CN114991068B - Triangular built-in flood drainage triangular structure system and construction method thereof - Google Patents
Triangular built-in flood drainage triangular structure system and construction method thereof Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 650
- 239000010959 steel Substances 0.000 claims abstract description 650
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 16
- 208000034699 Vitreous floaters Diseases 0.000 claims abstract description 12
- 239000002893 slag Substances 0.000 claims abstract description 6
- 238000003466 welding Methods 0.000 claims description 68
- 238000005520 cutting process Methods 0.000 claims description 27
- 238000007789 sealing Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 238000012545 processing Methods 0.000 claims description 13
- 238000004080 punching Methods 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000004873 anchoring Methods 0.000 claims description 4
- 239000002689 soil Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract description 2
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- 238000009825 accumulation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
-
- 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
- E02D15/08—Sinking workpieces into water or soil inasmuch as not provided for elsewhere
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/42—Foundations for poles, masts or chimneys
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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
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- 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
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
-
- 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
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/18—Placing by vibrating
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
Abstract
The triangular built-in flood drainage triangular structure system is independently arranged in the upstream areas of the steel platform and the cofferdam section of the bridge; the triangular built-in flood drainage triangular structure system is mainly formed by arranging steel pipe piles along a water facing surface in a vertex angle structure, wherein the inner sides of the vertex angles and the inner sides of the bottoms of the two sides are respectively provided with one steel pipe pile to form an end triangular structure as a reinforcing node, and adjacent steel pipe piles are connected through a yoke, so that the triangular built-in flood drainage triangular structure system is formed. The triangular built-in flood drainage triangular structure system has the advantages of strong structural stability, good impact resistance, high slag blocking and water filtering efficiency, high interception hazard, medium and large-sized floaters, prevention of impact on a temporary bridge, small influence on construction, turnover and applicability to flood drainage and drainage protection structure systems for bridge construction under various complex conditions.
Description
Technical Field
The invention relates to the field of bridge flood control, in particular to a triangular built-in flood drainage triangular structure system and a construction method thereof.
Background
With the continuous development of town construction, the conditions of planning and building river-crossing or island highway bridges in areas such as rivers gathering or island crossing are gradually increased. The construction working face is built in a cofferdam, steel platform and temporary bridge mode, and construction transportation capacity and construction efficiency are improved. In an unrestricted river flat area, a temporary bridge is usually arranged on the upstream side of the cofferdam, steel pipe piles are applied to the outer sides of support piles on the upstream side of the temporary bridge to serve as anchor piles, and the anchor piles are welded with the support piles on the temporary bridge through channel steel, so that the flood fighting capacity of water construction facilities is improved. The flood control method for the water construction has even flood control capability, and intercepted large-scale floaters are difficult to discharge, so that large-scale accumulation is caused, and the flood season safety of water construction facilities such as a temporary bridge, a steel platform, a cofferdam and the like is endangered. In areas such as rivers gathering, islands crossing and mountain rivers, large water flows, large floaters gathering are increased, and risks are increased. If the temporary bridge is limited by underwater geology or surrounding environment factors, the temporary bridge needs to be arranged at the downstream side, the dangers of the cofferdam, the temporary bridge, the steel platform and the like are multiplied in the flood period, and a construction method capable of increasing the structural stability of the temporary bridge, the steel platform and the cofferdam, enhancing the flood fighting capability and facilitating flood drainage is urgently needed.
Disclosure of Invention
The invention aims to provide a flood drainage and drainage protection structure system which has the advantages of strong structural stability, good impact resistance, high slag blocking and water filtering efficiency, high interception hazard and small influence on the impact of a temporary bridge, can be used in a turnover way, and is suitable for bridge construction under various complex conditions. The steel pipe piles which are arranged at the top angles of the independent triangles are arranged on the steel platform of the bridge and the upstream of the cofferdam section, the triangular arrangement of the steel pipe piles at the end parts is reinforced, and the inter-pile joint beams are welded to form a triangular structure system with built-in triangular flood drainage. The method aims at the steel platform and the main flood control section of the cofferdam to carry out slag blocking, water drainage and flood drainage, overcomes the adverse effects of floating object impact, accumulation and other dangerous factors on water construction facilities, effectively solves the technical problem of flood drainage and drainage of bridge water construction facilities in complex river basin, and also solves the technical problem that the steel platform and the cofferdam are unfavorable for flood drainage and drainage due to the fact that a temporary bridge is limited to be arranged at the downstream.
The technical scheme for solving the problems is as follows: the triangular built-in flood drainage triangular structure system is independently arranged in the upstream areas of the steel platform and the cofferdam section of the bridge; the triangular built-in flood drainage triangular structure system is mainly formed by arranging steel pipe piles along a water facing surface in a vertex angle structure, wherein the inner sides of the vertex angles and the inner sides of the bottoms of the two sides are respectively provided with one steel pipe pile to form an end triangular structure as a reinforcing node, and adjacent steel pipe piles are connected through a yoke, so that the triangular built-in flood drainage triangular structure system is formed.
The further technical scheme is as follows: the steel pipe pile is vertically driven into a river bed, the upper part of the steel pipe pile is exposed out of the water surface for connection, and the lower part of the steel pipe pile is embedded into the rock soil of the river bed; the yoke comprises a parallel steel pipe and a diagonal steel pipe; the parallel steel pipe is connected with the adjacent steel pipe pile through the parallel end fixing steel piece, and the diagonal bracing steel pipe is connected with the adjacent steel pipe pile through the diagonal bracing end fixing steel piece.
The further technical scheme is as follows: the vertex angle range of the triangular built-in flood drainage triangular structure system is 100-140 degrees; the apex angle of the end triangular structure is an obtuse angle.
The further technical scheme is as follows: the parallel connection end fixing steel piece is cut and divided into a lower parallel connection end supporting steel piece and an upper parallel connection end sealing steel piece along the central axis of the parallel connection end fixing steel piece; the diagonal-bracing end fixing steel piece is cut and divided into a lower diagonal-bracing end supporting steel piece and an upper diagonal-bracing end sealing steel piece along the central axis of the diagonal-bracing end fixing steel piece.
The further technical scheme is as follows: the upper portion of steel-pipe pile is provided with the support angle steel, and the support angle steel is used for supporting shaped steel, as the temporary working face of welding.
The further technical scheme is as follows: the installation above the water surface of the parallel steel pipe is determined according to the water level and the elevation of the top of the steel pipe pile, and is arranged on the adjacent steel pipe pile in parallel according to an upper part, a middle part and a lower part, and the middle part adopts double-row parallel steel pipes; and the inclined strut steel pipes are obliquely arranged on the adjacent steel pipe piles and are positioned between the parallel steel pipes.
