CN114214975B - Repair method for bridge pier and protection structure of bridge pier - Google Patents
Repair method for bridge pier and protection structure of bridge pier Download PDFInfo
- Publication number
- CN114214975B CN114214975B CN202210046245.2A CN202210046245A CN114214975B CN 114214975 B CN114214975 B CN 114214975B CN 202210046245 A CN202210046245 A CN 202210046245A CN 114214975 B CN114214975 B CN 114214975B
- Authority
- CN
- China
- Prior art keywords
- water
- permeable
- layer
- filler
- pier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000008439 repair process Effects 0.000 title claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 221
- 239000000945 filler Substances 0.000 claims abstract description 62
- 238000012856 packing Methods 0.000 claims abstract description 47
- 239000002245 particle Substances 0.000 claims abstract description 36
- 239000004575 stone Substances 0.000 claims abstract description 29
- 239000004567 concrete Substances 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 26
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 4
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 239000010426 asphalt Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 239000012466 permeate Substances 0.000 abstract description 12
- 230000001788 irregular Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005406 washing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 97
- 238000011010 flushing procedure Methods 0.000 description 9
- 238000009991 scouring Methods 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000001771 impaired effect Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- -1 polypropylene Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/06—Placing concrete under water
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Bridges Or Land Bridges (AREA)
- Revetment (AREA)
Abstract
The application discloses a repairing method of a pier, which comprises the following steps: confirming the hollowed-out part in the foundation bed; pouring underwater concrete to fill the hollowed-out part and filling crushed stone blocks to level the foundation bed; the water permeable block is arranged around the bridge pier to form a water permeable layer, water seepage holes are formed in the water permeable block, and the water seepage holes are used for refining and splitting the flowing water flow so as to slow down the impact force of the water flow; a gap is arranged between the permeable layer and the pier; and filling filler in the gap between the bridge pier and the permeable layer to form a filler layer, wherein the filler layer is formed by stacking a plurality of layers of filler with different particle sizes. The packing layer avoids directly washing away the pier, and the clearance between packing and the packing has formed a plurality of irregular rivers passageway, reduces the impact force to the pier, and the permeable layer is for enclosing to locate around the packing layer, can effectively protect the packing in the packing layer, prevents that it from being washed away by rivers and runs off, contains a plurality of holes that permeate water in the piece that permeate water, prevents the production of horseshoe vortex.
Description
Technical Field
The application belongs to the technical field of bridge protection, and particularly relates to a repairing method of a bridge pier and a protection structure of the bridge pier.
Background
Local scour exists near the cross-sea or cross-river bridge, and is an important factor causing bridge damage. Local flushing is generally responsible for three reasons: (1) The bridge pier blocks water to increase the surrounding flow rate, namely the cross section area of water is reduced when water flow encounters an obstacle, so that the local flow rate is increased, and sediment on the bed surface is scoured to form a scour pit; (2) The downward flushing water flow undercuts the bed surface, mainly refers to that the forward water flow forms the downward flushing water flow after striking the bridge pier, and has a strong undercut effect on the bed surface; (3) The horseshoe-shaped vortex scouring mainly refers to horseshoe-shaped vortex formed when water flows bypass an obstacle, and partial sediment around the pier is rolled away.
In the prior art, the local scouring protection measures of the bridge pier are mainly divided into two types: (1) The active protection reduces the scouring energy of the water flow to the bridge pier, namely, reduces the downward flow and the horseshoe-shaped vortex in the water flow scouring process, and generally adopts measures such as expanding the basic plane of the bridge pier or arranging the guard feet to reduce the scouring energy of the water flow. (2) Passive protection improves the scour protection ability of the bed near the pier, usually by throwing stones or twisting blocks around the pier foundation, in an attempt to improve the scour protection ability of the pier.
For some bridges with important cultural relics, such as a Guangji bridge, when the bridges are protected and repaired, the reversibility principle is to be followed, namely, the original bridge pier basic form and structure of the reconstructed or expanded protective structure should not be changed, the reconstructed or expanded protective structure is revocable, the bridge piers are not damaged after the revocable, and the possibility is left for the repair work of the bridge piers at the future time.
Therefore, a method is needed that is safe and reliable without compromising the basic form and structure of the original pier.
Disclosure of Invention
The application aims to solve the technical problems and provides a repairing method of piers.
In order to solve the problems, the application is realized according to the following technical scheme:
in a first aspect, the present application provides a repairing method for a pier, comprising the steps of:
s1, cleaning sundries outside the bridge pier to expose a foundation bed of the bridge pier, and confirming a hollowed-out part in the foundation bed;
s2, pouring underwater concrete to fill the hollowed-out part, and filling crushed stone blocks to level the foundation bed;
s3, arranging water permeable blocks around the bridge piers to form a water permeable layer, wherein the water permeable blocks are made of water permeable materials, water permeable holes are formed in the water permeable blocks, and the water permeable holes are used for refining and splitting water flowing through so as to slow down the impact force of the water flow; a gap is arranged between the permeable layer and the pier;
and S4, filling filler in the gap between the bridge pier and the permeable layer to form a filler layer, wherein the filler layer is formed by stacking a plurality of layers of filler with different particle sizes.
