fine adjustment mechanisms are positioned between the two cross beams, and the two lifting lugs are arranged at two sides of the cross beams.
As a preferable scheme of the invention, anchor bolt connecting holes are formed in four corners of the inner wall of each positioning steel plate, connecting anchor bolts for positioning and connecting the prefabricated stand columns are connected in each anchor bolt connecting hole, the connecting anchor bolts connected to each positioning steel plate correspond to a plurality of groups of reserved holes, and two nuts are connected to each connecting anchor bolt in a threaded manner.
As a preferable scheme of the invention, column foot steel plates are arranged at the bottoms of all the prefabricated columns, and column positioning holes which are fixedly connected with all the connecting anchor bolts are formed at four corners of the bottoms of all the column foot steel plates.
As a preferable scheme of the invention, the structure of all the fine adjustment mechanisms is the same, each fine adjustment mechanism comprises a supporting base, a connecting plate, a height adjusting screw rod, a transverse adjusting moving assembly and a longitudinal adjusting moving assembly, the connecting plate is fixed on the side wall of the longitudinal beam, the height adjusting screw rod penetrates through the connecting plate and is in threaded connection with the connecting plate, the transverse adjusting moving assembly is arranged at the bottom end of the height adjusting screw rod, the longitudinal adjusting moving assembly is arranged at the bottom end of the transverse adjusting moving assembly, and the supporting base is arranged at the bottom of the longitudinal adjusting moving assembly.
As a preferable scheme of the invention, all the anchoring mechanisms have the same structure, and each anchoring mechanism comprises a screw rod and a locking nut, wherein the screw rod is in threaded connection with the longitudinal beam, and the locking nut is in threaded connection with the screw rod.
As a preferable scheme of the invention, all the longitudinal beams are provided with prism installation bases matched with the total station, each prism installation base is provided with a measuring prism, and the longitudinal centers of the prism installation bases and the positioning steel plates are positioned on the same axis.
As a preferable scheme of the invention, the cross sections of all the longitudinal beams are I-shaped, the interiors of the two longitudinal beams are fixedly connected with fixing columns, the fixing columns are respectively positioned at the central positions of the connecting points of all the longitudinal beams and the positioning steel plates, grouting holes are formed in the interiors of all the fixing columns, and the upper ends and the lower ends of the grouting holes respectively penetrate through the communicated longitudinal beams and the positioning steel plates.
Compared with the prior art, the invention has the following beneficial effects:
1. Compared with the prior art, the embedded connecting piece construction in the traditional engineering is low in precision, the geometric position acceptance standard for track gauge, horizontal, track direction, high and low and the like in track engineering acceptance is very high, the error is generally not more than 2mm, and the anchor bolt positioning tool structure provided by the invention can rapidly and accurately determine the coordinates, elevations and corners in batches, so that the requirement of track acceptance precision is met.
2. Compared with the prior art, the traditional track construction tool mostly adopts tools such as a track gauge rod, a screw rod and the like, has more parts and low precision, integrates the functions of hoisting, measuring, fine adjustment, anchoring and grouting, can finish a plurality of construction steps on one tool, has high integration level, simple structure and high reliability, improves the safety of construction, improves the construction work efficiency, reduces the labor intensity and saves the investment of constructors and the whole construction period.
3. The invention can realize forward construction from bottom to top by applying the embodiment, realizes dry construction without concrete operation in the subsequent prefabricated upright post installation process by accurately embedding the connecting pieces, has simple connection mode, obviously improves construction safety and convenience, and realizes assembly construction.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
Fig. 1 is a schematic perspective view of an assembled track structure according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a connection structure of a cast-in-situ floor and an anchor bolt positioning tooling structure according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an anchor bolt positioning tooling structure according to an embodiment of the present invention;
FIG. 4 is an enlarged view of the structure at A of FIG. 3 according to an embodiment of the present invention;
FIG. 5 is a schematic view of a connection structure of prefabricated columns and column base steel plates according to an embodiment of the present invention;
FIG. 6 is a front cross-sectional view of an anchor bolt positioning tooling structure according to an embodiment of the present invention;
fig. 7 is a schematic view illustrating a use state of an assembled track structure according to an embodiment of the present invention.