The other related technical proposal is as follows: the construction method of the triangular built-in flood drainage triangular structure system comprises the following construction process flows: A. the method comprises the steps of steel member on-site manufacturing, B, steel pipe pile sinking, C, connection and installation among steel pipe piles, D, floater cleaning, E, and triangle built-in flood drainage and drainage triangle structure disassembling.
The further technical scheme is as follows: and A, the operation key points of the on-site manufacturing of the steel member are as follows:
(1) lengthening the steel pipe pile: the steel pipe piles are formed by butt welding a plurality of steel pipe piles, the lengths of the steel pipe piles are determined according to the measured water depth, hydrology and meteorological conditions, pile extension on water is avoided, the depth of the steel pipe piles entering a river bed is ensured to meet anchoring requirements, and the height of the steel pipe piles exposed out of flood peak water surface in flood season is at least 1.5m; the steel pipe pile is selected from seamless steel pipes with phi 480-720 mm, deformed and damaged parts of the steel pipe pile are trimmed before lengthening and welding, oil stains and rust are removed from two sides of an interface, a corner grinder is used for polishing, and a welding groove is formed; the gap between the opposite openings of the upper section steel pipe pile and the lower section steel pipe pile is 2-4 mm, the verticality is corrected by using a theodolite, a copper clamp is arranged on the periphery of the top end of the lower section pile, and then electric welding is carried out; welding is conducted correspondingly, and three layers of pipe wall welding are conducted; during welding, the welding slag is removed in time after each layer of welding seam is welded, the joints of each layer of welding seam are staggered, the lining hoop is fully melted, and root penetration is ensured;
(2) manufacturing a parallel steel pipe and a diagonal bracing steel pipe: a single steel pipe with the outer diameter of 250 mm-350 mm and the wall thickness of 8 mm-12 mm is selected, and the processing length is 40-60 mm smaller than the design length, so that the lifting and the installation between piles are facilitated; according to the arrangement form, the spacing and the end node reinforcing requirement of the steel pipe piles, the processing length of the parallel steel pipe can be determined after drawing, and the end cutting is smooth and vertical to the pipe body of the steel pipe;
according to the arrangement form, the spacing and the parallel steel pipe arrangement position of the steel pipe piles, drawing a drawing paper can determine the processing length of the inclined support steel pipe, and the end part is cut in an inclined mode to be smooth and vertical;
(3) manufacturing a flat-connected end fixing steel piece and an inclined strut end fixing steel piece: the flat-connected end fixing steel piece is machined by adopting a steel pipe with the outer diameter larger than that of the flat-connected steel pipe by one specification, one end of the flat-connected end fixing steel piece is cut by adopting a punching machine die, the other end of the flat-connected end fixing steel piece is vertically cut by adopting a cutting machine, and the steel pipe machining and cutting ensure that the effective supporting length of the flat-connected end fixing steel piece is at least 80mm, so that the pipe wall of the flat-connected end fixing steel piece is in good contact with a steel pipe pile, and the welding is firm; the inclined strut end fixing steel piece is processed by a steel pipe with the outer diameter larger than that of the inclined strut steel pipe by one specification, one end of the inclined strut end fixing steel piece is cut by a punching machine die, the other end of the inclined strut end fixing steel piece is obliquely cut by a cutting machine, and the steel pipe processing and cutting ensure that the effective supporting length of the inclined strut end fixing steel piece is at least 80mm, so that the pipe wall of the inclined strut end fixing steel piece is in good contact with a steel pipe pile, and welding is firm; cutting the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece along the central line plane of the end fixing steel piece after the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece are processed, dividing the parallel end fixing steel piece into a parallel end supporting steel piece and a parallel end sealing steel piece, and dividing the inclined support end fixing steel piece into an inclined support end supporting steel piece and an inclined support end sealing steel piece;
(4) manufacturing supporting angle steel: and selecting 60-8 equilateral angle steel, and the length is at least 400mm.
The further technical scheme is as follows: the method for installing the steel pipe pile sinking comprises the following steps:
(1) the construction of the steel pipe piles adopts double-ship parallel operation, one ship is used as a transport ship for transporting and placing the steel pipe piles, and the other ship is used as a working ship for loading an automobile crane, a vibrating hammer with a hydraulic sharp nose pliers and a drilling machine; after reaching the position of the working surface, the ground anchor and the steel cable for the working ship are tied to fix the ship position and serve as a water surface hoisting operation platform;
(2) positioning the steel pipe pile: measuring, positioning and rechecking the positions of the steel pipe piles according to the design requirements of the arrangement form; the drilling machine drills a hole, and the automobile crane is matched with the electric vibration hammer to insert and punch the steel pipe pile.
(3) Strong-pressure implantable pile sinking: lifting the steel pipe pile by the main hook of the automobile crane, and slowly lifting to a measuring position to put down the steel pipe pile; taking the influence of water flow into consideration, upstream pre-deflection can be performed by 3-4 cm; the steel pipe pile is kept in a vertical state, enters a river bed to a certain depth under the action of dead weight, can be kept in a vertical state in water, and after a main hook is separated from the steel pipe pile, a vibrating hammer is lifted and moved to the top of the steel pipe pile, and the pipe wall is clamped by a hydraulic sharp nose of the vibrating hammer; checking the vertical states of the steel pipe pile and the vibrating hammer, and beginning to insert and drive the pile sinking;
(4) monitoring the pile sinking process, stopping the hammer when the penetration degree of the steel pipe pile is 1-3 cm/min when the steel pipe pile is vibrated into the river bed under the vibration of the vibrating hammer after the depth of the steel pipe pile entering the river bed meets the requirements and the plane position and the verticality of the steel pipe pile are not changed, and carrying out pile sinking construction of the next steel pipe pile 1; the pile sinking operation is completed, so that the vertex angle of the arrangement of the steel pipe piles 1 is 100-130 degrees, and the distance between the steel pipe piles in the upstream surfaces on two sides is less than 5m; the end part is additionally provided with a steel pipe pile 1 to form an end part triangular structure, namely a built-in triangular reinforcing node, and the vertex angle of the end part triangular structure is required to be larger than 90 degrees.