With reference to the first aspect, the present application further provides an implementation manner of the 1 st aspect, and in step S3, the method further includes the following steps:
s301, laying a stone-blocking reinforcing mesh between two adjacent permeable blocks on the same straight line;
s302, setting a stone-blocking precast block between two adjacent permeable blocks with included angles.
With reference to the first aspect, the application further provides an implementation manner of the 2 nd aspect, the water permeable block is a prefabricated member, and the water permeable block is made of one of water permeable concrete, water permeable asphalt, polyurethane water permeable material, carbon fiber water permeable material, PP water permeable material and EAU water permeable material.
With reference to the first aspect, the present application further provides a 3 rd implementation manner of the first aspect, in step S4, the height of the filler layer is lower than the height of the water permeable layer, and the particle size of the filler in the filler layer increases sequentially from bottom to top.
With reference to the first aspect, the present application also provides the 4 th embodiment of the first aspect, wherein the particle size of the filler at the lowest layer ranges from 200mm to 300mm;
the particle size of the uppermost filler ranges from 500mm to 600mm.
With reference to the first aspect, the present application further provides a 5 th implementation manner of the first aspect, and in step S4, the method further includes the following steps:
s401, after each layer of filler is paved, a civil grid is paved above the layer of filler, and then the next layer of filler is paved.
With reference to the first aspect, the present application further provides a 6 th implementation manner of the first aspect, further including the following steps:
s5, arranging water diversion piles on the water permeable blocks at the upstream and the two sides, wherein the water diversion piles are arranged at the outer sides of the water permeable blocks.
In a second aspect, the present application provides a pier protecting structure, including:
the permeable layer is arranged around the bridge pier in a surrounding mode, a plurality of water seepage holes are formed in the permeable layer, and the water seepage holes are used for refining and splitting flowing water flow so as to slow down the impact force of the water flow;
the packing layer, the packing layer is located between permeable layer and the pier, the packing layer is used for resisting the rivers after the reposition of redundant personnel, the packing layer is piled up by the block stone of a plurality of particle diameters and is formed, the particle diameter of block stone reduces from last to lower in proper order.
With reference to the second aspect, the present application further provides an embodiment 1 of the first aspect, the water permeable layer includes:
the stone blocking steel bar net is arranged between two adjacent permeable blocks on the same straight line and is laid on the outer surfaces of the permeable blocks;
the stone-blocking precast block is arranged between two adjacent permeable blocks with included angles and is connected with the bottom plate; and
A water permeable block, the water permeable block comprising:
the water diversion pile comprises a bottom plate, wherein a water diversion pile mounting hole is formed in the bottom plate and is used for mounting a water diversion pile, a spiral rib is arranged on the inner ring of the water diversion pile mounting hole and used for fastening the mounting of the water diversion pile, the water diversion pile is arranged on one side of a vertical plate and used for changing flowing water into wake flow, a metal layer is sleeved outside the water diversion pile and used for improving the impact strength of the water diversion pile;
the vertical plate is arranged in the center of the bottom plate, and the vertical plate and the bottom plate form a T-shaped structure;
the coupling assembling, coupling assembling is used for linking to each other a plurality of water permeable blocks, coupling assembling includes: the hanging ring is arranged at the tops of the bottom plate and the vertical plate; the pull rings are arranged on two sides of the bottom plate and the vertical plate; the connecting ring is used for connecting the hanging ring or the pull ring.
With reference to the second aspect, the present application further provides an implementation manner of the second aspect, wherein the filler layer has a height lower than that of the water permeable layer, and the filler layer includes:
the stone filling layer is formed by stacking a plurality of stone blocks with particle sizes;
and the civil grid is arranged between the two continuous stone filling layers.
Compared with the prior art, the application has the beneficial effects that:
1. according to the embodiment of the application, the filler layers with different particle sizes are arranged for water flows with different flow rates, so that the impact force of the water flows can be well slowed down, the bridge pier is prevented from being directly washed, a plurality of irregular water flow channels are formed in gaps between the fillers, one water flow with larger impact force is split into a plurality of water flows with smaller impact force, and the impact force on the bridge pier is reduced.
2. In the embodiment of the application, the permeable layer surrounded by the permeable block is surrounded by the packing layer, so that the packing in the packing layer can be effectively protected from being washed away and lost by water flow, the permeable block is made of permeable material, and a plurality of permeable holes are formed in the permeable block, so that when the water flow washes the surface of the permeable block, the impact force of the water flow is prevented from being fully acted on the permeable block, the horseshoe vortex is prevented from being generated, and the water permeation damage caused by overlarge stress in the permeable block or the connection between the connected permeable blocks is prevented from being damaged, so that the permeable block is washed away and lost.
