CN112593490B - Counter-force support structure for longitudinal dragging construction of steel beam and application method of counter-force support structure - Google Patents
Counter-force support structure for longitudinal dragging construction of steel beam and application method of counter-force support structure Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 271
- 239000010959 steel Substances 0.000 title claims abstract description 271
- 238000010276 construction Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000009826 distribution Methods 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 21
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 230000008569 process Effects 0.000 abstract description 14
- 230000005540 biological transmission Effects 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 10
- 238000005452 bending Methods 0.000 description 5
- 239000003351 stiffener Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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- 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
- E01D21/06—Methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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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
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/30—Metal
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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Abstract
The application relates to a counter-force supporting structure for longitudinal dragging construction of a steel beam and a using method thereof, relating to the technical field of bridge dragging construction, wherein the counter-force supporting structure comprises: a base platform; the steel pipe supports are arranged on the top surface of the foundation bearing platform in pairs; the slideway beam is arranged on the top surface of the steel pipe bracket; the dragging system is arranged on one side of the top surface of the slideway beam and is used for dragging the steel beam to be replaced on the top surface of the slideway beam; wherein, the foundation cap is a driving-in type steel pipe pile foundation structure; the steel pipe support comprises a vertical upright post structure and an inclined upright post structure. The steel pipe pile foundation and the bearing platform are combined into a whole, the traditional drilling cast-in-place pile foundation is replaced, and the method has the advantages of being simple in construction process and clear in force transmission path.
Description
Technical Field
The application relates to the technical field of bridge dragging construction, in particular to a counter-force support structure for longitudinal dragging construction of a steel beam and a using method of the counter-force support structure.
Background
In the existing line railway bridge, especially a bridge with long service life, a military truss girder structure with low equipment requirement is usually adopted due to the limitations of the bridge construction technology and equipment which are backward before.
The steel truss railway bridge adopting the military truss structure often has the problems of serious insufficient transverse rigidity of a main truss, overlarge transverse amplitude and insufficient bearing capacity when a train passes through. And because of the overload operation, the defects of upper cross crack, high-strength bolt breakage, dead deflection formed by the main truss and the like exist.
In order to meet the requirements of modern railway operation and ensure operation safety, the existing bridge needs to be subjected to beam replacement and transformation engineering, but in the traditional dragging structure in the beam replacement engineering, a set of dragging equipment is arranged on each pier-side slideway, and steel beams are synchronously dragged at multiple points in a grading manner in the integral dragging process. The method needs more dragging equipment, and the travel of the dragging equipment on each pier-side slideway is difficult to maintain when the steel beam is dragged.
Therefore, a counterforce support structure with a simple structure and definite force transmission needs to be provided to meet the requirement of steel beam dragging.
Disclosure of Invention
The application provides a counter-force support structure for steel beam longitudinal dragging construction and a using method thereof, adopts a form that a steel pipe pile foundation and a bearing platform are combined into a whole, replaces a traditional drilling cast-in-place pile foundation, and has the advantages of simple construction process and clear force transmission path.
In a first aspect, the present application provides a counter force brace structure for a steel beam longitudinal towing construction, the counter force brace structure comprising:
a base platform;
the steel pipe supports are arranged on the top surface of the foundation bearing platform in pairs;
the slideway beam is arranged on the top surface of the steel pipe support;
the dragging system is arranged on one side of the top surface of the slideway beam and is used for dragging the steel beam to be replaced on the top surface of the slideway beam; wherein,
the foundation bearing platform is a driving-in type steel pipe pile foundation structure;
the steel pipe support comprises a vertical upright post structure and an inclined upright post structure.
Specifically, the basic cushion cap includes:
a bearing platform structure;
a plurality of steel pipe piles arranged on the bottom surface of the bearing platform structure;
and the plurality of reinforcing steel bars are arranged at the top end of each steel pipe pile and embedded in the bottom surface of the bearing platform structure.
