CN110258354B - Bridge construction method and bridge - Google Patents
Bridge construction method and bridge Download PDFInfo
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- CN110258354B CN110258354B CN201910719816.2A CN201910719816A CN110258354B CN 110258354 B CN110258354 B CN 110258354B CN 201910719816 A CN201910719816 A CN 201910719816A CN 110258354 B CN110258354 B CN 110258354B
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- box girder
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- stone
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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
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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Abstract
The invention discloses a bridge construction method and a bridge, wherein the bridge construction method comprises the following steps: s10: connecting one end of the joint to a reinforcement cage of a box girder body of the bridge, and exposing the other end of the joint to the hardened concrete of the box girder body; s20: connecting the steel structure of the upper cushion stone with a joint; s30: and pouring and molding the upper cushion stone. According to the bridge construction method and the bridge, the box girder body and the upper pad stone are respectively poured and molded, so that the flexibility of manufacturing the upper pad stone is improved, the size of the upper pad stone can be adjusted according to actual needs, and the purpose of adjusting the cross slope of the bridge is achieved. In addition, after the box girder body is poured, because the bottom surface of the box girder body is not provided with the cushion stone, the bottom surface is relatively flat, the box girder body can be directly arranged in a common girder manufacturing pedestal, the requirement of the box girder body on the matching of the girder manufacturing pedestal is reduced, the manufacturing period of the box girder body is favorably shortened, and the manufacturing cost of a bridge is favorably reduced.
Description
Technical Field
The invention relates to the field of bridges, in particular to a bridge construction method and a bridge.
Background
As shown in fig. 1, a typical prefabricated box-type bridge 100 generally includes a box girder body 11 and an abutment 12, and a support 13 is provided between the box girder body 11 and the abutment 12. In order to facilitate adjustment of the abutment 13 to hold the plumb bob, a lower bolster 14 is provided between the abutment 13 and the pier 12. In order to adjust the cross slope of the box girder body 11, an upper cushion stone 15 is arranged between the support 13 and the box girder body 11, and the upper cushion stone 15 is mostly wedge-shaped and protrudes out of the bottom surface of the box girder body 11.
Typically, the upper bolster 15 is generally prefabricated integrally with the box girder body 11. Namely, when the reinforcement cage of the box girder body 11 is manufactured, the reinforcement of the upper cushion stone 15 is directly manufactured at the position of the upper cushion stone 15 at the same time, and then the whole body is placed into a box girder model, and finally the box girder model is poured and formed.
Similar to fig. 1, fig. 2 is a schematic structural view of another bridge 100, which is different from fig. 1 in that a capping beam 121 is further disposed between the pier 12 and the lower bolster 14.
The bridge 100 manufactured according to the above process generally has the following disadvantages: firstly, because the whole prefabricated structure is prefabricated, the inclination of the upper cushion stone 15 is relatively fixed after the whole prefabricated structure is manufactured, and the later adjustment is difficult according to actual needs. Secondly, when the box girder is prefabricated, since the upper cushion stone 15 protrudes from the ground of the box girder body 11, a corresponding groove needs to be formed at the bottom of the girder fabrication pedestal to fabricate the protruding upper cushion stone 15. In addition, since the positions and sizes of the upper padstones 15 of different box girders may not be consistent, the grooves of the girder fabrication pedestal may be customized for one box girder adaptation, but the girder fabrication pedestal may not satisfy other box girder fabrications. If different beam-making pedestals are made for different box beams, the manufacturing cost period of the box beams is prolonged, and the economic cost is increased.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a bridge construction method and a bridge.
The invention solves the technical problems through the following technical scheme:
a bridge construction method is characterized by comprising the following steps: s10: connecting one end of a joint to a reinforcement cage of a box girder body of the bridge, and exposing the other end of the joint to the hardened concrete of the box girder body; s20: connecting the steel structure of the upper cushion stone with the joint; s30: and pouring and molding the upper cushion stone.
In this scheme, through adopting above method, through pouring the shaping respectively with case roof beam body and last stone, improved the flexibility of making the stone of going up, be favorable to adjusting the size of stone of going up according to actual need to reach the purpose of adjustment bridge cross slope. In addition, after the box girder body is poured, because the bottom surface of the box girder body is not provided with the cushion stone, the bottom surface is relatively flat, the box girder body can be directly arranged in a common girder manufacturing pedestal, the requirement of the box girder body on the matching of the girder manufacturing pedestal is reduced, the manufacturing period of the box girder body is favorably shortened, and the manufacturing cost of a bridge is favorably reduced.
Preferably, the step S10 further includes placing the reinforcement cage of the box girder body into a box girder model, and casting the box girder body.