The further technical scheme is as follows: the step C is characterized in that the connection and installation construction method between the steel pipe piles comprises the following steps:
(1) firstly, installing a lower parallel connection and an inclined strut between steel pipe piles of a vertex angle reinforcing node, then installing a lower parallel connection steel pipe and an inclined strut steel pipe between steel pipe piles of reinforcing nodes at the bottoms of two sides, realizing the stability of a built-in triangular node, and then installing connection between the steel pipe piles of other areas; installing upper parallel steel pipes and diagonal steel pipes in the sequence;
(2) setting an operation platform: for the installation of the bottom parallel steel pipe, the inclined strut steel pipe, the parallel end fixing steel piece and the inclined strut end fixing steel piece, a small ship and a steel pipe pile are bound and fixed by ropes to serve as a welding operation platform; for the installation of the parallel steel pipes, the diagonal steel pipes, the parallel end fixing steel pieces and the diagonal end fixing steel pieces at the middle and upper parts, supporting angle steel is vertically welded at the proper positions of the steel pipes; the method comprises the steps of lifting steel parts such as I-steel and the like at right angles of support angle steel, spot-welding and fixing the steel parts to serve as a temporary operation platform, and dismantling the temporary operation platform after connection and installation among piles are completed;
(3) and (3) mounting a parallel end support steel piece: welding arc ends of the parallel end support steel pieces at the joint positions of the steel pipe piles and the parallel steel pipes by adopting single-sided fillet welds, wherein the parallel end support steel pieces at the two ends of the parallel steel pipes are symmetrical and aligned with each other and are vertical to the steel pipe piles;
(4) and (3) installing parallel steel pipes: hoisting the parallel steel pipes, wherein two ends of the parallel steel pipes are symmetrically hoisted into the support steel pieces at the end parts of the parallel steel pipes; the vertical end of the parallel connection end part supporting steel piece is welded and fixed with the parallel connection steel pipe;
(5) and (3) mounting a parallel end-sealing steel piece: lifting the flat-connected end closed steel piece, fully welding and fixing the arc end connected with the steel pipe pile, and fully welding and fixing the joint and closure position of the flat-connected end supporting steel piece; the parallel steel pipe is welded with the closed steel piece at the end part of the parallel steel pipe, so that looseness is prevented;
(6) and (3) mounting a diagonal end supporting steel member: welding the arc end of the inclined strut end supporting steel piece at the joint of the steel pipe pile and the inclined strut steel pipe by adopting a single-sided fillet weld, so as to ensure that the arc inner sides of the inclined strut end supporting steel pieces at the two ends of the inclined strut steel pipe are on the same curved surface, and the angle deviation between the inclined strut end supporting steel piece and the steel pipe pile is within an allowable range;
(7) and (3) installing diagonal bracing steel pipes: lifting the inclined support steel pipe, wherein two ends of the inclined support steel pipe are placed on the installed inclined end supporting steel piece, and the supporting lengths of the two ends of the inclined support steel pipe are kept consistent;
(8) and (3) installing inclined strut end sealing steel parts: lifting the inclined strut end closed steel piece, fully welding and fixing the arc end connected with the steel pipe pile, and fully welding and fixing the joint and closure position of the inclined strut end supporting steel piece; and the inclined strut steel pipe is welded with the inclined strut end sealing steel piece to prevent loosening.
By adopting the technical scheme, the triangular built-in flood drainage triangular structure system and the construction method thereof have the following beneficial effects compared with the prior art:
1. the construction of the triangular built-in flood drainage and drainage triangular structure system is carried out on the shore, on a ship and on a diversion device structure, so that a construction temporary bridge and an operation platform are not occupied, normal passing of the temporary bridge is not influenced, cofferdam construction is not influenced, and the construction efficiency of the bridge is enhanced.
2. The triangular built-in flood drainage triangular structure system is used as an independent stress system, the depth of the steel pipe pile entering the river bed meets the requirements, the impact resistance and the bending moment resistance are high, the steel pipe pile is not connected with a temporary bridge and a platform, adverse effects on the steel pipe pile and the river bed are avoided, and the protection safety is high.
3. The impact resistance is good: according to the flood control and diversion construction technology of the triangular built-in flood drainage triangular structure system, the steel pipe piles on the upstream face are arranged according to the triangular vertex angles, the joint beams among the steel pipe piles are welded firmly, part of floaters float along the diversion inclined plane due to the arrangement of the triangular vertex angles, and the fact that dangerous floaters are accumulated on the upstream of a flood control and diversion facility is reduced. The external force that the top and both sides bottom node of triangle-shaped flood control water conservancy diversion facility received is great, establishes a steel-pipe pile and stake inter-pile welding respectively additional at three tip, upgrades the single steel-pipe pile of tip into triangle stability welded multitube pile tip, is favorable to resisting flood season floater impact force and the not easy head pressure that moves that the floater that drifts and pile up and cause. The supporting steel piece and the sealing steel piece of the end fixing steel piece are separately installed, so that round steel (namely, parallel steel pipes and diagonal steel pipes) can be conveniently hoisted in place. And a steel pipe end connecting piece is adopted between the steel pipe pile and the parallel connection and diagonal bracing steel pipe to enable the contact surface of the steel pipe to be closed and fully welded, so that the firmness of end connection is improved. The included angle between the drainage surface and the water flow impact, the distance between the steel pipe piles, the distance between the steel pipes and the like can be freely adjusted according to the on-site conditions, the arrangement is flexible, and the use requirements of the different-width impact-resistant and flood drainage surfaces are met.
4. The economy is good: the steel pipe pile with the surplus bridge and the working platform can be used as an anchoring pile of the flood control diversion facility after simple processing, and is economical and practical. The dismantled steel material can be recycled, so that the waste is reduced, and the engineering cost is lowered.
5. The invention is suitable for river bridge construction and is used as flood control safety measures in flood season of facilities such as a temporary bridge, an operation platform, a cofferdam and the like. And (3) a protection project for construction in water of a bridge pier foundation in flood season.
The technical characteristics of the triangular built-in flood drainage and drainage triangular structure system and the construction method thereof are further described below with reference to the accompanying drawings and the embodiment.
