CN114214969A - A kind of wide-splitting structure and method of split-width bridge - Google Patents
A kind of wide-splitting structure and method of split-width bridge Download PDFInfo
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- CN114214969A CN114214969A CN202111453018.3A CN202111453018A CN114214969A CN 114214969 A CN114214969 A CN 114214969A CN 202111453018 A CN202111453018 A CN 202111453018A CN 114214969 A CN114214969 A CN 114214969A
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 238000010276 construction Methods 0.000 claims description 13
- 239000000853 adhesive Substances 0.000 claims description 10
- 230000001070 adhesive effect Effects 0.000 claims description 10
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003351 stiffener Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000003313 weakening effect 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
- E01D22/00—Methods or apparatus for repairing or strengthening existing bridges ; Methods or apparatus for dismantling 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
- E01D19/00—Structural or constructional details of 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
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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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
- E01D19/00—Structural or constructional details of bridges
- E01D19/12—Grating or flooring for bridges; Fastening railway sleepers or tracks to bridges
- E01D19/125—Grating or flooring for 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
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
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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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
本发明公开了一种拼宽桥的拼宽结构及拼宽方法，涉及桥梁技术领域，该拼宽结构包括：套箍组件，用于与既有盖梁连接，所述套箍组件包括套箍顶板、套箍腹板及固定组件，所述套箍顶板的两侧垂直连接有所述套箍腹板，所述套箍腹板互相平行，所述套箍顶板与所述套箍腹板所围成的空腔用于与既有盖梁嵌套连接；以及支撑组件，与所述套箍腹板固定连接，所述支撑组件的顶部具有支撑平面。由于套箍腹板的长度可根据实际需求进行设定，在拼宽桥梁上部结构及支座系统的总高度受限的情况下，拼宽桥上部结构梁高的取值范围更大，因此该拼宽结构能适用于更多类型的拼宽桥上部结构，实现在既有盖梁上安装拼宽桥梁。
The invention discloses a width-splitting structure and a width-splitting method of a split-width bridge, and relates to the technical field of bridges. The width-splitting structure comprises: a hoop assembly for connecting with an existing cover beam; the hoop assembly includes a hoop The top plate, the ferrule web and the fixing assembly, the ferrule webs are vertically connected on both sides of the ferrule top plate, the ferrule webs are parallel to each other, and the ferrule top plate is connected to the ferrule web. The enclosed cavity is used for nested connection with the existing cover beam; and a support assembly is fixedly connected with the ferrule web, and the top of the support assembly has a support plane. Since the length of the hoop web can be set according to the actual requirements, in the case of limited total height of the superstructure of the split-width bridge and the total height of the bearing system, the value range of the beam height of the superstructure of the split-width bridge is larger. The split-width structure can be applied to the superstructure of more types of split-width bridges, and the split-width bridge can be installed on the existing cover beams.
Description
Technical Field
The invention relates to the technical field of bridges, in particular to a width splicing structure and a width splicing method of a width splicing bridge.
Background
With the rapid development of cities, the functions and traffic capacities of some overpasses cannot meet the demand of increasing traffic volume, and the overpasses become daily congestion points of urban traffic and are urgently needed to be solved. On the premise that the existing bridge meets the automobile load requirement, in order to avoid large-dismantling and large-building, the method for reconstructing and utilizing the overpasses is quick and suitable.
The most common of these is the widening of existing bridges. When the bridge pier of the existing bridge to be widened is in a portal frame mode and the existing bent cap of the portal frame occupies the position of the widened bridge, the difficulty in widening the bridge is high, and the decisive factor for restricting the success of widening the bridge is formed. As the elevations of the new bridge deck and the old bridge deck at the splicing width position need to be connected smoothly, the upper structure of the newly-built splicing width bridge conflicts with the existing capping beam of the existing bridge.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a width splicing structure of a width splicing bridge, which realizes the installation of the width splicing bridge on the existing bent cap.
The invention also provides a width splicing method of the width splicing structure with the width splicing bridge.
