CN113373976A - Mobile operation platform and construction method thereof - Google Patents
Mobile operation platform and construction method thereof Download PDFInfo
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- CN113373976A CN113373976A CN202110656212.5A CN202110656212A CN113373976A CN 113373976 A CN113373976 A CN 113373976A CN 202110656212 A CN202110656212 A CN 202110656212A CN 113373976 A CN113373976 A CN 113373976A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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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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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/28—Mobile scaffolds; Scaffolds with mobile platforms
- E04G2003/286—Mobile scaffolds; Scaffolds with mobile platforms mobile vertically
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Abstract
本发明涉及一种移动使用作业平台及其施工方法，所述作业平台包括地下连续墙的内侧固定设有结构侧墙，结构侧墙的内侧设有环框梁，环框梁的内侧固装有钢筋砼支撑，结构侧墙上设有第一工字钢，结构侧墙与环框梁之间设有第二工字钢，环框梁的内侧设有第三工字钢；所述作业平台根据现场情况进行分布，每根工字钢的下端两侧均设有膨胀螺栓，第一工字钢的左侧、第三工字钢的右侧均焊接吊耳，第一工字钢、第二工字钢、第三工字钢上铺设钢筋网片和厚花纹钢板，第三工字钢上端的第三钢筋安装有防护栏和高挡脚板，第三工字钢上端的第三钢筋插入脚手架立杆；所述作业平台能够提高施工的工程进度、工作效率、节约成本。
The invention relates to a mobile working platform and a construction method thereof. The working platform includes a structural side wall fixedly arranged on the inner side of an underground continuous wall, a ring frame beam is arranged on the inner side of the structural side wall, and a ring frame beam is fixed on the inner side of the ring frame beam. Reinforced concrete support, a first I-beam is arranged on the side wall of the structure, a second I-beam is arranged between the side wall of the structure and the ring frame beam, and a third I-beam is arranged on the inner side of the ring frame beam; the working platform The distribution is carried out according to the site conditions. There are expansion bolts on both sides of the lower end of each I-beam. The left side of the first I-beam and the right side of the third I-beam are welded with lifting lugs. The second I-beam and the third I-beam are laid with steel mesh and thick patterned steel plates. The third steel bar at the upper end of the third I-beam is equipped with a guardrail and a high toe plate, and the third steel bar at the upper end of the third I-beam is inserted into Scaffolding poles; the working platform can improve construction progress, work efficiency and save costs.
Description
Technical Field
The invention belongs to the technical field of operation platforms, and particularly relates to a mobile operation platform and a construction method thereof.
Background
The vertical shaft is used as a shield machine initial shaft and has the functions of retaining soil and intercepting water; the vertical shaft is close to the Yangtze river, underground water is abundant, water possibly leaks at the joint of the underground diaphragm walls and the bottom of the pit, even water gushing and sand gushing occur, and the risk is reduced, so open cut forward and backward combined method is adopted for multi-working-surface three-dimensional cross construction to accelerate the construction period (namely, a first layer of earthwork is excavated to be used as a crown beam and a first support, a second layer of earthwork is excavated to be used as a second cast-in-place ring beam and a support after the strength of 80% is reached, and the like until a bottom plate is obtained, the main structure side walls and the foundation pit excavation are carried out three-dimensional cross simultaneously, after the strength of 100% of the second layer of ring beam and the support is reached, an operation platform is erected on the ring beam and the support, a negative layer of structure side wall is constructed, and the like until the last layer of side wall is obtained).