3. In the embodiment of the application, based on the principle of repairing ancient cultural relics, the structure of repairing the bridge pier is based on the basic style and structure of the bridge pier, and a protective layer is arranged outside the bridge pier, so that any structural increase is not directly carried out on the bridge pier, and the possibility is left for later repairing.
Drawings
The application is described in further detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic structural view of a bridge pier protecting structure according to the present application;
fig. 2 is an enlarged sectional view of a guard structure of the pier of the present application;
FIG. 3 is a top sectional view showing the bridge pier protecting structure of the present application
FIG. 4 is a schematic view of the structure of the connection block of the present application;
fig. 5 is a schematic structural view of the connection block and stone-blocking rebar grid of the present application;
FIG. 6 is a schematic view of the structure of the connection of the multiple connection blocks of the present application
In the figure:
1. bridge piers;
2. a water permeable block; 201. a bottom plate; 202. a riser; 203. spiral ribs; 204. a hanging ring; 205. a pull ring;
3. a stone filling layer; 4. stone blocks; 5. a ring beam; 6. a longitudinal beam; 7. a water diversion pile; 8. stone-blocking reinforcing steel bar net; 9. a stone-blocking precast block; 10. a civil grid;
Detailed Description
Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are illustrated in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The term "comprising" and variations thereof as used herein means open ended, i.e., "including but not limited to. The term "or" means "and/or" unless specifically stated otherwise. The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment. The term "another embodiment" means "at least one additional embodiment". The terms "first," "second," and the like, may refer to different or the same object. Other explicit and implicit definitions are also possible below. In the present embodiment, terms (e.g., "upper", "lower", "right", "left", "front", "rear", etc.) indicating directions are used as appropriate for easy understanding, and are for explanation, and these terms do not limit the present application.
In this embodiment, bridge piers of the Guangji bridge are taken as an illustration, and it should be understood that the present application is not limited to Guangji bridges, and other bridge repairing methods are all within the scope of the present application.
The Guangji bridge is an ancient bridge of nearly thousand years, consists of eighteen bridge piers and two bridge decks and has higher cultural relic value. Like other bridges, the Guangji bridge is also saturated with the damage caused by the local flushing of the river, the Guangji bridge is subjected to repeated repair work in history, and the influence of the local flushing of the river on the Guangji bridge is still serious nowadays.
Through field investigation, the bridge piers of the Guangji bridge are of a stone masonry structure, the bridge piers and bridge abutment have the damage phenomena of different degrees of bottom weed breeding, bottom hollowing, loose and falling of stone masonry mortar, cracking of the bridge piers, loose cement cushion blocks, flushing loss of the cement cushion blocks and the like, most of the damage phenomena are caused by local flushing of rivers, the damage conditions of the upstream and downstream of the bridge piers are different, and in general, the damage condition of the upstream of the bridge piers is more serious than the damage condition of the downstream of the bridge piers.
When repairing the Guangji bridge, the method is based on the 'four-preservation' maintenance principle of preserving original form, original structure, raw materials and original technology for ancient cultural relics. Aiming at the repairing of the Guangji bridge, the scheme is more particularly the three principles, namely, the principle of the original reality, the original reality of the Guangji bridge is maintained from four aspects of design, materials, process and environment, and the original building materials are used as much as possible and the original appearance is maintained; secondly, based on the readability principle, namely based on the age culture meaning expressed by the Guangji bridge, the method further repairs the Chinese character as a product of the age; thirdly, the reversibility principle is that the repaired extension structure and the improved structure should not damage the original basic form and structure, all structures added on the bridge pier for utilization, reinforcement or repair can be withdrawn, the bridge pier is not damaged after withdrawal, and the possibility is left for subsequent repair.
Example 1
The application provides a repairing method of a bridge pier 1, which comprises the following steps:
s1, cleaning sundries outside the bridge pier 1 to expose a foundation bed of the bridge pier 1, and confirming a hollowed-out part in the foundation bed;
s2, pouring underwater concrete to fill the hollowed-out part, and filling the crushed stone 4 to level the foundation bed;
s3, arranging water permeable blocks 2 around the bridge pier 1 to form a water permeable layer, wherein the water permeable blocks 2 are made of water permeable materials, water permeable holes are formed in the water permeable blocks 2, and the water permeable holes are used for refining and splitting water flowing through so as to slow down the impact force of the water flow; a gap is arranged between the permeable layer and the pier 1;
and S4, filling filler in the gap between the bridge pier 1 and the permeable layer to form a filler layer, wherein the filler layer is formed by stacking a plurality of layers of filler with different particle sizes.
