CN113186795A - Segmental precast concrete beam chord arch bridge - Google Patents
Segmental precast concrete beam chord arch bridge Download PDFInfo
- Publication number
- CN113186795A CN113186795A CN202110420473.7A CN202110420473A CN113186795A CN 113186795 A CN113186795 A CN 113186795A CN 202110420473 A CN202110420473 A CN 202110420473A CN 113186795 A CN113186795 A CN 113186795A
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- Prior art keywords
- arch bridge
- bridge
- precast concrete
- arch
- pier
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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
- E01D4/00—Arch-type bridges
-
- 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
Abstract
The invention provides a segmental precast concrete string arch bridge, which comprises an arch bridge body in an arc structure, wherein the arch bridge body is formed by splicing a plurality of arch bridge sections in the arc structure, two sides of the arch bridge body in the length direction are respectively provided with a pier, a plurality of horizontal steel bar inhaul cables which are arranged in parallel are arranged below the arch bridge body along the length direction, the steel bar inhaul cables are in a tensioned state, two ends of each steel bar inhaul cable are fixedly connected to the piers, a plurality of vertical supporting rods are arranged on each steel bar inhaul cable along the length direction, and the top ends of the supporting rods are positioned at the splicing positions of the arch bridge sections. Compared with the traditional arch bridge, the arch bridge provided by the invention is directly spliced and installed on site, and the cost is low. Support arch bridge body downside through the bracing piece to pass through the reinforcing bar cable with strength and transmit to the pier, effectively overcome big span arch bridge because of the unable not enough problem of holding power that causes of setting up the pier in middle part, compare in traditional arch bridge durable more.
Description
Technical Field
The invention belongs to the technical field of assembled bridges, and relates to a segmental precast concrete beam string arch bridge.
Background
The arch bridge is the most common bridge type in China, has many types and large quantity, is the crown of various bridge types, particularly a highway bridge, and according to incomplete statistics, 7 percent of highway bridges in China are the arch bridges.
The arch bridge is a bridge with an arch as a main bearing component of the structure in a vertical plane, the section of an upper arch ring of the arch bridge is only subjected to axial pressure without bending moment and shearing force, and the arch bridge has the advantages of large spanning capacity, good durability, attractive appearance, simple structure, easiness in mastering and the like.
At present, arch bridges can be divided into stone arch bridges, concrete arch bridges and steel arch bridges according to different building materials. The stone arch bridge has the advantages of heavy self weight, limited spanning capability, more labor force for stone exploitation and river building processing, and longer construction period.
The concrete arch bridge needs on-site mould making, steel bar binding and concrete pouring, the construction period is long, the construction quality is difficult to guarantee, and the technical requirements on-site construction workers are very high. The steel arch bridge has complex structure, high requirement on the foundation, high manufacturing cost and high maintenance cost. In addition, the stone arch bridge and the concrete arch bridge have poor seismic performance and are usually irreversibly damaged under the action of seismic force.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a segmental precast concrete tensioned-chord arch bridge.
Therefore, the invention adopts the following technical scheme:
the utility model provides a string arched bridge is opened to segmental precast concrete, is including the arched bridge body that is the arc structure, the arched bridge body comprises a plurality of arched bridge section concatenations that are the arc structure, and arched bridge body length direction's both sides respectively are equipped with a pier, and the below of arched bridge body is equipped with many reinforcing bar guys that are level and mutual parallel arrangement along its length direction, the reinforcing bar guy is taut state, and reinforcing bar guy's both ends fixed connection is equipped with a plurality of bracing pieces that are vertical setting on the reinforcing bar guy along its length direction on the pier, the top of bracing piece is located arched bridge section concatenation department.
Furthermore, one end of the arch bridge section is provided with a rectangular plug board, and the other end of the arch bridge section is provided with a socket matched with the plug board.
