CN112482202A - Pull rod type multipurpose steel trestle bridge abutment and construction method thereof - Google Patents
Pull rod type multipurpose steel trestle bridge abutment and construction method thereof Download PDFInfo
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- CN112482202A CN112482202A CN202011167863.XA CN202011167863A CN112482202A CN 112482202 A CN112482202 A CN 112482202A CN 202011167863 A CN202011167863 A CN 202011167863A CN 112482202 A CN112482202 A CN 112482202A
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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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
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Abstract
本发明公开了一种拉杆式多用途钢栈桥桥台及其施工方法，所述双排钢管桩、挡土钢板桩、反拉钢板、台背填料、对拉螺杆和桥台搭板，首先在桥台前施打双排钢管桩作为整体制动措施；再针对河漫区存在的台背填土较高的情况，一方面采用钢板桩及腰梁结构实现挡土及冲刷的作用，另一方面采用对拉螺杆及反拉钢板实现土压力的平衡；然后钢板桩与反拉钢板之间填筑加固土确保台背稳定，上部设置一层混凝土桥头搭板，内部配置钢筋与钢管桩顶部焊接形成整体。采用本桥台设计及其施工方法可解决河漫区较高填方临时桥台拆除困难、沉降量大、稳定性差、台背冲刷等难题，有利于控制临时栈桥标高、桥路顺接及减少栈桥长度，从而达到降低工程造价的目的。
The invention discloses a tie-rod-type multi-purpose steel trestle abutment and a construction method thereof. The double-row steel pipe piles, soil retaining steel sheet piles, reverse-pulling steel plates, abutment back fillers, counter-pulling screws and abutment plates are first Apply double-row steel pipe piles in front of the bridge abutment as an overall braking measure; then, in view of the high backfill situation in the Heman area, on the one hand, steel sheet piles and waist beam structures are used to achieve soil retention and scouring. On the other hand, the balance of the earth pressure is achieved by using the counter-tensioning screw and the reverse-tensioning steel plate; then, the reinforcement soil is filled between the steel sheet pile and the reverse-tensioning steel plate to ensure the stability of the back of the platform, and a layer of concrete bridge head board is arranged on the upper part, and steel bars and steel pipes are arranged inside. The top of the pile is welded to form a whole. The use of this bridge abutment design and construction method can solve the problems of difficult removal of temporary bridge abutments with high fill in the Heman area, large settlement, poor stability, abutment back scouring, etc. The length of the trestle bridge, so as to achieve the purpose of reducing the project cost.
Description
Technical Field
The invention relates to the technical field of bridge engineering construction, in particular to a pull rod type multipurpose steel trestle bridge abutment and a construction method thereof.
Background
At present, a wider river flood plain is often designed in a river levee, a temporary steel trestle needs to be built when a project crosses the river levee, the service life is 2-5 years according to the construction period, in order to avoid the influence of the flood period on the steel trestle, the steel trestle is possibly designed to be higher than the river flood plain, if the steel trestle is directly built to the river levee of two banks, the steel trestle is in direct connection with an access road through a traditional concrete bridge abutment, the using amount of the steel trestle is large, and the cost is high; if only a main river crossing groove is built, a concrete bridge abutment is built on a flood plain and then is in direct connection with a flood plain sidewalk, a foundation needs to be arranged at the bottom of the concrete bridge abutment, and meanwhile, when the bridge abutment is high, concrete is adopted to design, so that the stress is complex, the size is large, the later period is difficult to break, the cost is high, and the lateral force resistance and flood-proof scouring capability of the common steel pipe bridge abutment are weak; the deep foundation pit also adopts double steel sheet piles to reach the soil retaining effect, but is not suitable for the temporary steel abutment in the flood plain area, and the steel sheet pile consumption is large, and the installation and the dismantlement construction are wasted time and energy.
Disclosure of Invention
In order to overcome the technical defects of complex concrete stress, large volume, difficult later-stage removal, high cost and the like in the traditional steel trestle construction in the prior art, the invention provides the pull rod type multipurpose steel trestle abutment and the construction method thereof, which meet the requirement of higher filling abutment, have high construction efficiency, can effectively reduce the maintenance times of the abutment and shorten the span of the steel trestle and solve the technical problems.
