CN111636433A - Adjustable die for manufacturing waist beam and using method thereof - Google Patents
Adjustable die for manufacturing waist beam and using method thereof Download PDFInfo
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- CN111636433A CN111636433A CN202010408664.7A CN202010408664A CN111636433A CN 111636433 A CN111636433 A CN 111636433A CN 202010408664 A CN202010408664 A CN 202010408664A CN 111636433 A CN111636433 A CN 111636433A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The invention discloses an adjustable die for manufacturing a waist rail and a using method thereof, wherein the adjustable die comprises a first fixed plate, a second fixed plate, a movable plate and an adjusting device; the movable plate comprises a first plate body and a second plate body; the adjusting device comprises a first fixed seat, a second fixed seat and a movable connecting mechanism; the movable connecting mechanism comprises a first connecting piece, a second connecting piece and a length adjusting mechanism; the first connecting piece is rotatably connected with the first fixed seat, and the second connecting piece is detachably connected with the second fixed seat; the length adjusting mechanism adjusts the length of the movable connecting mechanism by urging the first connecting piece and the second connecting piece to move oppositely or reversely. The adjustable die can be adjusted according to different specifications of the waist rail to be manufactured, so that the adjustable die is suitable for manufacturing the waist rails with different specifications, the construction efficiency can be improved, and the construction cost can be saved.
Description
Technical Field
The invention relates to a waist rail manufacturing device, in particular to an adjustable die for manufacturing a waist rail and a using method thereof.
Background
In the basement foundation pit engineering construction stage of a large building, support engineering is usually involved, a waist beam is one of indispensable structural treatment measures in support anchor cables, and according to the practical application of the engineering, the waist beam can adopt double-spliced section steel or double-spliced section steel
And (5) casting anchor column concrete in situ. Because the waist beam is generally positioned in an underground environment, particularly after the earthwork of the side wall of a permanently supported basement is backfilled, if the corrosion-resistant and rust-proof quality of the section steel waist beam is not controlled and the steel structure maintenance in the later period is not in place, the section steel waist beam is corroded, the prestress tension failure of an anchor cable is further caused, and the potential safety hazard of a building structure is caused; in addition, because the installation of shaped steel waist rail needs the cooperation of construction equipment such as crane, and some foundation ditch engineering, construction equipment can't drive in, leads to unable installation, or installation measure takes comparatively high, influences whole time limit for a project, causes engineering cost to increase. In view of this, more foundation pit engineering is tending to adopt concrete wales to meet structural performance requirements.
According to the process requirements of construction of anchor cables and waist beams for supporting foundation pits, the construction of the waist beams is started after earth is excavated to the height of the anchor cables or the waist beams by 1-1.5 m. The conventional method comprises the steps of firstly leveling and compacting the periphery of a foundation pit, erecting a support frame body and then erecting a template for constructing the waist rail; the template is generally cut and lapped according to the section size of the waist rail on site to form a mold, then concrete is poured in the mold, and after the concrete is completely solidified, the mold is removed, so that the manufacture of the waist rail is completed.
However, in the process of manufacturing the wale, the conventional mold is specially designed according to the specification (such as length, width, height, angle and the like) of the wale to be manufactured, particularly, the wale needs to be connected with the anchor rod, the anchor rod needs to vertically extend out of the riveting surface of the wale, and the height position and the inclination angle of the riveting surface of different wales are different due to different angles of the anchor rod in different wales, so that in the prior art, when the wales with different specifications need to be manufactured, the mold needs to be redesigned, which not only consumes time and labor, but also reduces the construction progress and improves the construction cost.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an adjustable die for manufacturing a waist rail, wherein the adjustable die can be adjusted according to different specifications of the waist rail to be manufactured, so that the adjustable die is suitable for manufacturing the waist rails with different specifications, the construction efficiency can be improved, and the construction cost can be saved.
Another object of the present invention is to provide a method of using an adjustable mold for wale fabrication.