Furthermore, two ends of the arch bridge section are respectively provided with a connecting plate which is vertically arranged, a first through hole is formed in each connecting plate, a second through hole is formed in the top end of each supporting rod, a bolt is arranged in each second through hole and penetrates through each first through hole, and a nut is sleeved on each bolt.
Further, the bottom of bracing piece is equipped with the sleeve, the sleeve cover is located on the reinforcing bar cable.
Furthermore, a rope conveying hole penetrating through the bridge pier is formed in the bridge pier, the steel bar inhaul cable penetrates through the rope penetrating hole, and two ends of the steel bar inhaul cable are respectively provided with a clamping block.
Furthermore, a horizontally arranged bridge deck is arranged above the arch bridge body, and a horizontal filling block is arranged between the arch bridge body and the bridge deck.
Furthermore, a plurality of baffles are arranged on the upper surface of the arch bridge body along the length direction of the arch bridge body, the top ends of the baffles are located on the same horizontal plane, lattice barriers are formed among the baffles, and the filling blocks are located in the lattice barriers.
The invention has the beneficial effects that:
(1) compared with the traditional arch bridge, the arch bridge body formed by prefabricated arch bridge sections is directly spliced and installed on site, so that the construction period is short, the labor is saved, and the cost is low.
(2) Set up the reinforcing bar cable at arched bridge body downside, form and open the chord force to set up the bracing piece between reinforcing bar cable and arched bridge body, support arched bridge body downside through the bracing piece, and pass through the reinforcing bar cable with strength and transmit to the pier, effectively overcome big span arched bridge because of the middle part can't set up the not enough problem of holding power that the pier caused, compare in traditional arched bridge durable more sturdy.
(3) The bridge deck that is the level setting sets up is set up on arched bridge surface, compares in the arc bridge deck, and the people car of being convenient for is current.
Drawings
FIG. 1 is a front view of the present invention in a schematic configuration;
FIG. 2 is a schematic top view of the structure of the present invention;
FIG. 3 is an enlarged view of a portion A of FIG. 1;
in the figure, 1-arch bridge body, 101-arch bridge section, 102-inserting plate, 103-inserting opening, 2-pier, 3-steel cable, 4-rope threading hole, 5-clamping block, 6-supporting rod, 7-sleeve, 8-connecting plate, 9-first through hole, 10-second through hole, 11-bolt, 12-nut, 13-bridge deck, 14-filling block, 15-baffle plate and 16-lattice stop.
Detailed Description
The invention is described in detail below with reference to the accompanying drawings:
as shown in fig. 1-3, a segmental precast concrete tension chord arch bridge comprises an arch bridge body 1 in an arc structure, wherein the arch bridge body 1 is formed by splicing a plurality of arch bridge sections 101 in the arc structure, the specific number of the arch bridge sections 101 can be determined according to the length of the arch bridge body 1, specifically, one end of each arch bridge section 101 is provided with a rectangular inserting plate 102, the other end of each arch bridge section 101 is provided with an inserting hole 103 matched with the inserting plate 102, the inserting plates 102 are inserted into the inserting holes 103 of the adjacent arch bridge sections 101 during installation to complete the splicing between the arch bridge sections 101, two sides of each arch bridge body 1 in the length direction are respectively provided with a pier 2, and the piers 2 are fixed on river banks at two sides and used for installing the arch bridge body 1.