Through setting gradually packing layer and permeable layer outside pier 1, wherein the packing layer is piled up by the packing that a plurality of layers particle diameter are different and forms, because the rivers velocity of flow that is located the river surface is highest generally, and along with the increase of river depth, the rivers velocity of flow slows down gradually, set up the packing layer that the particle diameter is different to the rivers of different velocity of flow, the impact force of slowing down the rivers that can be better, avoid directly washing away pier 1, and the clearance between packing and the packing has formed a plurality of irregular water flow channel, make the rivers reposition of redundant personnel that a stream impact force is great become the less rivers of a plurality of impact forces, reduce the impact force to pier 1. The permeable layer that the permeable block 2 encloses and establishes is enclosed around locating the packing layer, can effectively protect the packing in the packing layer, prevent that it from being erodeed by rivers and run off, and permeable block 2 is made by permeable material, contains a plurality of holes that permeate water in the permeable block 2, when rivers erode the surface of permeable block 2, avoid the impact force of rivers to fully act on permeable block 2, prevent horseshoe vortex's production, prevent to permeate water the excessive stress in the piece 2 and cause permeable block 2 impaired or make the connection between the continuous permeable block 2 impaired, make permeable block 2 erode and run off. The application is based on the repair principle of ancient cultural relics, the structure of the repaired pier 1 is based on the basic style and structure of the pier 1, and a protective layer is arranged outside the pier 1, so that any structural increase of the pier 1 is not directly carried out, and the possibility is left for the subsequent repair.
Step S1: and cleaning sundries outside the bridge pier 1 to expose the foundation bed of the bridge pier 1, and confirming the hollowed-out part in the foundation bed.
The bottom of the pier 1 is submerged in a river throughout the year, and when water flows through the pier 1, soil and stones flowing through the pier 1 are easily retained due to the fact that the surface of the pier 1 is not smooth, and the water is accumulated near the pier 1, and some aquatic plants and algae grow. Before repairing the bridge pier 1, the sundries need to be cleaned, so that a foundation bed at the bottom of the bridge pier 1 is exposed, constructors can observe and detect the hollowed-out part at the bottom of the bridge pier 1 conveniently, and a repairing scheme is implemented for the hollowed-out part.
Step S2: pouring underwater concrete to fill the hollowed out portion and filling the crushed stone 4 to level the foundation bed.
Because the bottom of the pier 1 is usually a deep water area, underwater concrete is poured by adopting a conduit method, the conduit is filled with concrete during pouring, the pipe orifice of the conduit is buried in the concrete, free surface concrete contacts with water, the corresponding conduit is removed along with the rising of the pouring height, and the concrete contacted with water is removed after pouring is finished. After pouring, the foundation bed is filled with the crushed stone 4 and leveled by tools such as a grader, so that the flatness of the foundation bed is within 50mm, the water permeable block 2 is convenient to install subsequently, water is prevented from entering the filling layer from the bottom of the water permeable block 2, and the filling of the filling layer is flushed and lost.
Step S3: the water permeable block 2 is arranged around the bridge pier 1 to form a water permeable layer, the water permeable block 2 is made of water permeable materials, water permeable holes are formed in the water permeable block 2, and the water permeable holes are used for refining and splitting water flowing through so as to slow down the impact force of the water flow; a gap is arranged between the permeable layer and the pier 1.
Be equipped with rings 204 and pull ring 205 on permeating water piece 2, through the cooperation of go-between and rings 204 and pull ring 205, can link to each other a plurality of permeating water pieces 2 and enclose and locate pier 1 and form permeable layer all around, permeate water piece 2 adopts permeable material prefabrication to form, permeable material can adopt permeable concrete, pitch that permeates water, polyurethane permeable material, carbon fiber permeable material, PP permeable material, EAU permeable material one of water. Because a plurality of holes that permeate water are contained in the piece 2 permeates water, when rivers wash the surface of the piece 2 that permeates water, avoid the impact force of rivers to all act on the piece 2 that permeates water, prevent the production of horseshoe vortex, prevent to permeate water the piece 2 that the too big stress of piece 2 that permeates water causes impaired and lose safeguard function.
In step S3, the method further comprises the steps of:
step S301: a stone-blocking reinforcing steel bar net 8 is laid between two adjacent permeable blocks 2 on the same straight line;
step S302: a stone-blocking precast block 9 is arranged between two adjacent permeable blocks 2 with included angles.
