CN106049253B - A kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off - Google Patents
A kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off Download PDFInfo
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- CN106049253B CN106049253B CN201610309834.XA CN201610309834A CN106049253B CN 106049253 B CN106049253 B CN 106049253B CN 201610309834 A CN201610309834 A CN 201610309834A CN 106049253 B CN106049253 B CN 106049253B
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- resistance
- shape steel
- steel plate
- slot shape
- opening slot
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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
-
- 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
Abstract
The present invention relates to a kind of construction methods for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off, and belong to bridge structure technical field.The present invention includes opening slot shape steel plate, resistance to plucking bolt, docking nut and peg (or anchor bar).Weld stud (or anchor bar) on the plate outer side of opening slot shape steel plate, it is securely connected on web plate adjacent with concrete simply supported beam bridge, resistance to plucking bolt is penetrated from two opening slot shape steel plates respectively, and the docking nut for tightening connection resistance to plucking bolt completes resistance to plucking connection, wherein there are a fixed gaps between the head of resistance to plucking bolt and opening slot shape steel plate, allow adjacent longitudinally to generate certain Free Transform along bridge across girder, when the longitudinally opposed deformation between adjacent beam-ends is excessive, the head of resistance to plucking bolt is contacted with opening slot shape steel plate, uplift effect initially forms, the construction can prevent freely-supported bridge girder from falling off from bearing at this time.The present invention's prevents the construction reasonable stress that reinforced concrete simple-supported beam bridge falls off, materials to be easy, and simple structure is easy for construction, economical and practical.
Description
Technical field
The present invention is a kind of longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off, and is applied in bridge structure
The mutual drawknot of girder beam-ends, belongs to bridge structure field.
Background technology
For rc beam bridge using hole as unit, the respective independent stress of adjacent bridge opening is suitable for medium and small span.Its advantages of
It is simple in structure, it is convenient to set up, and can lower cost, shorten the construction period, while be readily designed to the assembled structure of various standard spans
Part, therefore be used widely in China.But China is that earthquake-prone countries, especially North China, northwest, southwest three are big
Seismically active zone shakes off the example of beam destruction with having reinforced concrete simple-supported beam bridge, falls beam destruction and is bound to cause serious friendship
It is logical to interrupt, such as Wenchuan earthquake in 2008, it repairs extremely difficult after shake, brings about great losses to disaster area.In order to improve steel
The girder falling ability of reinforced concrete simply supported girder bridge, while the global design scheme of bridge structure is not influenced, it needs in adjacent bridge
Longitudinal connecting member is installed, main purpose is to increase girder falling energy of the bridge deck when bearing geological process in the owner's beam web of face
Power, to the globality and fastness of reinforcing steel bar concrete simple bridge.
Invention content
The present invention proposes a kind of be arranged prevents girder on the adjacent beam-ends girder web plate of reinforced concrete simple-supported beam bridge
The longitudinal connecting structure to fall off, for solving the problems, such as that existing reinforced concrete simple-supported beam bridge girder falling ability is weak.Described is anti-
The longitudinal connecting structure that only reinforced concrete simple-supported beam bridge falls off, mechanical concept is clear, on the one hand provides enough horizontal pulls,
Constrain the adjacent relative longitudinal displacement across girder, the generation of restrainer accident, on the other hand, do not constrain it is adjacent across girder due to
Longitudinally opposed deformation caused by concrete shrinkage and creep and temperature effect avoids causing additional stress inside girder, construction
Simply, easy for construction, it is economical and practical, it is easy to accomplish.
Technical scheme is as follows：
A kind of longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off of the present invention is used for stiffener coagulation
In native simply supported girder bridge adjacent two across it is longitudinally connected, improve girder falling ability, including opening slot shape steel plate 1, resistance to plucking bolt 2, right
Connect nut 3 and peg (or anchor bar) 4；It is characterized in that：The opening slot shape steel plate 1 is longitudinally arranged along bridge in adjacent
Beam-ends girder web plate both sides, the upper peg (or anchor bar) 4 by being welded on its outer surface are attached with girder web plate.
