CN112176851A - Integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete - Google Patents
Integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete Download PDFInfo
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- CN112176851A CN112176851A CN202011153152.7A CN202011153152A CN112176851A CN 112176851 A CN112176851 A CN 112176851A CN 202011153152 A CN202011153152 A CN 202011153152A CN 112176851 A CN112176851 A CN 112176851A
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- 239000004567 concrete Substances 0.000 title claims abstract description 101
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 239000002245 particle Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 6
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000000192 social effect Effects 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 5
- 239000004566 building material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 238000004873 anchoring Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000010074 rubber mixing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010920 waste tyre Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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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
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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- Engineering & Computer Science (AREA)
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- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses an integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete, which comprises an abutment and an H-shaped steel pile embedded into the abutment along the length of the abutment, wherein the rubber concrete embedded into a concrete abutment is poured on the periphery of the top of the H-shaped steel pile, and the strength of the rubber concrete is basically consistent with that of concrete forming the abutment. The common concrete or the corrugated sleeves are arranged between the rubber concrete and the side surfaces of the abutment along the length direction of the abutment. The node anti-seismic structure improves the rotation capacity of the integral abutment-H-shaped steel pile node, reduces the lateral rigidity, increases the allowable horizontal displacement of the longitudinal bridge direction of the top structure, improves the ductility and the crack resistance of concrete at the integral abutment-H-shaped steel pile node, and improves the anti-seismic performance of the node. The use of the rubber concrete is beneficial to solving the problems of environmental protection and resource shortage caused by waste rubber, and the social effect is obvious.
Description
Technical Field
The invention relates to the field of optimization design of anti-seismic performance of an integral abutment bridge, in particular to improvement of anti-seismic performance of a node of an integral abutment-H-shaped steel pile.
Background
Among the traditional bridge structures, the support and the expansion joint of abutment department are the weak position in the bridge, under the external environment effect with when the earthquake takes place, take place to destroy or become invalid easily to influenced the normal use of bridge, improved the maintenance cost. The integral bridge is provided with the telescopic device and the support at the abutment, the beam end is directly cast with the abutment into a whole, and the deformation of the main beam is mainly adapted by the deformation of the abutment, the foundation and the soil; the displacement earthquake damage of the upper structure is reduced in the earthquake process, the earthquake damage of the support at the bridge abutment is avoided, the beam end is directly poured with the bridge abutment into a whole, the integrity of the structure is increased, and the earthquake damage of the bridge pier is reduced.
To maximize the flexibility of the foundation to accommodate superstructure deformation, the foundation of the integral abutment is typically formed with a single row of piles. The bridge design in China has more applications to concrete piles, but the horizontal deformation capacity of the reinforced concrete pile is obviously lower than that of a steel pile, the reinforced concrete pile is easy to crack under the action of lateral cyclic load to cause reinforcement corrosion, the anti-seismic performance and the energy consumption performance are poor, and the pile is difficult to repair after being damaged. In addition, in a site with complex geological conditions and large rock surface fluctuation, the concrete pile is difficult to be driven. Therefore, the H-shaped steel pile which is widely applied in foreign engineering is more suitable for the foundation of the integral abutment.
The rubber concrete is a novel green environment-friendly building material prepared by doping waste rubber tire particles into a cement concrete mixture. The method not only improves the mechanical property of the concrete, but also solves the problem of black pollution caused by waste tires. Compared with common concrete, the rubber aggregate concrete has the advantages of good ductility and toughness, excellent crack resistance, good durability, small density, good impact resistance, heat insulation and sound insulation and the like. Meanwhile, the reinforced rubber concrete member has good ductility and energy consumption capability, and is suitable for building structures with high earthquake resistance requirements.
Under the action of earthquake, the integral bridge abutment and the steel pile foundation absorb the deformation of the upper structure and coordinate the integral stress of the bridge, and the integral bridge abutment-steel pile node is one of key points in the stress process. In engineering, the H-shaped steel piles are directly embedded into the abutment, and a certain embedding length is ensured. When an earthquake occurs, the pile head of the steel pile directly contacts and extrudes with concrete at the node of the bridge abutment, the deformation capability of the concrete is low, the steel pile is easy to crack and locally crush, and the ductility of the structure is influenced, so that the integral bridge abutment-steel pile node needs to be improved.