Because the cross section area of pier 1 is the polygon, the permeable layer that sets up outside pier 1 also is the polygon, because be equipped with the clearance between two adjacent permeable blocks 2, in the packing layer of inside is gone into in the clearance easily to rivers to weaken the reposition of redundant personnel effect of permeable layer. When two adjacent permeable blocks 2 are in the same straight line, the gap is smaller, and the gap is divided into a plurality of small holes by laying porous stone-blocking reinforcing steel bar meshes 8 on the permeable blocks 2, so that the flowing water can be split. When two adjacent water permeable blocks 2 have included angles, a larger gap is arranged between the two adjacent water permeable blocks 2, when water flows through, opposite pulling force is easily generated on the two adjacent water permeable blocks 2, so that a connecting ring or a hanging ring 204 or a pull ring 205 between the two adjacent water permeable blocks 2 which are connected with each other is broken, and therefore a stone-blocking precast block 9 is arranged between the two adjacent water permeable blocks 2 with included angles, water is prevented from flowing through the gap through the stone-blocking precast block 9, and water is guided to flow to the water permeable blocks 2 on two sides.
Step S4: and filling filler in the gap between the bridge pier 1 and the permeable layer to form a filler layer, wherein the filler layer is formed by stacking a plurality of layers of filler with different particle sizes.
The packing layer is formed by stacking a plurality of layers of packing with different particle sizes, the packing can be made of stone blocks, and the height of the packing layer is lower than that of the permeable layer, so that water flow is prevented from directly flushing the packing, and the packing is prevented from being flushed and lost. The particle size of the filler in the filler layer is sequentially increased from bottom to top, and the flow velocity of the water flow on the surface of the river is highest, and gradually slows down along with the increase of the depth of the river. Aiming at the upper-layer water flow, the water flow still has a larger flow velocity after passing through the water permeable block 2, and the water flow is directly blocked by arranging filler with larger particle size, wherein the particle size range of the filler at the uppermost layer is 450-550 mm, so that the flow velocity is reduced; for lower-layer water flow, the impact force to the filler layer is smaller after the water-permeable layer is passed through due to slower flow speed, and the particle size range of the filler at the lowest layer is 250-350 mm by arranging the filler with smaller particle size, so that the impact force to the water flow is further split. The packing layers with different particle sizes are arranged to reduce the impact force of water flow to different flow rates, so that the pier 1 is prevented from being flushed directly, a plurality of irregular water flow channels are formed in gaps between the packing layers, a water flow with larger impact force is split into a plurality of water flows with smaller impact force, and the impact force to the pier 1 is reduced.
In a preferred embodiment, the particle size of the lowermost filler is about 300mm and the particle size of the uppermost filler is about 500 mm.
The step S4 further includes the steps of:
s401: after each layer of packing is laid, a civil grid 10 is laid over that layer of packing, and then the next layer of packing is laid.
Because the particle sizes of two adjacent layers of fillers are different, larger gaps are easy to generate, the fillers are easy to loosen, and after one layer of filler is paved, the civil grid 10 is paved on the filler. The civil grid 10 is a two-dimensional grid or a three-dimensional grid screen with a certain height, which is formed by thermoplastic or mould pressing of high molecular polymers such as polypropylene, polyvinyl chloride and the like, and has uniform holes, so that the occlusion effect between fillers can be effectively improved, the bearing capacity of a filler layer is improved, and the fillers are prevented from moving.
The method also comprises the following steps:
step S5: water diversion piles 7 are arranged on the water permeable blocks 2 at the upstream and the two sides, and the water diversion piles 7 are arranged at the outer sides of the water permeable blocks 2.
Because the velocity of the upstream water flow is faster, the impact force generated by the upstream water flow is also larger, the outside of the water permeable block 2 is provided with a water diversion pile 7 mounting hole, a spiral rib 203 is arranged in the water diversion pile 7 mounting hole in a ring manner, and the spiral rib 203 can fasten the installation of the water diversion pile 7, so that the water diversion pile 7 can generate certain displacement to reduce the impact force of the water flow when bearing the impact. When water flows through the water diversion pile 7, the water diversion pile 7 can deviate the water flow impacting the water diversion pile 7, and wake flow is formed after the water diversion pile 7 is passed, so that turbulent intensity of vortex around the pier 1 can be effectively reduced, and scouring of the water flow to the pier 1 is reduced. If the water blocking effect of the water diversion pile 7 is enhanced, the water diversion pile can be heightened, thickened or sleeved with a steel pipe.
The other steps of the repair method of the bridge pier 1 according to the present embodiment are as described in the prior art.
Example 2
The present embodiment also provides a protection structure for the bridge pier 1, and the protection structure of the present embodiment is used in the protection method of embodiment 1.
As shown in fig. 1 to 6, the protection structure of the pier 1 according to the present embodiment includes a permeable layer and a filler layer, the permeable layer is disposed around the pier 1, and the permeable layer is provided with a plurality of water seepage holes for finely dividing the flowing water flow so as to slow down the impact force of the water flow; the packing layer is arranged between the permeable layer and the pier 1, the packing layer is used for resisting the water flow after diversion, the packing layer is formed by stacking a plurality of stone blocks with particle sizes, and the particle sizes of the stone blocks are sequentially reduced from top to bottom.