Specifically, the steel pipe support includes a plurality of steel pipe sub-supports that set up in pairs, each steel pipe support includes:
a pair of lateral transverse bridge distribution beams arranged side by side on the top surface of the foundation bearing platform;
a middle transverse distribution beam arranged between the pair of lateral transverse distribution beams in parallel;
the longitudinal axial distribution beam is positioned below the middle transverse axial distribution beam;
the vertical steel pipe upright columns are positioned between the bottom surfaces of the lateral transverse bridge distribution beams and the top surface of the foundation bearing platform;
the pair of inclined steel pipe upright columns are positioned between the bottom surfaces of the longitudinal bridge distribution beams and the top surface of the foundation bearing platform;
a plurality of connection systems;
the embedded parts are arranged at the bottom ends of the vertical steel pipe stand columns and the inclined steel pipe stand columns; wherein,
the bottom end of the vertical steel pipe upright post is connected with the top surface of the foundation bearing platform through the embedded part;
one end of each inclined steel pipe upright post is inserted into the bottom surface of the longitudinal bridge directional distribution beam, the other end of each inclined steel pipe upright post is connected with the top surface of the foundation bearing platform through the embedded part, and the inclined steel pipe upright posts and the top surface of the foundation bearing platform are configured into a first triangular structure;
the vertical steel pipe upright post is connected with the first triangular structure through the connecting system.
Preferably, said steel pipe supports are arranged side by side.
Specifically, the steel pipe support comprises a plurality of steel pipe sub-supports which are arranged in pairs and side by side;
the bottom surface of the bearing platform structure is correspondingly provided with a plurality of steel pipe piles corresponding to the area of each steel pipe support, and the length direction of each steel pipe support corresponds to the arrangement direction of the corresponding steel pipe piles.
Specifically, the slideway beam comprises two I-shaped steels arranged side by side;
and a first stiffening plate is arranged between the upper flange and the lower flange of each I-shaped steel according to a preset distance.
Specifically, at least one second stiffening plate is arranged between the upper flange and the lower flange of the I-steel and between every two adjacent first stiffening plates.
Specifically, the traction system comprises a counter-force seat, a continuous jack, a steel strand and a steel beam anchor seat device which are connected in sequence.
Preferably, the reaction seat is welded by steel plates to form a box-shaped section structure;
the web of the reaction seat is aligned with the web of the skid beam.
In a second aspect, the application provides a use method of a counter force bracket structure for steel beam longitudinal traction construction, which is based on the counter force bracket structure for steel beam longitudinal traction construction provided in the first aspect, and the use method comprises the following steps:
arranging a basic bearing platform in a preset area;
the top surface of the foundation bearing platform is provided with a plurality of paired steel pipe brackets;
arranging a slideway beam on the top surface of the steel pipe support;
a dragging system is arranged on one side of the top surface of the slideway beam;
dragging the steel beam to be replaced by using the dragging system to perform beam replacement work; wherein,
the foundation bearing platform is a driving-in type steel pipe pile foundation structure;
the steel pipe support comprises a vertical upright post structure and an inclined upright post structure.
The beneficial effect that technical scheme that this application provided brought includes:
1. the method adopts a form that the steel pipe pile foundation and the bearing platform are combined into a whole to replace the traditional drilling cast-in-place pile foundation, and has the advantages of simple construction process, high construction speed, clear force transmission path and better economical efficiency.
2. The steel pipe support of this application adopts the form that vertical stand and slope stand combined together, and the horizontal force that produces is dragged by the girder steel that offsets of slope stand ability great degree compares in the traditional method that adopts vertical stand entirely, and not only the atress is clear and definite, the row number of the vertical stand of reduction that more can great degree to reduce engineering cost.
3. The utility model provides a slide roof beam is formed by two I-steel welding, and every interval is strengthened with the stiffening plate between upper and lower edge of a wing, compares in traditional steel sheet welding box slide roof beam with, and the roughness is guaranteed more easily to the I-steel roof, guarantees the construction continuity of girder steel dragging in-process.