Drawings
Fig. 1: in the embodiment, a triangular built-in flood drainage and drainage triangular structure system is shown in a schematic structure;
fig. 2: a schematic structural diagram of coupling between adjacent steel pipe piles in an embodiment;
fig. 3-1: schematic diagram of a steel pipe pile in an embodiment;
fig. 3-2: a top view of a steel pipe pile in the embodiment;
fig. 4: in the embodiment, the structural schematic diagram of the supporting angle steel is shown;
fig. 5: a structural schematic diagram of the parallel steel pipe in the embodiment;
fig. 6: a structural schematic diagram of the diagonal bracing steel pipe in the embodiment;
fig. 7-1: in the embodiment, the structure of the parallel connection end fixing steel piece is schematically shown;
fig. 7-2: an unfolding schematic diagram of the parallel connection end fixing steel piece in the embodiment;
fig. 7-3: in the embodiment, the flat end part is used for fixing the front view of the steel piece;
fig. 7-4: a top view of the flat end fixed steel member in the embodiment;
fig. 8-1: in the embodiment, the inclined strut end part is fixed on the structural schematic diagram of the steel piece;
fig. 8-2: an unfolding schematic diagram of the inclined strut end fixing steel piece in the embodiment;
fig. 8-3: front view of the inclined strut end fixing steel piece in the embodiment;
fig. 8-4: a top view of the diagonal strut end mount steel member in an embodiment;
fig. 9: the invention relates to a flood control and diversion application schematic diagram of a triangular built-in flood drainage and diversion triangular structure system.
In the figure:
1-a steel pipe pile; 2-parallel steel pipes; 3-bracing the steel pipe; 4-flat-connected end fixing steel pieces; 5-fixing steel pieces at the end parts of the diagonal braces; 6-supporting angle steel; 7-flat end support steel; 8-flat end closure steel; 9-supporting the steel member with inclined end parts; 10-diagonal bracing end closure steel member.
Detailed Description
Example 1:
as shown in fig. 1 and 9: the triangular built-in flood drainage triangular structure system is independently arranged in the upstream areas of the steel platform and the cofferdam section of the bridge; the triangular built-in drainage triangular structure system is mainly formed by arranging steel pipe piles 1 along a water facing surface in a vertex angle structure, wherein one steel pipe pile 1 is respectively arranged on the inner side of the vertex angle and the inner sides of the bottoms of two sides to form an end triangular structure as a reinforcing node, and adjacent steel pipe piles 1 are connected through a yoke, so that the triangular built-in drainage triangular structure system is formed. .
The steel pipe pile 1 is formed by butt welding a plurality of steel pipe piles (see fig. 3-1 and 3-2), the steel pipe pile 1 is vertically driven into a river bed, the upper part of the steel pipe pile 1 is exposed out of the water surface for connection, and the lower part of the steel pipe pile is embedded into the rock soil of the river bed; the yoke comprises a parallel steel pipe 2 and a diagonal steel pipe 3; the parallel steel pipe 2 is connected with adjacent steel pipe piles through parallel end fixing steel pieces 4, and the inclined strut steel pipe 3 is connected with adjacent steel pipe piles through inclined strut end fixing steel pieces 5.
As shown in fig. 5, the parallel steel pipe 2 is a single steel pipe, and the end part is cut vertically. As shown in fig. 2, the installation above the water surface of the parallel steel pipe is determined according to the water level and the elevation of the top of the steel pipe pile, and the parallel steel pipe is installed on the adjacent steel pipe pile according to the upper, middle and lower parts, and the middle parallel steel pipe is reinforced and arranged, and double-row parallel steel pipes are adopted.
As shown in fig. 6, the diagonal bracing steel pipes are single steel pipes, the end parts of the diagonal bracing steel pipes are cut in an inclined mode, the cutting surfaces of the diagonal bracing steel pipes are vertical, and the diagonal bracing steel pipes are obliquely arranged on adjacent steel pipe piles and are located between parallel steel pipes.
As shown in fig. 7-1 to 7-4, the flat-joint end fixing steel piece 4 is cut by a steel pipe which is larger than the flat-joint steel pipe 2 by one specification, one end of the steel pipe pile is vertically matched with the steel pipe pile, the steel pipe pile is cut by a punching machine die according to a tee joint shape, and the other end of the steel pipe pile is vertically cut by a cutting machine. After the cutting is completed, the cutting is performed along the central axis of the parallel end fixing steel piece, and the parallel end fixing steel piece is divided into a lower parallel end supporting steel piece 7 and an upper parallel end sealing steel piece 8.
As shown in fig. 8-1 to 8-4, the steel member 5 is fixed at the end of the diagonal brace, a steel pipe with a specification larger than that of the diagonal brace steel pipe 3 is selected for cutting, one end of the diagonal brace is matched with the steel pipe pile according to a designed inclination angle, the steel pipe pile is cut according to a tee joint big sample by adopting a punching machine die, and the other end of the diagonal brace is cut by adopting a cutting machine according to the inclination angle. After the cutting is completed, the steel member is cut along the central axis of the fixed steel member of the inclined strut end, and is divided into a lower inclined strut end supporting steel member 9 and an upper inclined strut end sealing steel member 10.
As shown in fig. 4, the supporting angle steel 6 is a single equilateral angle steel, is welded with the vertical steel pipe pile vertically, is used for supporting the section steel as a temporary welding working surface, and is removed after the completion.
During connection, the flat-joint end fixing steel piece 4, the inclined strut end fixing steel piece 5 and the supporting angle steel 6 are welded on the surface of the steel pipe pile 1, two ends of the flat-joint steel pipe 2 are respectively fixed on the flat-joint end fixing steel piece 4 and welded with the flat-joint end fixing steel piece, and two ends of the inclined strut steel pipe 3 are respectively fixed on the inclined strut end fixing steel piece 5 and welded with the inclined strut end fixing steel piece. The parallel connection end supporting steel piece 7 is welded with the steel pipe pile 1, and after the parallel connection steel pipe 2 is in place, the parallel connection end sealing steel piece 8 is welded to form a complete parallel connection end fixing steel piece 4; the diagonal-bracing end supporting steel member 9 is welded with the steel pipe pile 1, and then the diagonal-bracing end sealing steel member 10 is welded after the diagonal-bracing steel pipe 3 is in place, so that the complete diagonal-bracing end fixing steel member 5 is formed. The supporting steel piece and the sealing steel piece of the end fixing steel piece are installed separately, so that the round steel is conveniently hoisted in place. The supporting steel piece is welded with the sealing steel piece for closing, and then welded with the parallel connection and diagonal bracing steel pipe, so that the round steel is fixed.