The width splicing structure of the width splicing bridge in the embodiment of the first aspect of the invention comprises: the hoop assembly is used for being connected with an existing cover beam and comprises a hoop top plate, hoop webs and a fixing assembly, the hoop webs are vertically connected to two sides of the hoop top plate and are parallel to each other, and a cavity defined by the hoop top plate and the hoop webs is used for being connected with the existing cover beam in a nested mode; and the support component is fixedly connected with the hoop web, and the top of the support component is provided with a support plane.
In a further embodiment, the ferrule assembly further comprises anchor bolts, wherein a plurality of anchor bolt holes are uniformly arranged on the web of the ferrule, and the anchor bolts are matched with the anchor bolt holes.
In a further embodiment, the ferrule assembly further comprises a ferrule base plate for connecting the ferrule web.
In a further embodiment, the support assembly includes a bracket, the bracket includes a bracket top plate and a stiffening rib, the bracket top plate is vertically disposed outside the hoop web, the bracket top plate is parallel to the horizontal plane, the stiffening rib is fixedly connected with the bracket top plate and the hoop web.
In a further embodiment, the stiffener exhibits a trapezoidal longitudinal cross-section.
The width splicing method of the width splicing bridge in the embodiment of the second aspect of the invention comprises the following steps:
prefabricating the hoop assembly and the support assembly;
polishing the existing bent cap until the structural surface of the existing bent cap is exposed, and drilling an anchor bolt hole on the existing bent cap according to the arrangement position of an anchor bolt;
mounting the hoop assembly on the existing cover beam, so that the anchor bolt hole in the hoop assembly corresponds to the anchor bolt hole in the existing cover beam;
filling a gap between the hoop assembly and the existing cover beam with structural adhesive for adhering steel;
mounting a support system on the bracket top plate, and then mounting the upper structure of the split-wide bridge on the support system;
and pouring a cast-in-situ leveling layer on the hoop top plate according to the bridge deck elevation of the spliced wide bridge.
In a further embodiment, the ferrule assembly is mounted to the capping beam with the ferrule web parallel to the side of the existing capping beam and with the ferrule web spaced from the side of the existing capping beam.
In a further embodiment, the cuff web is spaced 1cm from the side of the existing capping beam.
In a further embodiment, the length of the bracket top plate is determined according to the position of the support system, and a safety distance is reserved between the outermost side of the bracket top plate and the position of the support system.
The width splicing structure of the width splicing bridge provided by the embodiment of the invention at least has the following beneficial effects: the hoop assembly is installed on the existing cover beam, the hoop top plate is attached to the top surface of the existing cover beam, the hoop web is parallel to the side face of the existing cover beam, then the hoop top plate and the hoop web are connected and fixed with the existing cover beam through the fixing assembly, and then the adhesive steel structure glue is poured into a gap between the hoop web and the existing cover beam to achieve the fixed connection of the hoop assembly and the existing cover beam. Because the length of cuff web can be set for according to actual demand, under the circumstances that the overall height of piecing together wide bridge superstructure and support system is limited, the value range of piecing together wide bridge superstructure beam height is bigger, consequently should piece together wide structure and can be applicable to the piecing together wide bridge superstructure of more types, realize installing on existing bent cap and piece together wide bridge. The splicing width structure has the advantages of simple manufacture, convenient and fast construction and convenient popularization, can realize industrialized manufacture, has high assembly degree and high construction speed, greatly lightens construction pollution, and has the remarkable advantages of greenness, energy conservation and high efficiency.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The invention is further described with reference to the following figures and examples, in which:
FIG. 1 is a view showing the construction of a widening structure according to an embodiment of the present invention;
FIG. 2 is a plan view of a widening structure according to an embodiment of the invention;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 1;
fig. 4 is a schematic diagram of a widening structure according to an embodiment of the present invention.