Reference numerals in the drawings are respectively as follows: 1. a main frame body; 101. a longitudinal beam; 102. a cross beam; 103. lifting lugs; 104. a prism mounting base; 105. fixing the column; 106. grouting holes; 2. a fine adjustment mechanism; 201. a connecting plate; 202. a height adjusting screw; 203. a lateral adjustment movement assembly; 204. longitudinally adjusting the moving assembly; 3. an anchoring mechanism; 301. a screw rod; 302. a lock nut; 4. positioning a steel plate; 401. anchor bolt connecting holes; 5. a track system; 6. prefabricating upright posts; 7. connecting anchor bolts; 8. a cast-in-place bottom plate; 10. column foot steel plate; 11. and (5) reserving holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 7, the present invention provides a construction method of an assembled track structure, comprising the steps of:
S100, checking pouring of a pit bottom plate after foundation construction under a civil engineering line is completed to form a cast-in-situ bottom plate 8, and pre-burying corrugated sleeves before pouring of concrete of the pit bottom plate to form two rows of reserved holes 11 on two sides of the top of the cast-in-situ bottom plate 8 after pouring, wherein each row of reserved holes 11 is divided into a plurality of groups, the number of each group is four, and the four reserved holes 11 are diagonally arranged;
s200, pouring bottom plate concrete after embedding the corrugated sleeve, reserving reinforcing steel bars for installing retaining walls subsequently on the cast-in-situ bottom plate 8, and retesting and checking the elevation of the cast-in-situ bottom plate 8, the positioning of the embedded corrugated sleeve, the existence of blockage and water accumulation on the inner wall of the corrugated sleeve after the civil engineering is completed;
S300, surrounding an upper template on the periphery of each group of reserved holes 11, placing connecting anchors 7 in each reserved hole 11, and positioning and adjusting the positions of all the connecting anchors 7;
s400, after the adjustment is finished, mixing cement-based grouting materials according to the material requirement, pouring slurry into the template, so that the slurry is filled into the template, flowing into all the reserved holes 11 from the template, and after the grouting is finished, removing the template after the slurry is filled and reaches the preset strength;
S500, after curing of grouting materials is completed, transporting the prefabricated upright post 6 to an installation site, hoisting the prefabricated upright post 6, accurately positioning the prefabricated upright post 6, connecting the prefabricated upright post 6 with the embedded connecting anchor bolts 7 in a matched mode, and then fixing the four connecting anchor bolts 7 on the prefabricated upright post 6 by adopting double nuts;
And S600, after the prefabricated upright post 6 is installed, the iron base plate of the fastener is installed and fixed on the top of the prefabricated upright post 6, the base plate is placed on the iron base plate, and the steel rail is installed on the iron base plate on the top of the prefabricated upright post 6 and the fastener is installed, so that the installation of the track system 5 is completed.
Specifically, in S300, the positioning and adjusting of the position and the height of the connecting anchor 7 specifically includes the following steps:
S301, hoisting the anchor bolt positioning tool structure manufactured in advance to a position at one end of an inspection pit for installing the prefabricated upright post 6, and connecting the anchor bolt positioning tool structure with a connecting anchor bolt 7;
S302, adjusting the height, the left and right, the front and back of the anchor bolt positioning tool structure to preset positions according to measurement lofting;
and S303, after the adjustment is completed, fixing the connecting anchor bolt 7 by a nut, and starting the template installation.