The vertex angle range of the triangular built-in flood drainage triangular structure system is preferably 100-140 degrees; the apex angle of tip triangle-shaped structure is obtuse angle (i.e. is not less than 90), and the drainage face that the steel-pipe pile was arranged is 50 ~ 70 contained angles with rivers impact like this, utilizes the parallel linkage between the steel-pipe pile, the inclined strut steel pipe to block sediment drainage, does not hinder little drift thing to flow away, intercepts great, easily piled up drift thing, and some floats are downflow from triangle built-in flood drainage triangular structure system both sides, does not cause the influence to steel temporary bridge and steel operation platform steel-pipe pile, promotes flood drainage effect, avoids setting such as temporary bridge to be impacted by great drift thing fast, guarantees facility safety such as temporary bridge and cofferdam.
Example 2:
the construction method of the triangular built-in flood drainage triangular structure system is the construction method of the triangular built-in flood drainage triangular structure system in embodiment 1, and the construction process flow is as follows: A. the method comprises the steps of steel member on-site manufacturing, B, steel pipe pile sinking, C, connection and installation among steel pipe piles, D, floater cleaning, E, and triangle built-in flood drainage and drainage triangle structure disassembling.
The concrete construction steps are as follows:
and A, the operation key points of the on-site manufacturing of the steel member are as follows:
(1) lengthening the steel pipe pile: the steel pipe pile is formed by butt welding a plurality of steel pipe piles, the length of the steel pipe pile is determined according to the measured water depth, hydrology and meteorological conditions, pile extension on water is avoided, the depth of the steel pipe pile entering a river bed is ensured to meet anchoring requirements, and the height of the flood peak water surface in the flood season is exposed to be at least 1.5m. The steel pipe pile is selected from seamless steel pipes with phi 480-720 mm, deformed and damaged parts of the steel pipe pile are trimmed before lengthening and welding, oil stains and rust are removed from two sides of an interface, a corner grinder is used for polishing, and a welding groove is formed; the gap between the opposite openings of the upper section steel pipe pile and the lower section steel pipe pile is 2-4 mm, the verticality is corrected by using a theodolite, a copper clamp is arranged on the periphery of the top end of the lower section pile, and then electric welding is carried out; welding is conducted correspondingly, and three layers of pipe wall welding are conducted; during welding, the welding slag is removed in time after each layer of welding seam is welded, the joints of each layer of welding seam are staggered, the lining hoop is fully melted, and root penetration is ensured;
(2) manufacturing a parallel steel pipe and a diagonal bracing steel pipe: a single steel pipe with the outer diameter of 250 mm-350 mm and the wall thickness of 8 mm-12 mm is selected, and the processing length is 40-60 mm smaller than the design length, so that the lifting and the installation between piles are facilitated; according to the arrangement form, the spacing and the end node reinforcing requirement of the steel pipe piles, the processing length of the parallel steel pipe can be determined after drawing, and the end cutting is smooth and vertical to the pipe body of the steel pipe;
according to the arrangement form, the spacing and the parallel steel pipe arrangement position of the steel pipe piles, the processing length of the diagonal bracing steel pipe can be determined after drawing a drawing, and the end part is cut in an inclined mode to be smooth and vertical;
(3) manufacturing a flat-connected end fixing steel piece and an inclined strut end fixing steel piece: the flat-connected end fixing steel piece is machined by a steel pipe with the outer diameter being 300-400 mm larger than that of the flat-connected steel pipe, namely, one end of the flat-connected end fixing steel piece is cut by a punching machine die, the other end of the flat-connected end fixing steel piece is vertically cut by a cutting machine, and the steel pipe machining and cutting ensure that the effective supporting length of the flat-connected end fixing steel piece is at least 80mm, so that the pipe wall of the flat-connected end fixing steel piece is in good contact with a steel pipe pile, and welding is firm; the inclined strut end fixing steel piece is processed by a steel pipe with the outer diameter larger than that of the inclined strut steel pipe by one specification, one end of the inclined strut end fixing steel piece is cut by a punching machine die, the other end of the inclined strut end fixing steel piece is obliquely cut by a cutting machine, and the steel pipe processing and cutting ensure that the effective supporting length of the inclined strut end fixing steel piece is at least 80mm, so that the pipe wall of the inclined strut end fixing steel piece is in good contact with a steel pipe pile, and welding is firm; cutting the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece along the central line plane of the end fixing steel piece after the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece are processed, dividing the parallel end fixing steel piece into a parallel end supporting steel piece and a parallel end sealing steel piece, and dividing the inclined support end fixing steel piece into an inclined support end supporting steel piece and an inclined support end sealing steel piece;
(4) manufacturing supporting angle steel: and selecting 60-8 equilateral angle steel, and the length is at least 400mm.
The method for installing the steel pipe pile sinking comprises the following steps:
(1) the steel pipe pile construction adopts double-ship parallel operation, for example, barges are used, one ship is used as steel materials such as a transport ship for transporting and placing the steel pipe pile, and the other ship is used as a working ship for loading an automobile crane, a vibrating hammer with a hydraulic sharp nose pliers, a drilling machine and the like; after reaching the working surface position, the concrete ground anchor and the steel cable for the working ship are tied to fix the ship position and serve as a water surface hoisting operation platform;
(2) positioning the steel pipe pile: measuring, positioning and rechecking the positions of the steel pipe piles according to the design requirements of the arrangement form; the drilling machine drills a hole, and the automobile crane is matched with the electric vibration hammer to insert and punch the steel pipe pile.
(3) Strong-pressure implantable pile sinking: a hanging hole is reserved at the top end of the steel pipe pile lifted by the main hook of the automobile crane, and the steel pipe pile is slowly lifted to a measuring position and laid down; taking the influence of water flow into consideration, upstream pre-deflection can be performed by 3-4 cm; the steel pipe pile is kept in a vertical state, enters a river bed to a certain depth under the action of dead weight, can be kept in a vertical state in water, and after a main hook is separated from the steel pipe pile, a vibrating hammer is lifted and moved to the top of the steel pipe pile, and the pipe wall is clamped by a hydraulic sharp nose of the vibrating hammer; checking the vertical states of the steel pipe pile and the vibrating hammer, and beginning to insert and drive the pile sinking;
(4) and monitoring the pile sinking process, stopping the hammer when the penetration degree of the steel pipe pile is 1-3 cm/min when the steel pipe pile is vibrated into the riverbed under the vibration of the vibrating hammer after the plane position and the perpendicularity of the steel pipe pile are not changed when the depth of the steel pipe pile entering the riverbed meets the requirement and the steel pipe pile entering the riverbed is not less than 7m, and carrying out pile sinking construction of the next steel pipe pile 1. The pile sinking operation is completed, so that the triangular vertex angle of the arrangement of the steel pipe piles 1 is 100-130 degrees, and the distance between the steel pipe piles in the upstream surfaces on two sides is less than 5m; the end part is additionally provided with a steel pipe pile 1 to form an end part triangular structure, namely a built-in triangular reinforcing node, and the vertex angle of the end part triangular structure is required to be larger than 90 degrees.