Reference numerals:
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The method is characterized in that the existing capping beam is widened by splicing, a common solution is to newly pour a concrete bracket in a rib planting mode to be connected with the existing capping beam, and then support the upper structure of the widened bridge by the bracket. The technology is adopted on the premise that the height of the existing bent cap is high enough, the upper structure of the spliced wide bridge, the support system and the concrete corbel can be sequentially arranged from top to bottom, but the height of the concrete corbel is usually high, so that the height of the upper structure of the spliced wide bridge is not enough, the upper structure of the spliced wide bridge needs to select a steel structure beam with a short beam height, the engineering investment is increased, and even the scheme cannot be implemented due to the insufficient beam height.
The widening structure of the widening bridge according to the first aspect of the present invention includes a ferrule assembly, a supporting assembly 20 and a fixing assembly.
Specifically, the hoop assembly is used for being connected with the existing cover beam 2 and comprises a hoop top plate 11, hoop webs 12 and a fixing assembly, the hoop webs 12 are vertically connected to two sides of the hoop top plate 11 and are parallel to each other, a cavity defined by the hoop top plate 11 and the hoop webs 12 on two sides of the hoop top plate 11 is used for being connected with the existing cover beam 2 in a nested manner, and the hoop top plate 11 and the hoop webs 12 are fixedly connected with the existing cover beam 2 through the fixing assembly; and a support member 20 fixedly connected to the ferrule web 12, the support member 20 having a support surface at the top thereof.
During construction, the hoop assembly is installed on the existing cover beam 2, the hoop top plate 11 is attached to the top surface of the existing cover beam 2, the hoop web 12 is parallel to the side surface of the existing cover beam 2, a certain gap is kept between the hoop web 12 and the side surface of the existing cover beam 2, then the hoop top plate 11, the hoop web 12 and the existing cover beam 2 are fixedly connected through the fixing assembly, and the steel-bonded structural adhesive 14 is poured into the gap between the hoop web 12 and the existing cover beam 2, so that the hoop assembly is fixedly connected with the existing cover beam 2. Under the limited circumstances of the total height of piecing together wide bridge superstructure, support system, because the length of cuff web 12 can be set for according to actual demand for the value range of piecing together 3 beam heights of wide bridge superstructure is bigger, and then makes this piece together wide structure and can be applicable to the superstructure of more types, and the practicality is stronger. The splicing width structure has the advantages of simple manufacture, convenient and fast construction and convenient popularization, realizes industrialized manufacture, has high assembly degree and high construction speed, and greatly lightens construction pollution.
Wherein, the material of the hoop component and the supporting component 20 is steel. In one embodiment, the components can be directly connected by fusion welding, and the connection is convenient and reliable. Further, the ferrule top plate 11 should extend a short distance beyond the outermost side of the ferrule web 12 to meet the width requirement of the weld at the connection of the ferrule web 12 and the ferrule top plate 11.
In one possible embodiment, the fixing assembly comprises anchor bolts 13, a plurality of anchor bolt holes 100 are uniformly arranged on the hoop top plate 11 and the hoop web 12, and the anchor bolts 13 are matched with the anchor bolt holes 100. Wherein the anchor holes 100 on the ferrule top plate 11 are arranged at certain intervals to meet the construction requirements. The anchor holes 100 in the hoop web 12 should be calculated according to the stress of the existing capping beam 2 structure to determine the arrangement position and the spacing. At the same time, the anchor openings 100 should be offset from the locations where the support member 20 is connected to the ferrule web 12. Furthermore, the anchor bolt 13 is designed in such a way that the safety distance requirement is met with the hoop top plate 11, the hoop web 12 and the edge of the existing bent cap 2. Further, the anchor bolt 13 is a high-strength anchor bolt 13 to improve the reliability of the connection of the anchor bolt 13. The hoop top plate 11 and the hoop web plate 12 are integrally connected with the existing cover beam 2, so that the high-strength anchor bolts 13 can synchronously and uniformly bear shearing force from the bracket, and the connection reliability of the bracket and the existing cover beam is greatly improved. The hoop top plate 11 and the hoop web 12 are filled with a bonded steel structural adhesive through the uniformly arranged high-strength anchor bolts 13 and gaps between the hoop web 12 and the existing bent cap 2, so that the fixed connection with the existing bent cap 2 is realized, stress on the bracket is uniformly transmitted to the existing bent cap 2, and the structural stability of the existing bent cap 2 is ensured. Due to the integral stress characteristics of the hoop top plate 11 and the hoop web 12, the position of the high-strength anchor bolt 13 can be properly adjusted, so that the situation that the high-strength anchor bolt 13 is passively adjusted due to the influence of the position of the structural steel bar of the existing cover beam 2 is avoided, and meanwhile, the weakening of the high-strength anchor bolt 13 on the cross section of the existing cover beam 2 is effectively reduced. The width splicing structure is simple in connection, clear in force transmission path and reliable in structural performance.
