CN111188278A - Jig frame structure, jig frame assembly and construction method - Google Patents
Jig frame structure, jig frame assembly and construction method Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 168
- 239000010959 steel Substances 0.000 claims abstract description 168
- 238000000034 method Methods 0.000 claims abstract description 5
- 239000004567 concrete Substances 0.000 claims description 29
- 239000002131 composite material Substances 0.000 claims description 17
- 238000009415 formwork Methods 0.000 claims description 6
- 238000004080 punching Methods 0.000 claims description 6
- 239000000969 carrier Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 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
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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
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
- E01D2/04—Bridges characterised by the cross-section of their bearing spanning structure of the box-girder type
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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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Abstract
The application discloses bed-jig structure, bed-jig subassembly and construction method, this bed-jig structure includes: the support body is used for supporting the steel box girders so that the steel box girders are assembled at the position which is 100cm away from the ground, and the lower end of the support body is fixedly connected with the fixing surface. The steel case roof beam assembles the precision that leads to because of the high altitude among the correlation technique and hangs down, and construction safety risk is big, problem that the efficiency of construction is low is solved in this application.
Description
Technical Field
The application relates to the field of steel box girder bed-jig, in particular to a bed-jig structure, a bed-jig assembly and a construction method.
Background
The steel-concrete composite beam steel beam part is a straight web plate opening steel box, and is connected into a three-box structure through a box-to-box coupling beam, and the top is provided with shear nails for effective connection with the bridge deck plate. The installation mode mainly adopts the construction method of erecting temporary buttresses, lifting on the flat ground and integrally casting the concrete bridge deck slab, and because the steel-concrete combined beam is erected in the high air, the assembly precision is difficult to control when the high-altitude steel box beam is assembled, the construction safety risk is large, and a plurality of supports are required to be erected when the high-altitude assembly is carried out, so that the support material investment is large, and the construction efficiency is low.
Aiming at the problems of low assembly precision, high construction safety risk and low construction efficiency caused by high-altitude assembly of the steel box girder in the related technology, an effective solution is not provided at present.
Disclosure of Invention
The application mainly aims to provide a jig frame structure, a jig frame assembly and a construction method, and aims to solve the problems that in the related art, steel box girders are low in assembling precision, high in construction safety risk and low in construction efficiency due to high-altitude assembling.
In order to achieve the above object, the present application provides a jig frame structure including: the support body is used for supporting the steel box girders so that the steel box girders are assembled at the position which is 100cm away from the ground, and the lower end of the support body is fixedly connected with the fixing surface.
Further, the upper end of the frame body is provided with a buffer part which is used for being in direct contact with the steel box girder; the support body is including backup pad one, stand, backup pad two and the bearing piece that sets gradually, backup pad one is used for dismantling fixed connection with the stationary plane, the bolster is located bearing piece upper end.
Furthermore, the first supporting plate is a steel plate flange, and the steel plate flange is fixedly connected with the fixed surface through foundation bolts; the upright posts are steel pipes, and the upper ends and the lower ends of the steel pipes are fixedly connected with the first supporting plate and the second supporting plate respectively; the second support plate is a circular steel plate welded with the upper end of the steel pipe; the steel pipe is arranged coaxially with the first support plate and the second support plate.
Furthermore, the bearing part comprises an I-shaped steel arranged on the upper end face of the support plate and an adjusting steel plate arranged on the upper end face of the I-shaped steel, the I-shaped steel is positioned in the middle of the support plate, and the buffer part is arranged on the upper end face of the adjusting steel plate.
A jig frame assembly comprises at least two jig frame structures, wherein the at least two jig frame structures are fixedly connected through a connecting piece; the connecting piece is designed into an I-shaped steel transverse connection, and two ends of the I-shaped steel transverse connection are respectively and fixedly connected with adjacent frame bodies.