Specifically, the permeable layer is formed by splicing a plurality of permeable blocks 2, a stone-blocking reinforcing mesh 8 and stone-blocking precast blocks 9, the stone-blocking reinforcing mesh 8 is laid between two adjacent permeable blocks 2 on the same straight line, and the stone-blocking reinforcing mesh 8 divides the gap between two adjacent permeable blocks 2 into a plurality of small holes so as to split the flowing water flow; the stone-blocking precast blocks 9 are arranged between two adjacent permeable blocks 2 with included angles, the stone-blocking precast blocks 9 directly block water flow through gaps between the two adjacent permeable blocks 2 and guide the water flow to the permeable blocks 2 on two sides, so that the permeable layers are prevented from being damaged due to opposite tensile force.
The permeable block 2 is of a prefabricated structure, and the permeable layer is made of one of permeable concrete, permeable asphalt, polyurethane permeable material, carbon fiber permeable material, PP permeable material and EAU permeable material. The water permeable block 2 comprises a bottom plate 201, a vertical plate 202 and a connecting assembly, wherein the vertical plate 202 is transversely arranged to form a T-shaped structure with the center of the bottom plate 201 and the bottom plate 201, and the bottom plate 201 and the vertical plate 202 can be formed by pouring through the same die during prefabrication. The connecting assembly comprises a hanging ring 204, a pull ring 205 and a connecting ring, wherein the hanging ring 204 is arranged at the tops of the bottom plate 201 and the vertical plate 202, the stone-blocking reinforcing mesh 8 or the stone-blocking precast block 9 which are arranged on the surface of the water permeable block 2 can be fixedly laid through the hanging ring 204 and the pull ring 205, the pull ring 205 is arranged at two sides of the bottom plate 201 and the vertical plate 202, and the pull ring 205 and the connecting ring can be fixedly connected with two adjacent water permeable blocks 2.
Specifically, because the velocity of the upstream water flow is faster, the impact force is stronger, the outside of the permeable layer is provided with the water diversion pile 7, the water diversion pile 7 is a column formed by concrete pouring, the water diversion pile 7 can deviate the water flow impacting the water diversion pile 7, and a wake flow is formed after the water diversion pile 7 passes through, so that the turbulent intensity of vortex around the pier 1 can be effectively reduced, and the scouring of the water flow to the pier 1 is lightened. The bottom plate 201 of the water permeable block 2 is provided with a water diversion pile 7 mounting hole, the water diversion pile 7 is provided with a pull ring 205, the pull ring 205 on the bottom plate 201 is connected with a connecting ring, the water diversion pile 7 mounting hole is internally provided with a spiral rib 203, and the spiral rib 203 is used for fastening the installation of the water diversion pile 7, so that the water diversion pile 7 can generate certain displacement to reduce the impulsive force of water flow when bearing impact.
In a preferred embodiment, in order to further improve the water blocking effect of the water diversion pile 7, a steel pipe is sleeved outside the water diversion pile 7, and the steel pipe has higher strength and higher load bearing capacity.
Specifically, the height of the packing layer is lower than that of the water permeable layer, so that the packing is prevented from being flushed and lost due to direct flushing of water flow. The packing layer comprises a block stone filling layer 3 and a civil grid 10, the particle size of the block stone filling layer 3 is reduced from top to bottom in sequence, the particle size range of the uppermost packing is 450 mm-550 mm, and the particle size range of the lowermost packing is 250 mm-350 mm. The packing layers with different particle sizes are arranged to reduce the impact force of water flow to different flow rates, so that the pier 1 is prevented from being flushed directly, a plurality of irregular water flow channels are formed in gaps between the packing layers, a water flow with larger impact force is split into a plurality of water flows with smaller impact force, and the impact force to the pier 1 is reduced. The civil grid 10 is a two-dimensional grid or a three-dimensional grid screen with a certain height, which is formed by thermoplastic or mould pressing of high molecular polymers such as polypropylene, polyvinyl chloride and the like, and has uniform holes, so that the occlusion effect between fillers can be effectively improved, the bearing capacity of a filler layer is improved, and the fillers are prevented from moving.
In a preferred embodiment, the ring beam 5 and the longitudinal beam 6 are arranged on the surface of the bridge pier 1, and the ring beam 5 and the longitudinal beam 6 are crossly encircling the surface of the bridge pier 1, so that the impact resistance of the bridge pier 1 can be improved.
Other structures of the pier protecting structure according to this embodiment are known in the art.
The present application is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present application are within the scope of the technical proposal of the present application.