The step C is characterized in that the connection and installation construction method between the steel pipe piles comprises the following steps: and (3) after the lowest position parallel connection is installed according to the principle from bottom to top, carrying out lower part oblique connection, middle parallel connection, upper part oblique connection, lifting and full-welded fixation of the top parallel connection. The upper and lower middle parallel joints can be properly adjusted according to the length of the steel pipe pile, namely, only one middle parallel joint is arranged. The specific method comprises the following steps:
(1) firstly, installing a lower parallel connection and an inclined strut between steel pipe piles of a vertex angle reinforcing node, then installing a lower parallel connection steel pipe and an inclined strut steel pipe between steel pipe piles of reinforcing nodes at the bottoms of two sides, realizing the stability of a built-in triangular node, and then installing connection between the steel pipe piles of other areas; installing upper parallel steel pipes and diagonal steel pipes in the sequence; the method comprises the steps of firstly carrying out parallel connection and oblique connection hoisting welding among four steel pipe piles in the top area of a triangular built-in flood drainage triangular structure system, then carrying out parallel connection and oblique connection hoisting welding among three steel pipe piles in the bottom area of two sides, and realizing triangular three-dimensional stability welding through parallel connection and oblique connection among a plurality of steel pipe piles at a node part. And (3) welding parallel and oblique joints between the steel pipe piles in other areas, and realizing triangular plane stability welding between the two steel pipe piles through parallel joints and oblique joints.
(2) Setting an operation platform: for the installation of the bottom parallel steel pipe 2, the diagonal bracing steel pipe 3, the parallel end fixing steel piece 4 and the diagonal bracing end fixing steel piece 5, a small-sized ship and a steel pipe pile are bound and fixed by ropes to serve as a welding operation platform; for the installation of the parallel steel pipes 2, the diagonal steel pipes 3, the parallel end fixing steel pieces 4 and the diagonal end fixing steel pieces 5 at the middle and upper parts, supporting angle steel 6 is vertically welded at the proper positions of the steel pipes 1; lifting steel parts such as I-steel and the like at right angles of the support angle steel 6, spot-welding and fixing the steel parts to serve as a temporary operation platform, and dismantling the temporary operation platform after connection and installation among piles are completed;
(3) and (3) mounting a parallel end support steel piece 7: welding arc ends of parallel end support steel pieces 7 at the joint positions of the steel pipe pile 1 and the parallel steel pipe 2 by adopting single-sided fillet welds, wherein the parallel end support steel pieces 7 at the two ends of the parallel steel pipe 2 are symmetrical and aligned with each other and are vertical to the steel pipe pile 1;
(4) and (3) mounting the parallel steel pipes 2: hoisting the parallel steel pipe 2, and symmetrically hoisting two ends of the parallel steel pipe 2 into a parallel end supporting steel piece 7; the vertical end of the parallel connection end part supporting steel piece 7 is welded and fixed with the parallel connection steel pipe 2;
(5) and (3) mounting a parallel end closure steel piece 8: lifting the parallel end closed steel piece 8, performing full-welding fixation on the arc end which is connected with the steel pipe pile 1, and performing full-welding fixation on the connection closure part of the parallel end closed steel piece 7; the parallel steel pipe 2 is welded with the parallel end closed steel piece 8 to prevent loosening;
(6) and (3) mounting the inclined end part supporting steel piece 9: arc ends of diagonal support end support steel pieces 9 are welded at joints of the steel pipe piles 1 and the diagonal support steel pipes 3 by adopting single-sided fillet welds, so that the arc inner sides of the diagonal support end support steel pieces 9 at two ends of the diagonal support steel pipes 3 are guaranteed to be on the same curved surface, and the angle between the diagonal support end support steel pieces 9 and the steel pipe piles 1 is deviated in an allowable range;
(7) and (3) installing a diagonal bracing steel pipe: lifting the inclined support steel pipe 3, placing two ends of the inclined support steel pipe on the installed inclined end support steel piece 9, and keeping the supporting lengths of the two ends of the inclined support steel pipe 3 consistent;
(8) the diagonal bracing end closure steel member 10 is installed: lifting the inclined strut end closed steel piece 10, fully welding and fixing the arc end which is connected with the steel pipe pile 1 and the closed position which is connected with the inclined strut end supporting steel piece 9; and the diagonal-bracing steel pipe 3 is welded with the diagonal-bracing end-closing steel member 10 to prevent loosening.
And D, cleaning floating objects:
the triangular built-in flood drainage triangular structure system resists impact during flood season, after certain floaters are intercepted, a barge and a small excavator are adopted, a 300-ton dredger is used as a carrier, a PC160 excavator is placed at the bow of the dredger, the dredger is matched with a grab bucket to be matched with a manual hook and sickle, floaters are cleaned and loaded into a ship, and the dredger is loaded on the shore and transported to a garbage stacking point.
And E, disassembling the flood drainage and drainage structure:
and (3) moving the ship loaded with the automobile crane and the vibrating hammer to a dismantling position, binding the parallel steel pipes, the diagonal steel pipes and the like by using the lifting rope, cutting off the connection between the parallel steel pipes, the diagonal steel pipes and the steel pipe piles from top to bottom, hoisting to a storage ship, and transporting to installation and stacking.
And the steel pipe pile is pulled out by adopting a mode of matching the lifting equipment with a vibrating hammer. The crane is provided with a vibrating hammer, the steel pipe pile 1 is clamped by a pile clamping device, and pile pulling is started. When the pile is pulled out, the pile body is vibrated for 1-2 min, so that the soil around the pile body is liquefied, and then the vibratory hammer is lifted to start pile pulling out. The steel pipe pile is pulled out once without being segmented, and the steel pipe pile is lifted onto a transport ship after being pulled out to finish the dismantling operation.
The flood drainage construction technology of the triangular built-in flood drainage triangular structure system has the advantages that flood season protection capability is enhanced, floating matters in water are blocked at the upstream positions of construction facilities such as a construction temporary bridge, a water operation steel platform and a cofferdam, direct impact of the floating matters on steel plates of the cofferdam and steel pipe piles of the temporary bridge is avoided, the safety performance of bridge construction facilities in flood season is improved, and accidents such as collapse of the construction temporary bridge facilities caused by impact or accumulation of the floating matters are avoided; and the built-in flood drainage triangular structure system of the triangle is applied to flood drainage construction technology, and the construction technology is matched with mechanical and manual cleaning to jointly clean up the intercepted garbage such as floating matters in water, so that the garbage on the water surface in the river area is reduced. The accumulation of floating matters on the downstream water surface is relieved to a certain extent, the damage of the floating matters to other facilities in the downstream water is reduced, the safety and the environmental protection are achieved, the requirement of environmental protection is met, and the effect is remarkable in the aspect of green construction.