The technical scheme for solving the technical problems is as follows:
an adjustable die for manufacturing a waist rail comprises a first fixed plate, a second fixed plate, a movable plate rotationally connected to the second fixed plate and an adjusting device for adjusting the angle of the movable plate relative to the ground, wherein the first fixed plate and the second fixed plate are arranged in parallel, and the second fixed plate is arranged at the upper end of the first fixed plate;
the movable plate comprises a first plate body and a second plate body, wherein the first plate body and the second plate body are arranged at an angle; one end of the first plate body is rotatably connected with the first fixing plate, and the other end of the first plate body is fixedly connected with the second plate body; the second plate body is provided with avoidance holes for avoiding the anchor columns on the row piles;
the adjusting device comprises a first fixed seat arranged on the movable plate, a second fixed seat arranged on the second fixed plate and a movable connecting mechanism used for connecting the first fixed seat and the second fixed seat, wherein the movable connecting mechanism comprises a first connecting piece, a second connecting piece and a length adjusting mechanism used for promoting the first connecting piece and the second connecting piece to move oppositely or reversely, the first connecting piece is rotatably connected with the first fixed seat, and the second connecting piece is detachably connected with the second fixed seat; the length adjusting mechanism adjusts the length of the movable connecting mechanism by urging the first connecting piece and the second connecting piece to move oppositely or reversely.
Preferably, the length adjusting mechanism is a screw rod transmission mechanism, wherein the screw rod transmission mechanism comprises a screw rod arranged on the first connecting piece and a screw rod nut arranged on the second connecting piece, the screw rod is connected with the end part, far away from the first fixing seat, of the first connecting piece, the screw rod nut is connected with the end part, far away from the second fixing seat, of the second connecting piece, and the screw rod is installed on the screw rod nut.
Preferably, the length adjustment mechanism is a threaded connection structure, wherein the threaded connection structure comprises an external thread and an internal thread hole, the external thread is arranged in the first connecting piece and is far away from the end part of the first fixing seat, the internal thread hole is arranged in the second connecting piece and is far away from the end part of the second fixing seat, the axis of the internal thread hole is staggered with the axis of the second connecting piece, and the external thread on the first connecting piece is matched with the internal thread hole on the second connecting piece.
Preferably, a hook-shaped locking portion is arranged at the end portion, far away from the screw nut, of the second connecting piece, and a connecting groove matched with the locking portion is formed in the second fixing seat.
Preferably, an included angle between the first plate body and the second plate body is 90 degrees.
Preferably, the adjusting devices are arranged in multiple groups and are uniformly arranged along the length direction of the second fixing plate.
Preferably, the avoidance hole is oblong.
Preferably, the device further comprises a blocking plate for blocking the avoidance hole, wherein a through hole matched with the anchor column is formed in the blocking plate, an adjusting groove is formed in the position, corresponding to the blocking plate, of the second plate body, and the adjusting groove extends along the length direction of the movable plate; the first fixing seat is provided with an avoiding groove for avoiding the plugging plate.
A method of using an adjustable mold for wale fabrication, comprising the steps of:
(1) mounting a second fixing plate, so that the second fixing plate is positioned above the waist beam to be built;
(2) according to the difference of the angles of the anchor posts on the row piles, the angle of the movable plate relative to the ground is adjusted through the adjusting device, so that the plate surface of the second plate body in the movable plate is perpendicular to the anchor posts on the row piles;
(3) sleeving the movable plate on the anchor columns of the row piles, enabling the anchor columns of the row piles to penetrate through the avoidance holes in the second plate body of the movable plate, and fixing the first fixing plate;
(4) connecting the second connecting piece with the second fixed seat to complete the construction work of the die;
(5) and pouring concrete into the mould, and removing the mould after the concrete is solidified to finish the manufacture of the waist rail.
Preferably, in the step (2), the length adjusting mechanism urges the first connecting member and the second connecting member to move in opposite directions or vice versa, so that the movable plate rotates around the first fixed plate, thereby adjusting the angle of the movable plate relative to the ground.
The working principle of the adjustable die for manufacturing the waist beam is as follows;
before the operation, because the campshed has vertically installed in the basement, and all be provided with an anchor post on every campshed, this anchor post slope sets up, and one end is installed subaerial, and the other end passes the campshed back slope and upwards extends.