Disclosure of Invention
Aiming at the prior art, the invention provides an integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete.
In order to solve the technical problems, the integral abutment-H-shaped steel pile node anti-seismic structure locally using the rubber concrete comprises an abutment and an H-shaped steel pile, wherein the upper part of the H-shaped steel pile is embedded into the abutment along the length of the abutment, the periphery of the top of the H-shaped steel pile is poured with the rubber concrete, and the depth of the rubber concrete embedded into the concrete abutment is greater than the depth of the H-shaped steel pile embedded into the concrete abutment; the abutment is a concrete abutment formed by concrete poured on the periphery and the top of the rubber concrete part; the rubber concrete consists of concrete and rubber particles, wherein the mixing amount of the rubber is 5-15%, the particle size of the rubber particles is 0.85-4.75mm, and the strength of the rubber concrete is basically consistent with that of the concrete forming the abutment.
Further, the integral abutment-H-shaped steel pile node earthquake-resistant structure is characterized in that concrete is alternately arranged with the rubber concrete along the length of the abutment in the range that the H-shaped steel pile is embedded into the abutment.
A corrugated sleeve is arranged between the rubber concrete and the side face of the bridge abutment, and a distance is reserved between the inner side face of the corrugated sleeve and the H-shaped steel pile. The depth of the corrugated sleeve embedded into the concrete bridge abutment is equal to the depth of the rubber concrete embedded into the concrete bridge abutment.
The height and the width of the H-shaped steel pile are not more than 350mm and 370 mm; the depth of the H-beam piles embedded in the concrete bridge abutment is determined according to the sufficient anchoring provided for the H-beam piles.
Compared with the prior art, the invention has the beneficial effects that:
(1) the H-shaped steel pile has small soil squeezing volume and pile sinking resistance and strong penetrating power, and is suitable for the condition that the concrete pile is difficult to construct and beat. In addition, the flexibility of the structure and the longitudinal bridge direction deformability of the bridge are improved by the H-shaped steel piles, and the allowable horizontal displacement of the longitudinal bridge direction is increased.
(2) Because the part of the H-shaped steel pile embedded into the bridge abutment is locally made of rubber concrete with lower elastic modulus and larger deformability, the rotation capability of the bridge abutment-H-shaped steel pile node is improved, the flexibility of the structure and the longitudinal bridge deformation capability of the bridge are further improved, and the allowable horizontal displacement of the longitudinal bridge is further improved.
(3) Because the rubber concrete with higher ductility and crack resistance is locally adopted at the part of the H-shaped steel pile embedded into the bridge abutment, the lateral rigidity of the structure and the earthquake force acting on the node are reduced, the crushing of the local concrete at the node and the plastic deformation of the steel pile under the earthquake action are reduced, and the repair cost after the earthquake is reduced.
(4) The rubber concrete can improve the recovery rate of the prior waste rubber due to the huge number of the small and medium span bridges suitable for being reformed into the integral abutment bridge, and the rubber concrete is applied to the construction and old bridge reformation of the integral abutment bridge, thereby being beneficial to solving the problems of environmental protection and resource shortage caused by the waste rubber and having obvious social effect.
Drawings
FIG. 1 is a schematic front view of an integral abutment-H-shaped steel pile node seismic structure according to the invention;
fig. 2 is a sectional structure diagram of the cut-off position A-A in fig. 1.
In the figure: 1-abutment, 2-rubber concrete, 3-H-shaped steel pile and 4-corrugated sleeve.
Detailed Description
In the description of the present invention, it should be noted that the terms, "upper", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The invention will be further described with reference to the following figures and specific examples, which are not intended to limit the invention in any way.