In the scheme, by adopting the method, after the reinforcement cage is placed in the box girder model and pouring is completed, one end of the joint connected with the reinforcement cage is wrapped in the hardened concrete of the box girder body, and the other end of the joint is exposed out of the hardened concrete. The steel structure that is favorable to the later stage to go up the stone that fills up is connected with the joint.
Preferably, the step S10 further includes disposing the joint at the bottom of the box girder model, and embedding the joint at the bottom of the box girder model into a space.
In this scheme, through adopting above method, through the bottom of setting at the case roof beam model with connecting to will connect embedding occupation of a position piece, when pouring the case roof beam body, avoid connecting the problem that whole were pour, be favorable to the later stage to get rid of occupation of a position piece, and expose the joint, also be favorable to improving the quality that connects and the steel construction of last base stone is connected. In addition, the joint is arranged at the bottom of the box girder model, so that the flatness of the bottom surface of the box girder body is improved, and the requirement of the box girder body on a girder manufacturing pedestal is reduced.
Preferably, the step S10 further includes embedding the joint at the bottom of the box girder model into an extruded plate.
In the scheme, by adopting the method, the extruded sheet is used as the occupied part, so that the joint is protected from being corroded, the extruded sheet is detached quickly, and the joint is connected with the steel structure of the upper base stone.
Preferably, the step S10 further includes installing a grout outlet and a grout hole for grouting the upper shim stone to the box girder model.
In the scheme, the method is favorable for smoothly finishing the grouting of the upper cushion stone in the later period, and the compactness of grouting is improved.
Preferably, the step S20 further includes performing a tensioning process on the hardened box girder body, and then moving the box girder body to a girder fabrication pedestal.
In the scheme, by adopting the method, the box girder body is subjected to the tensioning process, so that the prestress of the box girder body is favorably improved, and the quality of the bridge is further improved.
Preferably, the step S20 further includes installing the model of the upper bolster to the installation position of the upper bolster.
In this scheme, through adopting above method, install the model of stone of packing to carry out the pouring of stone of packing, be favorable to improving the precision of the last stone of packing after the shaping.
Preferably, the step S20 further includes that the steel structure of the upper bolster is connected to the joint by welding.
In this scheme, through adopting above method, couple together the steel construction and the joint that go up the base stone through adopting the welded mode, be favorable to improving the quality of connecting, reduced the probability that goes up the base stone and connect the disconnection, and then improve the life-span of bridge.
A bridge, characterized in that it is built using the bridge building method as described above.
In this scheme, through adopting above structure, through adopting above method to build the bridge for the bottom surface of the box girder body of bridge is more level and more smooth, is favorable to reducing the requirement of box girder body to the adaptation degree of system roof beam pedestal, and then can improve the suitability of system roof beam pedestal, thereby is favorable to reducing the construction cost of bridge. In addition, the upper pad stone is independently poured, so that the size of the upper pad stone can be adjusted more flexibly, the requirement for adjusting the bridge cross slope is further met, the difficulty of adjusting the bridge cross slope is reduced, the period of adjusting the bridge cross slope is favorably saved, the economic cost of adjusting the bridge cross slope is reduced, and the bridge quality is favorably improved.
Preferably, the bridge comprises a box girder body and an upper pad stone, the box girder body further comprises a joint, the joint is used for connecting a steel structure of the upper pad stone, one end of the joint is connected with a reinforcement cage of the box girder body, and the other end of the joint is exposed out of hardened concrete of the box girder body; the steel structure of going up the base stone with the other end of joint is connected, the steel structure of going up the base stone reaches the joint embedding in the hardened concrete of going up the base stone, the bottom surface and the top surface of going up the base stone form the contained angle, the contained angle is used for adjusting the cross slope of bridge.
In this scheme, through adopting above structure, utilize to connect the independent preparation of having realized between the box girder body of bridge and the last stone of bedding for the bottom surface of the box girder body of bridge is more level and more smooth, is favorable to reducing the requirement of box girder body to the adaptation degree of system roof beam pedestal, and then can improve the suitability of system roof beam pedestal, thereby is favorable to reducing the construction cost of bridge. In addition, the upper pad stone is independently poured, so that the size of the upper pad stone can be adjusted more flexibly, the requirement for adjusting the bridge cross slope is further met, the difficulty of adjusting the bridge cross slope is reduced, the period of adjusting the bridge cross slope is favorably saved, the economic cost of adjusting the bridge cross slope is reduced, and the bridge quality is favorably improved.
Preferably, the bridge further comprises a slurry outlet and a slurry injection hole, wherein the slurry outlet and the slurry injection hole are used for injecting cement slurry into the upper pad stone mould.