Chinese patent CN212248263U discloses a main structure side wall and foundation pit excavation three-dimensional intersection operation, comprising a beam, a reinforced concrete crown beam and an underground continuous wall, wherein the top of the underground continuous wall is fixedly connected with the reinforced concrete crown beam, the inner wall of the reinforced concrete crown beam is fixedly connected with the beam, a steel pipe support column is arranged between the underground continuous walls, both the left end and the right end of the steel pipe support column are fixedly provided with a threaded steel bar bolt, the outer wall of the threaded steel bar bolt is fixedly provided with a fastening plate and an embedded steel plate, the underground continuous wall mainly comprises a bottom foundation layer, a concrete layer in a pile hole and a fixed sleeve, the bottom foundation layer is arranged in the foundation pit, the fixed sleeve is fixedly arranged on the outer side of the concrete layer in the pile hole, the tail end of each threaded steel bar bolt penetrates through the fixed sleeve and extends into the concrete layer in the pile hole, the tail end of each threaded steel bar bolt is fixedly provided with a shear bar, the shear bar is fixedly connected with the concrete layer in the pile hole, the embedded steel plate is fixedly arranged on the outer side wall of the fixing sleeve, the fastening plate is arranged on the side of the embedded steel plate, a circular ring mounting plate is fixedly arranged on the outer wall of the steel pipe supporting column, an anchor rope main body is arranged on the circular ring mounting plate, and the top of the other end of the anchor rope main body is hinged to the inner wall of the underground continuous wall; through the arrangement of the steel pipe support columns and the twisted steel bolts, the underground diaphragm wall is uniform in stress and strong in support stability, a subway station foundation pit can be stably supported uniformly, the stability in the foundation pit excavation process and after the foundation pit excavation is finished is ensured, the safety and reliability of the construction process can be ensured, the structure between the steel pipe support columns and the underground diaphragm wall is simple, the construction operation is convenient and efficient, the construction amount is small, and the construction is simple, convenient and rapid; the problems that the cross section area of a vertical shaft is small, reinforced concrete supports are dense, the width of a ring beam is narrow, and the construction difficulty and the safety risk are high in the vertical crossing operation of the side wall of the main structure and the excavation of the foundation pit cannot be solved.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a mobile use operation platform which comprises an underground continuous wall, wherein a structural side wall is fixedly arranged on the inner side of the underground continuous wall, a ring frame beam is arranged on the inner side of the structural side wall, a reinforced concrete support is fixedly arranged on the inner side of the ring frame beam and is in a herringbone shape, the upper end of the reinforced concrete support is fixedly arranged at the upper end of the ring frame beam, the middle end of the reinforced concrete support is fixedly arranged at the middle point of the left end and the right end of the ring frame beam, and the lower end of the reinforced concrete support is fixedly arranged at the lower end of the ring frame beam; the structural side wall is provided with a first I-shaped steel, a second I-shaped steel is arranged between the structural side wall and the ring frame beam, a third I-shaped steel is arranged on the inner side of the ring frame beam, the first I-shaped steel, the second I-shaped steel and the third I-shaped steel are arranged in parallel, and the first I-shaped steel, the second I-shaped steel and the third I-shaped steel are welded and connected through a third steel bar; the upper ends of the first I-shaped steel, the second I-shaped steel and the third I-shaped steel are welded with the first steel bar, the first steel bar is connected with a steel bar net piece through welding, the steel bar net piece is welded with the thick figured steel plate, the third steel bar vertically penetrating through the first steel bar, the steel bar net piece and the thick figured steel plate is welded with the upper ends of the first I-shaped steel, the second I-shaped steel and the third I-shaped steel, and the upper end of the third steel bar is inserted into the scaffold upright rod; the lower ends of the first I-beam, the second I-beam and the third I-beam are welded with a second steel bar, the second steel bar is arranged at the upper ends of the ring frame beam, the first cushion block and the second cushion block are arranged on the reinforced concrete support, and the upper end surfaces of the first cushion block and the second cushion block are flush with the upper end surface of the ring frame beam; expansion bolts are arranged on two sides of the lower end of each of the first I-beam, the second I-beam and the third I-beam, the expansion bolts on two sides of the lower end of the first I-beam are connected with the ring frame beam, the expansion bolts on two sides of the lower end of the second I-beam are connected with the first cushion block, and the expansion bolts on two sides of the lower end of the third I-beam are connected with the second cushion block; lifting lugs are welded at the left end of the first I-shaped steel and the right end of the third I-shaped steel.
The invention also provides a construction method for the movable operation platform, which comprises the following steps:
and step 10, inserting the upper ends of the third reinforcing steel bars into the scaffold upright rods, and assembling the scaffold upright rods into a scaffold through the bearing discs, the supporting heads and the cross rods.
Further, the diameters of the first steel bar and the second steel bar in the step 2 are 22mm, and the diameter of the third steel bar is 25 mm.
Further, in the step 2, the first steel bar, the second steel bar and the third steel bar are perpendicular to each other.
Furthermore, in the step 2, the thickness of the thick pattern steel plate is 2mm, the thick pattern steel plate is a substrate made of boiling steel, a honeycomb structure layer is arranged on the inner side of the substrate, patterns are arranged on the outer layer of the substrate, and coating layers are arranged on the patterns.
Further, in the step 3, the distance between the first I-shaped steel and the structural side wall is 10 mm.