4. The dragging system is arranged on the top of the slideway beam, single-point dragging is used for replacing synchronous graded dragging, the continuous jack is used for replacing a traditional winch, and the continuity and the displacement synchronism of steel beam dragging construction can be achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a counterforce support structure for longitudinal traction construction of a steel beam according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a foundation cap of a reaction force bracket structure for longitudinal steel beam pulling construction according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a steel pipe pile and reinforcing steel bars of a reaction force bracket structure for longitudinal steel beam pulling construction according to an embodiment of the present disclosure;
fig. 4 is a schematic structural view of a foundation cap, a steel pipe bracket and a slideway beam of a reaction bracket structure for longitudinal steel beam dragging construction according to an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a steel pipe bracket of a counterforce bracket structure for longitudinal traction construction of a steel beam according to an embodiment of the present application;
FIG. 6 is a schematic structural view of a slideway beam of a reaction force bracket structure for longitudinal steel beam dragging construction according to an embodiment of the present invention;
fig. 7 is a schematic structural view of an i-steel and a first stiffening plate of a counterforce support structure for longitudinal traction construction of a steel beam according to an embodiment of the present application;
fig. 8 is a schematic structural view of an i-steel and a second stiffening plate of a counterforce support structure for longitudinal traction construction of a steel beam according to an embodiment of the present application;
FIG. 9 is a schematic diagram of a pulling system of the reaction bracket structure for longitudinal pulling construction of a steel beam according to an embodiment of the present invention;
the labels in the figure are:
1. a base platform; 10. a bearing platform structure; 11. steel pipe piles; 12. reinforcing steel bars; 2. a steel pipe bracket; 20. a steel pipe sub-bracket; 21. a lateral transverse bridge distribution beam; 22. a middle transverse bridge directional distribution beam; 23. a longitudinal bridge distribution beam; 24. vertical steel tube columns; 25. inclining the steel pipe upright post; 26. a connecting system; 27. embedding parts; 3. a slideway beam; 30. i-shaped steel; 31. a first stiffener plate; 32. a second stiffener plate; 4. a tractor system; 40. a counter-force seat; 41. a continuous jack; 42. steel strand wires; 43. girder steel anchorage device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a counter-force support structure for longitudinal dragging construction of a steel beam and a using method thereof, a steel pipe pile foundation and a bearing platform are combined into a whole to replace a traditional bored pile foundation, and the counter-force support structure is simple in construction process, high in construction speed, clear in force transmission path and good in economical efficiency.
In order to achieve the technical effects, the general idea of the application is as follows:
a reaction bracket structure for use in steel beam longitudinal towing construction, the reaction bracket structure comprising:
a base platform 1;
a plurality of steel pipe brackets 2 which are arranged on the top surface of the foundation bearing platform 1 in pairs;
the slideway beam 3 is arranged on the top surface of the steel pipe bracket 2;
the dragging system 4 is arranged on one side of the top surface of the slideway beam 3, and the dragging system 4 is used for dragging the steel beam to be replaced on the top surface of the slideway beam 3; wherein,
the foundation bearing platform 1 is a driving-in type steel pipe pile foundation structure;
the steel pipe support 2 comprises a vertical upright column structure and an inclined upright column structure.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
Example one
Referring to fig. 1 to 9, the present application provides a counterforce support structure for longitudinal steel beam dragging construction, including:
a base platform 1;
a plurality of steel pipe brackets 2 arranged on the top surface of the foundation bearing platform 1 in pairs;
the slideway beam 3 is arranged on the top surface of the steel pipe bracket 2;
the dragging system 4 is arranged on one side of the top surface of the slideway beam 3, and the dragging system 4 is used for dragging the steel beam to be replaced on the top surface of the slideway beam 3; wherein,
the foundation bearing platform 1 is a driving-in type steel pipe pile foundation structure;
the steel pipe support 2 comprises a vertical upright column structure and an inclined upright column structure.
In the embodiment of the application, the steel pipe pile foundation and the bearing platform are combined into a whole to replace the traditional drilling cast-in-place pile foundation, and the construction method is simple in construction process, high in construction speed, clear in force transmission path and good in economical efficiency.