In this scheme, through structure more than adopting, through setting up grout outlet and slip casting hole, be favorable to the mould of the more closely knit packing of grout to go up the stone, be favorable to improving the quality of going up the stone.
Preferably, one end of the grout outlet and one end of the grout injection hole are connected with the upper pad, and the other end of the grout outlet and the other end of the grout injection hole are flush with the wall surface of the box girder body.
In this scheme, through structure more than adopting, through the wall parallel and level with grout outlet and injected hole and case roof beam body, be favorable to the later stage to irritate cement mortar, reduce the degree of difficulty of irritating cement mortar.
On the basis of the common knowledge in the field, the above preferred conditions can be combined randomly to obtain the preferred embodiments of the invention.
The positive progress effects of the invention are as follows:
according to the invention, the box girder body and the upper pad stone are respectively poured and molded, so that the flexibility of manufacturing the upper pad stone is improved, and the size of the upper pad stone can be adjusted according to actual needs, thereby achieving the purpose of adjusting the cross slope of the bridge. In addition, after the box girder body is poured, because the bottom surface of the box girder body is not provided with the cushion stone, the bottom surface is relatively flat, the box girder body can be directly arranged in a common girder manufacturing pedestal, the requirement of the box girder body on the matching of the girder manufacturing pedestal is reduced, the manufacturing period of the box girder body is favorably shortened, and the manufacturing cost of a bridge is favorably reduced.
Drawings
Fig. 1 is a schematic structural diagram of a typical bridge in the prior art.
Fig. 2 is a schematic structural diagram of another typical bridge in the prior art.
Fig. 3 is a schematic flow chart of a bridge construction method according to embodiment 1 of the present invention.
Fig. 4 is a schematic structural diagram of the upper cushion stone manufacturing in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of a bridge in embodiment 2 of the present invention.
Description of reference numerals:
Box girder body 11
Reinforcement cage 111
Case beam hardened concrete 112
Mat hardened concrete 152
Included angle alpha
Steps S10-S30
Detailed Description
The present invention will be more clearly and completely described below by way of examples and with reference to the accompanying drawings, but the present invention is not limited thereto.
Example 1
As shown in fig. 3 to 4, the present embodiment is a method for constructing a bridge 100, and the method for constructing a bridge 100 includes the following steps: s10: connecting one end of the joint to a reinforcement cage of the box girder body 11 of the bridge 100, and exposing the other end of the joint to the hardened concrete of the box girder body 11; s20: connecting the steel structure of the upper cushion stone with a joint; s30: and pouring and molding the upper cushion stone. This embodiment is through pouring the shaping respectively with box girder body 11 and last stone of packing, has improved the flexibility of stone of packing in the preparation, is favorable to adjusting the size of stone of packing according to actual need to reach the purpose of adjusting bridge 100 cross slope. In addition, after the box girder body 11 is poured, because the bottom surface of the box girder body 11 is not provided with the stone, the bottom surface is relatively flat, the box girder body 11 can be directly arranged in a common girder manufacturing pedestal, the requirement of the box girder body 11 on the matching of the girder manufacturing pedestal is reduced, the manufacturing period of the box girder body 11 is favorably shortened, and the manufacturing cost of the bridge 100 is favorably reduced.
In other embodiments, step S10 further includes placing the reinforcement cage of the box girder body 11 into the box girder model, and casting the box girder body 11. In this embodiment, after the steel reinforcement cage is placed in the box girder model and the pouring is completed, the joint is wrapped in the hardened concrete of the box girder body 11 at one end connected with the steel reinforcement cage, and the other end of the joint is exposed out of the hardened concrete. The steel structure that is favorable to the later stage to go up the stone that fills up is connected with the joint.
As an embodiment, the step S10 further includes disposing a joint at the bottom of the box girder model, and inserting the joint at the bottom of the box girder model into the occupation member. This embodiment is through connecting the setting in the bottom of case roof beam model to connect the embedding and account for a position piece, when pouring case roof beam body 11, avoided connecting the whole problem of being pour, be favorable to the later stage to get rid of and account for a position piece, and expose the joint, also be favorable to improving the quality that connects and the steel construction of last stone is connected. In addition, the joint is arranged at the bottom of the box girder model, so that the flatness of the bottom surface of the box girder body 11 is improved, and the requirement of the box girder body 11 on a girder manufacturing pedestal is reduced.