Further, a guard rail and a high foot stopping plate are arranged outside the right side of the third I-beam in the step 3, the high foot stopping plate is arranged on the lower side of the guard rail, the height of the guard rail is 1.2m, and the height of the high foot stopping plate is 20 cm.
Furthermore, dense meshes are arranged on the guard railing and the high foot blocking plate, the dense meshes are divided into two layers, the dense meshes arranged on the guard railing are 80 meshes, the dense meshes arranged on the high foot blocking plate are 60 meshes, and preferably, the dense meshes can be replaced by metal meshes.
Compared with the prior art, the invention has the beneficial effects that:
1. the operation platform distributes according to the on-site conditions, and every I-steel lower extreme both sides all are equipped with expansion bolts, and the lug is all welded on the left side of first I-steel, the right side of third I-steel, and fixed dismantlement, hoist and mount removal are convenient for.
2. Under the vertical crossing operation of the construction of the structural side wall and the excavation of the foundation pit, a steel bar mesh and a thick pattern steel plate are laid on the second steel bars, and a guard rail and a high guard foot plate are installed on the third steel bars at the upper end of the third I-shaped steel, so that high falling objects can be effectively prevented from facing the side protection, and the construction safety is improved.
3. The third reinforcing bar of third I-steel upper end inserts scaffold frame pole setting not only accelerates setting up speed, raise the efficiency, the security of scaffold frame and strengthens, and the scaffold frame is more firm, standard, can improve engineering progress, work efficiency, practice thrift the cost.
Drawings
FIG. 1 is a schematic diagram of a front view of a work platform according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a cross-sectional view of B-B shown in fig. 2.
Description of reference numerals:
the method comprises the following steps of 1-underground continuous wall, 2-structural side wall, 3-ring frame beam, 4-reinforced concrete support, 5-first reinforcing steel bar, 6-third reinforcing steel bar, 7-first I-shaped steel, 8-second I-shaped steel, 9-reinforcing steel bar net piece, 10-third I-shaped steel, 11-expansion bolt, 12-lifting lug, 13-first cushion block, 14-second cushion block, 15-second reinforcing steel bar and 16-thick figured steel plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the following description of the present invention will be made with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 3, the present embodiment provides a mobile work platform, including: the inner side of the underground continuous wall 1 is fixedly provided with a structural side wall 2, the inner side of the structural side wall 2 is provided with a ring frame beam 3, the inner side of the ring frame beam 3 is fixedly provided with a reinforced concrete support 4, the reinforced concrete support 4 is in a herringbone shape, the upper end of the reinforced concrete support 4 is fixedly arranged at the upper end of the ring frame beam 3, the middle end of the reinforced concrete support 4 is fixedly arranged at the middle point of the left end and the right end of the ring frame beam 3, the lower end of the reinforced concrete support 4 is fixedly arranged at the lower end of the ring frame beam 3, the structural side wall 2 is provided with a first I-shaped steel 7, a second I-shaped steel 8 is arranged between the structural side wall 2 and the ring frame beam 3, the inner side of the ring frame beam 3 is provided with third I-shaped steels 10 which are arranged in parallel to each other, and the first I-shaped steel 7, the second I-shaped steel 8 and the third I-shaped steel 10 are welded and connected through a third reinforcing steel bar 6; the upper ends of a first I-shaped steel 7, a second I-shaped steel 8 and a third I-shaped steel 10 are welded with a first steel bar 5, the first steel bar 5 is welded with a steel bar mesh 9, the steel bar mesh 9 is welded with a thick figured steel plate 16, a third steel bar 6 vertically penetrating through the first steel bar 5, the steel bar mesh 9 and the thick figured steel plate 16 is welded with the upper ends of the first I-shaped steel 7, the second I-shaped steel 8 and the third I-shaped steel 10, and the upper end of the third steel bar 6 is inserted into a scaffold upright rod (not shown in the figure); the lower ends of the first I-beam 7, the second I-beam 8 and the third I-beam 10 are welded with the second steel bar 15, the second steel bar 15 is arranged at the upper ends of the ring frame beam 3, the first cushion block 13 and the second cushion block 14 are arranged on the reinforced concrete support 4, and the upper end surfaces of the first cushion block 13 and the second cushion block 14 are flush with the upper end surface of the ring frame beam 3; expansion bolts 11 are arranged on two sides of the lower ends of the first I-beam 7, the second I-beam 8 and the third I-beam 10, the expansion bolts 11 on two sides of the lower end of the first I-beam 7 are connected with the ring frame beam 3, the expansion bolts 11 on two sides of the lower end of the second I-beam 8 are connected with a first cushion block 13, and the expansion bolts 11 on two sides of the lower end of the third I-beam 10 are connected with a second cushion block 14; lifting lugs 12 are welded at the left end of the first I-beam 7 and the right end of the third I-beam 10.