It should be noted that the steel pipe support of the embodiment of the application adopts the form that vertical columns and inclined columns are combined, and the inclined columns can offset the horizontal force generated by dragging of steel beams to a large extent.
Specifically, the foundation cap 1 includes:
a platform structure 10;
a plurality of steel pipe piles 11 provided on the bottom surface of the bearing platform structure 10;
and a plurality of reinforcing steel bars 12 provided at the top ends of the steel pipe piles 11 and embedded in the bottom surface of the platform structure 10.
The foundation bearing platform 1 adopts a driven steel pipe pile foundation, and compared with the traditional bored pile foundation, the construction process is simple, the construction speed is high, and the economy is better;
the bearing platform structure 10 is composed of steel bars and concrete, and the bearing platform structure 10 is stepped along the longitudinal bridge direction to adapt to terrain change;
in order to better resist bending moment generated by dragging of steel beams, the top end of the steel pipe pile 11 needs to be inserted into the bearing platform structure 10, reinforcing steel bars are arranged along the inner wall of the steel pipe pile 11 and then poured with the bearing platform structure 10 together, the combination mode has good integrity, the bearing platform structure 10 is buried in the soil, a part of horizontal force can be resisted by means of active soil pressure of a soil body on the bearing platform structure 10, and compared with a traditional construction method of resisting the horizontal force and the bending moment by means of the steel pipe pile 11, the steel pipe pile bearing platform has the advantages of being clear in force transmission path, safe, reliable, low in manufacturing cost and rapid in construction.
Specifically, the steel pipe support 2 includes a plurality of steel pipe sub-supports 20 that set up in pairs, and each steel pipe sub-support 20 includes:
a pair of lateral transverse bridge distribution beams 21 arranged side by side on the top surface of the foundation cap 1;
a middle transverse direction distribution beam 22 arranged side by side between the pair of lateral transverse direction distribution beams 21;
a longitudinal distribution beam 23 located below the middle transverse distribution beam 22;
the vertical steel pipe upright columns 24 are positioned between the bottom surfaces of the lateral transverse bridge direction distribution beams 21 and the top surface of the foundation bearing platform 1;
a pair of inclined steel pipe columns 25 positioned between the bottom surfaces of the longitudinal distribution beams 23 and the top surface of the foundation bearing platform 1;
a plurality of connecting systems 26;
embedded parts 27 arranged at the bottom ends of the vertical steel pipe columns 24 and the inclined steel pipe columns 25; wherein,
the bottom end of the vertical steel pipe upright column 24 is connected with the top surface of the foundation bearing platform 1 through an embedded part 27;
one end of each inclined steel pipe upright post 25 is inserted into the bottom surface of the longitudinal axle distribution beam 23, the other end of each inclined steel pipe upright post is connected with the top surface of the foundation bearing platform 1 through an embedded part 27, and the inclined steel pipe upright posts 25 and the top surface of the foundation bearing platform 1 are configured into a first triangular structure;
the vertical steel tube column 24 is connected with the first triangular structure through a connecting system 26.
Preferably, the steel pipe sub-frames 20 are arranged side by side.
Specifically, the steel pipe support 2 comprises a plurality of steel pipe sub-supports 20 which are arranged in pairs and side by side;
the bottom surface of the bearing platform structure 10 is correspondingly provided with a plurality of steel pipe piles 11 in the areas corresponding to the steel pipe sub-supports 20, and the length direction of each steel pipe sub-support 20 corresponds to the arrangement direction of the corresponding plurality of steel pipe piles 11.
