CN114561873A - Bridge high pier construction method - Google Patents
Bridge high pier construction method Download PDFInfo
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- CN114561873A CN114561873A CN202210257561.4A CN202210257561A CN114561873A CN 114561873 A CN114561873 A CN 114561873A CN 202210257561 A CN202210257561 A CN 202210257561A CN 114561873 A CN114561873 A CN 114561873A
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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
- 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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- 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
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a construction method of a high pier of a bridge, which comprises the following specific steps: 1) constructing a bearing platform; 2) constructing pier column steel bars; 3) constructing a pier column template; 4) pouring construction; 5) and (5) maintaining the pier stud. According to the invention, the pier stud main reinforcement is connected with the steel pipe frame through the telescopic rod, so that the phenomenon of upward floating of the steel bar during the pouring of the bearing platform is prevented, and the construction precision of the pier stud embedded main reinforcement is improved; the upper-layer steel reinforcement cage is temporarily welded and fixed through the fixing frame, the bracket rib is arranged on the fixing frame and arranged on the upper portion of the welding line, one end of the telescopic rod is connected with the hoop ear plate, and the hoop ear plate and the hoop body provide a temporary working platform for steel reinforcement cage welding construction and reduce the construction difficulty of welding the upper-layer steel reinforcement cage; the pier stud is provided with a tie beam anchor ear formwork supporting system and a steel formwork opposite-pulling self-stabilizing system, so that the formwork construction is convenient and rapid; and a cold joint template is adopted when concrete is poured for several times, and super-poured concrete is recovered from the slurry leakage hole, so that cold joint chiseling construction is reduced.
Description
Technical Field
The invention relates to a method for constructing a high pier of a bridge, which is mainly suitable for the construction of the high pier of an urban viaduct.
Background
With the advance of the urbanization process, various developments of cities can not leave the highway bridge, and the improvement of the construction level of the highway bridge is promoted. The increase of vehicles puts forward higher requirements on the quality of highway bridges, and the construction difficulty of high piers of the highway bridges is increased to a certain extent. The construction of the high pier becomes the best to ensure the engineering quality.
The high pier construction is an important construction content of a highway bridge, and the construction can meet the following construction problems: (1) the anti-floating effect on the embedded ribs of the pier stud during the pouring construction of the bearing platform causes the inaccurate positioning of the main ribs of the pier stud; (2) the control of the flower vase pier template is not accurate; (3) the problem of temporary stability during temporary welding of the upper-layer reinforcement cage is solved; (4) cold seam treatment construction; (5) and (5) spraying and curing construction of the high pier.
In view of this, aiming at a series of problems occurring during high pier construction, the invention of a simple and effective bridge high pier structure is urgently needed to meet the requirement of high pier construction quality control, and particularly for urban overhead high pier construction, the bridge high pier structure has the advantages of remarkably saving construction cost and accelerating construction progress.
Disclosure of Invention
The invention aims to meet the requirement of high pier construction quality control, and particularly has the advantages of remarkably saving construction cost and accelerating construction progress for urban overhead high pier construction.