As a preferred embodiment, step S10 further includes embedding the joint at the bottom of the box girder model into the extruded sheet. This embodiment utilizes the extruded sheet as the occupation of a position spare, is favorable to the protection to connect and avoids being corroded, is favorable to demolising the extruded sheet fast, realizes connecting of the steel construction of joint and last padstone. The thickness of the extruded sheet ranges from 20mm to 100mm, and in this embodiment, the thickness of the extruded sheet is 30 mm.
In order to facilitate the stone-on-pad grouting, step S10 further includes installing the grout outlet 16 and the grout outlet 17 of the stone-on-pad grouting to the box girder model. This embodiment is favorable to the smooth completion in later stage to go up the slip casting of stone, improves the closely knit degree of slip casting. The diameters of the grout outlet 16 and the grout inlet 17 are in the range of 40mm to 80mm, and in this embodiment, the diameters of the grout outlet 16 and the grout inlet 17 are both 50 mm.
As an embodiment, the step S20 further includes performing a tensioning process on the hardened box girder body 11, and then moving the box girder body 11 to the girder fabrication bed. In this embodiment, a tensioning process is applied to the box girder body 11, which is beneficial to improving the prestress of the box girder body 11, and further improves the quality of the bridge 100.
As a preferred embodiment, step S20 further includes installing the upper bolster mold 18 to the upper bolster installation position. The mould 18 of the base stone is installed to this embodiment to carry out pouring of the base stone, be favorable to improving the precision of the base stone after the shaping. As shown in fig. 4, the upper bolster mold 18 has been installed in place with the outer side of the mold 18 provided with a bracket 19. Grout outlet 16 and grouting hole 17 all are connected with mould 18 to grout outlet 16 and grouting hole 17 all are in the top of mould 18, make full use of gravity for inside grout more convenient the inflow mould 18, are favorable to improving the closely knit degree of grout. The size of the upper pad stone die 18 is determined according to the requirement of the actually adjusted cross slope size, so that the flexible adjustment of the size of the upper pad stone is facilitated, and the improvement of the quality of the bridge 100 is also facilitated. In other embodiments, a slurry having a strength greater than 50MPa may also be poured into the interior of the upper bolster mold 18.
In other embodiments, step S20 further includes welding the steel structure of the upper bolster to the joint. The steel construction that this embodiment will go up the base stone through adopting the welded mode couples together with the joint, is favorable to improving the quality of connecting, has reduced the probability of going up base stone and joint disconnection, and then improves the life-span of bridge 100.
Example 2
As shown in fig. 5, this embodiment is a bridge 100, and the bridge 100 is constructed using the construction method of the bridge 100 of embodiment 1. In the embodiment, the bridge 100 is built by adopting the method, so that the bottom surface of the box girder body 11 of the bridge 100 is smoother, the requirement of the box girder body 11 on the adaptability of the girder-making pedestal is favorably reduced, the applicability of the girder-making pedestal can be further improved, and the building cost of the bridge 100 is favorably reduced. In addition, through independently pouring the upper pad stone 15, the size of the upper pad stone 15 can be adjusted more flexibly, the requirement for adjusting the cross slope of the bridge 100 is further met, the difficulty for adjusting the cross slope of the bridge 100 is reduced, the period for adjusting the cross slope of the bridge 100 is favorably saved, the economic cost for adjusting the cross slope of the bridge 100 is reduced, and the quality of the bridge 100 is favorably improved.
As an embodiment, the bridge 100 includes a box girder body 11 and an upper pad stone 15, the box girder body 11 further includes a joint 20, the joint 20 is used for connecting a steel structure 151 of the upper pad stone 15, one end of the joint 20 is connected with a reinforcement cage 111 of the box girder body 11, and the other end of the joint 20 is exposed out of the box girder hardened concrete 112; the steel structure 151 of the upper cushion stone 15 is connected with the other end of the joint 20, the steel structure 151 of the upper cushion stone 15 and the joint 20 are embedded into the cushion stone hardened concrete 152, an included angle alpha is formed between the bottom surface 153 and the top surface 154 of the upper cushion stone 15, and the included angle alpha is used for adjusting the cross slope of the bridge 100. The independent manufacture between the box girder body 11 of the bridge 100 and the upper cushion stone 15 is realized by the connector 20 in the embodiment, so that the bottom surface of the box girder body 11 of the bridge 100 is smoother, the requirement of the box girder body 11 on the adaptation degree of a girder manufacturing pedestal is favorably reduced, the applicability of the girder manufacturing pedestal can be further improved, and the construction cost of the bridge 100 is favorably reduced. In addition, through independently pouring the upper pad stone 15, the size of the upper pad stone 15 can be adjusted more flexibly, the requirement for adjusting the cross slope of the bridge 100 is further met, the difficulty for adjusting the cross slope of the bridge 100 is reduced, the period for adjusting the cross slope of the bridge 100 is favorably saved, the economic cost for adjusting the cross slope of the bridge 100 is reduced, and the quality of the bridge 100 is favorably improved. In this embodiment, the steel structure 151 may also be made of steel bars.
