CN202899046U - Reinforced structure of simple supported bridge - Google Patents

Reinforced structure of simple supported bridge Download PDF

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Publication number
CN202899046U
CN202899046U CN 201220475677 CN201220475677U CN202899046U CN 202899046 U CN202899046 U CN 202899046U CN 201220475677 CN201220475677 CN 201220475677 CN 201220475677 U CN201220475677 U CN 201220475677U CN 202899046 U CN202899046 U CN 202899046U
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China
Prior art keywords
supported
bridge
freely
ruggedized construction
diaphragm
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Expired - Fee Related
Application number
CN 201220475677
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Chinese (zh)
Inventor
向发海
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
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Guiyang Aluminum Magnesium Design and Research Institute Co Ltd
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Priority to CN 201220475677 priority Critical patent/CN202899046U/en
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Publication of CN202899046U publication Critical patent/CN202899046U/en
Expired - Fee Related legal-status Critical Current
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Abstract

The utility model discloses a reinforced structure of a simple supported bridge. The reinforced structure of the simple supported bridge comprises a simple support beam (1) and piers (2) which are arranged under two ends of the simple support beam (1), wherein inclined struts (3) are arranged on the bottoms of the two piers (2), the bottom ends of the inclined struts (3) are connected with the bottoms of the piers (2), and the top ends of the inclined struts (3) are connected with the simple support beam (1). According to the reinforced structure of the simple supported bridge, the inclined struts which are concrete filled steel tubes and are in a splay shape are arranged in holes of the simple supported bridge, so that two supports are added to a prior simple supported bridge, a prior one-span simple supported beam is changed into a three-span continuous beam, a continuous system is utilized for reducing atress in the middle of the prior simple supported bridge, and therefore bearing capacity of a bridge span structure is improved. The reinforced structure of the simple supported bridge has the advantages of being convenient to construct, flexible, capable of meeting the requirement on improving bearing capacity and saving reinforce cost, and the like.