As an improvement of the above embodiment, the tensile force borne by the hoop web 12 corresponding to the region of the support seat is relatively large, and the high-strength anchor bolts 13 on the hoop web 12 penetrate through the existing cover beam 2 to be pulled oppositely, so that the hoop webs 12 on the two sides bear the force jointly, which not only can solve the problem of insufficient anchoring depth of the single-side high-strength anchor bolts 13, but also can effectively avoid buckling damage of the hoop webs 12, thereby ensuring the reliability of the widening structure.
In one possible embodiment, the ferrule assembly further includes a ferrule base plate for connecting the ferrule webs 12 on either side of the ferrule top plate. The hoop top plate 11, the hoop web 12 and the hoop bottom plate form an annular closed structure, the existing cover beam 2 is encircled in the hoop assembly, and the overall stress characteristic of the hoop assembly is improved.
In one possible embodiment, the support assembly 20 comprises a bracket, the bracket comprises a bracket top plate 21 and a stiffening rib 22, the bracket top plate 21 is vertically arranged outside the hoop web 12, the bracket top plate 21 is parallel to the horizontal plane, and the stiffening rib 22 is fixedly connected with the bracket top plate 21 and the hoop web 12. The bracket top plate 21 serves as an installation foundation of the support system 40, and then the wide-bridge upper structure 3 is placed on the support system 40, so that installation of the wide-bridge upper structure is achieved.
In one embodiment, the corbel top plate 21 and the hoop web 12 are welded through melting, the stiffening ribs 22 are welded through melting with the corbel top plate 21 and the hoop web 12, the stiffening ribs 22 below and near the support system 40 are arranged in an encrypted manner to meet the stress requirement, and the stiffening ribs 22 at the rest positions are arranged according to the construction requirement.
In one possible embodiment, the longitudinal cross-section of the stiffener 22 is trapezoidal in shape. The cross section of the bracket top plate 21 is rectangular, and the bracket top plate 21 is horizontally arranged and vertically connected to the outer side of the hoop web 12; the longitudinal section of the stiffening rib 22 is a trapezoidal section and is positioned below the corbel top plate 21, and the stiffening rib 22 is vertically arranged and is perpendicular to the corbel top plate 21 and the hoop web 12.
The width splicing method of the width splicing bridge in the embodiment of the second aspect of the invention comprises the following steps:
a prefabricated ferrule assembly and support assembly 20;
polishing the existing bent cap 2 until the structural surface of the existing bent cap 2 is exposed, and drilling an anchor bolt hole 100 on the existing bent cap 2 according to the arrangement position of an anchor bolt 13;
mounting the hoop assembly on the existing capping beam 2 so that the anchor hole 100 on the hoop assembly corresponds to the anchor hole 100 on the existing capping beam 2;
a gap between the hoop assembly and the existing cover beam 2 is filled with a bonded steel structural adhesive 14;
mounting a support system 40 on the bracket top plate 21, and then mounting the split-wide bridge superstructure 3 on the support system 40;
and pouring the cast-in-situ leveling layer 4 on the hoop top plate 11 according to the bridge deck elevation of the spliced wide bridge.