The preformed hole in opening slot shape steel plate 1, resistance to plucking bolt 2 penetrate the hole and fix, it is adjacent across resistance to plucking bolt 2 between using docking spiral shell
Cap 3 is fastenedly connected；The opening slot shape steel plate 1 is prefabricated in the factory molding, is U-shaped section, is welded in its plate outer surface
Peg (or anchor bar) 4 is connect, by embedded part embedding close to neutralization shaft position on the outside of adjacent beam-ends girder web plate；Described
Resistance to plucking bolt 2 passes through the reserved circular hole on opening slot shape steel plate 1, on the head of resistance to plucking bolt 2 and opening slot shape steel plate 1
Between there are a fixed gap, allow adjacent beam-ends girder that certain relative deformation longitudinally occurs along bridge, when longitudinally opposed deformation
When excessive, the head of resistance to plucking bolt 2 is contacted with opening slot shape steel plate 1, and uplift effect initially forms at this time.
A kind of concrete construction method of longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off of the present invention is：
A. the plate outer surface weld stud (or anchor bar) 4 for the opening slot shape steel plate 1 being prefabricated in the factory, by built-in fitting
It is embedded on the outside of beam web close to neutralization shaft position；
B. the concrete for pouring girder web plate completes opening slot shape steel plate 1 and girder abdomen by peg (or anchor bar) 4
The Shear connection of plate；
C., resistance to plucking bolt 2 is penetrated to the hole reserved in opening slot shape steel plate, on the head of resistance to plucking bolt 2 and trepanning groove profile
There are certain Free Transform spaces between the wing plate of steel plate 1, in the tail portion of resistance to plucking bolt 2 installation docking nut 3 and pass through torque
Spanner is fastened, and then adjacent across penetrating another resistance to plucking bolt 2, and is tightened among docking nut 3.
The present invention has following remarkable result compared with the existing technology：
(1) resistance to plucking bolt connects the girder of the adjacent beam-ends of reinforced concrete simple-supported beam bridge, effectively prevents in earthquake
Beam destruction is fallen under effect；(2) resistance to plucking bolt can longitudinally occur certain free to slide along bridge, will not be to bridge deck due to coagulation
Linear deformation caused by native shrinkage and creep or temperature effect generates constraint.(3) tectonic dynamics definite conception, according to seismic force lotus
The anti-pulling capacity of longitudinally connected requirement can be obtained by carrying incentive mode, and then determine required resistance to plucking bolt and docking nut
Diameter and quantity, reasonable stress, materials be easy, simple structure is easy for construction, economical and practical.
Description of the drawings
Fig. 1 is the overall schematic of the present invention, and Fig. 2 is the structural map of longitudinal connecting member.
Fig. 3 is the sectional view of Fig. 1 for indicating each component relativeness.
In figure：1-opening slot shape steel plate；2-resistance to plucking bolts；3-docking nuts；4-pegs (or anchor bar).
Specific implementation mode
Below in conjunction with attached drawing, the structure of the present invention, work progress are further described as follows.
As shown in Figure 1, the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off of the present invention includes opening slot
Shape steel plate 1, resistance to plucking bolt 2, docking nut 3 and peg (or anchor bar) 4, wherein opening slot shape steel plate 1 is along bridge longitudinal direction cloth
Be placed in adjacent across girder web plate both sides, by be welded on the upper peg (or anchor bar) 4 of its outer surface and girder web plate into
Row connection.
As shown in Fig. 2, the opening slot shape steel plate 1 makes in factory, for the U-shaped section of the preformed hole on wing plate, resist
It pulls out bolt 2 and penetrates the hole and fix, it is adjacent to be fastenedly connected using docking nuts 3 across two resistance to plucking bolts 2；
As shown in Fig. 2, in its plate outer surface weld stud (or anchor bar) 4, by method and the girder abdomen of built-in fitting
Board concrete connects.Resistance to plucking bolt 2 pass through opening slot shape steel plate 1 on reserved circular hole, the head of resistance to plucking bolt 2 with open
One fixed gap is set between hole slot shape steel plate 1, allows adjacent beam-ends girder that certain Free Transform longitudinally occurs along bridge, works as phase
When longitudinally opposed deformation between adjacent beam-ends girder is excessive, the head of resistance to plucking bolt 2 is contacted with opening slot shape steel plate 1, is resisted at this time
The effect of pulling out initially forms.
The present invention construction method be：
The construction of the present invention for preventing concrete simply supported beam bridge from longitudinally falling off, construction method are as follows：In factory's system
The plate outer surface weld stud (or anchor bar) 4 of the opening slot shape steel plate 1 of work completes opening slot by built-in fitting construction method
The connection of shape steel plate 1 and girder web plate；Resistance to plucking bolt 2 is penetrated to the hole reserved in opening slot shape steel plate 1, in resistance to plucking bolt 2
Head and the wing plate of opening slot shape steel plate 1 between there are a fixed gap, the tail portion of resistance to plucking bolt 2 installation docking nut 3 simultaneously
Fastened by torque wrench, then adjacent across penetrating another resistance to plucking bolt 2, and be tightened in docking nut 3 it
In.