Example 2:
As shown in fig. 2-4 and 6, the construction method of the assembled track structure of the invention further comprises an anchor bolt positioning tool structure arranged on the cast-in-situ bottom plate 8 in the step S301, wherein the anchor bolt positioning tool structure comprises a main frame body 1, a plurality of anchor mechanisms 3 and a plurality of fine adjustment mechanisms 2 for vertically, transversely and longitudinally adjusting and supporting the main frame body 1, the main frame body 1 is detachably arranged on the top of the cast-in-situ bottom plate 8, the main frame body 1 comprises two longitudinal beams 101 and a plurality of cross beams 102, the two longitudinal beams 101 are symmetrically arranged on the cast-in-situ bottom plate 8, the plurality of cross beams 102 are uniformly arranged between the two longitudinal beams 101, two ends of all the cross beams 102 are fixedly connected with the two longitudinal beams 101 respectively, a plurality of positioning steel plates 4 are uniformly arranged at the bottom of each longitudinal beam 101 along the length direction of the anchor bolt positioning tool structure, the plurality of positioning steel plates 4 are respectively connected with two ends of the bottom of the plurality of the cross beams 102, the plurality of anchor mechanisms 3 are symmetrically arranged at the tops of the two longitudinal beams 101, the two adjacent anchor mechanisms 3 are respectively positioned between the two positioning steel plates 4, the fine adjustment mechanisms 2 are symmetrically arranged at the tops of the two longitudinal beams 101, the two fine adjustment mechanisms 103 are symmetrically arranged at two sides of the two opposite sides of the two fine adjustment mechanisms 102, and the two fine adjustment mechanisms 102 are respectively positioned between the two sides of the two opposite sides 102, and two fine adjustment mechanisms 102 are respectively arranged at two sides between two sides of two fine adjustment mechanisms 102. The moving position of the anchor bolt positioning tool structure is convenient.
The main frame body 1 comprises two longitudinal beams 101 which are parallel to each other and a plurality of cross beams 102 which are parallel to each other, the longitudinal beams 101 and the cross beams 102 are in a horizontal plane and are mutually perpendicular, and the connecting nodes of the longitudinal beams 101 and the cross beams 102 are welded in a factory, so that the main frame body 1 is guaranteed to be a stable space frame, the pre-installation position of the prefabricated upright post 6 can be positioned by utilizing the main frame body 1, the positioning steel plate 4 can be used for positioning and connecting the connecting anchor bolts 7 of the prefabricated upright post 6 and realizing accurate pre-embedding of the connecting anchor bolts 7, the fine adjustment mechanism 2 is used for adjusting and supporting the main frame body 1 in the vertical direction, the transverse direction and the longitudinal direction, the whole anchor bolt positioning tool structure is temporarily fixed after the fine adjustment is completed by matching with the anchoring mechanism 3, and the anchor bolt positioning tool structure is stable and difficult to be disturbed in the positioning process.
The invention is used for accurately positioning the prefabricated upright post 6, connecting the anchor bolts 7 and the installation foundation platform, can realize the accurate positioning before the installation of the prefabricated upright post 6, ensures that the prefabricated upright post 6 and the steel rail meet the relevant acceptance standards of the track after the installation, and reduces the weight as much as possible while meeting the positioning precision, so that the movement is more labor-saving in the actual use of the whole engineering, the working efficiency is higher, the manpower consumption is saved, the materials are saved, and the cost is reduced.
Anchor bolt connecting holes 401 are formed in four corners of the inner wall of all positioning steel plates 4, connecting anchor bolts 7 used for positioning and connecting prefabricated upright posts 6 are connected in all anchor bolt connecting holes 401, the connecting anchor bolts 7 connected to all positioning steel plates 4 correspond to the groups of reserved holes 11, and two nuts are connected to all the connecting anchor bolts 7 in a threaded mode.
All prefabricated stand 6 bottoms all are provided with column foot steel sheet 10, and all column foot steel sheet 10 bottom four corners department all has seted up and has been connected fixed stand locating hole with all connecting anchor bolts 7.
All the longitudinal beams 101 are provided with prism mounting bases 104 matched with the total station, each prism mounting base 104 is provided with a measuring prism, and the longitudinal centers of the prism mounting bases 104 and the positioning steel plate 4 are located on the same axis.
The positioning steel plate 4 is welded at the bottom of a connecting joint of the longitudinal beam 101 and the cross beam 102, and the connecting anchor bolt 7 is detachably connected with the positioning steel plate 4 through an anchor bolt connecting hole 401; the number of the positioning steel plates 4 of the anchor bolt positioning tool structure is distributed in pairs, and the positioning steel plates can be arranged in two pairs, three pairs and four pairs according to construction conditions, and as the connecting anchor bolts 7 are connected with the positioning steel plates 4, the positioning steel plates 4 are fixedly arranged at the bottom of the main frame body 1, the relative position relationship is fixed, and a measuring prism is arranged on a prism mounting base 104 on the main frame body 1, so that the mounting position of the connecting anchor bolts 7 can be accurately reflected.