Claims (3)
1. A construction method of a triangle built-in flood drainage triangular structure system is characterized by comprising the following steps of: the triangular built-in flood drainage triangular structure system is independently arranged in the upstream areas of the steel platform and the cofferdam section of the bridge; the triangular built-in flood drainage triangular structure system is mainly formed by arranging steel pipe piles in a vertex angle structure along a water facing surface, wherein the inner sides of the vertex angles and the inner sides of the bottoms of the two sides are respectively provided with one steel pipe pile to form an end triangular structure as a reinforcing node, and adjacent steel pipe piles are connected through a yoke, so that the triangular built-in flood drainage triangular structure system is formed; the steel pipe pile is vertically driven into a river bed, the upper part of the steel pipe pile is exposed out of the water surface for connection, and the lower part of the steel pipe pile is embedded into the rock soil of the river bed; the yoke comprises a parallel steel pipe and a diagonal steel pipe; the parallel steel pipe is connected with the adjacent steel pipe piles through parallel end fixing steel pieces, and the diagonal bracing steel pipe is connected with the adjacent steel pipe piles through diagonal bracing end fixing steel pieces; the vertex angle range of the triangular built-in flood drainage triangular structure system is 100-140 degrees; the vertex angle of the end triangular structure is an obtuse angle; the parallel connection end fixing steel piece is cut and divided into a lower parallel connection end supporting steel piece and an upper parallel connection end sealing steel piece along the central axis of the parallel connection end fixing steel piece; the inclined strut end fixing steel piece is cut and divided into a lower inclined strut end supporting steel piece and an upper inclined strut end sealing steel piece along the central axis of the inclined strut end fixing steel piece; the upper part of the steel pipe pile is provided with a supporting angle steel which is used for supporting the section steel and is used as a welding temporary working surface; the installation above the water surface of the parallel steel pipe is determined according to the water level and the elevation of the top of the steel pipe pile, and is arranged on the adjacent steel pipe pile in parallel according to an upper part, a middle part and a lower part, and the middle part adopts double-row parallel steel pipes; the inclined strut steel pipes are obliquely arranged on the adjacent steel pipe piles and positioned between the parallel steel pipes;
the construction process flow of the triangle built-in flood drainage and drainage triangle structure system is as follows: A. the method comprises the steps of on-site manufacturing of a steel member, pile sinking of a steel pipe pile, connection and installation among the steel pipe piles, cleaning of floaters, and disassembly of a built-in flood drainage triangular structure of a triangular;
and A, the operation key points of the on-site manufacturing of the steel member are as follows:
(1) lengthening the steel pipe pile: the steel pipe piles are formed by butt welding a plurality of steel pipe piles, the lengths of the steel pipe piles are determined according to the measured water depth, hydrology and meteorological conditions, pile extension on water is avoided, the depth of the steel pipe piles entering a river bed is ensured to meet anchoring requirements, and the height of the steel pipe piles exposed out of flood peak water surface in flood season is at least 1.5m; the steel pipe pile is selected from seamless steel pipes with phi 480-720 mm, deformed and damaged parts of the steel pipe pile are trimmed before lengthening and welding, oil stains and rust are removed from two sides of an interface, a corner grinder is used for polishing, and a welding groove is formed; the gap between the opposite openings of the upper section steel pipe pile and the lower section steel pipe pile is 2-4 mm, the verticality is corrected by using a theodolite, a copper clamp is arranged on the periphery of the top end of the lower section pile, and then electric welding is carried out; welding is conducted correspondingly, and three layers of pipe wall welding are conducted; during welding, the welding slag is removed in time after each layer of welding seam is welded, the joints of each layer of welding seam are staggered, the lining hoop is fully melted, and root penetration is ensured;
(2) manufacturing a parallel steel pipe and a diagonal bracing steel pipe: a single steel pipe with the outer diameter of 250 mm-350 mm and the wall thickness of 8 mm-12 mm is selected, and the processing length is 40-60 mm smaller than the design length, so that the lifting and the installation between piles are facilitated; according to the arrangement form, the spacing and the end node reinforcing requirement of the steel pipe piles, the processing length of the parallel steel pipe is determined after drawing, and the end cutting is smooth and vertical to the pipe body of the steel pipe;
according to the arrangement form, the spacing and the parallel steel pipe arrangement position of the steel pipe piles, drawing a drawing to determine the processing length of the inclined support steel pipe, and cutting the end part obliquely and flatly to keep the vertical direction;
(3) manufacturing a flat-connected end fixing steel piece and an inclined strut end fixing steel piece: the flat-connected end fixing steel piece is machined by adopting a steel pipe with the outer diameter larger than that of the flat-connected steel pipe by one specification, one end of the flat-connected end fixing steel piece is cut by adopting a punching machine die, the other end of the flat-connected end fixing steel piece is vertically cut by adopting a cutting machine, and the steel pipe machining and cutting ensure that the effective supporting length of the flat-connected end fixing steel piece is at least 80mm, so that the pipe wall of the flat-connected end fixing steel piece is in good contact with a steel pipe pile, and the welding is firm; the inclined strut end fixing steel piece is processed by a steel pipe with the outer diameter larger than that of the inclined strut steel pipe by one specification, one end of the inclined strut end fixing steel piece is cut by a punching machine die, the other end of the inclined strut end fixing steel piece is obliquely cut by a cutting machine, and the steel pipe processing and cutting ensure that the effective supporting length of the inclined strut end fixing steel piece is at least 80mm, so that the pipe wall of the inclined strut end fixing steel piece is in good contact with a steel pipe pile, and welding is firm; cutting the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece along the central line plane of the end fixing steel piece after the end parts of the parallel end fixing steel piece and the inclined support end fixing steel piece are processed, dividing the parallel end fixing steel piece into a parallel end supporting steel piece and a parallel end sealing steel piece, and dividing the inclined support end fixing steel piece into an inclined support end supporting steel piece and an inclined support end sealing steel piece;
(4) manufacturing supporting angle steel: and selecting 60-8 equilateral angle steel, and the length is at least 400mm.