The hoop assembly and the support assembly 20 are prefabricated in a factory, so that the assemblies are firmly connected into a whole, anchor bolt holes 100 are reserved in a hoop web 12 and a hoop top plate 11 according to the arrangement position of an anchor bolt 13, and the finished products are transported to a construction site; the cast-in-place leveling layer 4 is arranged on the hoop top plate 11 and used for adjusting the elevation of the spliced wide bridge deck so as to enable the spliced wide bridge deck to be smooth to the existing bridge.
In one possible embodiment, the ferrule assembly is mounted to the capping beam with the ferrule web 12 parallel to the side of the existing capping beam 2 and with the ferrule web 12 spaced from the side of the existing capping beam 2. The gap is filled with a bonded steel structural adhesive 14 to improve the reliability of the connection of the ferrule assembly to the existing capping beam 2.
Further, the cuff web 12 is spaced 1cm from the side of the existing capping beam 2. The distance between the hoop web 12 and the side face of the existing cover beam 2 is adjusted to be 1cm, and sufficient space is reserved for filling the adhesive steel structural glue 14, so that the reliability of connection between the hoop assembly and the existing cover beam 2 is ensured. Meanwhile, the distance is limited to 1cm, so that the phenomenon that the gap between the hoop web 12 and the side face of the existing cover beam 2 is too large is avoided, and the hoop web 12 has a large moving space to reduce the connection reliability of the splicing structure.
In a possible embodiment, the length of the bracket top plate 21 is determined according to the position of the support system 40, and a safety distance is reserved from the outermost side of the bracket top plate 21 to the position of the support system 40 so as to prevent the split-width bridge superstructure 3 from falling off.
The following describes a widening structure and a widening method according to an embodiment of the present invention. It is to be understood that this example is illustrative only and is not limiting upon the embodiments of the present invention.
Referring to fig. 1 to 4, the widening structure of the widening bridge comprises a steel ferrule assembly and a steel corbel. The cross section of the steel ferrule assembly is n-shaped or □ -shaped, the steel ferrule assembly comprises two steel ferrule webs 12 and a steel ferrule top plate 11, and the steel ferrule webs 12 and the steel ferrule top plate 11 are connected in a welding mode. According to the arrangement position of the high-strength anchor bolt 13, anchor bolt holes 100 are reserved in a steel ferrule web 12 and a steel ferrule top plate 11, the steel ferrule assembly is connected with the existing bent cap 2 through the high-strength anchor bolt 13 and steel-bonded structural adhesive 14, and the gap between the steel ferrule assembly and the existing bent cap 2 is recommended to be 1 cm. The steel corbel sets up on steel ferrule web 12, and adopt welded connection between the steel ferrule web 12, the steel corbel includes steel stiffening rib 22 and steel corbel roof 21, adopt welded connection between steel stiffening rib 22 and the steel corbel roof 21, the length of steel corbel roof 21 is confirmed according to support system 40's position, and consider to stretch out one section safe distance of outside support, the width of steel corbel roof 21 satisfies the width demand of piecing together wide bridge superstructure 3, in order to prevent to piece together wide bridge superstructure 3 roof beam that falls. A support system 40 is provided on the steel corbel top plate 21 for supporting the widening bridge superstructure 3. The cast-in-place leveling layer 4 is arranged on the steel hoop top plate 11 and used for adjusting the bridge deck elevation of the spliced wide bridge and the existing bridge.