It should be noted that the steel pipe support 2 includes a plurality of steel pipe sub-supports 20 arranged in pairs, and each steel pipe sub-support 20 may be composed of an i-shaped distribution beam, a steel pipe column, a connection system and an embedded part;
the I-shaped distribution beam comprises a lateral transverse distribution beam 21, a middle transverse distribution beam 22 and a longitudinal distribution beam 23, and is used for transmitting acting force and bending moment applied to the slideway beam when the steel beam is dragged through the I-shaped distribution beam;
the steel pipe upright columns are divided into two types, namely a vertical steel pipe upright column 24 and an inclined steel pipe upright column 25, the inclined steel pipe upright column 25 can offset horizontal force generated by dragging of a steel beam to a large extent, and compared with the traditional method that the steel pipe upright columns are all adopted, the method has the advantages that stress is clear, the row number of the upright columns can be reduced to a large extent, and accordingly engineering cost is reduced;
the plurality of connecting systems 26 are arranged among the steel pipe stand columns and used for connecting the steel pipe stand columns into a whole and ensuring that the steel pipe support has enough rigidity and stability;
the embedded part 27 is disposed at the bottom of the steel pipe column and embedded in the bearing platform, so that the acting force and bending moment applied to the steel pipe support 20 in the steel pipe support 2 can be transmitted to the foundation bearing platform 1.
Specifically, the slideway beam 3 comprises two I-shaped steels 30 arranged side by side;
Further, at least one second stiffening plate 32 is arranged between the upper flange and the lower flange of the i-steel 30 and between every two adjacent first stiffening plates 31.
The slideway beam 3 is arranged on an I-shaped distribution beam of the steel pipe support 2, the slideway beam 3 is formed by welding I-shaped steels 30, the specific welding mode is that the upper flanges and the lower flanges of the two I-shaped steels 30 are connected by adopting groove butt welding, the upper flanges and the lower flanges are reinforced by first stiffening plates 31 and first stiffening plates 31 at intervals, and compared with the traditional box-shaped slideway beam formed by welding steel plates, the flatness of an I-shaped steel top plate is easier to guarantee, and the construction continuity in the steel beam dragging process is guaranteed.
In particular, the traction system 4 comprises a counterforce seat 40, a continuous jack 41, a steel strand 42 and a steel beam anchorage device 43 connected in sequence.
Specifically, the reaction seat 40 is welded by steel plates to form a box-shaped section structure;
the web of the reaction socket 40 is aligned with the web of the runner beam 3.
Wherein, the traction system 4 consists of a reaction force seat 40, a continuous jack 41, a steel strand 42 and a steel beam anchor seat device 43;
the counter-force seat 40 is arranged on the slideway beam 3 and is used for transmitting the horizontal force generated by dragging the steel beam to the steel pipe bracket 2;
the continuous jack 41 is a construction device for providing continuous and stable power in the steel beam dragging construction process;
the steel beam anchorage device 43 is arranged on the steel beam, and the steel stranded wire 42 is used for connecting the continuous jack 41 and the steel beam anchorage device 43;
the dragging system 4 replaces synchronous graded dragging with single-point dragging, and replaces a traditional winch with the continuous jack 41, so that the continuity and the displacement synchronism of steel beam dragging construction can be realized.
Example two
The embodiment of the application provides a construction method of a counter force support structure for longitudinal steel beam dragging construction, and the using method is based on the counter force support structure for longitudinal steel beam dragging construction and the using method thereof mentioned in the first embodiment, and the method comprises the following steps:
s1, arranging a basic bearing platform 1 in a preset area;
s2, a plurality of steel pipe brackets 2 in pairs are arranged on the top surface of the foundation bearing platform 1;
s3, arranging a slide way beam 3 on the top surface of the steel pipe bracket 2;
s4, arranging a dragging system 4 on one side of the top surface of the slideway beam 3;
s5, dragging the steel beam to be replaced by the dragging system 4 to perform beam replacement work; wherein,
the foundation bearing platform 1 is a driving-in type steel pipe pile foundation structure;
the steel pipe support 2 comprises a vertical upright column structure and an inclined upright column structure.
In the embodiment of the application, the steel pipe pile foundation and the bearing platform are combined into a whole to replace the traditional drilling cast-in-place pile foundation, and the construction method is simple in construction process, high in construction speed, clear in force transmission path and good in economical efficiency.