The invention provides an integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete, and aims to overcome the defects that the deformation capacity of the concrete at the node is low, and the node is easy to crack and locally crush under the action of an earthquake to influence the ductility of the structure. The advantages of low elastic modulus, high deformation capacity and high ductility and crack resistance of the rubber concrete are fully utilized, the horizontal deformation capacity of the longitudinal bridge of the structure is improved, the lateral rigidity of the structure and the seismic force acting on the node are reduced, the damage of local concrete at the node and the plastic deformation of the steel pile under the action of the earthquake are reduced, and the repair cost after the earthquake is reduced.
As shown in fig. 1 and 2, the integral abutment-H-shaped steel pile node earthquake-resistant structure using rubber concrete locally provided by the invention comprises an abutment 1 and an H-shaped steel pile 3, wherein the upper part of the H-shaped steel pile 3 is embedded into the abutment 1 along the length of the abutment 1, rubber concrete 2 is poured on the periphery of the top of the H-shaped steel pile 3, and the depth of embedding the rubber concrete 2 into the concrete abutment is greater than that of embedding the H-shaped steel pile 3 into the concrete abutment; the abutment 1 is a concrete abutment formed by concrete poured on the periphery and the top of the rubber concrete 2; the rubber concrete 2 is composed of concrete and rubber particles, wherein the rubber mixing amount is 5% -15%, the particle size of the rubber particles is 0.85-4.75mm, in specific implementation, the rubber concrete 2 can be a novel green environment-friendly building material prepared by mixing particles made of waste rubber into a cement concrete mixture, the novel green environment-friendly building material is poured on the periphery and the top of the pile top of the H-shaped steel pile 3 embedded into the bridge abutment 1, and the strength of the rubber concrete 2 is basically consistent with that of the concrete forming the bridge abutment 1.
Concrete is alternately arranged between the H-shaped steel pile 3 and the rubber concrete 2 along the length of the bridge abutment 1 in the range that the H-shaped steel pile 3 is embedded into the bridge abutment 1.
A corrugated sleeve 4 is arranged between the rubber concrete 2 and the side surface of the abutment 1, and the corrugated sleeve 4 restrains the rubber concrete 2 poured before the abutment; a distance is reserved between the inner side surface of the corrugated sleeve 4 and the H-shaped steel pile 3. The depth of the corrugated sleeve 4 embedded into the concrete bridge abutment is equal to the depth of the rubber concrete 2 embedded into the concrete bridge abutment.
The height and the width of the H-shaped steel pile 3 are not more than 350mm and 370 mm; the depth of the H-shaped steel piles 3 embedded in the concrete abutment 1 is determined according to the sufficient anchoring provided to the H-shaped steel piles 3.
The integral abutment-H-shaped steel pile node anti-seismic structure improves the rotation capacity of the integral abutment-H-shaped steel pile node, reduces the lateral rigidity, increases the allowable horizontal displacement of a longitudinal bridge of a top structure, improves the ductility and the anti-cracking performance of concrete at the integral abutment-H-shaped steel pile node, and improves the anti-seismic performance of the node. The use of the rubber concrete is beneficial to solving the problems of environmental protection and resource shortage caused by waste rubber, and the social effect is obvious.
The construction method for improving the integral abutment-H-shaped steel pile node earthquake-resistant structure by adopting the rubber concrete comprises the following steps:
as shown in fig. 1 and 2, the H-shaped steel piles 3 are prefabricated members, and may be formed by rolling or welding flange plates and webs, and the pile type is preferably no greater than HP350 × 370. The depth of the H-section steel piles 3 embedded in the concrete abutment 1 should be sufficient to provide sufficient anchorage for the H-section steel piles 3.
The rubber mixing amount of the rubber 2 part is 5-15%, the particle size of the rubber particles is 0.85-4.75mm, and the strength of the rubber concrete is similar to that of the bridge abutment concrete, so that sufficient deformation and bearing capacity of the integral bridge abutment-H-shaped steel pile node are provided.
The diameter of the corrugated sleeve 4 can completely accommodate the section of the H-shaped steel pile 3, and a certain space is reserved. The corrugated sleeve 4 should be embedded deeper into the concrete abutment 1 than the H-shaped steel piles 3.