During construction, the steel ferrule assembly and the steel corbel are prefabricated in a factory, all steel plates are welded firmly to form a whole, anchor bolt holes 100 are reserved in a steel ferrule web 12 and a steel ferrule top plate 11 according to the arrangement position of a high-strength anchor bolt 13, and the steel ferrule web and the steel corbel are transported to the site; polishing the existing bent cap 2 until the structural surface of the existing bent cap 2 is exposed, and drilling an anchor bolt hole 100 on the existing bent cap 2 according to the arrangement position and depth of the high-strength anchor bolt 13; hoisting the steel ferrule assembly to enable the anchor bolt holes 100 in the steel ferrule assembly to correspond to the anchor bolt holes 100 in the existing bent cap 2 one by one, then pouring chemical glue into the anchor bolt holes 100, and installing and screwing the high-strength anchor bolts 13; sealing the gap between the steel ferrule assembly and the outer side of the existing bent cap 2, and filling the gap between the steel ferrule assembly and the existing bent cap 2 with a bonded steel structural adhesive 14 by adopting a grouting method, so that the steel ferrule is firmly connected with the existing bent cap 2; arranging a support system 40 on the steel corbel top plate 21, and placing the split-wide bridge upper structure 3 on the support system 40; and pouring the cast-in-situ leveling layer 4 on the steel hoop top plate 11 according to the bridge deck elevation of the split wide bridge, and connecting the cast-in-situ leveling layer 4 and the cast-in-situ layer of the split wide bridge upper structure 3 into a whole.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.
Claims (9)
1. A piece together wide structure of piece together wide bridge, its characterized in that includes:
the hoop assembly is used for being connected with an existing cover beam and comprises a hoop top plate, hoop webs and a fixing assembly, the hoop webs are connected to two sides of the hoop top plate and are parallel to each other, a cavity defined by the hoop top plate and the hoop webs is used for being connected with the existing cover beam in a nested mode, and the hoop top plate and the hoop webs are fixedly connected with the existing cover beam through the fixing assembly; and
and the support component is fixedly connected with the hoop web, and the top of the support component is provided with a support plane.
2. The widening structure of a widening bridge according to claim 1, wherein the fixing component comprises an anchor bolt, a plurality of anchor bolt holes are uniformly arranged on the hoop top plate and the hoop web, and the anchor bolt is matched with the anchor bolt holes.
3. The widening structure of a widening bridge according to claim 2, wherein the ferrule assembly further comprises a ferrule base plate for connecting the ferrule web.
4. The widening structure of the widening bridge according to claim 1, wherein the support assembly comprises a bracket, the bracket comprises a bracket top plate and a stiffening rib, the bracket top plate is vertically arranged outside the hoop web, the bracket top plate is parallel to the horizontal plane, and the stiffening rib is fixedly connected with the bracket top plate and the hoop web.
5. A bridge widening construction according to claim 4, wherein the stiffening ribs are trapezoidal in longitudinal cross-section.
6. A width splicing method of a width splicing bridge is characterized by comprising the following steps:
prefabricating the hoop assembly and the support assembly;
polishing the existing bent cap until the structural surface of the existing bent cap is exposed, and drilling an anchor bolt hole on the existing bent cap according to the arrangement position of an anchor bolt;
mounting the hoop assembly on the existing cover beam, so that the anchor bolt hole in the hoop assembly corresponds to the anchor bolt hole in the existing cover beam;
filling a gap between the hoop assembly and the existing cover beam with structural adhesive for adhering steel;
mounting a support system on the bracket top plate, and then mounting the upper structure of the split-wide bridge on the support system;
and pouring a cast-in-situ leveling layer on the hoop top plate according to the bridge deck elevation of the spliced wide bridge.
7. A method of widening a bridge according to claim 6, wherein the mounting of the ferrule assembly to the capping beam is performed with the ferrule web parallel to the side of the existing capping beam and with the ferrule web spaced from the side of the existing capping beam.
8. A method of widening a widening bridge according to claim 7, wherein the ferrule web is spaced 1cm from the side of the existing capping beam.
9. A width splicing method of a width splicing bridge according to claim 6, wherein the length of the bracket top plate is determined according to the position of the support system, and a safety distance is reserved between the outermost side of the bracket top plate and the position of the support system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453018.3A CN114214969B (en) | 2021-12-01 | 2021-12-01 | Width splicing structure and method of width splicing bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111453018.3A CN114214969B (en) | 2021-12-01 | 2021-12-01 | Width splicing structure and method of width splicing bridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114214969A true CN114214969A (en) | 2022-03-22 |
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| CN114214969B (en) | 2024-07-30 |
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