It should be noted that the steel pipe support of the embodiment of the application adopts the form that vertical columns and inclined columns are combined, and the inclined columns can offset the horizontal force generated by dragging of steel beams to a large extent.
Specifically, the foundation cap 1 includes:
a platform structure 10;
a plurality of steel pipe piles 11 provided on the bottom surface of the bearing platform structure 10;
and a plurality of reinforcing steel bars 12 provided at the top ends of the steel pipe piles 11 and embedded in the bottom surface of the platform structure 10.
In step S1, the steel pipe pile 11 is driven to a designed elevation by using a driving device, and when the steel pipe pile is driven in situ, the penetration depth should be mainly used and the penetration control should be assisted;
the top end of the steel pipe pile 11 needs to be inserted into the bearing platform structure 10, reinforcing steel bars 12 are arranged along the inner wall of the steel pipe pile 11, the reinforcing steel bars 12 need to be bound with the steel pipe pile 11, and finally concrete is poured together.
Specifically, the steel pipe support 2 includes a plurality of steel pipe sub-supports 20 that set up in pairs, and each steel pipe sub-support 20 includes:
a pair of lateral transverse bridge distribution beams 21 arranged side by side on the top surface of the foundation cap 1;
a middle transverse direction distribution beam 22 arranged side by side between the pair of lateral transverse direction distribution beams 21;
a longitudinal distribution beam 23 located below the middle transverse distribution beam 22;
the vertical steel pipe upright columns 24 are positioned between the bottom surfaces of the lateral transverse bridge direction distribution beams 21 and the top surface of the foundation bearing platform 1;
a pair of inclined steel pipe columns 25 positioned between the bottom surfaces of the longitudinal distribution beams 23 and the top surface of the foundation bearing platform 1;
a plurality of connecting systems 26;
embedded parts 27 arranged at the bottom ends of the vertical steel pipe columns 24 and the inclined steel pipe columns 25; wherein,
the bottom end of the vertical steel pipe upright column 24 is connected with the top surface of the foundation bearing platform 1 through an embedded part 27;
one end of each inclined steel pipe upright post 25 is inserted into the bottom surface of the longitudinal axle distribution beam 23, the other end of each inclined steel pipe upright post is connected with the top surface of the foundation bearing platform 1 through an embedded part 27, and the inclined steel pipe upright posts 25 and the top surface of the foundation bearing platform 1 are configured into a first triangular structure;
the vertical steel tube column 24 is connected with the first triangular structure through a connecting system 26.
Preferably, the steel pipe sub-frames 20 are arranged side by side.
Specifically, the steel pipe support 2 comprises a plurality of steel pipe sub-supports 20 which are arranged in pairs and side by side;
the bottom surface of the bearing platform structure 10 is correspondingly provided with a plurality of steel pipe piles 11 in the areas corresponding to the steel pipe sub-supports 20, and the length direction of each steel pipe sub-support 20 corresponds to the arrangement direction of the corresponding plurality of steel pipe piles 11.
In step S2, one end of the inclined steel pipe column 25 is inserted into the longitudinal distribution beam 23, and the other end is connected to the embedded part 27, so as to form a stable triangular system, i.e. a first triangular structure;
the vertical steel pipe upright posts 24 are connected with the triangular system by a connecting system 26, so that the steel pipe support 2 has enough rigidity and stability;
the embedded parts 27 are disposed at the bottoms of the inclined steel pipe columns 25 and the vertical steel pipe columns 24 and embedded in the bearing platform structure 10, so that the acting force and the bending moment borne by the steel pipe brackets 2 can be transmitted to the bearing platform structure 10.
Specifically, the slideway beam 3 comprises two I-shaped steels 30 arranged side by side;
Further, at least one second stiffening plate 32 is arranged between the upper flange and the lower flange of the i-steel 30 and between every two adjacent first stiffening plates 31.