Claims (9)
1. The repairing method of the bridge pier is characterized by comprising the following steps:
s1, cleaning sundries outside the bridge pier to expose a foundation bed of the bridge pier, and confirming a hollowed-out part in the foundation bed;
s2, pouring underwater concrete to fill the hollowed-out part, and filling crushed stone blocks to level the foundation bed;
s3, arranging water permeable blocks around the bridge piers to form a water permeable layer, wherein the water permeable blocks are made of water permeable materials, water permeable holes are formed in the water permeable blocks, and the water permeable holes are used for refining and splitting water flowing through so as to slow down the impact force of the water flow; a gap is arranged between the permeable layer and the pier;
wherein, in step S3, the following steps are further included: s301, laying a stone-blocking reinforcing mesh between two adjacent permeable blocks on the same straight line; s302, setting stone-blocking precast blocks between two adjacent permeable blocks with included angles;
and S4, filling filler in the gap between the bridge pier and the permeable layer to form a filler layer, wherein the filler layer is formed by stacking a plurality of layers of filler with different particle sizes.
2. The repairing method of bridge pier according to claim 1, characterized in that:
the permeable block is a prefabricated member and is made of one of permeable concrete, permeable asphalt, polyurethane permeable material, carbon fiber permeable material, PP permeable material and EAU permeable material.
3. The repairing method of bridge pier according to claim 1, characterized in that:
in step S4, the height of the filler layer is lower than the height of the permeable layer, and the particle size of the filler in the filler layer increases from bottom to top.
4. A repair method of a pier according to claim 3, wherein:
the particle size range of the filler at the lowest layer is 200 mm-300 mm;
the particle size of the uppermost filler ranges from 500mm to 600mm.
5. The repairing method of bridge pier according to claim 1, further comprising the step of, in step S4:
s401, after each layer of filler is paved, a civil grid is paved above the layer of filler, and then the next layer of filler is paved.
6. The repairing method of bridge pier according to claim 1, further comprising the steps of:
s5, arranging water diversion piles on the water permeable blocks at the upstream and the two sides, wherein the water diversion piles are arranged at the outer sides of the water permeable blocks.
7. The utility model provides a protective structure of pier which characterized in that includes:
the permeable layer is arranged around the bridge pier in a surrounding mode, a plurality of water seepage holes are formed in the permeable layer, and the water seepage holes are used for refining and splitting flowing water flow so as to slow down the impact force of the water flow;
the packing layer is arranged between the permeable layer and the pier, the packing layer is used for resisting the split water flow, the packing layer is formed by stacking a plurality of stone blocks with particle sizes, and the particle sizes of the stone blocks are sequentially reduced from top to bottom;
wherein the water permeable layer comprises:
a water permeable block made of a water permeable material;
the stone blocking steel bar net is arranged between two adjacent permeable blocks on the same straight line and is laid on the outer surfaces of the permeable blocks;
the stone-blocking precast block is arranged between two adjacent permeable blocks with included angles and is connected with the bottom plate.
8. The pier protecting structure according to claim 7, wherein the water permeable block comprises:
the water diversion pile comprises a bottom plate, wherein a water diversion pile mounting hole is formed in the bottom plate and is used for mounting a water diversion pile, a spiral rib is arranged on the inner ring of the water diversion pile mounting hole and used for fastening the mounting of the water diversion pile, the water diversion pile is arranged on one side of a vertical plate and used for changing flowing water into wake flow, a metal layer is sleeved outside the water diversion pile and used for improving the impact strength of the water diversion pile;
the vertical plate is arranged in the center of the bottom plate, and the vertical plate and the bottom plate form a T-shaped structure;
the coupling assembling, coupling assembling is used for linking to each other a plurality of water permeable blocks, coupling assembling includes: the hanging ring is arranged at the tops of the bottom plate and the vertical plate; the pull rings are arranged on two sides of the bottom plate and the vertical plate; the connecting ring is used for connecting the hanging ring or the pull ring.