Description

A kind of freely-supported bridge ruggedized construction
Technical field
The utility model relates to a kind of freely-supported bridge ruggedized construction, belongs to the bridge construction technical field.
Background technology
The complexity of the diversity of bridge construction and bridge defect and mode of failure, determined old bridge reinforce be one very complicated and careful, and have the work of great flexibility.Present freely-supported bridge comprises simply supported beam and is located at the bridge pier of below, simply supported beam two ends.Simply supported beam is that a kind of cross section is the reinforced concrete beam of T shape.In the situation that class of loading improves, because present simply supported beam does not have crossbeam, therefore present simply supported beam transverse integral is poor, reduces supporting capacity so that the simply supported beam longitudinal crack is serious.
Summary of the invention
The purpose of this utility model is, a kind of freely-supported bridge ruggedized construction is provided.Make existing one to stride simply supported beam and become three-span continuous beam, utilize continuous system to reduce the stressed of existing simply supported beam middle part, thereby improve the bearing capacity of bridge span structure.
The technical solution of the utility model:
A kind of freely-supported bridge ruggedized construction comprises simply supported beam and the bridge pier that is located at below, simply supported beam two ends, and the bottom of described two bridge piers is equipped with diagonal brace, and the diagonal brace bottom is connected with the bridge pier bottom, and the diagonal brace top is connected with simply supported beam.
In the aforementioned freely-supported bridge ruggedized construction, the cross section of described simply supported beam is T shape.
In the aforementioned freely-supported bridge ruggedized construction, the beam rib of described simply supported beam bottom is provided with two through holes, is penetrated with diaphragm in the through hole, and two interior diaphragms of through hole connect through joist.
In the aforementioned freely-supported bridge ruggedized construction, the diaphragm of described through hole both sides is provided with snap ring.
In the aforementioned freely-supported bridge ruggedized construction, described diaphragm two ends are connected with the bridge pier bottom through diagonal brace.
In the aforementioned freely-supported bridge ruggedized construction, be provided with backing plate between described joist and the simply supported beam.
In the aforementioned freely-supported bridge ruggedized construction, described diagonal brace, diaphragm and joist are encased structures.
In the aforementioned freely-supported bridge ruggedized construction, described concrete filled steel tube is that concreting forms in steel pipe.
In the aforementioned freely-supported bridge ruggedized construction, described concrete adopts harsh concrete.
Compared with prior art, the utility model arranges concrete filled steel tube " splayed " end wall bracket in the hole of simple bridge, for existing simple bridge has increased by two supportings, thereby make original one to stride simply supported beam and become three-span continuous beam, utilize continuous system to reduce the stressed of original simply supported beam span centre section, thereby improve the bearing capacity of bridge span structure.According to the computational analysis of continuous beam calculation procedure, the bearing capacity of bridge span structure can improve more than the twice.The utility model is by arranging the wide transverse splicing concrete filled steel tube rod member of penetrating bridge under simply supported beam, at steel pipe and beam ribbed joint synapsis welding snap ring, to strengthen contacting of steel pipe and beam rib, effectively improved the connection between the girder, improved the transverse integral of bridge span structure.The utility model utilizes concrete filled steel tube as supporting rod, and Concrete Filled has strengthened the stability of steel pipe tube wall in steel pipe, and rigidity also is greatly improved resistance to overturning also much larger than steel work.In addition, in encased structures, adopt harsh concrete, reduced the consumption of water, avoided concrete segregation and contraction.Concrete filled steel tube utilizes the cuff effect of steel pipe, has improved concrete plastic property on the one hand, has overcome the weakness of Brittleness of Concrete; On the other hand, change concrete stress performance, become unidirectional pressurized and be three dimension stress, improved compressive strength.The utlity model has easy construction, flexible, satisfy and improve requirement for bearing capacity, save the plurality of advantages such as reinforcement cost.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the schematic diagram of simply supported beam;
Fig. 4 is the schematic diagram of concrete filled steel tube;
Fig. 5 is the schematic diagram of existing simple bridge.
Being labeled as in the accompanying drawing: 1-simply supported beam, 2-bridge pier, 3-diagonal brace, 4-beam rib, 5-through hole, 6-diaphragm, 7-joist, 8-snap ring, 9-backing plate, 10-steel pipe, 11-concrete.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples, but not as to any restriction of the present utility model.
Embodiment.
The utility model as depicted in figs. 1 and 2.A kind of freely-supported bridge ruggedized construction comprises simply supported beam 1 and the bridge pier 2 that is located at below, simply supported beam 1 two ends, and the bottom of described two bridge piers 2 is equipped with diagonal brace 3, and diagonal brace 3 bottoms are connected with bridge pier 2 bottoms, and diagonal brace 3 tops are connected with simply supported beam 1.Simply supported beam 1 as shown in Figure 3, the cross section of simply supported beam 1 is T shape.The beam rib 4 of simply supported beam 1 bottom is provided with two through holes 5, and the diaphragm 6 that is penetrated with in the through hole 5 in 6, two through holes of diaphragm 5 connects through joist 7.The diaphragm 5 of through hole 6 both sides is provided with snap ring 8.Diaphragm 6 two ends are connected with bridge pier 2 bottoms through diagonal brace 3.Be provided with backing plate 9 between joist 7 and the simply supported beam 1.Described diagonal brace 3, diaphragm 5 and joist 7 are encased structures.Concrete filled steel tube is to form at steel pipe 10 interior concretings 11.Concrete 11 adopts harsh concrete, can reduce the consumption of water, avoids concrete segregation and contraction.
Concrete reinforcing process of the present utility model and principle
Existing simple bridge comprises simply supported beam 1 and the bridge pier 2 that is positioned at below, simply supported beam 1 two ends as shown in Figure 5.Reinforcing process as shown in Figure 3, first the beam rib on the simply supported beam 1 that needs reinforcement 4 bores 5, two through hole 5 intervals of two through holes and arranges, through hole 5 is positioned at beam rib 4 bottoms and laterally drills through along simply supported beam 1.Then as depicted in figs. 1 and 2, two diaphragms 6 identical with simply supported beam 1 width are passed from through hole 5, in order to ensure diaphragm 6 can be in through hole 5 axial vibration, two snap rings 8 are enclosed within on the diaphragm 6 from diaphragm 6 two ends, and be close to the both sides of simply supported beam 1 upper beam rib 4, then weld together with diaphragm 6.The lower end of then welding respectively 3, four diagonal braces 3 of diagonal brace at two diaphragm 6 two ends is supported on respectively the bottom of existing two bridge piers 2, and is fixed.Owing to possibly can't be close to simply supported beam 1 bottom at reinforcing process middle diaphragm 6 two ends, in order to ensure simply supported beam 1 is formed stable support, between two diaphragm 6 two ends, be welded with joist 7, be provided with backing plate 9 between joist 7 and simply supported beam 1 bottom, the thickness of backing plate 9 is determined according to the gap between joist 7 and simply supported beam 1 bottom.Diagonal brace 3 in the utility model, diaphragm 5 and joist 7 are encased structures.Concrete filled steel tube is to form at steel pipe 10 interior concretings 11 as shown in Figure 4.Improve concrete plastic property on the one hand, overcome the weakness of Brittleness of Concrete; On the other hand, change concrete stress performance, become unidirectional pressurized and be three dimension stress, improved compressive strength.