In step S3, the upper and lower flanges of the two i-beams 30 are connected by groove butt welds, and the upper and lower flanges are reinforced by the first stiffening plates 31 at intervals to enhance the rigidity and stability of the two i-beams, and in order to meet the structural requirements, the second stiffening plates 32 are further required to be arranged between the first stiffening plates 31;
compare in traditional with the steel sheet welding one-tenth box slide roof beam, the roughness is guaranteed more easily to the I-steel roof, ensures the construction continuity of girder steel dragging in-process.
Note that the length of the first stiffener plates 31 is longer than the length of the second stiffener plates 32.
In particular, the traction system 4 comprises a counterforce seat 40, a continuous jack 41, a steel strand 42 and a steel beam anchorage device 43 connected in sequence.
Specifically, the reaction seat 40 is welded by steel plates to form a box-shaped section structure;
the web of the reaction socket 40 is aligned with the web of the runner beam 3.
In step S4, the members of the reaction force seat 40 are connected by groove butt welding, the web plate of the reaction force seat needs to be aligned with the web plate of the slide beam 3, and the stiffening plate of the reaction force seat 40 needs to be aligned with the long stiffening plate of the slide beam 3, that is, aligned with the first stiffening plate 31;
the continuous jack 41 is a construction device for providing continuous and stable power in the steel beam dragging construction process;
the steel beam anchor seat device 43 is formed by welding steel plates, and the anchor seat device and a steel beam web are connected by groove butt welding.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A counter force bracket structure for longitudinal drawing construction of a steel beam, characterized in that the counter force bracket structure comprises:
a base platform (1);
a plurality of steel pipe brackets (2) which are arranged on the top surface of the foundation bearing platform (1) in pairs;
the slideway beam (3) is arranged on the top surface of the steel pipe bracket (2);
the dragging system (4) is arranged on one side of the top surface of the slideway beam (3), and the dragging system (4) is used for dragging the steel beam to be replaced on the top surface of the slideway beam (3); wherein,
the foundation bearing platform (1) is a driving-in type steel pipe pile foundation structure;
the steel pipe support (2) comprises a vertical upright column structure and an inclined upright column structure.
2. Reaction force bracket structure for steel beam longitudinal traction construction according to claim 1, characterized in that the foundation cap (1) comprises:
a bearing platform structure (10);
a plurality of steel pipe piles (11) arranged on the bottom surface of the bearing platform structure (10);
and a plurality of reinforcing steel bars (12) which are arranged at the top end of each steel pipe pile (11) and are embedded in the bottom surface of the bearing platform structure (10).
3. A counterforce support structure for steel beam longitudinal traction construction according to claim 1, wherein the steel pipe support (2) comprises a plurality of steel pipe sub-supports (20) arranged in pairs, each of the steel pipe supports (20) comprising:
a pair of lateral transverse bridge distribution beams (21) arranged side by side on the top surface of the foundation bearing platform (1);
a middle transverse bridging distribution beam (22) arranged side by side between the pair of lateral transverse bridging distribution beams (21);
a longitudinal distribution beam (23) located below the middle transverse distribution beam (22);
the vertical steel pipe upright columns (24) are positioned between the bottom surfaces of the lateral transverse bridge distribution beams (21) and the top surface of the foundation bearing platform (1);
a pair of inclined steel pipe columns (25) are positioned between the bottom surface of the longitudinal bridge distribution beam (23) and the top surface of the foundation bearing platform (1);
a plurality of connection systems (26);
the embedded parts (27) are arranged at the bottom ends of the vertical steel pipe columns (24) and the inclined steel pipe columns (25); wherein,
the bottom end of the vertical steel pipe upright post (24) is connected with the top surface of the foundation bearing platform (1) through the embedded part (27);
one end of each inclined steel pipe column (25) is inserted into the bottom surface of the longitudinal bridge distribution beam (23), the other end of each inclined steel pipe column is connected with the top surface of the foundation bearing platform (1) through the embedded part (27), and the inclined steel pipe columns (25) and the top surface of the foundation bearing platform (1) are configured into a first triangular structure;
the vertical steel pipe upright post (24) is connected with the first triangular structure through the connecting system (26).
