CN114369996A - Method for mounting steel pipe column of pier in bridge water - Google Patents
Method for mounting steel pipe column of pier in bridge water Download PDFInfo
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- CN114369996A CN114369996A CN202210177587.8A CN202210177587A CN114369996A CN 114369996 A CN114369996 A CN 114369996A CN 202210177587 A CN202210177587 A CN 202210177587A CN 114369996 A CN114369996 A CN 114369996A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 214
- 239000010959 steel Substances 0.000 title claims abstract description 214
- 238000000034 method Methods 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 239000004567 concrete Substances 0.000 claims abstract description 41
- 230000002787 reinforcement Effects 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 23
- 238000009434 installation Methods 0.000 abstract description 16
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
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Abstract
The invention discloses an installation method of a steel pipe column of a buttress in bridge water, wherein the steel pipe column of the buttress is divided into a first steel pipe and a second steel pipe, the first steel pipe and the second steel pipe are connected through a connecting piece, and the installation method comprises the following steps: s1, welding the buttress steel pipe column and a reinforcement cage of the buttress pile foundation into a whole; s2, mounting an external frame of the buttress limiting device on the pile foundation steel casing; s3, integrally hoisting the buttress steel pipe column and the buttress pile foundation reinforcement cage into the pile foundation steel casing, and adjusting the height of the buttress steel pipe column and the reinforcement cage; s4, adjusting the verticality of the buttress steel pipe column, and installing a limiting piece of the buttress limiting device after adjustment is completed; and S5, constructing the buttress pile foundation concrete, and dismantling the buttress limiting device. The method for installing the buttress steel pipe column reduces construction procedures, reduces construction difficulty, improves working efficiency, and has the advantages of simple adjustment of the perpendicularity of the buttress steel pipe column, short fine adjustment time and high precision.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a method for installing a steel pipe column of an underwater buttress of a bridge.
Background
With the development of Chinese economy, the traffic volume is increasing day by day, and the traffic network is becoming perfect. In order to facilitate the travel of the masses of people, the river-crossing bridge is used as an important branch in road and bridge engineering products, the demand of the river-crossing bridge is increased day by day, the support method is a conventional method for bridge construction, the temporary buttress is used as a temporary support system of the bridge superstructure in the construction process, and the weight and the construction load of the whole superstructure are borne, so that the control of the installation quality of the temporary buttress is particularly important. The existing installation mode mainly comprises the steps of constructing a reinforced concrete pile foundation by adopting a cofferdam method (constructing a cofferdam, pumping water, leveling a field and the like), constructing a small bearing platform at the pile top position and embedding a positioning steel plate in advance, installing a steel pipe upright post of a temporary buttress on the small bearing platform, and connecting the steel pipe upright post and the embedded positioning steel plate in a welding mode. The construction method has the advantages of multiple construction procedures, low construction speed and long time consumption, and is difficult to meet the project which can only be constructed in a limited dry season.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, temporary buttresses are multiple in construction procedures, low in construction speed and difficult to control in installation precision, and can only be constructed in a limited dry season, and provides an installation method of a bridge underwater buttress steel pipe column, which aims to improve the construction speed and ensure the construction quality.
In order to achieve the above purpose, the invention provides the following technical scheme:
the mounting method of the steel pipe column of the buttress in the water of the bridge comprises the following steps:
s1, welding the second steel pipe of the buttress steel pipe column and a reinforcement cage of a buttress pile foundation into a whole, wherein the reinforcement cage is positioned on the periphery of the buttress steel pipe column;
s2, installing an external frame of a buttress limiting device on the pile foundation steel casing, wherein the external frame is connected with the pile foundation steel casing through bolts, and the pile foundation steel casing is positioned in the island;
s3, integrally hoisting the buttress steel pipe column and the reinforcement cage of the buttress pile foundation into the pile foundation steel casing, and adjusting the height of the buttress steel pipe column and the integral reinforcement cage of the buttress pile foundation according to the design elevation of the pile foundation;
s4, adjusting the perpendicularity of the buttress steel pipe column, and after adjustment is completed, installing a limiting piece of the buttress limiting device between the outer wall of the buttress steel pipe column and the external frame, wherein the limiting piece is used for fixing the perpendicularity of the buttress steel pipe column and is connected with the external frame;
and S5, constructing the buttress pile foundation concrete, and removing the buttress limiting device after the concrete is initially set.