In order to realize the technical purpose, the invention adopts the following technical scheme:
a construction method of a bridge high pier comprises the following specific steps:
1) constructing a bearing platform; before the bearing platform is poured, arranging a steel pipe frame around the pouring position of the bearing platform, then binding main reinforcements of the bearing platform and connecting reinforcements, obtaining a bearing platform framework after binding, binding main reinforcements of a pier column on the bearing platform framework, fixing the main reinforcements of the pier column by using steel wires, connecting the main reinforcements of the pier column at the outermost side with the steel pipe frame through a connecting telescopic rotating rod, then pouring the bearing platform, and forming embedded main reinforcements at the bottom of the pier column by extending the main reinforcements of the pier column out of the bearing platform after pouring;
2) constructing pier column steel bars; hoisting the upper-layer steel reinforcement cage to a position butted with the embedded main reinforcement at the bottom of the pier stud through a hoisting tool, temporarily welding and fixing the upper-layer steel reinforcement cage through a fixing frame, welding the main reinforcements on the upper-layer steel reinforcement cage with the embedded main reinforcements at the bottom of the pier stud one by one, and removing the fixing frame after welding is finished;
3) constructing a pier column template; installing steel templates outside the upper-layer steel reinforcement cage, assembling and molding the steel templates through oppositely pulling first bolts, fixing the steel template systems on two sides by oppositely pulling second bolts, and arranging a tie beam anchor ear template at the tie beam;
4) pouring construction; a cold joint template is installed before cold joint pouring, the cold joint template is installed on a steel template, the cold joint template consists of a template body and a slurry leakage template, and slurry leakage holes are formed in the slurry leakage template;
5) maintaining the pier stud; the pier stud is provided with maintenance equipment after demoulding, the two sides of the maintenance equipment are connected with a rope drum through a steel wire rope, the rope drum is arranged on the two sides of the pier stud, a motor is arranged on the rope drum, a maintenance frame is arranged around the pier stud, a pulley is arranged on the maintenance frame, the steel wire rope bypasses the pulley, a water collecting ditch is arranged below the pier stud, and anti-seepage cloth is paved in the water collecting ditch.
2. The construction method of the high pier of the bridge according to claim 1, wherein in the step 1), one end of the connecting telescopic rotary rod is connected with the pier stud main rib, and the other end of the connecting telescopic rotary rod is connected with the steel pipe frame through a connecting fastener.
Preferably, in the step 2), pre-buried fixing parts are arranged around a hoisting site, the upper-layer steel reinforcement cage is connected with the pre-buried fixing parts around through guy cables, chain blocks are arranged on the guy cables, and the length of each guy cable is adjusted through the chain blocks, so that the position of the upper-layer steel reinforcement cage is controlled.
Preferably, in the step 2), when the upper-layer reinforcement cage is hoisted, a laser positioning instrument is installed on the upper-layer reinforcement cage, the position of the upper-layer reinforcement cage is detected through the laser positioning instrument, and the position of the upper-layer reinforcement cage is controlled in an auxiliary manner.
Preferably, in the step 2), the fixing frame comprises an anchor ear body and a telescopic rod, a plurality of bracket ribs are arranged on the inner side of the anchor ear body, a plurality of anchor ear plates are arranged on the outer side of the anchor ear body, one end of the telescopic rod is connected with the anchor ear plates, and the other end of the telescopic rod is fixed on the bearing platform; when the upper-layer reinforcement cage is temporarily welded and fixed through the fixing frame, the upper-layer reinforcement cage is hung into the fixing frame, the upper-layer reinforcement cage is supported through a bracket rib on the hoop body, and the bracket rib and the upper-layer reinforcement cage are temporarily welded and fixed; the fixed height of the upper-layer steel reinforcement cage is adjusted by adjusting the height of the telescopic rod, so that the main reinforcements on the upper-layer steel reinforcement cage are aligned with the embedded main reinforcements at the bottom of the pier stud one by one.
Preferably, the hoop body is composed of two half bodies, one ends of the two half bodies are hinged, the other ends of the two half bodies are respectively provided with a hoop connecting port, and the hoop connecting ports on the two half bodies can be connected through bolts.
Preferably, in the step 5), the steel molding plate is provided with a connecting plate, and the steel molding plate is connected with the cold seam molding plate through bolts.
Preferably, in the step 5), the slip-resistant lines and the reinforcing plate are arranged on the slurry leaking template.
The invention has the following characteristics and beneficial effects:
1. the telescopic rod for the pier stud main reinforcement is connected with the steel pipe frame, so that the phenomenon that the steel bar floats upwards when the bearing platform is poured is avoided, and the construction precision of the embedded main reinforcement of the pier stud is improved.
2. The upper steel reinforcement cage passes through mount welded fastening temporarily, sets up the bracket muscle on the mount, and the bracket muscle sets up in welding seam upper portion, and telescopic link one end is connected with the staple bolt otic placode, and the staple bolt otic placode provides interim work platform for steel reinforcement cage welding construction, has reduced the upper steel reinforcement cage welded construction degree of difficulty.
3. The pier stud is provided with the tie beam anchor ear formwork supporting system and the steel formwork opposite-pulling self-stabilizing system, so that the formwork construction is convenient and rapid.
4. When the concrete is poured for multiple times, the cold joint template is adopted, and the super-poured concrete is recycled from the grout leakage hole, so that the construction of removing the cold joint by chiseling is reduced.
5. The pier stud is provided with maintenance equipment after demoulding, and intelligent pier stud maintenance operation is realized.
Drawings
Fig. 1 is a schematic drawing of a pier stud template of the present invention;
FIG. 2 is a schematic diagram of hoisting of an upper-layer reinforcement cage;
FIG. 3 is a schematic view of the temporary fixing of the upper layer reinforcement cage during welding;
FIG. 4 is a schematic view of the structure of the fixing frame;
FIG. 5 is a schematic structural view of a cold-seam template;
FIG. 6 is a schematic view of temporary fixing of a steel bar structure of a bearing platform;
fig. 7 is a schematic view of the pier curing apparatus.
Wherein: 1. bearing platform, 2, counter-pull first bolt, 3, counter-pull second bolt, 4, beam tying hoop template, 5, steel template, 6, hoisting tool, 7, steel rope, 8, cable wind rope, 9, chain block, 10, pre-embedded fixing piece, 11, laser locator, 12, hoisting reinforcing rib, 13, upper reinforcing cage, 14, hoop connecting position, 15, hoop lug, 16, telescopic rod, 17, pier column bottom pre-embedded main rib, 18, welding seam, 19, hoop body, 20, hoop rib, 21, hoop connecting port, 22, bracket rib, 23, anti-slip pattern, 24, reinforcing plate, 25, template body, 26, bolt connection, 27 connecting plate, 28, slurry leakage hole, 29, pulley, 30 steel rope, 31, rope cylinder, 32, motor, 33, water collecting ditch, 34, anti-seepage cloth, 38, maintenance equipment, 39, steel pipe connection fastener, 40, steel pipe frame, 41, connecting rib, 42, bearing platform main rib, and anti-seepage cloth, 43. Pier column main reinforcement, 44, connecting telescopic rotary rods, 45 pier columns, 46, fixing frames, 47 steel wires, 48 tie beams, 49 cold joint templates, 50 slurry leaking templates, 51 maintenance frames and 52 concrete.
Detailed Description
Example one
The bridge high pier structure comprises a bearing platform 1, a pier stud 45, an upper layer steel reinforcement cage 13, a steel template 5, maintenance equipment 38, an upper layer steel reinforcement cage 13, a fixing frame 46 and the like, and further comprises a steel reinforcement framework positioning device, a hoisting positioning device and a pier stud maintenance spraying system.
As shown in fig. 6, after the cushion cap main reinforcement 42, the connecting reinforcement 41 and the pier stud main reinforcement 43 are bound, the adjacent pier stud main reinforcements 43 are connected and fixed by the steel wire 47, the pier stud main reinforcement 43 is vertically arranged, and the pier stud main reinforcement 43 at the outermost side is fixed by the steel reinforcement framework positioning device. Specifically, the steel reinforcement framework positioning device comprises a steel pipe frame 40 arranged around the bearing platform 1 and a connecting telescopic rotary rod 44, wherein the pier column main reinforcement 43 at the outermost side is connected with the steel pipe frame 40 through the connecting telescopic rotary rod 44. Specifically, one end of the connecting telescopic rotary rod 44 is connected with the pier stud main rib 43, and the other end of the connecting telescopic rotary rod 44 is provided with a connecting fastener 39 and is connected with the steel pipe frame 10 through the connecting fastener 39. Because the main pier stud reinforcement 43 at the outermost side is connected with the steel pipe frame 40 through the connecting telescopic rotary rod 44, the bearing platform main reinforcement 42, the connecting reinforcement 41 and the main pier stud reinforcement 43 are fixed, then the bearing platform is poured, and after the pouring of the bearing platform is completed, the part of the main pier stud reinforcement 43 extending out of the bearing platform forms the embedded main pier stud reinforcement 17 at the bottom of the pier. The pier column main reinforcement is connected with the steel pipe frame 10 through the connecting telescopic rotary rod 44, the phenomenon that the steel bar floats upwards when the bearing platform is poured is prevented, and the construction precision of the pier column embedded main reinforcement is improved.
As shown in fig. 2, the upper steel reinforcement cage 13 is hoisted by the hoisting tool 6, the steel rope 7 is connected with the hoisting reinforcing ribs 12 and the hoisting tool 6 which are arranged on the upper steel reinforcement cage 13, the upper steel reinforcement cage 13 is accurately hoisted by the hoisting positioning device, the hoisting positioning device comprises embedded fixing pieces 10 which are arranged on the periphery of a hoisting site, the upper steel reinforcement cage 13 is connected with the embedded fixing pieces 10 on the periphery through a guy rope 8, and a chain block 9 is arranged on the guy rope 8. During hoisting, the upper-layer steel reinforcement cage 13 is provided with the laser positioning instrument 11, the laser positioning instrument 11 is the prior art, and the laser positioning instrument 11 is used for detecting the position of the upper-layer steel reinforcement cage 13. Wherein, the hoisting tool 6 can be a crane, etc. And stirrups 20 are arranged on the outer side of the upper-layer reinforcement cage 13 in a surrounding manner.
As shown in fig. 3 and 4, the fixing frame 46 includes an anchor ear body 19 and a telescopic rod 16, the inner side of the anchor ear body 19 is provided with a bracket rib 22, the outer side of the anchor ear body 19 is provided with a plurality of anchor ear plates 15, one end of the telescopic rod 16 is connected with the anchor ear plates 15, and the other end is fixed on the bearing platform 1. The upper-layer steel reinforcement cage 13 is temporarily welded and fixed through the fixing frame 46 during hoisting, main reinforcements on the upper-layer steel reinforcement cage 13 are welded with the embedded main reinforcements 17 at the bottom of the pier column one by one, and a welding seam 18 is formed at the joint of the upper-layer steel reinforcement cage 13 and the embedded main reinforcements 17 at the bottom of the pier column. The bracket rib 22 is provided on the upper portion of the weld 18.
The hoop body 19 is composed of two half bodies, one ends of the two half bodies are hinged to each other at a hoop connecting position 14, hoop connecting ports 21 are arranged at the other ends of the two half bodies, and the hoop connecting ports 21 on the two half bodies can be connected through bolts.
As shown in fig. 1, the steel form 5 is assembled by oppositely pulling the first bolts 2 to form a steel form assembly, the steel form assemblies on two sides are fixedly connected by oppositely pulling the second bolts 3, the tie beam 48 is provided with a tie beam anchor ear form 4, and the tie beam anchor ear form 4 is arranged between the two steel form assemblies.
As shown in fig. 5, the steel form 5 is connected with a cold joint form 49 by bolts 27, the cold joint form 49 is connected above the steel form 5, the steel form 5 is provided with a connecting plate 7, the cold joint form 49 is composed of a form body 25 and a slurry leaking form 50, the slurry leaking form 50 is provided with slurry leaking holes 28, and the slurry leaking form is provided with anti-skid grains 23 and a reinforcing plate 24.
As shown in fig. 7, the pier stud 45 is provided with a pier stud maintenance spraying system after demolding, the pier stud maintenance spraying system comprises a maintenance device 38, specifically, the maintenance device 38 is an operation platform, a through groove is formed in the middle of the operation platform, and the pier stud 45 penetrates through the through groove. Two sides of the maintenance equipment 38 are connected with a rope drum 31 through a steel wire rope 30, the rope drum 31 is positioned on two sides of the pier stud, a motor 32 is arranged on the rope drum 31, a maintenance frame 51 is arranged around the pier stud 45, a pulley 29 is arranged on the maintenance frame 51, the steel wire rope 30 bypasses the pulley 29, a water collecting ditch 33 is arranged below the pier stud 45, and impermeable cloth 34 is paved in the water collecting ditch 33. In this embodiment, the water collecting channels 33 are disposed at both sides of the pier stud 45. The motor 32 drives the rope drum 31 to rotate, so that the steel wire rope is wound and unwound, and the maintenance equipment 38 is lifted and lowered.
Example two
A construction method of a bridge high pier structure comprises the following steps:
(1) constructing a bearing platform; before the bearing platform is poured, arranging steel pipe frames 40 around the pouring position of the bearing platform 1, then binding main bearing platform ribs 42 and connecting ribs 41, binding the main bearing platform ribs 42 and the connecting ribs 41 in a transversely and longitudinally staggered mode, obtaining a bearing platform framework after binding, binding main pier column ribs 43 on the bearing platform framework, fixing the main pier column ribs 43 by steel wires 47, connecting the main pier column ribs 43 on the outermost side with the steel pipe frames 40 through connecting telescopic rotary rods 44, connecting one ends of the connecting telescopic rotary rods 44 with the main pier column ribs 43, and connecting the other ends of the connecting telescopic rotary rods with the steel pipe frames 40 through connecting fasteners 39; and then pouring the bearing platform, wherein after pouring, the part of the pier stud main rib 43 extending out of the bearing platform forms a pier stud bottom embedded main rib 17.
(2) Constructing pier column steel bars; the construction of the upper layer reinforcement cage 13 is controlled by adopting a hoisting tool 6 matched with a cable rope 8; arranging embedded fixing pieces 10 around a hoisting site, connecting an upper-layer steel reinforcement cage 13 with the embedded fixing pieces 10 around through a guy rope 8, arranging a chain block 9 on the guy rope 8, and adjusting the length of each guy rope 8 through the chain block 9 so as to control the position of the upper-layer steel reinforcement cage 13; the upper-layer reinforcement cage 13 is provided with the laser positioning instrument 11, auxiliary positioning is carried out by the laser positioning instrument 11, the fixing frame 46 is adopted for temporary welding and fixing, the fixing frame 46 is provided with the hoop body 19 and the bracket rib 22, the bracket rib 22 is arranged at the upper part of the welding line 18 and is positioned at the inner side of the hoop body 19, and one end of the telescopic rod 16 is connected with the hoop ear plate 15 on the hoop body 19; when the upper-layer reinforcement cage 13 is temporarily welded and fixed through the fixing frame 46, the upper-layer reinforcement cage 13 is hung into the fixing frame 46, the upper-layer reinforcement cage 13 is supported through the bracket ribs 22 on the hoop body 19, and the bracket ribs 22 are temporarily welded and fixed with the upper-layer reinforcement cage 13; the fixed height of the upper-layer steel reinforcement cage 13 is adjusted by adjusting the height of the telescopic rod 16, so that the main reinforcements on the upper-layer steel reinforcement cage 13 are aligned with the embedded main reinforcements 17 at the bottom of the pier column one by one, the main reinforcements on the upper-layer steel reinforcement cage 13 are welded with the embedded main reinforcements 17 at the bottom of the pier column one by one, and then the fixing frame 46 is detached.
(3) Constructing a pier column template; install steel form 5 in the upper steel reinforcement cage 13 outside, the shaping is assembled through split first bolt 2 to steel form 5, makes both sides steel form system fixed with split second bolt 2, sets up tie beam staple bolt template 4 in 48 departments of tie beam. The upper reinforcement cage 13 is located in the steel form 5.
(4) Pouring construction; the method comprises the following steps that a cold joint template is installed before cold joint pouring, a steel template 5 is connected with the cold joint template 49 through bolts 27, the cold joint template 49 is installed on the steel template 5, the steel template 5 is provided with a connecting plate 7, the cold joint template 49 is composed of a template body 25 and a slurry leaking template 50, a slurry leaking hole 28 is formed in the slurry leaking template 50, and anti-skidding patterns 23 and reinforcing plates 24 are arranged on the slurry leaking template;
(5) maintaining the pier stud; after demolding, the pier stud 45 is provided with a maintenance device 38, two sides of the maintenance device 38 are connected with a rope drum 31 through a steel wire rope 30, the rope drum 31 is arranged on two sides of the pier stud 45, a motor 32 is arranged on the rope drum 31, a maintenance frame 51 is arranged around the pier stud 45, a pulley 29 is arranged on the maintenance frame 51, the steel wire rope 30 bypasses the pulley 29, a water collecting ditch 33 is arranged below the pier stud 45, and anti-seepage cloth 34 is paved in the water collecting ditch 33.
Claims (8)
1. The construction method of the high pier of the bridge is characterized by comprising the following specific steps:
1) constructing a bearing platform; before the bearing platform is poured, arranging steel pipe frames (40) around the pouring position of the bearing platform (1), then binding main ribs (42) and connecting ribs (41) of the bearing platform, obtaining a bearing platform framework after binding, binding main pier column ribs (43) on the bearing platform framework, fixing the main pier column ribs (43) by steel wires (47), connecting the main pier column ribs (43) on the outermost side with the steel pipe frames (10) through connecting telescopic rotary rods (44), then pouring the bearing platform, and forming embedded main pier column ribs (17) by extending the main pier column ribs (43) out of the bearing platform;
2) constructing pier column steel bars; hoisting the upper-layer steel reinforcement cage (13) to a position butted with the embedded main reinforcement (17) at the bottom of the pier stud through a hoisting tool (6), temporarily welding and fixing the upper-layer steel reinforcement cage and the embedded main reinforcement (17) at the bottom of the pier stud through a fixing frame (46), welding the main reinforcement on the upper-layer steel reinforcement cage (13) with the embedded main reinforcement (17) at the bottom of the pier stud one by one, and removing the fixing frame (46) after welding is completed;
3) constructing a pier column template; installing steel templates (5) on the outer sides of the upper-layer reinforcement cages (13), assembling and forming the steel templates (5) through oppositely pulling first bolts (2), fixing the steel template systems on two sides by oppositely pulling second bolts (2), and arranging tie beam anchor ear templates (4) at tie beams (48);
4) pouring construction; a cold joint template (49) is installed before cold joint pouring, the cold joint template (49) is installed on a steel template (5), the cold joint template (49) consists of a template body (25) and a slurry leakage template (50), and slurry leakage holes (28) are formed in the slurry leakage template (50);
5) maintaining the pier stud; pier stud (45) sets up maintenance equipment (38) after the drawing of patterns, the both sides of maintenance equipment (38) are connected with rope reel (31) with wire rope (30), rope reel (31) set up the both sides at pier stud (45), set up motor (32) on rope reel (31), set up maintenance frame (51) around pier stud (45), set up pulley (29) on maintenance frame (51), wire rope (30) are walked around pulley (29), set up catch basin (33) under pier stud (45), catch basin (33) interior anti-seepage cloth (34) of spreading.
2. The construction method of the high pier of the bridge according to claim 1, wherein in the step 1), one end of the connecting telescopic rotary rod (44) is connected with the pier stud main rib (43), and the other end is connected with the steel pipe frame (40) through the connecting fastener (39).