2. The construction method of the triangular built-in flood drainage triangular structure system according to claim 1, which is characterized by comprising the following steps: the method for installing the steel pipe pile sinking comprises the following steps:
(1) the construction of the steel pipe piles adopts double-ship parallel operation, one ship is used as a transport ship for transporting and placing the steel pipe piles, and the other ship is used as a working ship for loading an automobile crane, a vibrating hammer with a hydraulic sharp nose pliers and a drilling machine; after reaching the position of the working surface, the ground anchor and the steel cable for the working ship are tied to fix the ship position and serve as a water surface hoisting operation platform;
(2) positioning the steel pipe pile: measuring, positioning and rechecking the positions of the steel pipe piles according to the design requirements of the arrangement form; drilling holes by a drilling machine, and performing steel pipe pile inserting and driving positioning by an automobile crane in cooperation with an electric vibrating hammer;
(3) strong-pressure implantable pile sinking: lifting the steel pipe pile by the main hook of the automobile crane, and slowly lifting to a measuring position to put down the steel pipe pile; taking the influence of water flow into consideration, upstream pre-biasing by 3-4 cm; the steel pipe pile is kept in a vertical state, enters a river bed to a certain depth under the action of dead weight, can be kept in a vertical state in water, and after a main hook is separated from the steel pipe pile, a vibrating hammer is lifted and moved to the top of the steel pipe pile, and the pipe wall is clamped by a hydraulic sharp nose of the vibrating hammer; checking the vertical states of the steel pipe pile and the vibrating hammer, and beginning to insert and drive the pile sinking;
(4) monitoring the pile sinking process, stopping the hammer when the penetration degree of the steel pipe pile is 1-3 cm/min when the steel pipe pile is vibrated into the river bed under the vibration of the vibrating hammer after the depth of the steel pipe pile entering the river bed meets the requirements and the plane position and the verticality of the steel pipe pile are not changed, and carrying out pile sinking construction of the next steel pipe pile; completing pile sinking operation, so that the vertex angle of the arrangement of the steel pipe piles is 100-130 degrees, and the distance between the steel pipe piles in the upstream surfaces on two sides is less than 5m; the end part is additionally provided with a steel pipe pile to form an end part triangular structure, namely a built-in triangular reinforcing node, and the vertex angle of the end part triangular structure is required to be larger than 90 degrees.
3. The construction method of the triangular built-in flood drainage triangular structure system according to claim 2, which is characterized by comprising the following steps:
the step C is characterized in that the connection and installation construction method between the steel pipe piles comprises the following steps:
(1) firstly, installing a lower parallel connection and an inclined strut between steel pipe piles of a vertex angle reinforcing node, then installing a lower parallel connection steel pipe and an inclined strut steel pipe between steel pipe piles of reinforcing nodes at the bottoms of two sides, realizing the stability of a built-in triangular node, and then installing connection between the steel pipe piles of other areas; installing upper parallel steel pipes and diagonal steel pipes in the sequence;
(2) setting an operation platform: for the installation of the bottom parallel steel pipe, the inclined strut steel pipe, the parallel end fixing steel piece and the inclined strut end fixing steel piece, a small ship and a steel pipe pile are bound and fixed by ropes to serve as a welding operation platform; for the installation of the parallel steel pipes, the diagonal steel pipes, the parallel end fixing steel pieces and the diagonal end fixing steel pieces at the middle and upper parts, supporting angle steel is vertically welded at the proper positions of the steel pipes; lifting the I-steel piece at right angles of the support angle steel, fixing the I-steel piece as a temporary operation platform by spot welding, and dismantling the temporary operation platform after connection and installation between piles are completed;
(3) and (3) mounting a parallel end support steel piece: welding arc ends of the parallel end support steel pieces at the joint positions of the steel pipe piles and the parallel steel pipes by adopting single-sided fillet welds, wherein the parallel end support steel pieces at the two ends of the parallel steel pipes are symmetrical and aligned with each other and are vertical to the steel pipe piles;
(4) and (3) installing parallel steel pipes: hoisting the parallel steel pipes, wherein two ends of the parallel steel pipes are symmetrically hoisted into the support steel pieces at the end parts of the parallel steel pipes; the vertical end of the parallel connection end part supporting steel piece is welded and fixed with the parallel connection steel pipe;
(5) and (3) mounting a parallel end-sealing steel piece: lifting the flat-connected end closed steel piece, fully welding and fixing the arc end connected with the steel pipe pile, and fully welding and fixing the joint and closure position of the flat-connected end supporting steel piece; the parallel steel pipe is welded with the closed steel piece at the end part of the parallel steel pipe, so that looseness is prevented;
(6) and (3) mounting a diagonal end supporting steel member: welding the arc end of the inclined strut end supporting steel piece at the joint of the steel pipe pile and the inclined strut steel pipe by adopting a single-sided fillet weld, so as to ensure that the arc inner sides of the inclined strut end supporting steel pieces at the two ends of the inclined strut steel pipe are on the same curved surface, and the angle deviation between the inclined strut end supporting steel piece and the steel pipe pile is within an allowable range;
(7) and (3) installing diagonal bracing steel pipes: lifting the inclined support steel pipe, wherein two ends of the inclined support steel pipe are placed on the installed inclined end supporting steel piece, and the supporting lengths of the two ends of the inclined support steel pipe are kept consistent;
(8) and (3) installing inclined strut end sealing steel parts: lifting the inclined strut end closed steel piece, fully welding and fixing the arc end connected with the steel pipe pile, and fully welding and fixing the joint and closure position of the inclined strut end supporting steel piece; and the inclined strut steel pipe is welded with the inclined strut end sealing steel piece to prevent loosening.
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| CN112853945A (en) * | 2021-03-12 | 2021-05-28 | 潘英杰 | Composite pier anti-scour construction method |
| CN113216227A (en) * | 2021-04-22 | 2021-08-06 | 浙大城市学院 | Construction method of steel cofferdam in complex turbulent water area |
| CN215442042U (en) * | 2021-04-25 | 2022-01-07 | 中国长江三峡集团有限公司 | Anti-scouring device for offshore wind power single-pile foundation |
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| CN112853945A (en) * | 2021-03-12 | 2021-05-28 | 潘英杰 | Composite pier anti-scour construction method |
| CN113216227A (en) * | 2021-04-22 | 2021-08-06 | 浙大城市学院 | Construction method of steel cofferdam in complex turbulent water area |
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| CN114991068A (en) | 2022-09-02 |
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