Before installing the prefabricated upright posts 6, the invention needs to finish pouring of the cast-in-situ bottom plate 8, then four connecting anchors 7 are accurately pre-buried on the foundation position of the cast-in-situ bottom plate 8 for installing each prefabricated upright post 6, and pouring grouting materials to finish positioning of the prefabricated upright posts 6, therefore, when the anchor bolt positioning tool structure is used, firstly, a positioning steel plate 4 is connected with the connecting anchors 7 through anchor bolt connecting holes 401, each connecting anchor bolt 7 is fixed with the positioning steel plate 4 through upper and lower nuts, the lifting lug 103 on the main frame body 1 is connected through a rope by using a lifting tool, the anchor bolt positioning tool structure is moved to a rough position corresponding to the reserved holes 11 of the corresponding connecting anchor bolts 7 of the cast-in-situ bottom plate 8, then the connecting anchor bolts 7 are placed in the reserved holes 11 on the cast-in-situ bottom plate 8, and the diameters of the reserved holes 11 on the cast-in-situ bottom plate 8 are larger than the connecting anchor bolts 7, and the fine adjustment range of the anchor bolt positioning tool structure can be matched; before the connecting anchor bolts 7 are finely adjusted by the fine adjustment mechanism 2, the measuring prisms are installed on all prism installation bases 104, and the coordinates and the heights of the measuring prisms installed on the prism installation bases 104 on the main frame body 1 are measured by using total stations arranged in the measuring system, so that the offset required to be adjusted on the transverse, vertical and longitudinal directions of the connecting anchor bolts 7 can be accurately reflected. And then the position of the main frame body 1 is adjusted through the fine adjustment mechanism 2, so that the positions of a plurality of pairs of positioning steel plates 4 are adjusted, and the position adjustment of a plurality of pairs of connecting anchor bolts 7 corresponding to the positions is realized.
All fine tuning mechanism 2's structure is the same, fine tuning mechanism 2 includes supporting base, connecting plate 201, high adjusting screw 202, lateral adjustment remove the subassembly 203 and vertical adjustment remove the subassembly 204, and connecting plate 201 is fixed on longeron 101 lateral wall, and high adjusting screw 202 runs through connecting plate 201, and with connecting plate 201 threaded connection, lateral adjustment remove the subassembly 203 and install in high adjusting screw 202 bottom, vertical adjustment remove the subassembly 204 and install in lateral adjustment remove the subassembly 203 bottom, supporting base installs in vertical adjustment remove the subassembly 204 bottom.
The supporting base is used for supporting the whole fine adjustment mechanism 2 and the main frame body 1, and before fine adjustment, the main frame body 1 is placed on the cast-in-situ bottom plate 8, and when fine adjustment is performed, the height positions of all the fine adjustment mechanisms 2 can be adjusted by respectively adjusting the height adjusting screws 202 on the fine adjustment mechanisms 2, and as all the fine adjustment mechanisms 2 are connected with the main frame body 1, the height of the main frame body 1 can be synchronously adjusted, so that the adjustment of the vertical offset of all the connecting anchors 7 is realized; the transverse moving positions of the fine adjustment mechanisms 2 can be adjusted by adjusting the transverse adjusting moving assemblies 203 on all the fine adjustment mechanisms 2, and as all the fine adjustment mechanisms 2 are connected with the main frame body 1, the main frame body 1 can also move along with the transverse movement, so that the adjustment of the transverse offset of the connecting anchor bolts 7 is realized; the longitudinal movement of the fine adjustment mechanism 2 can be adjusted by adjusting the longitudinal movement of the fine adjustment mechanism 2, and the main frame 1 can move longitudinally along with the fine adjustment mechanism 2 because the fine adjustment mechanism 2 is connected with the main frame 1, so that the adjustment of the longitudinal offset of all the connecting anchors 7 arranged on the main frame 1 is realized.