A steel-concrete composite beam on-site assembling construction method is characterized by comprising the following steps:
presetting a fixing surface, installing a frame body on the fixing surface, hoisting the steel box girders to be assembled on the frame body, enabling the height of the steel box girders to be less than 100cm from the ground, assembling the plurality of steel box girders on the frame body, and hoisting the assembled steel box girders to a girder frame; wherein,
(1) presetting a fixing surface to install and position the embedded part on the ground, and erecting a formwork to pour the concrete ground;
(2) the mounting frame body is an upright post with the strength meeting the bearing requirement, and a first support plate and a second support plate are respectively welded at the two ends of the upright post;
fixing one end of the upright post, which is welded with the first support plate, with the embedded part, fixing the load-bearing part on the second support plate, and adjusting the height difference among the tire carriers by selecting load-bearing parts with different sizes, wherein the height of the assembled tire carriers is not more than 100 cm;
the bearing part is provided with an adjusting steel plate, and the pre-camber and the longitudinal curve between the steel-concrete composite beams are adjusted by selecting steel plates with different thicknesses;
(3) hoisting the steel box girders comprises the steps of hoisting the steel box girders to be assembled to a bearing part of a jig frame through a crane and adjusting the distance between the adjacent steel box girders;
(4) the tops of the steel box girders are connected with the bridge deck plates through shear nails, the adjacent bridge deck plates form an integral bridge deck through longitudinal wet joints, and the adjacent steel box girders are bolted through cross beams;
(5) and integrally hoisting the spliced steel-concrete composite beam to the beam frame.
Further, the specific mode of the step (1) is as follows: the method comprises the following steps of blanking according to the design size of the foundation bolt, bending and forming, threading at the end, punching 4 holes in the corresponding positions on the steel plate by using a punching machine, installing the foundation bolt and a nut to form a combined embedded part, installing and positioning the embedded part, and then erecting a formwork and pouring the concrete ground.
Further, in the step (2), the upright post is made of a steel pipe with a diameter of 426x8 and is made of Q235B, the first support plate is a 50x50x2cm steel plate flange, the second support plate is a 50x2cm steel plate, and the first support plate is fixed with the embedded part through anchor bolts.
Further, step (2) also includes that stiffening ribs are evenly welded along the periphery of the steel pipe, and the stiffening ribs are welded with the adjacent first supporting plate and the second supporting plate.
Further, the step (2) further comprises that each steel box girder corresponds to at least two moulding beds, adjacent moulding beds are connected through transverse connection, the bearing part adopts I-steel, and the height difference of each I-steel is set according to the design pre-camber of the steel-concrete composite girder.
In the embodiment of the application, the mode of installing the support body used for assembling the steel box girder in the low altitude on the ground is adopted, the support body used for supporting the steel box girder is fixed on the fixing surface, the steel box girders can be assembled at the position which is 100cm away from the ground, and the aim of assembling the steel box girder at the position which is lower away from the ground is fulfilled, so that the splicing precision of the steel box girder is improved, the construction safety risk is reduced, the investment of a support is reduced, the technical effect of improving the construction efficiency is achieved, and the problems that the assembling precision of the steel box girder is low due to high altitude assembling in the related technology, the construction safety risk is large, and the construction efficiency is low are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic structural diagram of a frame body in an embodiment of the present application;
the steel box girder comprises a fixing surface 1, anchor bolts 2, a frame body 3, a buffering member 31, a bearing member 32, a support plate II 33, a stand column 34, a stiffening rib 35, a support plate I36, a connecting member 4 and a steel box girder 5.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, 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 only partial 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.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 3, an embodiment of the present application provides a jig frame structure, including: a support body 3 for supporting steel box girder 5 to make a plurality of steel box girders 5 assemble apart from ground 100cm below position, 3 lower extremes of support body are used for with stationary plane 1 fixed connection.