During operation, the second fixing plate is installed on the row piles and is positioned at the upper end of the waist beam to be built, then the first connecting piece and the second connecting piece are driven to move in the opposite direction or in the reverse direction through the length adjusting mechanism according to different angles of the anchor posts on the row piles, the movable plate rotates by taking the first fixing plate as a rotation center, and therefore the anchor posts on the row piles penetrate through the avoiding holes in the second plate body of the movable plate and are fixed well, and the first fixing plate is positioned at the lower end of the waist beam to be built; and then, connecting the second connecting piece with a second fixed seat on a second fixed plate so as to complete the construction work of the die.
And finally, pouring concrete into the mold, and removing the mold after the concrete is solidified, thereby finishing the manufacture of the waist rail.
Compared with the prior art, the invention has the following beneficial effects:
1. the adjustable die for manufacturing the wale can enable the first connecting piece and the second connecting piece to move oppositely or reversely by adjusting the length adjusting mechanism according to different angles of the anchor posts on the row piles, so that the length of the movable connecting mechanism is adjusted, the movable plate rotates by taking the first fixed plate as a rotation center, the angle adjustment of the movable plate relative to the ground is realized, the plate surface of the second plate body in the movable plate is ensured to be vertical to the anchor posts on the row piles, and the adjustable die for manufacturing the wale on the row piles of the anchor posts with different inclination angles is adapted to the manufacturing of the wale.
2. The adjustable die for manufacturing the waist rail can be adjusted according to different specifications of the waist rail to be manufactured, so that the adjustable die is suitable for manufacturing the waist rails with different specifications, the construction efficiency can be improved, and the construction cost can be saved.
Drawings
Fig. 1 and 2 are perspective views illustrating an adjustable mold for manufacturing a wale according to the present invention, wherein fig. 2 is a perspective view illustrating a state where the ground and the piles are hidden.
Fig. 3 is a side view.
Fig. 4 is a schematic perspective view (partial) of the adjustment device.
Fig. 5 is a schematic structural view of the blocking plate.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Referring to fig. 1 to 5, the adjustable die for manufacturing a wale according to the present invention includes a first fixing plate 4, a second fixing plate 3, a movable plate 5 rotatably connected to the second fixing plate 3, and an adjusting device for adjusting an angle of the movable plate 5 with respect to the ground, wherein the first fixing plate 4 and the second fixing plate 3 are disposed in parallel, and the second fixing plate 3 is disposed at an upper end of the first fixing plate 4.
Referring to fig. 1 to 5, the movable plate 5 includes a first plate 5-1 and a second plate 5-2, wherein an included angle between the first plate 5-1 and the second plate 5-2 is 90 degrees; one end of the first plate body 5-1 is rotatably connected with the first fixing plate 4, and the other end of the first plate body is fixedly connected with the second plate body 5-2; the second plate body 5-2 is provided with an avoidance hole for avoiding the anchor column 2 on the row pile 1, and the avoidance hole is oblong (not shown in the attached drawings of the specification).
Referring to fig. 1 to 5, the adjusting device includes a first fixed seat 7 disposed on the movable plate 5, a second fixed seat 8 disposed on the second fixed plate 3, and a movable connection mechanism for connecting the first fixed seat 7 and the second fixed seat 8, wherein the movable connection mechanism includes a first connection member 9, a second connection member 10, and a length adjustment mechanism for urging the first connection member 9 and the second connection member 10 to move in opposite directions or in opposite directions, wherein the first connection member 9 is rotatably connected to the first fixed seat 7, and the second connection member 10 is detachably connected to the second fixed seat 8; the length adjusting mechanism adjusts the length of the movable connecting mechanism by causing the first connecting piece 9 and the second connecting piece 10 to move oppositely or reversely.