When the four fine adjustment mechanisms 2 are utilized to adjust the height and the transverse position of the connecting anchor bolts 7 of the main frame body 1, the four operators synchronously rotate the height adjusting screws 202, the transverse adjusting moving assemblies 203 and the longitudinal adjusting moving assemblies 204 on the four fine adjustment mechanisms 2 clockwise or anticlockwise to adjust the positions of the main frame body 1 and all the connecting anchor bolts 7 on the main frame body 1 along the transverse direction, the vertical direction and the longitudinal direction, so that the adjustment of the offset of all the connecting anchor bolts 7 on the anchor bolt positioning tool structure in the transverse direction, the vertical direction and the longitudinal direction is realized, and the balance of the offset adjustment is ensured.
All the anchoring mechanisms 3 have the same structure, each anchoring mechanism 3 comprises a screw rod 301 and a locking nut 302, the screw rods 301 are in threaded connection with the longitudinal beams 101, and the locking nuts 302 are in threaded connection with the screw rods 301.
When the positions of the main frame body 1 and the connecting anchor bolts 7 are accurately adjusted, the anchoring mechanism 3 is correspondingly drilled under the cast-in-situ bottom plate 8 by using an electric drill, then the screw rod 301 on the anchoring mechanism 3 is rotated, the bottom of the anchoring mechanism 3 is screwed into the drilled hole, and the temporary anchoring of the anchor bolt positioning tool structure is completed through the enlarged head at the top of the anchoring mechanism 3.
The cross-sectional shapes of all longitudinal beams 101 are I-shaped, fixing columns 105 are fixedly connected inside the two longitudinal beams 101, the fixing columns 105 are respectively located at the central positions of connecting points of all the longitudinal beams 101 and the positioning steel plate 4, grouting holes 106 are respectively formed in all the fixing columns 105, and the upper end and the lower end of each grouting hole 106 penetrate through the corresponding longitudinal beam 101 and the corresponding positioning steel plate 4.
After the main frame body 1 and the positions of all the connecting anchors 7 are positioned and temporarily fixed, gaps between all the positioning steel plates 4 and the cast-in-situ bottom plate 8 are surrounded by the templates, grouting materials are injected into grouting holes 106 in the middle of the positioning steel plates 4, the grouting materials enter the space surrounded by the templates on the cast-in-situ bottom plate 8 through the grouting holes 106 and are shunted into reserved holes 11 around the grouting materials, the reserved holes 11 of the connecting anchors 7 on the cast-in-situ bottom plate 8 and gaps at the lower parts of the positioning steel plates 4 are filled, after the grouting materials reach the strength, reliable connection of the connecting anchors 7 and the cast-in-situ bottom plate 8 can be realized, meanwhile, the top surfaces of the grouting materials can form upright column supporting surfaces, nuts above anchor bolt connecting holes 401 in the positioning steel plates 4 for temporarily fixing the connecting anchors 7 are removed, and the movable anchor bolt positioning tool structure can be detached and moved to other construction of other sections of a line.
After the accurate positioning and pre-embedding operation of all the connecting anchors 7 are completed, the installation of the prefabricated upright post 6 can be carried out, the installation work of the prefabricated upright post 6 can be completed by connecting and fixing four anchor bolt connecting holes 401 on a column foot steel plate 10 at the bottom of the prefabricated upright post 6 with connecting anchors 7 on a cast-in-situ bottom plate 8 through nuts after one-to-one correspondence; the flow operation is convenient, and the safety and convenience and the work efficiency of construction are improved; two ground beams of the traditional inspection pit are canceled, the depth of a ditch is reduced, the masonry quantity is reduced, and the manufacturing cost is saved; and adopt exquisite interim support, can be convenient carry out quick accurate adjustment to connecting crab-bolt 7, solve the difficult problem of pre-buried basic precision control.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements of this application will occur to those skilled in the art, and are intended to be within the spirit and scope of the application.