A plurality of steel bar inhaul cables 3 which are arranged horizontally and in parallel are arranged below the arch bridge body 1 along the length direction, all the steel bar inhaul cables 3 are positioned in the same horizontal plane, the steel bar inhaul cables 3 are in a tensioning state, the number of the steel bar inhaul cables 3 is determined by the width of the arch bridge body 1, two ends of each steel bar inhaul cable 3 are fixedly connected to piers, specifically, rope conveying holes 4 penetrating through the piers 2 are formed in the piers 2, the steel bar inhaul cables 3 penetrate through the rope penetrating holes 4, two ends of each steel bar inhaul cable 3 are respectively provided with a clamping block 5, each clamping block 5 is made of metal materials, after the steel bar inhaul cables 3 penetrate through the rope penetrating holes 4, the clamping blocks 5 are welded at two ends of each steel bar inhaul cable 3, a plurality of support rods 6 which are arranged vertically are arranged on the steel bar inhaul cables 3 along the length direction, the support rods 6 are used for supporting the arch bridge body 1, so that the arch bridge body receives supporting force in the vertical direction, and the problem that the span is overlarge, inconvenient pier of erectting in middle part, and then the not enough problem of middle part holding power that produces, the number of bracing piece 6 is corresponding with hunch bridge section 101, the top of bracing piece 6 is located hunch bridge section 101's concatenation department, it can be to effectively offsetting the stress of hunch bridge section 101's concatenation department, specifically, the bottom of bracing piece 6 is equipped with sleeve 7, sleeve 7 cover is located on reinforcing bar cable 3, the both ends of encircleing bridge section 101 respectively are equipped with a connecting plate 8 that is vertical setting, be equipped with first through-hole 9 on the connecting plate 8, the top of bracing piece 6 is equipped with second through-hole 10, be equipped with bolt 11 in the second through-hole 10, bolt 11 passes from first through-hole 9, it is equipped with nut 12 still to overlap on the bolt.
The top of encircleing the bridge body 1 is equipped with the bridge floor 13 that is the level setting, is equipped with filling block 14 between encircleing the bridge body 1 and the bridge floor 13, and the filling block is used for filling and leveling curved 1 surfaces of encircleing the bridge body to the laying of bridge floor 13 specifically, the upper surface of encircleing the bridge body 1 is equipped with a plurality of baffles 15 along its length direction, and the top of baffle 15 is located same horizontal plane, forms check between the baffle 15 and keeps off 16, and filling block 14 is located check and keeps off 16.
When the bridge is installed, firstly, the bridge piers 2 are installed, the arch bridge body 1 can be installed after the bridge piers 2 are installed, after all the arch bridge sections 101 are spliced, the top ends of the supporting rods 6 are connected with the connecting plates 8 at the splicing positions of the arch bridge sections 101, then, the steel cable 3 is installed, the steel cable 3 penetrates through the sleeves 7 at the bottom ends of the supporting rods 6 during installation, the steel cable 3 is tensioned by adopting the penetrating jacks, then, the clamping blocks 5 are welded and fixed at the two ends of the steel cable 3, the baffle 15 can be installed after the arch bridge body 1 is installed, concrete is poured into the lattice blocks 16 to form the filling blocks 14 after the installation is completed, and finally, the bridge deck 13 is paved on the upper surfaces of the filling blocks 14.
Claims (7)
1. The utility model provides a string arched bridge is opened to segmental precast concrete, a serial communication port, including the arched bridge body that is the arc structure, the arched bridge body comprises a plurality of arched bridge section concatenations that are the arc structure, and arched bridge body length direction's both sides respectively are equipped with a pier, and the below of arched bridge body is equipped with many reinforcing bar guys that are level and mutual parallel arrangement along its length direction, the reinforcing bar guy is taut state, and reinforcing bar guy's both ends fixed connection is equipped with a plurality of bracing pieces that are vertical setting on the reinforcing bar guy along its length direction on the pier, the top of bracing piece is located arched bridge section concatenation department.
2. A segmental precast concrete tensioned string arch bridge according to claim 1, characterized in that one end of the arch bridge segment is provided with a rectangular inserting plate and the other end is provided with a socket matched with the inserting plate.
3. A segmental precast concrete tensioned string arch bridge according to claim 1, characterized in that two ends of the arch bridge segment are respectively provided with a vertically arranged connecting plate, the connecting plates are provided with first through holes, the top ends of the supporting rods are provided with second through holes, bolts are arranged in the second through holes, the bolts pass through the first through holes, and nuts are sleeved on the bolts.