Referring to fig. 1 to 5, the length adjustment mechanism is a screw transmission mechanism, wherein the screw transmission mechanism includes a screw rod disposed on the first connecting member 9 and a screw nut 13 disposed on the second connecting member 10, the screw rod is connected to an end portion of the first connecting member 9 far away from the first fixing seat 7, the screw nut 13 is connected to an end portion of the second connecting member 10 far away from the second fixing seat 8, and the screw rod is mounted on the screw nut 13. The second connecting piece 10 is driven to move on the screw rod along the axis direction of the screw rod by rotating the screw rod nut 13, so that the length of the movable connecting mechanism is adjusted, and the angle of the movable plate 5 relative to the ground is adjusted.
Referring to fig. 1-5, a hook-shaped locking portion 10-1 is disposed at an end of the second connecting member 10 away from the feed screw nut 13, and a connecting groove engaged with the locking portion 10-1 is disposed on the second fixing base 8. After the length of the movable connecting mechanism is adjusted, namely the angle of the movable plate 5 relative to the ground is adjusted, the locking part 10-1 on the second connecting piece 10 is matched with the connecting groove, so that the construction work of the adjustable die is completed.
The adjusting devices in this embodiment are multiple groups, and are uniformly arranged along the length direction of the second fixing plate 3.
Referring to fig. 1 to 5, the adjustable mold of the present invention further includes a blocking plate 6 for blocking the avoidance hole, wherein the blocking plate 6 is provided with a through hole matched with the anchor post 2, the second plate body 5-2 is provided with an adjusting groove at a position corresponding to the blocking plate 6, and the adjusting groove extends along the length direction of the movable plate 5; the first fixed seat 7 is provided with an avoiding groove 12 for avoiding the plugging plate 6.
Through setting up above-mentioned structure, its aim at:
because the intervals among the piles 1 are different, the intervals of the anchor columns 2 obliquely inserted on the piles 1 are also different, the avoidance holes in the invention are made into the long round holes, so that the movable plate 5 can adapt to the intervals of the piles 1 with different intervals, and the movable plate 5 is provided with the plugging plates 6, so that when the movable plate 5 is installed on the anchor columns 2, the distance between the plugging plates 6 is firstly adjusted, so that the through holes on the plugging plates 6 correspond to the anchor columns 2 on the piles 1 one by one, and then the movable plate 5 is installed on the anchor columns 2, so that the waist beam with different intervals among the piles 1 can be manufactured suitably, and the plugging plates 6 can prevent the concrete in the adjustable mould from overflowing from the long round avoidance holes in the movable plate 5, thereby ensuring the quality of the waist beam.
Referring to fig. 1 to 5, the method for using the adjustable mold for wale fabrication according to the present invention includes the steps of:
(1) mounting a second fixing plate 3, so that the second fixing plate 3 is positioned above the waist rail to be built;
(2) according to the angle of the anchor posts 2 on the row piles 1, the angle of the movable plate 5 relative to the ground is adjusted through the adjusting device, so that the plate surface of a second plate body 5-2 in the movable plate 5 is perpendicular to the anchor posts 2 on the row piles 1;
(3) sleeving the movable plate 5 on the anchor posts 2 of the row piles 1, enabling the anchor posts 2 of the row piles 1 to penetrate through the avoidance holes in the second plate body 5-2 of the movable plate 5, and fixing the first fixing plate 4;
(4) connecting the second connecting piece 10 with the second fixed seat 8 to complete the construction work of the die;
(5) and pouring concrete into the mould, and removing the mould after the concrete is solidified to finish the manufacture of the waist rail.
Referring to fig. 1 to 5, in step (2), the length adjustment mechanism causes the first connecting member 9 and the second connecting member 10 to move in opposite directions, so that the movable plate 5 rotates around the first fixed plate 4, thereby achieving the angle adjustment of the movable plate 5 relative to the ground.
Referring to fig. 1 to 5, the adjustable mold for manufacturing the wale according to the present invention operates on the principle;
before working, row piles 1 are vertically arranged under the ground, each row pile 1 is provided with an anchor column 2, the anchor columns 2 are obliquely arranged, one end of each anchor column is arranged on the ground, and the other end of each anchor column penetrates through the row piles 1 to obliquely extend upwards.