Claims (7)
1. The construction method of the assembled track structure is characterized by comprising the following steps of:
s100, checking pouring of a pit bottom plate after foundation construction under a civil engineering line is completed to form a cast-in-situ bottom plate (8), and pre-burying corrugated sleeves before pouring of concrete of the pit bottom plate to reserve two rows of reserved holes (11) on two sides of the top of the cast-in-situ bottom plate (8) after pouring, wherein each row of reserved holes (11) is divided into a plurality of groups, the number of each group is four, and the four reserved holes (11) are diagonally arranged;
s200, pouring bottom plate concrete after embedding the corrugated sleeve, reserving reinforcing steel bars for installing a retaining wall later on the cast-in-situ bottom plate (8), and retesting and checking the elevation of the cast-in-situ bottom plate (8), the positioning of the embedded corrugated sleeve, the existence of blockage and water accumulation on the inner wall of the corrugated sleeve after the civil engineering is completed;
S300, surrounding an upper template on the periphery of each group of reserved holes (11), placing connecting anchors (7) in each reserved hole (11), and adjusting the positions and the positions of all the connecting anchors (7);
in S300, the positioning and adjusting of the position and the height of the connecting anchor bolt (7) specifically comprises the following steps:
S301, hoisting the anchor bolt positioning tool structure manufactured in advance to a position at one end of an inspection pit for installing a prefabricated upright post (6), and connecting the anchor bolt positioning tool structure with a connecting anchor bolt (7);
S302, adjusting the height, the left and right, the front and back of the anchor bolt positioning tool structure to preset positions according to measurement lofting;
S303, after adjustment is completed, fixing the connecting anchor bolt (7) through a nut, and starting template installation;
The anchor bolt positioning tool structure comprises a main frame body (1), a plurality of anchoring mechanisms (3) and a plurality of fine adjusting mechanisms (2) for adjusting and supporting the main frame body (1) in the vertical, horizontal and longitudinal directions, wherein the main frame body (1) is detachably arranged at the top of the cast-in-situ bottom plate (8), the main frame body (1) comprises two longitudinal beams (101) and a plurality of cross beams (102), the two longitudinal beams (101) are symmetrically arranged on the cast-in-situ bottom plate (8), the cross beams (102) are uniformly arranged between the two longitudinal beams (101), two ends of all the cross beams (102) are fixedly connected with the two longitudinal beams (101) respectively, a plurality of positioning steel plates (4) are uniformly arranged at the bottom of each longitudinal beam (101) along the length direction, the plurality of positioning steel plates (4) are respectively connected with two ends of the bottom of the cross beams (102), the plurality of anchoring mechanisms (3) are symmetrically arranged at the tops of the two longitudinal beams (101) in pairs, the two anchoring mechanisms (101) are symmetrically arranged between the two fine adjusting mechanisms (2) respectively, two adjacent to each positioning steel plate (101) are positioned between two fine adjusting mechanisms (2), lifting lugs (103) are arranged on two sides of the top of each beam (102);
All the fine adjustment mechanisms (2) have the same structure, each fine adjustment mechanism (2) comprises a supporting base, a connecting plate (201), a height adjusting screw (202), a transverse adjusting moving assembly (203) and a longitudinal adjusting moving assembly (204), the connecting plate (201) is fixed on the side wall of the longitudinal beam (101), the height adjusting screw (202) penetrates through the connecting plate (201) and is in threaded connection with the connecting plate (201), the transverse adjusting moving assembly (203) is arranged at the bottom end of the height adjusting screw (202), the longitudinal adjusting moving assembly (204) is arranged at the bottom end of the transverse adjusting moving assembly (203), and the supporting base is arranged at the bottom of the longitudinal adjusting moving assembly (204);
S400, after the adjustment is finished, mixing cement-based grouting materials according to the material requirement, pouring slurry into the template, so that the slurry is filled into the template, flowing into all the reserved holes (11) from the template, and after the grouting is finished, removing the template after the slurry is filled and reaches the preset strength;
S500, after curing of grouting materials is completed, conveying the prefabricated upright post (6) to an installation site, hoisting the prefabricated upright post (6), accurately positioning the prefabricated upright post (6) and connecting the prefabricated upright post with the embedded connecting anchor bolts (7) in a matched mode, and then fixing the four connecting anchor bolts (7) on the prefabricated upright post (6) by adopting double nuts;
And S600, after the prefabricated upright (6) is installed, the iron base plate of the fastener is installed and fixed on the top of the prefabricated upright (6), the base plate is placed on the iron base plate, and the steel rail is installed on the iron base plate on the top of the prefabricated upright (6) and the fastener is installed, so that the installation of the track system (5) is completed.