The temporary buttress steel pipe column installation method provided by the invention aims at the problems that the installation progress of the buttress steel pipe column in water is slow and the installation quality is difficult to control in the prior art, the island construction method is adopted to replace cofferdams, the underwater construction is changed into land construction, the procedures and time for pumping water and leveling the field in cofferdam construction are omitted, the range of occupying a river is reduced, and the influence on river water flow is reduced.
Further, the details of step S1 are as follows: welding the main reinforcement of the reinforcement cage and the outer wall of the second steel pipe by using U-shaped steel bars, wherein the second steel pipe is in the center of the reinforcement cage and is concentric with the reinforcement cage in the welding process; after the welding is finished, the connecting piece is positioned above the bottom elevation of the riverbed.
Still further, the connecting member is a flange. In the invention, the connecting piece is positioned above the elevation of the bottom of the riverbed, and the second steel pipe can be directly disassembled when the buttress is disassembled after the bridge is formed, so that the part below the connecting piece is left in the water.
Further, in step S2, the construction process of the pile foundation steel casing includes: and carrying out island building and filling treatment in an underwater area to be constructed, drilling a drill hole in the island, enabling the pile foundation steel casing to follow, and continuously drilling to the pile bottom of the pile foundation design after the steel casing is installed.
Further, in step S2, a plurality of bolt holes are formed in the pile foundation steel casing and used for being connected with the external frame, and the bolt holes are strip-shaped holes.
Further, the details of step S2 include:
s21, hoisting the outer frame of the buttress limiting device to the pile foundation steel casing;
s22, connecting the supporting legs of the outer frame with the pile foundation steel casing by bolts, and screwing the bolts to prevent the outer frame from freely moving;
s23, checking the plane position and the verticality of the external frame by using a total station;
and S24, adjusting the external frame of the limiting device according to the measurement result of the step S23, and screwing all bolts after the plane position and the verticality meet the requirements.
Furthermore, at least four bolt holes which are uniformly distributed are formed in the pile foundation steel casing.
Further, in step S4, the position limiting members are a plurality of angle steels including a first angle steel and a second angle steel, and the detailed content of step S4 includes:
s41, mounting the second angle steel, wherein the second angle steel is connected with the external frame through a bolt and used for fixing the lower part of the first steel pipe;
s42, mounting the first angle steel, wherein the first angle steel is connected with the external frame through bolts and used for fixing the upper part of the first steel pipe, and adjusting the perpendicularity of the buttress steel pipe column again according to measurement positioning in the first angle steel mounting process;
and S43, tightening the bolts of the first angle steel and the second angle steel.
Furthermore, the number of the first angle steels is four, and the number of the second angle steels is four.
Furthermore, a plurality of round holes are formed in the first steel pipe, and when the buttress pile foundation concrete is constructed, the round holes are arranged so that the concrete flows into the first steel pipe during pouring and the concrete inside and outside the first steel pipe can be kept consistent. The round hole is provided with a hole on the first steel pipe before the second steel pipe and the reinforcement cage are welded into a whole.
Further, the details of step S5 include:
s51, pouring the buttress pile foundation concrete, calculating the concrete lifting height according to the poured concrete amount in the pouring process, detecting the actual concrete lifting height by using a measuring rope, measuring the height of the concrete surface by using the measuring rope after the concrete is poured, comparing the concrete surface with the height of the connecting piece, and preventing the concrete surface from covering the connecting piece;
and S52, removing the buttress limiting device after the concrete is initially set.
Furthermore, the number of the round holes is eight, the eight round holes are divided into two layers along the height direction of the first steel pipe, and four round holes are uniformly distributed in each layer.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the buttress steel pipe column installation method, the reinforcement cage of the buttress pile foundation and the second steel pipe of the buttress steel pipe column are connected into a whole, the whole lowering mode is adopted, the time for constructing a small bearing platform after pile foundation construction is completed and then installing a bottom section steel pipe is saved, the construction process is reduced, the construction difficulty is reduced, and therefore the working efficiency is improved.