During operation, install second fixed plate 3 on campshed 1 earlier, and be located the upper end of the waist rail of will building, then according to the difference of the anchor post 2 on the campshed 1, through adjusting length adjustment mechanism, impel first connecting piece 9 and second connecting piece 10 do opposite movement or reverse motion to adjust swing joint mechanism's length, make fly leaf 5 can use first fixed plate 4 to be rotary motion as the center of rotation, thereby make anchor post 2 on this campshed 1 pass the hole of dodging on the second plate body 5-2 of fly leaf 5. Then, fixing the first fixing plate 4, so that the first fixing plate 4 is positioned at the lower end of the waist rail to be built; subsequently, the second connecting member 10 is connected to the second fixing base 8 of the second fixing plate 3, thereby completing the construction of the mold. And finally, pouring concrete into the mold, and removing the mold after the concrete is solidified, thereby finishing the manufacture of the waist rail.
Besides the installation manner, the adjustable die for manufacturing the waist rail can also be used for sleeving the movable plate 5 on the anchor post 2, then rotatably connecting the movable plate 5 with the first fixed plate 3, and adjusting the length of the movable connecting mechanism through the length adjusting mechanism, so that the locking part 10-1 on the second connecting piece 10 is matched with the connecting groove on the second fixed seat 8, and the adjustable die for manufacturing the waist rail with different specifications is suitable for manufacturing the waist rails with different specifications.
Example 2
The difference between this embodiment and embodiment 1 is that the length adjustment mechanism is a threaded connection structure, where the threaded connection structure includes an external thread provided on an end portion of the first connection member 9 far from the first fixing seat 7, and an internal threaded hole provided on an end portion of the second connection member 10 far from the second fixing seat 8, where an axis of the internal threaded hole is staggered from an axis of the second connection member 10, and the external thread on the first connection member 9 is matched with the internal threaded hole on the second connection member 10.
The above description is a preferred embodiment of the present invention, but the present invention is not limited to the above description, and any other changes, modifications, substitutions, blocks and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (10)
1. An adjustable die for manufacturing a waist rail is characterized by comprising a first fixed plate, a second fixed plate, a movable plate rotatably connected to the second fixed plate and an adjusting device for adjusting the angle of the movable plate relative to the ground, wherein the first fixed plate and the second fixed plate are arranged in parallel, and the second fixed plate is arranged at the upper end of the first fixed plate;
the movable plate comprises a first plate body and a second plate body, wherein the first plate body and the second plate body are arranged at an angle; one end of the first plate body is rotatably connected with the first fixing plate, and the other end of the first plate body is fixedly connected with the second plate body; the second plate body is provided with avoidance holes for avoiding the anchor columns on the row piles;
the adjusting device comprises a first fixed seat arranged on the movable plate, a second fixed seat arranged on the second fixed plate and a movable connecting mechanism used for connecting the first fixed seat and the second fixed seat, wherein the movable connecting mechanism comprises a first connecting piece, a second connecting piece and a length adjusting mechanism used for promoting the first connecting piece and the second connecting piece to move oppositely or reversely, the first connecting piece is rotatably connected with the first fixed seat, and the second connecting piece is detachably connected with the second fixed seat; the length adjusting mechanism adjusts the length of the movable connecting mechanism by urging the first connecting piece and the second connecting piece to move oppositely or reversely.
2. The adjustable mold for manufacturing a wale according to claim 1, wherein the length adjusting mechanism is a screw driving mechanism, wherein the screw driving mechanism includes a screw rod provided on the first connecting member and a screw nut provided on the second connecting member, wherein the screw rod is connected to an end portion of the first connecting member away from the first fixing seat, the screw nut is connected to an end portion of the second connecting member away from the second fixing seat, and the screw rod is mounted on the screw nut.
3. The adjustable mold for lumbar beam manufacturing of claim 1, wherein the length adjustment mechanism is a threaded connection, wherein the threaded connection comprises an external thread provided on an end of the first connection piece remote from the first fixing seat and an internal threaded hole provided on an end of the second connection piece remote from the second fixing seat, wherein an axis of the internal threaded hole is staggered from an axis of the second connection piece, and the external thread on the first connection piece is matched with the internal threaded hole on the second connection piece.