In this embodiment, support body 3 supports steel box girder 5, make steel box girder 5 assemble the construction in the position apart from ground 100cm, including bridge deck plate is fixed and wet seam construction etc., steel box girder 5 is apart from the height control of ground by support body 3, preferably 40-80cm or 60cm, be convenient for construct, reduce the construction risk, owing to reduced the buildding of support, make the efficiency of construction obtain effectively improving, and saved the support material, reduce construction cost, support body 3 lower extreme is fixed with stationary plane 1, stationary plane 1 can be the higher ground of hardness or the concrete ground after pouring, preferably the concrete ground that hardness up to standard after pouring, avoid support body 3 to sink.
As shown in fig. 1 to 3, a buffer member 31 is arranged at the upper end of the frame body 3, the buffer member 31 is used for directly contacting with the steel box girder 5, the frame body 3 comprises a first support plate 36, a stand column 34, a second support plate 33 and a bearing member 32 which are sequentially arranged, the first support plate 36 is used for being detachably and fixedly connected with the fixed surface 1, and the buffer member 31 is arranged at the upper end of the bearing member 32; here, the cushion member 31 is a rubber pad.
Specifically, it should be noted that the frame body 3 is composed of a first supporting plate 36, an upright 34 arranged on the first supporting plate 36, a second supporting plate 33 arranged on the upright 34 and a bearing member 32 arranged on the second supporting plate 33, the first supporting plate 36 is connected with the fixing surface 1, the fixing surface 1 can be a concrete hardened ground, so as to provide a good supporting capability, the first supporting plate 36 is detachably connected with the fixing surface 1, so as to facilitate the installation and the disassembly of the whole frame body 3, so that the frame body 3 can be reused, the upright 34 is arranged on the first supporting plate 36 and can be welded with the first supporting plate 36, the upright 34 is welded with the second supporting plate 33, a buffer member 31 at the upper end of the bearing member 32 is in direct contact with the lower end of the steel box girder 5, the impact force caused by the installation of the steel box girder 5 is buffered through the buffer member 31, so as to ensure the structural integrity, the buffer member 31 can be a rubber pad, so as to, the bearing member 32 may be of a structure having a strong supporting force.
As shown in fig. 1 to 3, the first support plate 36 is a steel plate flange, and the steel plate flange is fixedly connected with the fixed surface 1 through anchor bolts 2; the upright column 34 is a steel pipe, and the upper end and the lower end of the steel pipe are fixedly connected with the first support plate 36 and the second support plate 33 respectively; the second support plate 33 is a circular steel plate welded with the upper end of the steel pipe; wherein, the steel pipe is arranged coaxially with the first support plate 36 and the second support plate 33.
Specifically, it should be noted that the first support plate 36 is a steel plate flange, the fixing surface 1 is a concrete hardened ground, an embedded steel plate matched with the steel plate flange can be embedded in the fixing surface 1, the steel plate flange and the embedded steel plate are connected through the foundation bolt 2 in a flange mode, the connection strength is further improved, the stand column 34 is provided with a steel pipe, and the size of the steel pipe is set to be equal to that of the steel pipe
The steel pipe is Q235B, so [ sigma ] is]＝170MPa,[τ]＝117MPa；
Calculating to obtain the sectional area A of the steel pipe which is 105.055cm2＝0.0105055m2；
Radius of gyration of steel pipe: i is 14.781 cm;
the supporting height H of the steel beam is 50cm, then L0＝H＝50cm；
Therefore, the slenderness ratio:
stability is satisfied.
Looking up the design specification of the steel structure GB 50017 plus 2017, the steel upright post belongs to a rod with a b-type section. Looking up a table according to the b-type section stability coefficient to obtain:
allowable support force of single steel pipe:
and (3) calculating the stress of the steel pipe column support: n1.2 × 265/26T 12.2T <143.2T, satisfying the requirement.
And the steel pipe, the first support plate 36 and the second support plate 33 are coaxially arranged, so that the stress of the three parts is more uniform, and the use stability of the frame body 3 is guaranteed.