In other embodiments, the bridge 100 further comprises a grout outlet 16 and a grout injection hole 17, and the grout outlet 16 and the grout injection hole 17 are used for injecting grout into the mold of the upper pad 15. This embodiment is through setting up out grout hole 16 and injected hole 17, is favorable to the more closely knit mould of filling upper pad stone 15 of grout, is favorable to improving the quality of upper pad stone 15.
Specifically, in the present embodiment, one end of the grout outlet 16 and the grout outlet 17 is connected to the upper pad 15, and the other end of the grout outlet 16 and the grout outlet 17 is flush with the wall surface of the box girder body 11. This embodiment is through the wall parallel and level with grout outlet 16 and slip casting hole 17 and case roof beam body 11, is favorable to the later stage to irritate cement mortar, reduces the degree of difficulty of irritating cement mortar.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A bridge construction method is characterized by comprising the following steps:
s10: connecting one end of a joint to a reinforcement cage of a box girder body of the bridge, and exposing the other end of the joint to the hardened concrete of the box girder body;
s20: connecting the steel structure of the upper cushion stone with the joint;
s30: pouring and molding the upper cushion stone;
the step S10 further comprises the steps of putting the reinforcement cage of the box girder body into a box girder model, and pouring and molding the box girder body;
the step S10 further includes disposing the joint at the bottom of the box girder model, and embedding the joint at the bottom of the box girder model into a space.
2. The bridge construction method according to claim 1, wherein the step S10 further comprises inserting the joints at the bottom of the box girder model into extruded plates.
3. The bridge construction method according to claim 1, wherein the step S10 further comprises installing grout holes and grout holes for grouting the upper shim stones to the box girder model.
4. The bridge construction method of claim 1, wherein the step S20 further comprises performing a tension process on the hardened box girder body and then moving the box girder body to a girder fabrication bed.
5. The bridge construction method of claim 4, wherein the step S20 further comprises installing the mold of the upper bolster to an installation position of the upper bolster.
6. The bridge construction method of claim 4, wherein the step S20 further comprises connecting the steel structure of the upper pad stone and the joint by welding.
7. A bridge, characterized in that it is constructed using the bridge construction method according to any one of claims 1-6.
8. The bridge according to claim 7, wherein the bridge comprises a box girder body and an upper pad stone, the box girder body further comprises a joint, the joint is used for connecting a steel structure of the upper pad stone, one end of the joint is connected with a reinforcement cage of the box girder body, and the other end of the joint is exposed out of hardened concrete of the box girder body; the steel structure of going up the base stone with the other end of joint is connected, the steel structure of going up the base stone reaches the joint embedding in the hardened concrete of going up the base stone, the bottom surface and the top surface of going up the base stone form the contained angle, the contained angle is used for adjusting the cross slope of bridge.
9. The bridge according to claim 8, further comprising a grout outlet and a grout injection hole for injecting grout into the upper bolster mold.
10. The bridge according to claim 9, wherein one end of the grout outlet and one end of the grout injection hole are connected with the upper pad stone, and the other end of the grout outlet and the other end of the grout injection hole are flush with the wall surface of the box girder body.
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| CN201910719816.2A CN110258354B (en) | 2019-08-06 | 2019-08-06 | Bridge construction method and bridge |
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| CN201910719816.2A CN110258354B (en) | 2019-08-06 | 2019-08-06 | Bridge construction method and bridge |
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| CN110258354B true CN110258354B (en) | 2021-09-17 |
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| KR101184654B1 (en) * | 2010-05-18 | 2012-09-21 | (주)대우건설 | Method for constructing united joint of tube filled concrete block |
| CN203034353U (en) * | 2013-01-31 | 2013-07-03 | 江苏淮安交通勘察设计研究院有限公司 | Connection structure of bridge support padstone and abutment |
| CN104594203B (en) * | 2014-12-31 | 2016-03-30 | 北京市市政专业设计院股份公司 | Upper pinner construction technology below a kind of beam body |
| CN205347964U (en) * | 2016-01-04 | 2016-06-29 | 湖北工业大学 | Multidirectional spacing roof beam device of preventing falling of bridge |
| CN208440970U (en) * | 2018-07-02 | 2019-01-29 | 中铁工程设计咨询集团有限公司 | Bent cap, bridge pier, the bridge of prefabrication and assembly construction bridge pier |
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