2. The method for constructing a fabricated track structure according to claim 1, wherein: all the inner wall four corners department of location steel sheet (4) has all offered crab-bolt connecting hole (401), all be connected with in crab-bolt connecting hole (401) and be used for location and connect connecting crab-bolt (7) of prefabricated stand (6), just all connecting crab-bolt (7) that are connected on location steel sheet (4) all correspond with multiunit preformed hole (11), all equal threaded connection has two nuts on connecting crab-bolt (7).
3. The method for constructing a fabricated track structure according to claim 1, wherein: all prefabricated stand (6) bottom all is provided with column foot steel sheet (10), all column foot steel sheet (10) bottom four corners department all has seted up and has been connected fixed stand locating hole with all connecting anchor bolts (7).
4. The method for constructing a fabricated track structure according to claim 1, wherein: all the anchoring mechanisms (3) are identical in structure, each anchoring mechanism (3) comprises a screw rod (301) and a locking nut (302), each screw rod (301) is connected to the longitudinal beam (101) in a threaded mode, and each locking nut (302) is connected to each screw rod (301) in a threaded mode.
5. The method for constructing a fabricated track structure according to claim 1, wherein: all be provided with on longeron (101) with total powerstation assorted prism installation base (104), every can install measurement prism on prism installation base (104), just the longitudinal center of prism installation base (104) and location steel sheet (4) is located the same axis.
6. The method for constructing a fabricated track structure according to claim 1, wherein: all the cross-sectional shapes of the longitudinal beams (101) are I-shaped, two fixing columns (105) are fixedly connected inside the longitudinal beams (101), the fixing columns (105) are respectively located at the central positions of connecting points of all the longitudinal beams (101) and the positioning steel plates (4), grouting holes (106) are respectively formed in all the fixing columns (105), and the upper ends and the lower ends of the grouting holes (106) penetrate through the communicated longitudinal beams (101) and the positioning steel plates (4) respectively.
7. A fabricated track structure obtained by the construction method of any one of claims 1-6.
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| CN121295811A (en) * | 2025-12-10 | 2026-01-09 | 山东省住房和城乡建设发展研究院 | A prefabricated foundation for multi-story intelligent modular prefabricated housing construction |
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| CN219864319U (en) * | 2023-03-30 | 2023-10-20 | 中国铁路设计集团有限公司 | Prefabricated hollow square column type inspection pit capable of being forward-constructed and bolted to column base |
| CN117005729A (en) * | 2023-07-11 | 2023-11-07 | 中国铁路设计集团有限公司 | A prefabricated prefabricated column inspection pit structure and construction method capable of forward construction |
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| JP5065341B2 (en) * | 2009-06-17 | 2012-10-31 | 東急建設株式会社 | Precast pillar and foundation connection method and temporary cradle. |
| CN110512922B (en) * | 2019-09-12 | 2025-01-28 | 中铁第四勘察设计院集团有限公司 | Assembled maintenance column, train maintenance platform and construction method thereof |
| CN112240111B (en) * | 2020-06-11 | 2025-05-30 | 中铁第四勘察设计院集团有限公司 | A subway prefabricated column-type inspection pit structure and construction method |
| CN213953148U (en) * | 2020-10-29 | 2021-08-13 | 中亿丰建设集团股份有限公司 | Column type inspection pit precast concrete track column |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN219864319U (en) * | 2023-03-30 | 2023-10-20 | 中国铁路设计集团有限公司 | Prefabricated hollow square column type inspection pit capable of being forward-constructed and bolted to column base |
| CN117005729A (en) * | 2023-07-11 | 2023-11-07 | 中国铁路设计集团有限公司 | A prefabricated prefabricated column inspection pit structure and construction method capable of forward construction |
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