2. According to the buttress steel pipe column installation method, the plane position and the verticality of the buttress limiting device are controlled, the plane position and the verticality of the buttress steel pipe column are adjusted by using the buttress limiting device, the adjustment of the verticality of the buttress limiting device is simpler than that of the buttress steel pipe column, the fine adjustment time is short, the precision is high, the buttress limiting device can keep the stability of the buttress steel pipe column in the concrete pouring process, the installation precision of the buttress steel pipe column is improved, and the positioning and adjusting time of the buttress steel pipe column is saved; meanwhile, the invention provides the pier limiting device capable of being recycled, which is simple and convenient to manufacture, easy to operate and low in cost, and can be also suitable for field installation and control of other steel structure columns.
3. The method for installing the buttress steel pipe column adopts a flange plate bolting mode, and only a small part of steel pipes embedded in concrete are consumed when the temporary buttress steel pipe column is dismantled after a bridge is formed.
Description of the drawings:
FIG. 1 is a schematic flow chart of a buttress steel pipe column installation method of the present invention;
FIG. 2 is a schematic view of the steel pipe column of the welded buttress in accordance with the embodiment 1 integrated with a steel reinforcement cage;
FIG. 3 is a schematic view of a U-shaped reinforcing bar according to example 1;
FIG. 4 is a plan view showing the installation of a steel pipe column of the buttress in example 1;
FIG. 5 is a schematic sectional view showing the installation of a steel pipe column of a buttress in example 1;
fig. 6 is a side view of a pile base steel casing in example 1;
the labels in the figure are: 1-buttress steel pipe column, 11-first steel pipe, 12-second steel pipe, 13-connecting piece, 2-reinforcement cage, 3-pile foundation steel casing, 4-buttress limiting device, 41-external frame, 42-limiting piece, 5-U-shaped steel bar, 6-bolt hole and 7-round hole.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-6, a method for installing a buttress steel pipe column 1 in a bridge water, the buttress steel pipe column 1 is divided into a first steel pipe 11 and a second steel pipe 12, the first steel pipe 11 is located on the second steel pipe 12, the first steel pipe 11 and the second steel pipe 12 are connected through a connecting piece 13, the first steel pipe 11 and the connecting piece 13 are detachably connected, the method comprises the following steps:
s1, welding the second steel pipe 12 of the buttress steel pipe column 1 and the reinforcement cage 2 of the buttress pile foundation into a whole, wherein the reinforcement cage 2 is positioned on the periphery of the buttress steel pipe column 1;
s2, installing the external frame 41 of the buttress limiting device 4 on the pile foundation steel casing, connecting the external frame 41 and the pile foundation steel casing 3 through bolts, and positioning the pile foundation steel casing 3 in the island;
s3, integrally hoisting the buttress steel pipe column 1 and the buttress pile foundation reinforcement cage 2 into the pile foundation steel casing 3, and adjusting the integral height of the buttress steel pipe column 1 and the buttress pile foundation reinforcement cage 2 according to the design elevation of the pile foundation;
s4, adjusting the perpendicularity of the buttress steel pipe column 1, and after adjustment is completed, installing a limiting piece 42 of a buttress limiting device 4 between the outer wall of the buttress steel pipe column 1 and the external frame 41, wherein the limiting piece 42 is used for fixing the perpendicularity of the buttress steel pipe column 1, and the limiting piece 42 is connected with the external frame 41;
and S5, constructing the buttress pile foundation concrete, and removing the buttress limiting device 4 after the concrete is initially set.
In the invention, the first steel pipe 11 and the second steel pipe 12 in the buttress steel pipe column 1 are connected into a whole before being connected with the reinforcement cage 2, the top end of the first steel pipe 11 exceeds the limit frame by about 30cm, so that the construction operation is convenient, and the steel pipe column of the subsequent buttress is connected with the second steel pipe 12 through a flange plate.
In some embodiments, the connecting member 13 is a flange, the connecting member 13 is located above the river bed bottom elevation, and before welding, the length of the second steel pipe 12 embedded in concrete is determined to ensure that the second steel pipe is exposed at the river bed bottom to be the flange, so that later disassembly is convenient. The details of step S1 are: welding the main reinforcement of the reinforcement cage 2 with the outer wall of the second steel pipe 12 by using U-shaped steel bars, wherein the second steel pipe 12 is in the center of the reinforcement cage 2 and is concentric with the reinforcement cage 2 in the welding process; after the welding is completed, the connecting piece 13 is positioned above the bottom elevation of the river bed. And the buttress steel pipe and the reinforcement cage 2 of the buttress pile foundation are integrally hoisted to the side of the orifice of the pile foundation steel casing 3 by a crane for standby.