Claims (9)

1. freely-supported bridge ruggedized construction, comprise simply supported beam (1) and be located at the bridge pier (2) of simply supported beam (1) two ends belows, it is characterized in that: the bottom of described two bridge piers (2) is equipped with diagonal brace (3), diagonal brace (3) bottom is connected with bridge pier (2) bottom, and diagonal brace (3) top is connected with simply supported beam (1).
2. described freely-supported bridge ruggedized construction according to claim 1, it is characterized in that: the cross section of described simply supported beam (1) is T shape.
3. described freely-supported bridge ruggedized construction according to claim 2, it is characterized in that: the beam rib (4) of described simply supported beam (1) bottom is provided with two through holes (5), be penetrated with diaphragm (6) in the through hole (5), the diaphragm (6) in two through holes (5) connects through joist (7).
4. described freely-supported bridge ruggedized construction according to claim 3, it is characterized in that: the diaphragm (5) of described through hole (6) both sides is provided with snap ring (8).
5. described freely-supported bridge ruggedized construction according to claim 4, it is characterized in that: described diaphragm (6) two ends are connected with bridge pier (2) bottom through diagonal brace (3).
6. described freely-supported bridge ruggedized construction according to claim 5 is characterized in that: be provided with backing plate (9) between described joist (7) and the simply supported beam (1).
7. the described freely-supported bridge of arbitrary claim ruggedized construction according to claim 3-6, it is characterized in that: described diagonal brace (3), diaphragm (5) and joist (7) are encased structures.
8. described freely-supported bridge ruggedized construction according to claim 7, it is characterized in that: described concrete filled steel tube is that concreting (11) forms in steel pipe (10).
9. described freely-supported bridge ruggedized construction according to claim 8, it is characterized in that: described concrete (11) adopts harsh concrete.
CN 201220475677 2012-09-18 2012-09-18 Reinforced structure of simple supported bridge Expired - Fee Related CN202899046U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220475677 CN202899046U (en) 2012-09-18 2012-09-18 Reinforced structure of simple supported bridge

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Application Number Priority Date Filing Date Title
CN 201220475677 CN202899046U (en) 2012-09-18 2012-09-18 Reinforced structure of simple supported bridge

Publications (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532760A (en) * 2014-12-16 2015-04-22 华中科技大学 Method for reinforcing simply-supported plate or simply-supported beam bridge
CN105696474A (en) * 2016-01-20 2016-06-22 中国矿业大学 Deformation-resisting strengthening method for arch bridge in surface deformation area
CN105755968A (en) * 2016-03-23 2016-07-13 韦积分 Reinforcement device for simply supported girder bridge
CN106894349A (en) * 2017-05-13 2017-06-27 林再颐 A kind of bridge of high-mechanic intensity
CN108842589A (en) * 2018-08-14 2018-11-20 南京理工大学 A kind of light-duty wooden landscape bridge
CN111636295A (en) * 2020-05-28 2020-09-08 浙江士高环境建设工程有限公司 Viaduct structure and construction process thereof
CN113216989A (en) * 2021-04-29 2021-08-06 中南大学 Shield constructs quick-witted reaction frame suitable for ramp of growing up starts

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104532760A (en) * 2014-12-16 2015-04-22 华中科技大学 Method for reinforcing simply-supported plate or simply-supported beam bridge
CN105696474A (en) * 2016-01-20 2016-06-22 中国矿业大学 Deformation-resisting strengthening method for arch bridge in surface deformation area
CN105755968A (en) * 2016-03-23 2016-07-13 韦积分 Reinforcement device for simply supported girder bridge
CN106894349A (en) * 2017-05-13 2017-06-27 林再颐 A kind of bridge of high-mechanic intensity
CN106894349B (en) * 2017-05-13 2018-10-12 安徽省公路工程建设监理有限责任公司 A kind of bridge of high-mechanic intensity
CN108842589A (en) * 2018-08-14 2018-11-20 南京理工大学 A kind of light-duty wooden landscape bridge
CN111636295A (en) * 2020-05-28 2020-09-08 浙江士高环境建设工程有限公司 Viaduct structure and construction process thereof
CN113216989A (en) * 2021-04-29 2021-08-06 中南大学 Shield constructs quick-witted reaction frame suitable for ramp of growing up starts

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Granted publication date: 20130424

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