9. The pier protecting structure according to claim 7, wherein the filler layer has a height lower than that of the water permeable layer, the filler layer comprising:
the stone filling layer is formed by stacking a plurality of stone blocks with particle sizes;
and the civil grid is arranged between the two continuous stone filling layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210046245.2A CN114214975B (en) | 2022-01-12 | 2022-01-12 | Repair method for bridge pier and protection structure of bridge pier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210046245.2A CN114214975B (en) | 2022-01-12 | 2022-01-12 | Repair method for bridge pier and protection structure of bridge pier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114214975A CN114214975A (en) | 2022-03-22 |
| CN114214975B true CN114214975B (en) | 2023-09-26 |
Family
ID=80708336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210046245.2A Active CN114214975B (en) | 2022-01-12 | 2022-01-12 | Repair method for bridge pier and protection structure of bridge pier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114214975B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115787581A (en) * | 2022-12-30 | 2023-03-14 | 重庆交通大学 | Stepped pier anti-impact foot protection structure with graded water permeability |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963028A (en) * | 2006-11-10 | 2007-05-16 | 河海大学 | Method for protecting bridge pier by using tetrahedral water-permeable frame group |
| CN108411802A (en) * | 2018-05-30 | 2018-08-17 | 扬州大学 | A kind of underwater method for repairing pile foundation and scour hole |
| CN213625187U (en) * | 2020-09-14 | 2021-07-06 | 江苏宏远科技工程有限公司 | Pier protector convenient to maintain |
| CN113089571A (en) * | 2021-04-01 | 2021-07-09 | 长江水利委员会长江科学院 | Assembled water-permeable energy-dissipating tetrahedral embankment plugging member and construction method thereof |
| CN214005584U (en) * | 2020-10-26 | 2021-08-20 | 毕节市勘测设计研究院 | Hydraulic engineering river course slope protection structure with safeguard function |
| CN214089444U (en) * | 2020-12-14 | 2021-08-31 | 中南大学 | Pier protection device for preventing impact of rolling stones and debris flow |
| CN113389174A (en) * | 2021-07-09 | 2021-09-14 | 郭孟涛 | Protection device for building bridge |
| WO2021253824A1 (en) * | 2021-01-12 | 2021-12-23 | 浙江大学 | Bridge pier scour protection method combining concave normal surface of revolution and particle material |
-
2022
- 2022-01-12 CN CN202210046245.2A patent/CN114214975B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1963028A (en) * | 2006-11-10 | 2007-05-16 | 河海大学 | Method for protecting bridge pier by using tetrahedral water-permeable frame group |
| CN108411802A (en) * | 2018-05-30 | 2018-08-17 | 扬州大学 | A kind of underwater method for repairing pile foundation and scour hole |
| CN213625187U (en) * | 2020-09-14 | 2021-07-06 | 江苏宏远科技工程有限公司 | Pier protector convenient to maintain |
| CN214005584U (en) * | 2020-10-26 | 2021-08-20 | 毕节市勘测设计研究院 | Hydraulic engineering river course slope protection structure with safeguard function |
| CN214089444U (en) * | 2020-12-14 | 2021-08-31 | 中南大学 | Pier protection device for preventing impact of rolling stones and debris flow |
| WO2021253824A1 (en) * | 2021-01-12 | 2021-12-23 | 浙江大学 | Bridge pier scour protection method combining concave normal surface of revolution and particle material |
| CN113089571A (en) * | 2021-04-01 | 2021-07-09 | 长江水利委员会长江科学院 | Assembled water-permeable energy-dissipating tetrahedral embankment plugging member and construction method thereof |
| CN113389174A (en) * | 2021-07-09 | 2021-09-14 | 郭孟涛 | Protection device for building bridge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114214975A (en) | 2022-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111236161B (en) | Debris flow prevention and control system | |
| CN107190602B (en) | River erosion section pile-supported foam concrete light embankment structure and construction method | |
| US9644334B2 (en) | Methods of and systems for controlling water flow, breaking water waves and reducing surface erosion along rivers, streams, waterways and coastal regions | |
| CN111364486B (en) | Remediation and reinforcement device and method for emergency rescue of slide-resistant pile side slope | |
| CN110820695B (en) | Structure and method for controlling dam bursting peak flow of damming dam | |
| CN110374068B (en) | Construction method of drain hole of bottom plate of sluice stilling pool capable of preventing blockage | |
| CN114214975B (en) | Repair method for bridge pier and protection structure of bridge pier | |
| CN216999263U (en) | Protective structure of pier | |
| CN105862659B (en) | High-frequency debris flow shore protection and diversion method | |
| RU2321701C2 (en) | Weir construction method | |
| CN109610407B (en) | Ecological barricade of landslide prevention based on dead weight is balanced | |
| CN210797432U (en) | Water conservancy river course bank protection | |
| CN206916686U (en) | A kind of subgrade protection system in debris flow gully | |
| CN203821306U (en) | Flexible anti-scour protection pad | |
| CN1019915C (en) | Device of automatically laying rollers for preventing flushing | |
| KR101170789B1 (en) | Complex debris barrier of eco-friendly | |
| CN111997030B (en) | Soft soil reinforcing and curing method | |
| CN208685532U (en) | One kind effectively eliminating more unrestrained breakwater levee crown wave stress device | |
| KR20120005503U (en) | Scour Protection Block | |
| CN112575777A (en) | Frame reinforcing system and method for high-speed railway pier foundation penetrating through under channel | |
| CN219175134U (en) | Bank slope protection structure of flood discharge energy dissipation flushing area | |
| KR100776621B1 (en) | Pile structure for preventing a disaster by debris flow | |
| CN219490834U (en) | Riverway retaining wall restoration structure | |
| CN115030109B (en) | Construction and implementation method of steel-concrete prefabricated pipe-sheet pile mixed structure check dam | |
| CN218322812U (en) | Fill side slope supporting construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |