CN110468713B - Dual-purpose device used as pier column template and prestressed support and construction method thereof - Google Patents
Dual-purpose device used as pier column template and prestressed support and construction method thereof Download PDFInfo
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- CN110468713B CN110468713B CN201910728018.6A CN201910728018A CN110468713B CN 110468713 B CN110468713 B CN 110468713B CN 201910728018 A CN201910728018 A CN 201910728018A CN 110468713 B CN110468713 B CN 110468713B
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 76
- 239000010959 steel Substances 0.000 claims abstract description 76
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000009432 framing Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 230000006378 damage Effects 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims description 2
- 238000003860 storage Methods 0.000 claims description 2
- 210000002435 tendon Anatomy 0.000 claims 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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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
-
- 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
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2101/00—Material constitution of bridges
- E01D2101/20—Concrete, stone or stone-like material
- E01D2101/24—Concrete
- E01D2101/26—Concrete reinforced
- E01D2101/28—Concrete reinforced prestressed
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a dual-purpose device used as a pier column template and a prestress support and a construction method thereof. And then constructing a capping beam body, after curing is completed, sequentially removing the disc buckle support and the Bailey sheet, and finally placing and stretching the finish rolling deformed steel bars, and removing the dual-purpose device which is used as a capping beam template and a prestress support. The device is used as a template for pouring the pier stud and a supporting device for pouring the upper capping beam, simplifies the construction procedure, effectively shortens the construction period, does not need foundation treatment, and saves materials and construction space.
Description
Technical Field
The invention relates to the technical field of cantilever type support of high and large bent cap, in particular to a construction method for prestressed support of a viaduct Liang Gailiang with limited construction sites and a relatively tight construction period.
Background
In recent years, with the vigorous development of rail transit construction, large cities are emerging with a large number of urban viaducts. In the bridge construction at present, the main method of cast-in-situ beam construction is a full framing method, but the application range is limited to a certain extent due to the characteristics of a bracket method, and the method is not suitable for the conditions of higher pier body, large foundation treatment workload and the like, so that the method has important practical significance for the innovative design of a supporting device.
Disclosure of Invention
The invention aims to provide a dual-purpose device which is used as a pier column template and a prestress support and a construction method thereof. The prestress supporting dual-purpose device is used as a template for pouring pier columns and a supporting device for pouring an upper capping beam, simplifies construction procedures, effectively shortens construction period and saves materials and construction space.
The technical scheme adopted by the invention is a dual-purpose device which is used as a pier column template and a prestress support, and is characterized in that: the steel forming device comprises a steel forming plate (1), brackets (2), a reinforcing plate (3), vertical ribs (4), transverse ribs (5), an upper end pull rod (6), bolts (7), an upper end cross rod (8), finish rolling deformed steel bars (9) and groove steel plates (10). The steel template (1) is used as a template for pouring pier columns and is also used as a prestressed transmission device.
The brackets (2) are arranged in parallel in three rows longitudinally, and the brackets (2) are welded on the vertical ribs (4) on the outer side of the steel template (1). The transverse ribs (5) are embedded into the vertical ribs (4) to provide a stress surface for the split bolt. The top of the steel template (1) is provided with two cross bars (8) perpendicular to the support surface, and the front end and the rear end of each cross bar (8) are respectively provided with a pull rod (6). Twelve finish rolling deformed steel bars (9) are penetrated through the support surface, eight finish rolling deformed steel bars (9) are penetrated through the side surface, opposite pulling is carried out, and the friction force is increased by adopting a mode of applying prestress. The plate surface of each finish rolling deformed steel bar (9) is welded with a groove steel plate (10) of 200mm by 20 mm; the outside of the finish rolled deformed steel bar (9) is fixed by a bolt (7). The stress concentration part of the bracket (2) is welded and reinforced by a reinforcing plate (3).
The bracket (2) and the steel template vertical rib (4) are made of 20# I-steel.
The transverse ribs (5) and the transverse rods (8) are all channel steel.
The device is used as a template for pouring the pier column and a supporting device for pouring the upper capping beam, simplifies construction procedures, effectively shortens construction period and saves materials and construction space.
During construction, the pier column lower part template is assembled firstly, the device is installed on the upper part of the template, the pier column lower part template and the device steel template are used as pier column pouring templates, pier column concrete is poured after the installation is completed, after the pier column reaches the demolding strength, only the lower template below the anchor ear is dismantled, then the assembly and erection of the Bailey beam are carried out, the distribution beam and the upper part full framing are erected, the bottom die installation side die is paved, and then the PBS1080 type finish rolling screw thread steel is prestressed and stretched. And then constructing a capping beam body, after curing is completed, sequentially removing the disc buckle support and the Bailey sheet, and finally placing and stretching the finish rolling deformed steel bars, and removing the dual-purpose device which is used as a capping beam template and a prestress support.
Drawings
Fig. 1 is a construction process flow diagram.
Fig. 2 is a schematic structural view of the present device.
Detailed Description
The present invention will be described in detail with reference to the following examples.
As shown in fig. 1, a construction method of a dual-purpose device which is used as a pier column template and a prestress support, the method comprises the following steps:
S1, preparation for construction
The construction preparation comprises the work of site arrangement, installation and debugging of measuring paying-off mechanical equipment, personnel on site, material purchase, material storage and the like. And paying out the center line, the cross center line, the left and right bridge center lines and the side lines according to the construction drawing and the related wire points, wherein the purpose of the put center line and side lines is to be favorable for determining the plane position of the support system.
S2, installing a dual-purpose device which is used as a pier column template and a prestress support, and then hanging the device to a designated position by using a crane. The steel template (1) of the device is connected with the template of the lower pier column and is used as a pier column pouring template together.
S3, pouring pier column concrete
After the steel form (1) is assembled, pouring pier column concrete, and only removing the steel form (1) below the device after the concrete reaches the form removing strength.
S4, beret beam assembly
And (3) lifting the to-be-installed bailey beam by using a crane, placing the bailey beam behind the assembled bailey beam, aligning the bailey beam with the assembled bailey beam, and inserting a pin bolt after aligning a lower chord pin hole. The bailey assembly is carried out according to groups, a group of bailey (two transverse rows) is assembled each time, and bailey pieces are connected by flower frames. The total length of the Bailey beam for the middle beam is 27m.
S5, setting up a bailey beam
The lifting trolley is used for manually matching to lift, the whole bailey pieces are sequentially lifted from the south to the north or from the front to the back and the outside, and the whole span bailey beam is installed by the same method.
(1) And installing safety pins on the beams inserted with the bolts before the bailey beams are installed, tying safety belts on the bailey beams which need to be butted on the top surfaces of the steel supports by workers after the butt joint is completed, and installing the safety pins.
(2) After the bailey beam is installed, the bailey beams are connected by triangular iron at intervals of 9m transversely, the connection mode is single-sided welding, and the welding seams are kept full.
(3) The Bailey beam is dislocated on the top surface of the steel support and cannot be connected, double U-shaped ribs are needed to be connected, the U-shaped ribs are directly welded on one side, and welding seams are full.
S6, erecting a distribution beam and a full framing
And erecting distribution beams and brackets according to the center line and the side line of the bridge. The whole full framing adopts a disc buckle type bracket with the specification of phi 48mm multiplied by 3.2m, and a full-hall matrix type supporting method. The whole adopts 60X 60 module, the vertical rod transverse bridge row distance is 0.6m, and the parallel bridge row distance is 0.6m; the vertical step distance of the cross rod is 0.45m, and the bottom support and the top support are controlled within 30 cm.
S7, mounting the bottom die and the side die plates
According to the construction characteristics and difficulties of the engineering cast-in-situ beam, a large-area steel die is adopted for pier columns, a 6mm steel plate is adopted for a panel, a 12 x 150mm steel belt is adopted for a transverse frame, a 12 x 100mm steel belt is adopted for a vertical frame, a 10# channel steel is adopted as a main rib, a 218 # channel steel is adopted as a template back edge, a 20mm round steel/16 mm thick steel plate is adopted as a lifting hook, and an integral processing mode is adopted; the middle cross beam and the upper cover beam template adopt a shaping steel template.
S8, tensioning of finish rolling deformed steel bar
Twelve finish-rolled deformed steel bars with the diameter of 40mm are arranged on the surface of the support, eight finish-rolled deformed steel bars are arranged on the adjacent surfaces, and two pull rods are arranged at the upper end of the device. And tensioning by adopting special tensioning equipment, wherein the tensioning force of each finish rolling deformed steel bar is not less than 450KN. The stretching sequence is stretched symmetrically from the middle to the side and is stretched in two stages.
I.e., 0- > 50% →100%. And finally Zhang Lashang ends of the pull rods. And after all the pre-pressing load is unloaded, the finish rolling deformed steel bars can be put into tension.
S9, construction of a bent cap beam body
And carrying out construction operations such as steel bar binding, concrete pouring, concrete curing, prestressed reinforcement tensioning, grouting, sealing and anchoring of the corresponding beam body according to the middle beam construction scheme.
S10, disassembling the disc buckle support
And when the bottom die and the side die are dismounted after tensioning, gradually dismounting the full framing by symmetrically unloading jacking in the transverse bridge direction and the longitudinal bridge direction. The construction requirements are as follows:
(1) When the shelf is dismantled, the operation area should be divided, rope binding fence or vertical warning sign should be arranged around, and special people command should be arranged on the ground to prohibit non-operation personnel from entering.
(2) The operator at the high position of the frame is required to wear the safety helmet and tie the safety belt.
(3) The dismantling sequence should follow from top to bottom, the rule of first taking up and then dismantling, then taking up and then dismantling, firstly dismantling side die scissor supports and diagonal supports, then small cross bars, large cross bars, vertical bars and the like, and carrying out the dismantling work in sequence according to the one-step clear rule, and strictly forbidding the upper and lower parts and simultaneously.
(4) When the large mold rod, the diagonal brace and the scissor brace are dismounted, the middle buckle is dismounted, then the middle buckle is supported, and then the end buckle is dismounted.
(5) The cross bars should be removed with the layers, and temporary support columns applied before removal, and then removed.
(6) When the button is detached, the other party is informed to prevent falling.
(7) The disassembled materials are suspended by using ropes to bolt the rod pieces, the throwing is forbidden, and the materials should be piled up according to the appointed place. The fasteners are carried along with disassembly and carrying, are classified and stacked, are disassembled on the same day, are cleaned on the same day, and are required to be intensively recycled.
(8) In the process of disassembling the frame, people do not need to be replaced in the middle, and if people need to be replaced, the disassembling condition should be clear.
S11, removing the bailey piece and the cover device
(1) And (3) conveying the dismantled disc buckle frame and the template away, and ensuring that the crane and the dismantled bailey beam have construction and placement positions. And (3) the fixed connection of the transverse Bailey beams is removed in advance and hung to the ground.
(2) And after the fixed connection and the disassembly are completed, the integrated bailey bracket set is hoisted and disassembled from the outer side of the bent cap by adopting a crane. Dismantling sequence: the outer side is removed firstly, and the inner side is removed gradually.
(3) When the crane is disassembled, a special person directs the crane to integrally hoist the integrated bailey frame group to be hoisted to the ground, and workers are timely arranged to disassemble the hoisted bailey beams, so that stacking is orderly carried out and renting is carried out; in the hoisting process, constructors need to use a cable rope to pull two ends of the bailey beam, so that the swing amplitude of the bailey beam is prevented from being too large in hoisting. The project department sends a full-time safety officer to monitor during hoisting,
(4) After the beret frame is dismantled, the device is not allowed to be dismantled. When the crane is dismantled, a special person is arranged to command the crane. The crane firstly hoists the device, then loosens finish rolling screw thread steel connection, makes the staple bolt slowly leave the pier shaft, avoids causing the injury to the pier shaft. After falling to the ground safety position, stacking is concentrated, and a cable rope is adopted for traction during hoisting.
Examples
The invention relies on the first-term engineering of the new airport in Beijing city, the new airport track line is a track line connecting the city center and the new airport in Beijing, the designed speed per hour reaches 160 km per hour, and the new airport track line becomes the fastest city track engineering in China and is also the first-example track co-construction structure in Beijing city. The whole form of overhead co-constructed structure is "open" style of calligraphy, compare this standard section bent cap position height, the dead weight is great with other viaduct beams in Beijing city, middle crossbeam and upper bent cap construction whole appearance is rectangular shape solid concrete structure, the highest pier height 28.5m, the biggest bent cap length 40.05 meters (widening section length 58.5 meters) wide 3 meters, height 2.8 meters, the pier construction risk is high, the degree of difficulty is big, the time limit for a project is tight, to this kind of operating mode, adopt a dual-purpose device that doubles as pier stud template and prestressing force support to carry out the construction, the device both as the template of pier stud pouring usefulness, support device when the upper bent cap is pour again, the construction process is simplified, the effectual construction period that has shortened, need not ground to handle, save material and construction space.
Claims (3)
1. The construction method of the dual-purpose device which is used as a pier column template and a prestress support comprises a steel template (1), brackets (2), a reinforcing plate (3), vertical ribs (4), transverse ribs (5), upper-end pull rods (6), bolts (7), upper-end cross rods (8), finish-rolled deformed steel bars (9) and groove steel plates (10); the steel template (1) is used as a template for pouring pier columns and is also used as a pre-stress transmission device;
The brackets (2) are arranged in parallel in three rows longitudinally, and the brackets (2) are welded on the vertical ribs (4) on the outer side of the steel template (1); the transverse ribs (5) are embedded into the vertical ribs (4) to provide a stress surface for the split bolt; two cross bars (8) perpendicular to the support surface are arranged at the top of the steel template (1), and a pull rod (6) is respectively arranged at the front end and the rear end of each cross bar (8); twelve finish-rolled deformed steel bars (9) are penetrated through the support surface, eight finish-rolled deformed steel bars (9) are penetrated through the side surface of the support, opposite pulling is carried out, and the friction force of the support is increased by adopting a prestress application mode; the plate surface of each finish rolling deformed steel bar (9) is welded with a groove steel plate (10) of 200mm by 20 mm; the outside of the finish rolling deformed steel bar (9) is fixed by a bolt (7); the stress concentration part of the bracket (2) is welded and reinforced by a reinforcing plate (3);
The method is characterized in that: the method comprises the steps of,
S1, preparation for construction
The construction preparation comprises site arrangement, installation and debugging of measuring paying-off mechanical equipment, personnel on site, material purchase and storage work; according to the construction drawing and related wire points, paying out the center line, the cross center line, the left and right bridge center lines and the side lines of the bridge, wherein the purpose of the put center line and side lines is to facilitate the determination of the plane position of the support system;
S2, installing a pier column template and a prestress supporting dual-purpose device, and then hanging the device to a designated position by using a crane; the steel template (1) of the device is connected with the template of the lower pier column and is used as a pier column pouring template together;
s3, pouring pier column concrete
After the steel forms (1) are assembled, pouring pier column concrete, and only removing the steel forms (1) below the device after the concrete reaches the form removing strength;
S4, beret beam assembly
Lifting the to-be-installed bailey beam by using a crane, placing the bailey beam behind the assembled bailey beam, aligning the bailey beam with the assembled bailey beam, and inserting a pin bolt after aligning a lower chord pin hole; the Bailey assembling is carried out according to groups, a group of transverse two rows of Bailey beams are assembled each time, and the Bailey beams are connected by flower frames; the full length of the Bailey beam for the middle cross beam is 27m;
S5, setting up a bailey beam
Hoisting is carried out by using manual cooperation of a crane, the whole bailey beam is hoisted sequentially from the south to the north or from the front to the back and the outside, and the whole span bailey beam is installed by the same method;
(1) Installing safety pins on the beams inserted with the bolts before the bailey beams are installed, tying safety belts on the bailey beams which need to be butted on the top surfaces of the steel supports by workers after the butt joint is completed, and installing the safety pins;
(2) After the bailey beam is installed, connecting the bailey beams by using triangular iron every 9m transversely, wherein the connecting mode is single-sided welding, and keeping the welding seams full;
(3) The Bailey beam is dislocated on the top surface of the steel support and cannot be connected, double U-shaped ribs are needed to be connected, the U-shaped ribs are directly welded on one side, and welding seams are full;
s6, erecting a distribution beam and a full framing
Setting up distribution beams and brackets according to the center line and the side line of the bridge; the whole full framing adopts a disc buckle type bracket with the specification of phi 48mm multiplied by 3.2m, and a full-hall matrix type supporting method; the whole adopts 60X 60 module, the vertical rod transverse bridge row distance is 0.6m, and the parallel bridge row distance is 0.6m; the vertical step distance of the cross rod is 0.45m, and the bottom support and the top support are controlled within 30 cm;
s7, mounting the bottom die and the side die plates
According to the construction characteristics and difficulties of the engineering cast-in-situ beam, a large-area steel die is adopted for pier columns, a 6mm steel plate is adopted for a panel, a 12 x 150mm steel belt is adopted for a transverse frame, a 12 x 100mm steel belt is adopted for a vertical frame, a 10# channel steel is adopted as a main rib, a 218 # channel steel is adopted as a template back edge, a 20mm round steel/16 mm thick steel plate is adopted as a lifting hook, and an integral processing mode is adopted; the middle cross beam and the upper bent cap template adopt a shaping steel template;
S8, tensioning of finish rolling deformed steel bar
Twelve finish-rolled deformed steel bars with the diameter of 40mm are arranged on the surface of the support, eight finish-rolled deformed steel bars are arranged on the adjacent surface, two pull rods are arranged at the upper end of the device, and twenty finish-rolled deformed steel bars are arranged in the device; tensioning by adopting special tensioning equipment, wherein the tensioning force of each finish rolling deformed steel bar is not less than 450KN; the stretching sequence is stretched symmetrically from the middle to the side and is stretched in two stages;
namely 0 to 50 to 100 percent; finally Zhang Lashang ends of the pull rods; after all the pre-pressing load is unloaded, the finish rolling deformed steel bars can be put into tension;
S9, construction of a bent cap beam body
Carrying out related construction operations of binding steel bars, pouring concrete, curing concrete, tensioning prestressed tendons, grouting and sealing anchors of the corresponding beam body according to the middle beam construction scheme;
s10, disassembling the disc buckle support
When the bottom die and the side die are dismounted after tensioning, gradually dismounting the full framing by symmetrically unloading jacking in the transverse bridge direction and the longitudinal bridge direction;
s11, removing the bailey beam and the cover device
(1) The dismantled disc buckle frame and the template are transported away, so that the crane and the dismantled bailey beam are guaranteed to have construction and placement positions; the fixed connection of the transverse Bailey beams is removed in advance and hung to the ground;
(2) After the fixed connection and the disassembly are completed, the integrated bailey bracket set is hoisted and disassembled from the outer side of the bent cap by adopting a crane; dismantling sequence: firstly, dismantling the outer side and gradually dismantling the inner side;
(3) When the crane is disassembled, a special person directs the crane to integrally hoist the integrated bailey frame group to be hoisted to the ground, and workers are timely arranged to disassemble the hoisted bailey beams, so that stacking is orderly carried out and renting is carried out; in the hoisting process, constructors need to use a cable rope to pull two ends of the bailey beam, so that the swing amplitude of the bailey beam is prevented from being too large in hoisting; the project department sends a full-time safety officer to monitor during hoisting,
(4) After the bailey frame is removed, removing the cover device; when the crane is dismantled, a special person is arranged to command the crane; the crane firstly hoists the device, then loosens the finish rolling screw thread steel connection, so that the anchor ear slowly leaves the pier body, and the damage to the pier body is avoided; after falling to the ground safety position, stacking is concentrated, and a cable rope is adopted for traction during hoisting.
2. The construction method of the dual-purpose device used as the pier column template and the prestress support according to claim 1, which is characterized in that: the bracket (2) and the steel template vertical rib (4) are made of 20# I-steel.
3. The construction method of the dual-purpose device used as the pier column template and the prestress support according to claim 1, which is characterized in that: the transverse ribs (5) and the transverse rods (8) are all channel steel.
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| CN112195800B (en) * | 2020-09-23 | 2022-05-20 | 四川川交路桥有限责任公司 | No. 0 block longitudinal support-free construction method for suspension casting bridge |
| CN113186830A (en) * | 2021-05-11 | 2021-07-30 | 安徽省公路桥梁工程有限公司 | Construction process of cast-in-place bent cap |
| CN114790715B (en) * | 2022-05-27 | 2024-05-14 | 中交二航局第一工程有限公司 | Self-adaptive folding steel template device |
| CN115323894B (en) * | 2022-08-09 | 2024-05-14 | 中国建筑第二工程局有限公司 | Overhead turning test platform supporting and connecting structure and construction method thereof |
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| CN210797285U (en) * | 2019-08-08 | 2020-06-19 | 北京市政路桥股份有限公司 | Dual-purpose device used as pier column template and prestress support |
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| JP3429459B2 (en) * | 1999-06-30 | 2003-07-22 | 近藤鋼材株式会社 | Construction method of bridge deck haunch |
| CN101994293B (en) * | 2010-11-11 | 2012-08-22 | 中铁六局集团有限公司 | High pier coping construction method |
| CN102535338A (en) * | 2010-12-23 | 2012-07-04 | 上海市基础工程有限公司 | Hanging side formwork of cradle |
| CN105113389B (en) * | 2015-09-18 | 2017-01-25 | 河海大学 | Prefabricated steel-concrete composite structure pier column member |
| CN205369057U (en) * | 2016-02-14 | 2016-07-06 | 中交一公局第六工程有限公司 | A from lock bracket that is used for two high mounds of wall formula |
| CN205636474U (en) * | 2016-04-29 | 2016-10-12 | 贵州桥梁建设集团有限责任公司 | Assembled bracket structure |
| CN106088596B (en) * | 2016-08-08 | 2019-08-30 | 中铁二十二局集团第三工程有限公司 | Reinforcement system of U-groove side formwork for H-shaped steel truss without tie rods |
| CN207582424U (en) * | 2017-11-29 | 2018-07-06 | 中国水利水电第十工程局有限公司 | Aqueduct body cast-in-situ template frame support means |
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