As shown in fig. 1 to 3, a plurality of stiffening ribs 35 are disposed between the steel pipe and the first support plate 36, and between the steel pipe and the second support plate 33, and the stiffening ribs 35 are uniformly distributed along the circumferential direction of the steel pipe.
Specifically, the stiffening ribs 35 further improve the connection strength between the steel pipe and the first support plate 36 and between the steel pipe and the second support plate 33, thereby improving the overall structural strength of the frame body 3.
As shown in fig. 1 to 3, the bearing member 32 includes an i-steel disposed on the upper end surface of the second support plate 33 and an adjusting steel plate disposed on the upper end surface of the i-steel, the i-steel is located in the middle of the second support plate 33, and the buffer member 31 is disposed on the upper end surface of the adjusting steel plate.
Specifically, it should be noted that the i-beam has good bearing capacity and light weight, and in order to further improve the bearing capacity, the i-beam can be a double-spliced i-beam, and is located in the middle of the second support plate 33, so that the i-beam and the second support plate 33 are arranged coaxially, and the stress is more uniform, and the adjusting steel plate is placed on the i-beam, so that the elevation of the steel box girder 5 is finely adjusted, and the number and the size of the adjusting steel plate can be determined according to the construction conditions, and the number and the size of the adjusting steel plate are not limited here.
As shown in fig. 1 to 3, the present embodiment provides a jig frame assembly, which includes at least two jig frame structures fixedly connected by a connecting member 4.
In this implementation, the bed-jig subassembly comprises two at least bed-jig structures, and every bed-jig subassembly supports a steel box girder 5 to through two at least bed-jig structures to 5 bearing of steel box girder, the stability of guarantee use, and fixed through connecting piece 4 between the bed-jig structure, reach the problem that takes place to topple in preventing the bed-jig structure use.
As shown in fig. 1 to 3, the connecting member 4 is a transverse h-beam, and two ends of the transverse h-beam are respectively and fixedly connected to the adjacent frame bodies 3.
Specifically, it should be noted that the transverse connection of the i-steel has strong structural strength, and two ends of the i-steel are respectively fixed with the corresponding frame bodies 3, so that the overturning of the jig frame structure in the using process is prevented.
As shown in fig. 1 to 3, the embodiment of the present application provides an assembly structure, including a plurality of steel box girders 5 that set gradually, 5 lower extremes of every steel box girder all are equipped with at least one bed-jig structure, and the upper end and the 5 lower extremes of steel box girder of bed-jig structure are connected, and the bed-jig structure sets up to two at least, and two at least bed-jig structures pass through connecting piece 4 fixed connection, and the bed-jig structure is located 5 diaphragm unders of steel box girder, and adjacent steel box girder 5 passes through the crossbeam bolt.
Specifically, it should be noted that, steel box girder 5 erects in proper order on the bed-jig structure along the horizontal direction, erects on support body 3 promptly, and the bed-jig structure is established to two at least for steel box girder 5's load distribution is structural at two at least bed-jigs, ensures stability in use, and the bed-jig structure passes through connecting piece 4 to be fixed, avoids taking place to topple in the use, and adjacent steel box girder 5 passes through the crossbeam bolt joint, increases the structural strength after steel box girder 5 assembles.