4. The adjustable die for manufacturing the wale according to claim 2, wherein a hook-shaped locking portion is provided at an end portion of the second connecting member, which is far away from the lead screw nut, and the second fixing seat is provided with a connecting groove engaged with the locking portion.
5. The adjustable mold for wale manufacturing according to claim 1, wherein an included angle between the first plate body and the second plate body is 90 degrees.
6. The adjustable die for wale making according to any one of claims 1 to 5, wherein the adjusting means are provided in a plurality of sets and are uniformly disposed along a length direction of the second fixing plate.
7. The adjustable mold for wale manufacturing according to any one of claims 1 to 5, wherein the avoiding hole is oblong.
8. The adjustable mold for manufacturing the wale according to claim 7, further comprising a blocking plate for blocking the avoiding hole, wherein a through hole matched with an anchor column is formed in the blocking plate, an adjusting groove is formed in the second plate body at a position corresponding to the blocking plate, and the adjusting groove extends along the length direction of the movable plate; the first fixing seat is provided with an avoiding groove for avoiding the plugging plate.
9. The method of using the adjustable mold for wale making according to claim 1, comprising the steps of:
(1) mounting a second fixing plate, so that the second fixing plate is positioned above the waist beam to be built;
(2) according to the difference of the angles of the anchor posts on the row piles, the angle of the movable plate relative to the ground is adjusted through the adjusting device, so that the plate surface of the second plate body in the movable plate is perpendicular to the anchor posts on the row piles;
(3) sleeving the movable plate on the anchor columns of the row piles, enabling the anchor columns of the row piles to penetrate through the avoidance holes in the second plate body of the movable plate, and fixing the first fixing plate;
(4) connecting the second connecting piece with the second fixed seat to complete the construction work of the die;
(5) and pouring concrete into the mould, and removing the mould after the concrete is solidified to finish the manufacture of the waist rail.
10. The method of using the adjustable mold for lumbar beam manufacturing according to claim 9, wherein in the step (2), the length adjusting mechanism is used to urge the first connecting member and the second connecting member to move in opposite directions, so that the movable plate rotates around the first fixed plate, thereby achieving the angle adjustment of the movable plate relative to the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010408664.7A CN111636433A (en) | 2020-05-14 | 2020-05-14 | Adjustable die for manufacturing waist beam and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010408664.7A CN111636433A (en) | 2020-05-14 | 2020-05-14 | Adjustable die for manufacturing waist beam and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111636433A true CN111636433A (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010408664.7A Pending CN111636433A (en) | 2020-05-14 | 2020-05-14 | Adjustable die for manufacturing waist beam and using method thereof |
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| CN (1) | CN111636433A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459077A (en) * | 2020-10-28 | 2021-03-09 | 济南城建集团有限公司 | Continuous foundation pit waist beam and construction method thereof |
| CN114775633A (en) * | 2022-04-18 | 2022-07-22 | 中冶集团武汉勘察研究院有限公司 | Mold system for construction of anchor column concrete support crown beam of deep foundation pit and use method thereof |
| CN114934517A (en) * | 2022-05-18 | 2022-08-23 | 中建八局第一建设有限公司 | Foundation pit special-shaped continuous waist beam and construction method thereof |
-
2020
- 2020-05-14 CN CN202010408664.7A patent/CN111636433A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112459077A (en) * | 2020-10-28 | 2021-03-09 | 济南城建集团有限公司 | Continuous foundation pit waist beam and construction method thereof |
| CN114775633A (en) * | 2022-04-18 | 2022-07-22 | 中冶集团武汉勘察研究院有限公司 | Mold system for construction of anchor column concrete support crown beam of deep foundation pit and use method thereof |
| CN114934517A (en) * | 2022-05-18 | 2022-08-23 | 中建八局第一建设有限公司 | Foundation pit special-shaped continuous waist beam and construction method thereof |
| CN114934517B (en) * | 2022-05-18 | 2023-07-25 | 中建八局第一建设有限公司 | Special-shaped continuous waist beam for foundation pit and construction method thereof |
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