4. A segmental precast concrete tensioned string arch bridge according to claim 1, characterized in that the bottom ends of the supporting rods are provided with sleeves which are sleeved on steel cables.
5. A segmental precast concrete tensioned string arch bridge according to claim 1, wherein the bridge pier is provided with a rope passing hole penetrating through the bridge pier, the steel cable passes through the rope passing hole, and both ends of the steel cable are respectively provided with a clamping block.
6. A segmental precast concrete string arch bridge according to claim 1, wherein a horizontally arranged bridge deck is provided above the arch bridge body, and filling blocks are provided between the arch bridge body and the bridge deck.
7. A segmental precast concrete tensioned string arch bridge according to claim 1, characterized in that the upper surface of the arch bridge body is provided with a plurality of baffles along the length direction thereof, the top ends of the baffles are positioned on the same horizontal plane, the baffles form a lattice, and the horizontal filling blocks are positioned in the lattice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110420473.7A CN113186795A (en) | 2021-04-19 | 2021-04-19 | Segmental precast concrete beam chord arch bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110420473.7A CN113186795A (en) | 2021-04-19 | 2021-04-19 | Segmental precast concrete beam chord arch bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113186795A true CN113186795A (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110420473.7A Pending CN113186795A (en) | 2021-04-19 | 2021-04-19 | Segmental precast concrete beam chord arch bridge |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2372943A1 (en) * | 2002-02-25 | 2003-08-25 | James Joseph Drew | Arched structures and method for the construction of same |
| EP2248948A1 (en) * | 2009-05-06 | 2010-11-10 | The European Union, represented by the European Commission | Supporting arch structure construction method |
| CN102493327A (en) * | 2011-12-31 | 2012-06-13 | 东莞理工学院 | Reinforced portable integral prefabricated masonry arch bridge |
| CN203270436U (en) * | 2013-05-28 | 2013-11-06 | 东莞理工学院 | Light anti-bending supporting member based on FRP and flexible arch body |
| CN205443900U (en) * | 2016-01-13 | 2016-08-10 | 广西大学 | Multiple spot restraint and distributed tied arch bridge in arch rib face |
| CN208632940U (en) * | 2018-08-08 | 2019-03-22 | 白婷婷 | A kind of assembling type steel structure arch bridge |
| CN111455876A (en) * | 2020-04-03 | 2020-07-28 | 商丘市豫东公路勘察设计有限公司 | Reinforcing structure and method for small-span masonry arch bridge |
-
2021
- 2021-04-19 CN CN202110420473.7A patent/CN113186795A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2372943A1 (en) * | 2002-02-25 | 2003-08-25 | James Joseph Drew | Arched structures and method for the construction of same |
| EP2248948A1 (en) * | 2009-05-06 | 2010-11-10 | The European Union, represented by the European Commission | Supporting arch structure construction method |
| CN102493327A (en) * | 2011-12-31 | 2012-06-13 | 东莞理工学院 | Reinforced portable integral prefabricated masonry arch bridge |
| CN203270436U (en) * | 2013-05-28 | 2013-11-06 | 东莞理工学院 | Light anti-bending supporting member based on FRP and flexible arch body |
| CN205443900U (en) * | 2016-01-13 | 2016-08-10 | 广西大学 | Multiple spot restraint and distributed tied arch bridge in arch rib face |
| CN208632940U (en) * | 2018-08-08 | 2019-03-22 | 白婷婷 | A kind of assembling type steel structure arch bridge |
| CN111455876A (en) * | 2020-04-03 | 2020-07-28 | 商丘市豫东公路勘察设计有限公司 | Reinforcing structure and method for small-span masonry arch bridge |
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| PB01 | Publication | ||
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Application publication date: 20210730 |
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| RJ01 | Rejection of invention patent application after publication |