The invention achieves the aim through the following technical scheme, and the pull rod type multipurpose steel trestle bridge abutment comprises double rows of steel pipe piles, soil retaining steel plate piles, counter-pull steel plates, abutment back fillers, counter-pull screws and abutment butt straps. The double-row steel pipe piles are steel pipe piles with double rows of spacing of 3m and are arranged according to the width of a trestle, round steel pipes or I-shaped steel and the like are arranged among the steel pipe piles to serve as a double-row steel pipe pile connection system, fine sand or concrete is filled inside the steel pipe piles to enhance the rigidity and the transverse stability of the steel pipe piles, the soil-retaining steel plate piles are composed of one row of steel plate piles and a plurality of outer side retaining waist beams, the number of the steel plate piles is determined according to the width of a bridge abutment roadbed and the slope protection and is not less than the sum of the width of the trestle and the width of the slope protection, the length of the soil-retaining steel plate piles is determined according to the lower geological condition and the height of the bridge abutment after soil pressure analysis, the number of the outer side retaining waist beam layers is determined according to the height difference between the top surface of the bridge abutment and river overflowing, the outer side retaining waist beams are formed by welding double-spliced channel steel, the abutment back filler is positioned between the retaining steel sheet pile and the counter-pull steel sheet, is a cement soil or other reinforcing filler, is a convenient road direct-connection part for filling on the temporary trestle and the flood plain, the counter-pull screw rod adopts common screw steel, the retaining steel sheet and the counter-pull steel sheet are connected through the waist beams outside the two sides of the retaining soil, and are buried in the abutment back filler, a tension-compression balance structure is formed with the abutment back filler, a plurality of longitudinal main ribs are arranged inside the abutment butt plate, and the longitudinal main ribs extend out of the end of the upright post and are welded in the upright post at the top of the steel pipe pile.
In the specific construction process of the pull rod type multipurpose steel trestle bridge abutment, the whole construction method comprises the following construction steps:
s1: the method comprises the following steps of (1) driving a steel pipe pile, paying off according to a design position, constructing a bridge abutment steel pipe column on a river bank line or a flood plain line, determining the top elevation according to the bridge deck elevation of a trestle, erecting section steel on the pile top close to the side of a river channel, manufacturing a welding platform on the upper portion of the steel pipe column on the side of the flood plain and erecting the section steel, placing a rubber cushion block on the upper portion, erecting the section steel on the top, and pouring fine sand or concrete into the soil outlet portion of the steel pipe pile;
s2: the method comprises the following steps of (1) driving a row of soil-retaining steel sheet piles, paying off according to a design position, driving a row of soil-retaining steel sheet piles transversely next to the driven steel pipe piles along a line, and installing counter-pulling steel plates on the other sides of counter-pulling screws with intervals of more than 8 m;
s3: the method comprises the steps of (1) bench back backfilling and supporting system construction, selecting whether to partially replace and fill a foundation according to site geological conditions, backfilling between a steel sheet pile and a counter-pull steel sheet layer by layer, compacting cement layer by layer to reinforce and fill soil, excavating a notch with the depth of 150mm and the width of 100mm at the bottom according to the design position of a counter-pull screw when backfilling to a first layer waist beam at the designed bottom, mounting a counter-pull screw, fixing the notch on an outer side waist beam of a retaining soil by using a double-layer screw cap, continuously backfilling and mounting each layer of outer side waist beam of the retaining soil and the counter-pull screw, and synchronously performing 1:1 slope protection construction in the soil filling and compacting process, wherein;
s4: arranging bridge abutment buttresses, arranging a row of brackets on the upper parts of the steel sheet piles, enabling the top surfaces of the brackets to be flush with backfill reinforced soil, enabling upper embedded steel bars to penetrate into the inner side of the top of the steel pipe pile, and then pouring the concrete bridge abutment buttresses;
s5: the bridge abutment upper structure is installed, an upper bridge abutment beret beam supporting structure and prefabricated bridge decks are installed, expansion joints are arranged between the bridge abutment and the abutment back filling, and at least three prefabricated bridge decks are arranged on the abutment back and are sequentially connected with a common roadbed filling access road.