The invention also provides a construction method for the movable operation platform, which comprises the following steps:
and step 10, inserting the upper ends of the third steel bars 6 into the scaffold upright rods, and assembling the scaffold upright rods into a scaffold through the bearing discs, the supporting heads and the cross rods.
Furthermore, in step 2, the diameters of the first steel bar 5 and the second steel bar 15 are 22mm, and the diameter of the third steel bar 6 is 25 mm.
Further, in step 2, the first steel bar 5, the second steel bar 15 and the third steel bar 6 are perpendicular to each other.
Further, in the step 2, the thickness of the thick pattern steel plate 16 is 2mm, the thick pattern steel plate is a substrate made of boiling steel, a honeycomb structure layer is arranged on the inner side of the substrate, patterns are arranged on the outer layer of the substrate, and coating layers are arranged on the patterns.
Further, in the step 3, the distance between the first I-shaped steel 7 and the structural side wall 2 is 10 mm.
Further, in the step 3, a guard rail (not shown in the figure) and a high foot stopping plate (not shown in the figure) are arranged outside the right side of the third i-beam 10, the high foot stopping plate is arranged on the lower side of the guard rail, the height of the guard rail is 1.2m, and the height of the high foot stopping plate is 20 cm.
Furthermore, dense meshes are arranged on the guard railing and the high foot blocking plate, the dense meshes are divided into two layers, the dense meshes arranged on the guard railing are 80 meshes, and the dense meshes arranged on the high foot blocking plate are 60 meshes.
Further, the fine mesh net is replaced by a metal mesh.
It should be understood that the above-described embodiments are merely exemplary of the present invention, and are not intended to limit the present invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A mobile use work platform, the work platform comprising:
the inner side of the underground continuous wall (1) is fixedly provided with a structural side wall (2), the inner side of the structural side wall (2) is provided with a ring frame beam (3), the inner side of the ring frame beam (3) is fixedly provided with a reinforced concrete support (4), the reinforced concrete support (4) is in a herringbone shape, the upper end of the reinforced concrete support (4) is fixedly arranged at the upper end of the ring frame beam (3), the middle end of the reinforced concrete support (4) is fixedly arranged at the middle point of the left end and the right end of the ring frame beam (3), and the lower end of the reinforced concrete support (4) is fixedly arranged at the lower end of the ring frame beam (3);
the structural side wall (2) is provided with a first I-shaped steel (7), a second I-shaped steel (8) is arranged between the structural side wall (2) and the ring frame beam (3), third I-shaped steels (10) which are arranged in parallel are arranged on the inner side of the ring frame beam (3), and the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10) are welded and connected through a third steel bar (6);
the upper ends of a first I-shaped steel (7), a second I-shaped steel (8) and a third I-shaped steel (10) are welded with a first steel bar (5), the first steel bar (5) is connected with a steel bar mesh (9) through welding, the steel bar mesh (9) is welded with a thick figured steel plate (16), a third steel bar (6) vertically penetrating through the first steel bar (5), the steel bar mesh (9) and the thick figured steel plate (16) is welded with the upper ends of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10), and the upper end of the third steel bar (6) is inserted into a scaffold upright rod;
the lower ends of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10) are welded with the second steel bar (15), the second steel bar (15) is arranged at the upper ends of the ring frame beam (3), the first cushion block (13) and the second cushion block (14) are arranged on the reinforced concrete support (4), and the upper end surfaces of the first cushion block (13) and the second cushion block (14) are flush with the upper end surface of the ring frame beam (3);
expansion bolts (11) are arranged on two sides of the lower ends of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10), the expansion bolts (11) on two sides of the lower end of the first I-shaped steel (7) are connected with the ring frame beam (3), the expansion bolts (11) on two sides of the lower end of the second I-shaped steel (8) are connected with the first cushion block (13), and the expansion bolts (11) on two sides of the lower end of the third I-shaped steel (10) are connected with the second cushion block (14);
lifting lugs (12) are welded at the left end of the first I-shaped steel (7) and the right end of the third I-shaped steel (10).
2. A mobile use work platform according to claim 1, characterised in that the first (5), second (15) and third (6) rebars have a diameter of 22mm and 25 mm.