3. The construction method of the bridge high pier according to claim 1, wherein in the step 2), embedded fixing pieces (10) are arranged around a hoisting site, the upper layer reinforcement cage (13) is connected with the embedded fixing pieces (10) through cable ropes (8), chain blocks (9) are arranged on the cable ropes (8), and the lengths of the cable ropes (8) are adjusted through the chain blocks (9), so that the position of the upper layer reinforcement cage (13) is controlled.
4. The construction method for the high pier of the bridge according to claim 1, wherein in the step (2), when the upper reinforcement cage (13) is hoisted, a laser locator (11) is installed on the upper reinforcement cage (13), and the position of the upper reinforcement cage (13) is detected through the laser locator (11) to assist in controlling the position of the upper reinforcement cage (13).
5. The construction method of the high pier of the bridge according to claim 1, wherein in the step 2), the fixing frame (46) comprises an anchor ear body (19) and a telescopic rod (16), a plurality of bracket ribs (22) are arranged on the inner side of the anchor ear body (19), a plurality of anchor ear plates (15) are arranged on the outer side of the anchor ear body (19), one end of the telescopic rod (16) is connected with the anchor ear plates (15), and the other end of the telescopic rod is fixed on the bearing platform (1); when the upper-layer reinforcement cage (13) is temporarily welded and fixed through the fixing frame (46), the upper-layer reinforcement cage (13) is hung into the fixing frame (46), the upper-layer reinforcement cage (13) is supported through the bracket rib (22) on the hoop body (19), and the bracket rib (22) and the upper-layer reinforcement cage (13) are temporarily welded and fixed; the fixed height of the upper-layer steel reinforcement cage (13) is adjusted by adjusting the height of the telescopic rod (16), so that main reinforcements on the upper-layer steel reinforcement cage (13) are aligned with pre-buried main reinforcements (17) at the bottom of the pier column one by one.
6. The construction method of the high pier of the bridge according to claim 5, wherein the hoop body (19) is composed of two half bodies, one end of each half body is hinged to the other end of each half body, a hoop connecting port (21) is arranged at the other end of each half body, and the hoop connecting ports (21) on the two half bodies are connected through bolts.
7. The construction method of the high pier of the bridge according to the claim 1, wherein in the step 5), the steel form (5) is provided with the connecting plate (7), and the steel form (5) and the cold seam form (49) are connected by the bolts (27).
8. The construction method for the high pier of the bridge according to the claim 1, wherein in the step (5), the slip-resistant patterns (23) and the reinforcing plates (24) are arranged on the slip-resistant formworks.
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| CN202210257561.4A CN114561873B (en) | 2022-03-16 | 2022-03-16 | Bridge high pier construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110423A (en) * | 2022-06-24 | 2022-09-27 | 保利长大工程有限公司 | Rectangular pier construction process |
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| CN205676897U (en) * | 2016-06-22 | 2016-11-09 | 中国葛洲坝集团第五工程有限公司 | One is positioned at original ground following pier stud constructing device |
| CN106677069A (en) * | 2016-12-28 | 2017-05-17 | 杭州江润科技有限公司 | Construction method for overall formwork one-time forming structure of pier |
| JP2018135688A (en) * | 2017-02-22 | 2018-08-30 | 三井住友建設株式会社 | Bridge pier and construction method thereof |
| WO2020001156A1 (en) * | 2018-06-29 | 2020-01-02 | 比亚迪股份有限公司 | Bridge and bridge pier thereof |
| CN109958061A (en) * | 2019-04-12 | 2019-07-02 | 北京市政建设集团有限责任公司 | A kind of working reinforcement installation method |
| CN111206493A (en) * | 2020-03-06 | 2020-05-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Construction method for improving yield of pier stud steel bar protection layer and template device used by same |
| CN111379219A (en) * | 2020-04-20 | 2020-07-07 | 中铁四局集团第二工程有限公司 | Assembly type bridge pier column and bearing platform connecting structure and construction method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115110423A (en) * | 2022-06-24 | 2022-09-27 | 保利长大工程有限公司 | Rectangular pier construction process |
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