Generally, compared with the prior art, the technical scheme of the invention can achieve the following beneficial effects:
1. the pull rod type multipurpose steel trestle bridge abutment is reinforced in multiple ways, ensures the stress safety of the structure, solves the problem of weak lateral force of a steel pipe of the bridge abutment, has strong integrity, is completely a steel structure, has strong reutilization effect, is free from pollution during dismantling, has high construction efficiency and small forward connection settlement, and meets the requirement of forward connection of a temporary trestle bridge and an access road for a long time;
2. by adopting the construction method, efficient, high-quality and stable design and construction of the temporary abutment can be realized, the forward connection transition effect of the temporary bridge and the temporary road is better, the later-stage dismantling is easy, the difficult problem of abutment construction under the conditions of higher filling and river scouring is effectively solved, the on-site construction period and cost are saved, and the later-stage maintenance workload is reduced.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a schematic longitudinal section of a multi-purpose steel trestle abutment of the present invention;
FIG. 2 is a schematic view of a lower plan view of a multi-purpose steel trestle abutment of the present invention;
FIG. 3 is a schematic longitudinal section 1/2 of a multi-purpose steel trestle abutment of the present invention;
FIG. 4 is a detailed schematic view of the steel pipe pile overlap joint platform according to the present invention;
FIG. 5 is a detailed view of the connection between the retaining steel plate and the steel pipe column according to the present invention;
FIG. 6 is a detailed view of the abutment attachment plate according to the present invention;
in the figure: 1-double rows of steel pipe piles, 2-soil retaining steel plate piles, 3-counter-pulling steel plates, 4-table back filling materials, 5-counter-pulling screw rods, 6-abutment butt straps, 7-river bank lines or river runflat lines, 8-section steel, 9-Bailey beam supporting structures, 10-prefabricated panels, 11-expansion joints, 12-rubber mats, 13-steel pipe piles, 14-double rows of steel pipe pile connection systems, 15-welding platforms on the steel pipe piles, 16-soil retaining steel plates, 17-soil retaining outer side waist beams, 18-middle steel plates, 19-concrete abutment butt straps, 20-configuration main ribs and 21-brackets.
Detailed Description
As shown in fig. 1 to 3, the present invention is a schematic diagram of a longitudinal section, a lower plane and a 1/2 longitudinal section of a tie-rod type multipurpose steel trestle abutment, and comprises double rows of steel pipe piles 1, retaining steel plate piles 2, counter-pull steel plates 3, abutment back fillers 4, counter-pull screws 5 and abutment buttresses 6.
The double-row steel pipe piles 1 are steel pipe piles 13 with a double-row interval of 3m and are arranged according to the width of a trestle, round steel pipes or I-shaped steel and the like are arranged among the steel pipe piles 13 to serve as double-row steel pipe pile connection systems 14, fine sand or concrete is filled inside the double-row steel pipe piles to enhance the rigidity and the transverse stability of the double-row steel pipe piles, and as shown in fig. 4, the double-row steel pipe piles 1 is a detailed schematic diagram of a steel.
The retaining steel sheet pile 2 is composed of a row of steel sheet piles and a plurality of retaining outer side waist beams 17, the number of the retaining steel sheet piles 2 is determined according to the width of a bridge abutment roadbed and a protection slope and is not smaller than the sum of the width of a trestle and the width of the protection slope, the length of the retaining steel sheet pile 2 is determined according to the lower geological condition and the height of the bridge abutment after soil pressure analysis, the number of the retaining outer side waist beams 17 is determined according to the height difference between the top surface of the bridge abutment and river overflowing, the retaining outer side waist beams 17 are formed by welding double-spliced channel steel, the middle steel sheet 18 is welded on the steel pipe pile 13, and as shown in figure 5, the retaining steel sheet 16 and the steel pipe column.
The counter-pulling steel plate 3 is composed of a small number of steel plates, the distance between the counter-pulling steel plate 3 and the retaining steel plate pile 2 is not less than 8m, two counter-pulling steel plates are arranged at each position, and a finish-rolling deformed steel bar gap is reserved in the middle.
The platform back filler 4 is positioned between the retaining steel sheet pile and the counter-pull steel sheet, is made of cement soil or other reinforcing fillers and is a part which is directly connected with a filling convenience road on the temporary trestle and the flood plain.
The opposite-pulling screw rods 5 are made of common deformed steel bars, the soil retaining steel plates 16 and the reverse-pulling steel plates 3 are connected through the outer waist beams 17 of the soil retaining parts at two sides, and are embedded in the table back filler 4 to form a tension-compression balance structure with the table back filler 4.
A plurality of longitudinal main ribs 20 are arranged inside the abutment butt strap 6, the longitudinal main ribs 20 extend out of the end of the upright column and are bent into the upright column at the top of the steel pipe pile 13 for welding, and as shown in fig. 6, the longitudinal main ribs are a detailed schematic diagram of the abutment butt strap 6.