The H-shaped steel pile 3 is large in pile shape, rubber concrete 2 and common concrete need to be used along the length of the bridge abutment 1 within the embedding depth range in an alternating mode, and the corrugated sleeve 4 is not used any more.
While the present invention has been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are illustrative only and not restrictive, and various modifications which do not depart from the spirit of the present invention and which are intended to be covered by the claims of the present invention may be made by those skilled in the art.
Claims (5)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011153152.7A CN112176851A (en) | 2020-10-26 | 2020-10-26 | Integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011153152.7A CN112176851A (en) | 2020-10-26 | 2020-10-26 | Integral abutment-H-shaped steel pile node anti-seismic structure locally using rubber concrete |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176852A (en) * | 2020-10-26 | 2021-01-05 | 天津大学 | An improved integrated bridge abutment-H-shaped steel pile joint anti-seismic structure with rubber plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120080106A (en) * | 2011-01-06 | 2012-07-16 | 김영호 | Method for constructing a abutment of integral abutment bridge |
| CN104831618A (en) * | 2015-04-20 | 2015-08-12 | 福州大学 | Abutment reaming hole construction for optimizing deformation capability of integral abutment bridge |
| CN110468690A (en) * | 2019-09-18 | 2019-11-19 | 福州大学 | The construction and construction method of H profile steel stake and abutment flexible connection |
| CN110886205A (en) * | 2020-01-09 | 2020-03-17 | 福州大学 | Semi-rigid connection structure and construction method of concrete pile foundation and bridge abutment |
| CN110886192A (en) * | 2019-11-28 | 2020-03-17 | 天津大学 | Integral abutment-steel pipe concrete pile node with laminated rubber and construction method |
| CN210439124U (en) * | 2019-05-16 | 2020-05-01 | 山东省交通规划设计院 | Corrugated steel pipe-rubber concrete anti-collision anti-seismic pier |
| CN112176852A (en) * | 2020-10-26 | 2021-01-05 | 天津大学 | An improved integrated bridge abutment-H-shaped steel pile joint anti-seismic structure with rubber plate |
| CN214194098U (en) * | 2020-10-26 | 2021-09-14 | 天津大学 | Seismic structure of integral bridge abutment-H-shaped steel pile joint using rubber concrete locally |
-
2020
- 2020-10-26 CN CN202011153152.7A patent/CN112176851A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120080106A (en) * | 2011-01-06 | 2012-07-16 | 김영호 | Method for constructing a abutment of integral abutment bridge |
| CN104831618A (en) * | 2015-04-20 | 2015-08-12 | 福州大学 | Abutment reaming hole construction for optimizing deformation capability of integral abutment bridge |
| CN210439124U (en) * | 2019-05-16 | 2020-05-01 | 山东省交通规划设计院 | Corrugated steel pipe-rubber concrete anti-collision anti-seismic pier |
| CN110468690A (en) * | 2019-09-18 | 2019-11-19 | 福州大学 | The construction and construction method of H profile steel stake and abutment flexible connection |
| CN110886192A (en) * | 2019-11-28 | 2020-03-17 | 天津大学 | Integral abutment-steel pipe concrete pile node with laminated rubber and construction method |
| CN110886205A (en) * | 2020-01-09 | 2020-03-17 | 福州大学 | Semi-rigid connection structure and construction method of concrete pile foundation and bridge abutment |
| CN112176852A (en) * | 2020-10-26 | 2021-01-05 | 天津大学 | An improved integrated bridge abutment-H-shaped steel pile joint anti-seismic structure with rubber plate |
| CN214194098U (en) * | 2020-10-26 | 2021-09-14 | 天津大学 | Seismic structure of integral bridge abutment-H-shaped steel pile joint using rubber concrete locally |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112176852A (en) * | 2020-10-26 | 2021-01-05 | 天津大学 | An improved integrated bridge abutment-H-shaped steel pile joint anti-seismic structure with rubber plate |
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