In step S2, the construction process of the pile foundation steel casing 3 is: the island filling treatment is carried out in the area to be constructed in water, then a drill is used for guiding holes in the island, the pile foundation steel casing 3 follows, the depth of the guiding holes is controlled at the bottom elevation of the steel casing 3, and after the steel casing is installed, the pile is drilled to the designed pile bottom of the pile foundation. Be provided with a plurality of bolt hole 6 on pile foundation steel protects a section of thick bamboo 3 for be connected with external frame 41, specifically, be provided with four at least bolt holes 6 of evenly arranging on pile foundation steel protects a section of thick bamboo 3, bolt hole 6 is the bar hole, as shown in fig. 6.
In some embodiments, the details of step S2 include:
s21, hoisting the outer frame 41 of the buttress limiting device 4 to the pile foundation steel casing 3;
s22, connecting the supporting legs of the outer frame 41 with the pile foundation steel casing 3 by bolts, and screwing the bolts to prevent the outer frame 41 from freely moving;
s23, checking the plane position and the verticality of the external frame 41 by using a total station;
and S24, adjusting the outer frame 41 of the limiting device according to the measurement result of the step S23, and screwing all bolts after the plane position and the verticality meet the requirements.
In some embodiments, in step S4, the position-limiting element 42 is a plurality of angle steels, each of the angle steels includes a first angle steel and a second angle steel, the first angle steel includes four angle steels, and the second angle steel includes four angle steels, and the detailed content of step S4 includes:
s41, mounting second angle steel, wherein the second angle steel is connected with the outer frame 41 through bolts and used for fixing the lower part of the first steel pipe 11;
s42, installing first angle steel, wherein the first angle steel is connected with the external frame 41 through bolts and used for fixing the upper part of the first steel pipe 11, and adjusting the perpendicularity of the buttress steel pipe column 1 again according to measurement and positioning in the first angle steel installation process;
and S43, tightening the bolts of the first angle steel and the second angle steel.
In some embodiments, the first steel pipe 11 is provided with a plurality of circular holes 7, and when the buttress pile foundation concrete is constructed, the circular holes 7 are arranged so that the concrete flows into the first steel pipe 11 during pouring and the concrete inside and outside the first steel pipe 11 is kept consistent; eight round holes 7 are provided, the diameter of each hole is 10cm, the eight round holes 7 are divided into two layers along the height direction of the first steel pipe 11, four round holes are uniformly arranged on each layer, and the distance between the layers is 1.5 m. The length of the first steel pipe 11 in the concrete is 2m in the present invention. The round hole 7 is formed in the first steel pipe 11 before the second steel pipe 12 and the reinforcement cage 2 are welded into a whole.
In some embodiments, the details of step S5 include:
s51, pouring buttress pile foundation concrete, calculating the concrete lifting height according to the poured concrete amount in the pouring process, detecting the actual concrete lifting height by using a measuring rope, measuring the height of the concrete surface by using the measuring rope after the concrete is poured, comparing the concrete surface with the height of the connecting piece 12, and preventing the concrete surface from covering the connecting piece;
and S52, removing the buttress limiting device 4 after the concrete is initially set.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The mounting method of the steel pipe column of the pier in the water of the bridge is characterized in that the steel pipe column (1) of the pier is divided into a first steel pipe (11) and a second steel pipe (12), the first steel pipe (11) is positioned on the second steel pipe, the first steel pipe (11) is connected with the second steel pipe (12) through a connecting piece (13), the first steel pipe (11) is detachably connected with the connecting piece (13), and the mounting method comprises the following steps:
s1, welding the second steel pipe (12) of the buttress steel pipe column (1) and a reinforcement cage (2) of a buttress pile foundation into a whole, wherein the reinforcement cage (2) is positioned on the periphery of the buttress steel pipe column (1);
s2, installing an external frame (41) of a buttress limiting device (4) on the pile foundation steel casing (3), wherein the external frame (41) is connected with the pile foundation steel casing (3) through bolts, and the pile foundation steel casing (3) is positioned in a damming island;
s3, integrally hoisting the buttress steel pipe column (1) and the reinforcement cage (2) of the buttress pile foundation into the pile foundation steel casing (3), and adjusting the integral height of the buttress steel pipe column (1) and the reinforcement cage (2) of the buttress pile foundation according to the design elevation of the pile foundation;
s4, adjusting the verticality of the buttress steel pipe column (1), and after adjustment, installing a limiting piece (42) of the buttress limiting device (4) between the outer wall of the buttress steel pipe column (1) and the external frame (41), wherein the limiting piece (42) is used for fixing the verticality of the buttress steel pipe column (1), and the limiting piece (42) is connected with the external frame (41);
and S5, constructing the buttress pile foundation concrete, and removing the buttress limiting device (4) after the concrete is initially set.