In the specific construction process of the pull rod type multipurpose steel trestle abutment, the construction of the steel trestle abutment is mainly completed through the following steps:
the method comprises the following steps: the method comprises the following steps of (1) driving a steel pipe pile 13, paying off according to a design position, constructing a bridge abutment steel pipe column on a river bank line or a river flood beach line 7, determining the top elevation according to the bridge deck elevation of a trestle, erecting section steel 8 on the pile top close to a river channel side, manufacturing a welding platform on the upper portion of the steel pipe column on the river flood beach side, erecting section steel 8, placing a rubber cushion block 12 on the upper portion, erecting the section steel 8 on the top portion, and pouring fine sand or concrete into the soil outlet portion of the steel pipe pile 13;
step two: the row of soil-retaining steel sheet piles 2 are arranged in a driving mode, paying off is carried out according to the designed position, the row of soil-retaining steel sheet piles 2 are transversely arranged close to the driven steel pipe piles 13 along the line, and the reverse-pulling steel plates 3 are arranged on the other sides of the counter-pulling screw rods 5 at intervals of more than 8 m;
step three: the method comprises the steps of (1) construction of a platform back backfilling and supporting system, selecting whether to locally replace and fill a foundation according to site geological conditions, backfilling between a steel sheet pile 13 and a counter-pull steel plate 3 layer by layer, compacting cement layer by layer to reinforce and fill soil, digging a notch with the depth of 150mm and the width of 100mm at the bottom according to the design position of a counter-pull screw 5 when backfilling is carried out to the mark of a first layer of waist beam at the designed bottom, installing a counter-pull screw 5, fixing the notch on an outer side waist beam 17 of a retaining soil by using a double-layer nut, continuously backfilling and installing each layer of outer side waist beam 17 of the retaining soil and the counter-pull screw 5, and synchronously carrying out 1:1 slope protection construction;
step four: arranging a bridge abutment butt strap 6, arranging a row of brackets 21 on the upper part of the steel sheet pile, enabling the top surfaces of the brackets 21 to be flush with backfill reinforcing soil, enabling upper embedded steel bars to penetrate into the inner side of the steel pipe pile top 13, and then pouring a concrete bridge abutment butt strap 19;
step five: the upper part of the bridge abutment is structurally installed, an upper bridge abutment beret beam supporting structure 9 and prefabricated bridge decks 10 are installed, expansion joints 11 are arranged between the bridge abutment and the abutment back filling, and at least three prefabricated bridge decks 10 are arranged on the abutment back and are sequentially connected with a common roadbed filling pavement.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011167863.XA CN112482202A (en) | 2020-10-27 | 2020-10-27 | Pull rod type multipurpose steel trestle bridge abutment and construction method thereof |
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| CN202011167863.XA CN112482202A (en) | 2020-10-27 | 2020-10-27 | Pull rod type multipurpose steel trestle bridge abutment and construction method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944106A (en) * | 2021-10-28 | 2022-01-18 | 中铁二十局集团有限公司 | Steel trestle bridge channel for upper bridge of land short pier bridge and construction method of steel trestle bridge channel |
| CN114575240A (en) * | 2022-03-01 | 2022-06-03 | 中国铁建大桥工程局集团有限公司 | Steel trestle bridge abutment |
| CN114837062A (en) * | 2022-06-06 | 2022-08-02 | 广东省源天工程有限公司 | A steel trestle connecting platform |
| CN115710857A (en) * | 2022-11-21 | 2023-02-24 | 中国建筑土木建设有限公司 | Fabricated steel trestle bridge abutment structure and construction method thereof |
| CN115897372A (en) * | 2022-11-07 | 2023-04-04 | 中铁大桥局第七工程有限公司 | A kind of cap for protecting U-shaped abutment and its construction method |
| CN116043688A (en) * | 2022-09-09 | 2023-05-02 | 中国建筑土木建设有限公司 | Temporary Construction Method of Steel Convenience Bridge |
| CN117071452A (en) * | 2023-10-13 | 2023-11-17 | 中国建筑第六工程局有限公司 | A flood protection method for high-drop water level construction trestle bridges |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113944106A (en) * | 2021-10-28 | 2022-01-18 | 中铁二十局集团有限公司 | Steel trestle bridge channel for upper bridge of land short pier bridge and construction method of steel trestle bridge channel |
| CN114575240A (en) * | 2022-03-01 | 2022-06-03 | 中国铁建大桥工程局集团有限公司 | Steel trestle bridge abutment |
| CN114837062A (en) * | 2022-06-06 | 2022-08-02 | 广东省源天工程有限公司 | A steel trestle connecting platform |
| CN114837062B (en) * | 2022-06-06 | 2023-09-08 | 广东省源天工程有限公司 | Steel trestle connecting platform |
| CN116043688A (en) * | 2022-09-09 | 2023-05-02 | 中国建筑土木建设有限公司 | Temporary Construction Method of Steel Convenience Bridge |
| CN115897372A (en) * | 2022-11-07 | 2023-04-04 | 中铁大桥局第七工程有限公司 | A kind of cap for protecting U-shaped abutment and its construction method |
| CN115710857A (en) * | 2022-11-21 | 2023-02-24 | 中国建筑土木建设有限公司 | Fabricated steel trestle bridge abutment structure and construction method thereof |
| CN117071452A (en) * | 2023-10-13 | 2023-11-17 | 中国建筑第六工程局有限公司 | A flood protection method for high-drop water level construction trestle bridges |
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