The present invention provides a kind of longitudinal connecting structures for preventing reinforced concrete simple-supported beam bridge from falling off, and are used for stiffener
Concrete simply supported beam bridge abutting end it is longitudinally connected, improve girder falling ability, be applicable not only to simply supported girder bridge, be also adapted to reinforcing bar
The mutual drawknot of the adjacent beam-ends of concrete continuous girder bridge side bearing.The tectonic dynamics definite conception, reasonable stress, materials are easy,
Simple structure, it is easy for construction, it is economical and practical.
Claims (1)
1. a kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off, the construction includes opening
Hole slot shape steel plate, resistance to plucking bolt, docking nut and peg or anchor bar；The opening slot shape steel plate along bridge be longitudinally arranged in
Girder web plate both sides are connected by the peg or anchor bar that are welded on opening slot shape steel plate outer surface with girder web plate
It connects, the preformed hole in opening slot shape steel plate, resistance to plucking bolt penetrates the hole and fixes, adjacent to use docking nut across two resistance to plucking bolts
It is fastenedly connected；The opening slot shape steel plate is prefabricated in the factory molding, is U-shaped section, in its plate outer surface weld stud
Nail or anchor bar, are connect by the method for built-in fitting with girder web plate concrete；The resistance to plucking bolt passes through opening slot shape steel plate
On reserved circular hole allow adjacent beam-ends there are a fixed gap between the head of resistance to plucking bolt and opening slot shape steel plate
It is longitudinal that certain Free Transform occurs, when the longitudinally opposed deformation between adjacent beam-ends is excessive, the head of resistance to plucking bolt with open
Hole slot shape steel plate contacts, and uplift effect initially forms, this construction can prevent reinforced concrete simple-supported beam bridge from falling off；
It is characterized in that, the construction method of the construction includes the following steps：
A. the plate outer surface weld stud or anchor bar for the opening slot shape steel plate being prefabricated in the factory, by embedded part embedding in beam
Web outside is close to neutralization shaft position；
B. the concrete for pouring girder completes opening slot shape steel plate and adjacent beam-ends girder web plate by peg or anchor bar
Shear connection；
C., resistance to plucking bolt is penetrated to the hole reserved in opening slot shape steel plate, on the head of resistance to plucking bolt and opening slot shape steel plate
There are a fixed gaps between wing plate, are fastened in the tail portion of resistance to plucking bolt installation docking nut and by torque wrench, then
Adjacent across penetrating another resistance to plucking bolt, and it is tightened among docking nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309834.XA CN106049253B (en) | 2016-05-11 | 2016-05-11 | A kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610309834.XA CN106049253B (en) | 2016-05-11 | 2016-05-11 | A kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off |
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| Publication Number | Publication Date |
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| CN106049253A CN106049253A (en) | 2016-10-26 |
| CN106049253B true CN106049253B (en) | 2018-10-02 |
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| CN201610309834.XA Active CN106049253B (en) | 2016-05-11 | 2016-05-11 | A kind of construction method for the longitudinal connecting structure for preventing reinforced concrete simple-supported beam bridge from falling off |
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| CN109868835A (en) * | 2017-12-01 | 2019-06-11 | 范新华 | Automatic vending machine anti-tipping apparatus |
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| JP3122612B2 (en) * | 1995-06-08 | 2001-01-09 | 首都高速道路公団 | Falling bridge prevention device |
| CN103255704B (en) * | 2013-05-28 | 2015-06-03 | 招商局重庆交通科研设计院有限公司 | Steel damper anti-collision and anti-girder-dropping device |
| CN203593949U (en) * | 2013-12-16 | 2014-05-14 | 魏新胜 | Multifunctional anti-seismic beam-falling-off prevention device |
| CN204162991U (en) * | 2014-07-03 | 2015-02-18 | 同济大学 | Combined anti-fall girder apparatus |
| CN204435205U (en) * | 2015-02-06 | 2015-07-01 | 衡水中交信德工程橡塑有限公司 | The anti-fall anticollision device, collision-prevention device of a kind of bridge beam body |
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