As shown in fig. 1 to 3, a method for assembling and constructing a reinforced concrete composite beam on site includes:
presetting a fixing surface 1, installing a frame body 3 on the fixing surface 1, hoisting a steel box girder 5 to be assembled on the frame body 3, enabling the height of the steel box girder 5 to be less than 100cm from the ground, assembling a plurality of steel box girders 5 on the frame body 3, and hoisting the assembled steel box girders 5 to a girder frame; wherein,
(1) presetting a fixed surface 1 to install and position the embedded part on the ground, and erecting a formwork to pour the concrete ground;
(2) the mounting frame body 3 is an upright column 34 with the strength meeting the bearing requirement, and a first support plate 36 and a second support plate 33 are respectively welded at two ends of the upright column 34;
fixing one end of the upright post 34, which is welded with a first support plate 36, with the embedded part, fixing a second support plate 33 with a bearing part 32, and adjusting the height difference among the moulding beds by selecting the bearing parts 32 with different sizes, wherein the height of the assembled moulding bed is not more than 100 cm;
the bearing part 32 is provided with an adjusting steel plate, and the pre-camber and the longitudinal curve between the steel-concrete composite beams are adjusted by selecting steel plates with different thicknesses;
(3) hoisting the steel box girders 5 comprises hoisting the steel box girders 5 to be assembled onto the bearing parts 32 of the jig frame by a crane and adjusting the distance between the adjacent steel box girders 5;
(4) the tops of the steel box girders 5 are connected with the bridge deck plates through shear nails, the adjacent bridge deck plates form an integral bridge deck through longitudinal wet joints, and the adjacent steel box girders 5 are bolted through cross beams;
(5) and integrally hoisting the spliced steel-concrete composite beam to the beam frame.
The specific mode of the step (1) is as follows: blanking according to the design size of the foundation bolt 2, bending and forming, threading at the end, punching 4 holes in the corresponding position on the steel plate by using a punching machine, installing the foundation bolt 2 and a nut to form a combined embedded part, and erecting and positioning the embedded part, and then erecting a formwork and pouring the concrete ground.
In the step (2), the upright post 34 is a phi 426x8cm steel pipe made of Q235B, the first support plate 36 is a 50x50x2cm steel plate flange, and the second support plate 33 is a phi 33 steel plate flange
And the first steel plate and the first support plate 36 are fixed with the embedded part through the foundation bolt 2.
And (2) uniformly welding stiffening ribs 35 along the periphery of the steel pipe, wherein the stiffening ribs 35 are welded with the adjacent first support plate 36 and the second support plate 33.
And (2) each steel box girder 5 corresponds to at least two jig frames, the adjacent jig frames are connected in a transverse connection mode, the bearing parts 32 are made of I-shaped steel, and the height difference of the I-shaped steel is set according to the design pre-camber of the steel-concrete composite girder.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A jig frame structure characterized by comprising: the support body is used for supporting the steel box girders so that the steel box girders are assembled at the position which is 100cm away from the ground, and the lower end of the support body is fixedly connected with the fixing surface.
2. The jig frame structure according to claim 1, wherein the upper end of the frame body is provided with a buffer member, and the buffer member is used for being in direct contact with the steel box girder;
the support body is including backup pad one, stand, backup pad two and the bearing piece that sets gradually, backup pad one is used for dismantling fixed connection with the stationary plane, the bolster is located bearing piece upper end.
3. The jig frame structure as claimed in claim 2, wherein the first support plate is a steel plate flange, and the steel plate flange is fixedly connected with the fixing surface through foundation bolts;
the upright posts are steel pipes, and the upper ends and the lower ends of the steel pipes are fixedly connected with the first supporting plate and the second supporting plate respectively;
the second support plate is a circular steel plate welded with the upper end of the steel pipe; wherein,
the steel pipe is arranged coaxially with the first support plate and the second support plate.
4. The jig frame structure according to claim 3, wherein the bearing member comprises an I-steel disposed on the upper end surface of the second supporting plate and an adjusting steel plate disposed on the upper end surface of the I-steel, the I-steel is located in the middle of the second supporting plate, and the buffer member is disposed on the upper end surface of the adjusting steel plate.
5. A jig frame assembly comprising at least two jig frame structures according to any one of claims 1 to 4, the at least two jig frame structures being fixedly connected by a connecting member; wherein,
the connecting piece is designed into an I-shaped steel transverse connection, and two ends of the I-shaped steel transverse connection are respectively and fixedly connected with adjacent frame bodies.