2. The method for installing the steel pipe column of the pier in the bridge water as claimed in claim 1, wherein the step S1 includes the following steps: welding and connecting the main reinforcement of the reinforcement cage (2) with the outer wall of the second steel pipe (12) by adopting U-shaped reinforcements (5), and enabling the second steel pipe (12) to be concentric with the reinforcement cage (2) in the welding process; and after welding, the connecting piece (13) is positioned above the bottom elevation of the riverbed.
3. The method for installing the steel pipe column of the pier in the bridge water as claimed in claim 1, wherein the connecting member (13) is a flange.
4. The method for installing the steel pipe column of the pier in the water of the bridge as claimed in claim 1, wherein in step S2, the pile base steel casing (3) is provided with a plurality of bolt holes (6) for connecting with the external frame (41), and the bolt holes (6) are strip-shaped holes.
5. The method for installing the steel pipe column of the pier in the bridge water as claimed in claim 4, wherein the details of the step S2 include:
s21, hoisting the outer frame (41) of the buttress limiting device (4) to the pile foundation steel casing (3);
s22, connecting the supporting legs of the outer frame (41) with the pile foundation steel casing (3) by bolts, and screwing the bolts to prevent the outer frame (41) from freely moving;
s23, checking the plane position and the verticality of the external frame (41) by using a total station;
and S24, adjusting the outer frame (41) according to the measurement result of the step S23, and screwing all bolts after the plane position and the verticality meet the requirements.
6. The method for installing the steel pipe column of the pier in the bridge water as claimed in claim 5, wherein the pile foundation steel casing (3) is provided with at least four bolt holes (6) which are uniformly distributed.
7. The method for installing the steel pipe column of the pier in the water of the bridge as claimed in claim 1, wherein in step S4, the position-limiting member (42) is a plurality of angle steels including a first angle steel and a second angle steel, and the details of step S4 include:
s41, mounting the second angle steel, wherein the second angle steel is connected with the external frame (41) through bolts and used for fixing the lower part of the first steel pipe (11);
s42, mounting the first angle steel, wherein the first angle steel is connected with the external frame (41) through bolts and used for fixing the upper part of the first steel pipe (11), and adjusting the perpendicularity of the buttress steel pipe column (1) again according to measurement and positioning in the first angle steel mounting process;
and S43, tightening the bolts of the first angle steel and the second angle steel.
8. The method for installing the steel pipe column of the pier in the water of the bridge as claimed in claim 7, wherein the number of the first angle steels is four, and the number of the second angle steels is four.
9. The method for installing the steel pipe column of the pier in the bridge water as claimed in claim 1, wherein the details of the step S5 include:
s51, pouring the buttress pile foundation concrete, measuring the height of a concrete surface by using a measuring rope every time when a disc of concrete is poured, and comparing the elevation of the concrete surface with that of the connecting piece (13) to prevent the concrete surface from covering the connecting piece (13);
and S52, removing the buttress limiting device (4) after the concrete is initially set.
10. The method for installing the steel pipe column of the pier in the bridge water according to any one of claims 1 to 9, wherein the first steel pipe (11) is provided with a plurality of round holes (7), eight round holes (7) are provided, the eight round holes (7) are divided into two layers along the height direction of the first steel pipe (11), and four round holes (7) in each layer are uniformly arranged.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2021114241554 | 2021-11-26 | ||
| CN202111424155 | 2021-11-26 |
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| CN114369996A true CN114369996A (en) | 2022-04-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114960460A (en) * | 2022-07-13 | 2022-08-30 | 中国二十二冶集团有限公司 | Method for quickly and accurately installing plate type rubber support |
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| CN114960460B (en) * | 2022-07-13 | 2023-12-15 | 中国二十二冶集团有限公司 | Method for quickly and accurately mounting plate-type rubber support |
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Application publication date: 20220419 |