3. A mobile work platform according to claim 1, wherein the first (5), second (15) and third (6) rebars are perpendicular to each other.
4. The mobile work platform according to claim 1, characterized in that a guard rail and a high foot stop are arranged outside the right side of the third i-beam (10), the height of the guard rail is 1.2m, and the height of the high foot stop is 20 cm.
5. A mobile use work platform according to claim 1, characterised in that the distance between the first i-section steel (7) and the structural side wall (2) is 10 mm.
6. A mobile work platform according to claim 1, wherein the textured steel plate (16) has a thickness of 2mm, the textured steel plate (16) comprises a substrate made of boiling steel, the inner side of the substrate is provided with a honeycomb layer, the outer layer of the substrate is provided with a texture, and the texture is provided with a coating.
7. The mobile use working platform according to claim 4, wherein the protective guard and the high-blocking foot plate are provided with dense meshes, the dense meshes are two layers, the dense meshes on the protective guard are 80 meshes, and the dense meshes on the high-blocking foot plate are 60 meshes.
8. A mobile use work platform according to claim 7, wherein the fine mesh is replaced by a metal mesh.
9. A construction method for a mobile use work platform according to claim 1, comprising the steps of:
step 1, determining the length and the width of the operation platform;
step 2, processing a first I-shaped steel (7), a second I-shaped steel (8), a third I-shaped steel (10), a first reinforcing steel bar (5), a second reinforcing steel bar (15), a third reinforcing steel bar (6), a reinforcing steel bar mesh (9), an expansion bolt (11) and a thick-pattern steel plate (16) of the operation platform;
step 3, determining the arrangement and blanking lengths of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10) according to the structures of the structural side wall (2) and the ring frame beam (3), and determining an optimal scheme according to the arrangement of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10);
step 4, fixedly arranging a reinforced concrete support (4) in the ring frame beam (3), and paving a first cushion block (13) and a second cushion block (14) on the reinforced concrete support (4);
step 5, laying second steel bars (15) on the reinforced concrete supports (4), the first cushion blocks (13) and the second cushion blocks (14), and laying first I-shaped steel (7), second I-shaped steel (8) and third I-shaped steel (10) on the second steel bars (15);
step 6, fixing the lower ends of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10) by adopting expansion bolts (11);
step 7, laying first reinforcing steel bars (5) at the upper ends of the first I-shaped steel (7), the second I-shaped steel (8) and the third I-shaped steel (10), laying reinforcing steel bar meshes (9) on the first reinforcing steel bars (5), and laying thick-pattern steel plates (16) on the reinforcing steel bar meshes (9);
step 8, hoisting lifting lugs (12) of the first I-beam (7) and the third I-beam (10) by the sling cart, and controlling the horizontal height of the operation platform by adopting a total station;
9, inserting a third steel bar (6) into the first steel bar (7), the steel bar mesh (9) and the thick-pattern steel plate (16);
and 10, inserting the upper ends of the third steel bars (6) into the scaffold upright rods, and assembling the scaffold upright rods into a scaffold through the bearing discs, the supporting heads and the cross rods.
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| CN202110656212.5A CN113373976A (en) | 2021-06-11 | 2021-06-11 | Mobile operation platform and construction method thereof |
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| CN107119904A (en) * | 2017-05-26 | 2017-09-01 | 中国十七冶集团有限公司 | A kind of cantilevered structure truss combined support system |
| CN209082534U (en) * | 2018-09-18 | 2019-07-09 | 青岛市政空间开发集团有限责任公司 | Hanging operating platform sets up device in a kind of more piece open caisson |
| CN109630127A (en) * | 2018-11-22 | 2019-04-16 | 中铁隧道集团二处有限公司 | A kind of construction method of rich water soft stratum ultra-deep shield vertical shaft |
| CN210152291U (en) * | 2019-05-09 | 2020-03-17 | 中建八局第三建设有限公司 | A detachable cantilever unloading platform |
| CN213204915U (en) * | 2020-03-27 | 2021-05-14 | 中国建筑第四工程局有限公司 | Overweight overhanging suspended component supporting system of super high-rise residential conversion layer |
| CN112854719A (en) * | 2021-03-08 | 2021-05-28 | 中建四局华南建设有限公司 | Cantilever operating platform |
| CN215630115U (en) * | 2021-06-11 | 2022-01-25 | 中铁隧道集团二处有限公司 | Mobile use operation platform |
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