6. A steel-concrete composite beam on-site assembling construction method is characterized by comprising the following steps:
presetting a fixing surface, installing a frame body on the fixing surface, hoisting the steel box girders to be assembled on the frame body, enabling the height of the steel box girders to be less than 100cm from the ground, assembling the plurality of steel box girders on the frame body, and hoisting the assembled steel box girders to a girder frame; wherein,
(1) presetting a fixing surface to install and position the embedded part on the ground, and erecting a formwork to pour the concrete ground;
(2) the mounting frame body is an upright post with the strength meeting the bearing requirement, and a first support plate and a second support plate are respectively welded at the two ends of the upright post;
fixing one end of the upright post, which is welded with the first support plate, with the embedded part, fixing the load-bearing part on the second support plate, and adjusting the height difference among the tire carriers by selecting load-bearing parts with different sizes, wherein the height of the assembled tire carriers is not more than 100 cm;
the bearing part is provided with an adjusting steel plate, and the pre-camber and the longitudinal curve between the steel-concrete composite beams are adjusted by selecting steel plates with different thicknesses;
(3) hoisting the steel box girders comprises the steps of hoisting the steel box girders to be assembled to a bearing part of a jig frame through a crane and adjusting the distance between the adjacent steel box girders;
(4) the tops of the steel box girders are connected with the bridge deck plates through shear nails, the adjacent bridge deck plates form an integral bridge deck through longitudinal wet joints, and the adjacent steel box girders are bolted through cross beams;
(5) and integrally hoisting the spliced steel-concrete composite beam to the beam frame.
7. The on-site assembling construction method of the steel-concrete composite beam as claimed in claim 6, wherein the concrete manner of the step (1) is as follows: the method comprises the following steps of blanking according to the design size of the foundation bolt, bending and forming, threading at the end, punching 4 holes in the corresponding positions on the steel plate by using a punching machine, installing the foundation bolt and a nut to form a combined embedded part, installing and positioning the embedded part, and then erecting a formwork and pouring the concrete ground.
8. The field assembling construction method for the steel-concrete composite beam according to claim 7, wherein in the step (2), the upright column is made of a steel pipe with the diameter of 426x8cm and is made of Q235B, the first support plate is made of a steel plate flange with the diameter of 50x2cm, the second support plate is made of a steel plate with the diameter of 50x2cm, and the first support plate is fixed with the embedded part through anchor bolts.
9. The field assembling construction method for the steel-concrete composite beam according to claim 8, wherein the step (2) further comprises uniformly welding stiffening ribs along the periphery of the steel pipe, and the stiffening ribs are welded with the adjacent first supporting plate and the second supporting plate.
10. The field assembling construction method for the steel-concrete composite beam according to claim 9, wherein the step (2) further comprises that each steel box beam corresponds to at least two jig frames, adjacent jig frames are connected through transverse connection, the bearing part is made of I-shaped steel, and the height difference of each I-shaped steel is set according to the design pre-camber of the steel-concrete composite beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100803.XA CN111188278B (en) | 2020-02-18 | Site assembly construction method for steel-concrete composite beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100803.XA CN111188278B (en) | 2020-02-18 | Site assembly construction method for steel-concrete composite beam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111188278A true CN111188278A (en) | 2020-05-22 |
| CN111188278B CN111188278B (en) | 2024-11-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113799946A (en) * | 2021-10-27 | 2021-12-17 | 上海外高桥造船有限公司 | Support column type jig frame |
| CN117488700A (en) * | 2023-12-28 | 2024-02-02 | 中铁四局集团有限公司 | Steel box girder assembly jig frame structure |
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| CN117488700A (en) * | 2023-12-28 | 2024-02-02 | 中铁四局集团有限公司 | Steel box girder assembly jig frame structure |
| CN117488700B (en) * | 2023-12-28 | 2024-04-12 | 中铁四局集团有限公司 | Steel box girder assembly jig frame structure |
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