4. A counter support structure for use in longitudinal traction construction of steel girders according to claim 3, wherein:
the steel pipe supports (20) are arranged side by side.
5. A counterforce support structure for steel beam longitudinal traction construction according to claim 2, wherein the steel pipe support (2) comprises a plurality of steel pipe sub-supports (20) arranged in pairs and side by side;
the bottom surface of the bearing platform structure (10) is correspondingly provided with a plurality of steel pipe piles (11) in the area corresponding to each steel pipe support (20), and the length direction of each steel pipe support (20) corresponds to the arrangement direction of the corresponding steel pipe piles (11).
6. A counterforce support structure for steel beam longitudinal traction construction according to claim 1, wherein the slideway beam (3) comprises two i-beams (30) arranged side by side;
and a first stiffening plate (31) is arranged between the upper flange and the lower flange of each I-shaped steel (30) according to a preset distance.
7. A counterforce support structure for steel beam longitudinal traction construction according to claim 6, wherein:
at least one second stiffening plate (32) is arranged between the upper flange and the lower flange of the I-shaped steel (30) and between every two adjacent first stiffening plates (31).
8. Reaction support structure for the longitudinal drawing construction of steel beams according to claim 1, characterised in that the drawing system (4) comprises in succession a reaction foundation (40), a continuous jack (41), a steel strand (42) and a steel beam anchorage device (43).
9. A counterforce support structure for steel beam longitudinal traction construction according to claim 8, wherein the counterforce seat (40) is welded by steel plates into a box section structure;
the web of the reaction force seat (40) is aligned with the web of the slideway beam (3).
10. A use method of a counterforce support structure for longitudinal traction construction of steel beams is characterized by comprising the following steps:
arranging a basic bearing platform (1) in a preset area;
the top surface of the foundation bearing platform (1) is provided with a plurality of paired steel pipe brackets (2);
a slideway beam (3) is arranged on the top surface of the steel pipe bracket (2);
a dragging system (4) is arranged on one side of the top surface of the slideway beam (3);
dragging the steel beam to be replaced by using the dragging system (4) to perform beam replacement work; wherein,
the foundation bearing platform (1) is a driving-in type steel pipe pile foundation structure;
the steel pipe support (2) comprises a vertical upright column structure and an inclined upright column structure.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011395301.0A CN112593490B (en) | 2020-11-30 | 2020-11-30 | Counter-force support structure for longitudinal dragging construction of steel beam and application method of counter-force support structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011395301.0A CN112593490B (en) | 2020-11-30 | 2020-11-30 | Counter-force support structure for longitudinal dragging construction of steel beam and application method of counter-force support structure |
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| CN112593490A CN112593490A (en) | 2021-04-02 |
| CN112593490B true CN112593490B (en) | 2022-08-12 |
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| KR101200986B1 (en) * | 2012-04-18 | 2012-11-13 | 주식회사 인터컨스텍 | Beam launcher having service winch for constructing bridge |
| CN202809492U (en) * | 2012-09-05 | 2013-03-20 | 中铁十六局集团第五工程有限公司 | Dragging system of steel truss girder obliquely crossing existing line through continuous jack in guide rail-free way |
| CN105568853B (en) * | 2014-10-09 | 2017-03-01 | 中铁十局集团有限公司 | Wide-span reinforced concrete flitch-trussed beam side position is traversing, the construction method of the beam that falls |
| CN208151868U (en) * | 2018-04-24 | 2018-11-27 | 中铁上海工程局集团有限公司 | A kind of counter-force base device for drawing jack placement for steel truss girder |
| CN109356021A (en) * | 2018-11-27 | 2019-02-19 | 中铁六局集团有限公司 | Temporary rest pier waterborne and its construction method |
| CN111733703A (en) * | 2020-07-02 | 2020-10-02 | 中国建筑第八工程局有限公司 | Accumulated dragging and pushing construction mechanism for bridge structure and construction method thereof |
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