CN106836242B - Deep foundation pit anchor cable tensioning assembly type operation platform - Google Patents
Deep foundation pit anchor cable tensioning assembly type operation platform Download PDFInfo
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- CN106836242B CN106836242B CN201710208306.XA CN201710208306A CN106836242B CN 106836242 B CN106836242 B CN 106836242B CN 201710208306 A CN201710208306 A CN 201710208306A CN 106836242 B CN106836242 B CN 106836242B
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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
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
Deep basal pit anchor rope stretch-draw assembled operation platform, including support steel connecting rod, oblique pull rod, steel pole setting, platform pole, railing stand intubate, railing stand, railing handrail pole intubate, vertical handrail pole and support steel sheet, oblique pull rod, steel pole setting are connected with the platform pole and are formed triangle-shaped to strengthen the steel sheet and be connected with support steel connecting rod through component nodal connection, support steel connecting rod and support steel sheet are connected, and the support steel sheet is connected with deep basal pit anchor rope crown beam or waist rail through pre-buried bolt, and railing stand intubate is fixed at platform pole tip, and railing stand axle is inserted and is fixed in railing stand intubate, and railing handrail pole intubate is installed on the lateral wall of railing stand, and vertical handrail pole is inserted in railing handrail pole intubate, constitutes single pin support, is equipped with bamboo plywood and the horizontal handrail pole of platform between the adjacent single pin support. The anchor cable tensioning device can be assembled detachably, has good overall stability, is safe and reliable, is green and environment-friendly, saves the construction period, and can be widely applied to tensioning operation of the anchor cable of the deep foundation pit of the large building.
Description
Technical Field
The invention relates to an assembly type operation platform, in particular to an operation platform for tensioning an anchor cable of a deep foundation pit of a large building.
Background
In the basement foundation pit engineering construction stage of a large building, support engineering is usually involved, and support anchor cables are common structural treatment measures applied in the support engineering. Along with the construction process flow and technical requirements, the foundation pit soil is convenient to excavate in different degrees before the anchor cable is tensioned, so that a temporary operation platform must be set up when the grouting strength of the anchor cable reaches the design requirement and then tensioning is carried out. The common method of construction sites is to adopt movable portal scaffolds or fastener type pipe erecting scaffolds, which requires to compact and level the site at the edge of the foundation pit, ensures the safety and stability of the scaffolds, is time-consuming, needs to invest large manpower and material resources, causes low anchor cable tensioning work efficiency, and cannot perform cross operation among various specialties for foundation pit engineering with short construction period; in addition, after the earthwork around the foundation pit is soaked in rainwater (or underground water), the replacement and compaction treatment must be performed first, and then the scaffold can be erected, which increases the construction cost.
Disclosure of Invention
The invention aims to solve the technical problem that aiming at the defects that a movable portal scaffold or a fastener type frame pipe scaffold needs to be erected as an operation platform when the anchor cable for supporting and protecting a deep foundation pit of a building in the engineering field is tensioned, the safety and stability are poor, time and labor are consumed, the construction cost is high, the cross operation of excavation of the foundation pit cannot be carried out, and the like, the invention provides the anchor cable tensioning operation platform for the deep foundation pit, which is convenient to select materials, convenient to install, low in manufacturing cost, capable of being disassembled and assembled, good in overall stability, safe, reliable, green and environment-friendly, and capable of saving the construction period.
The technical scheme adopted by the invention for solving the technical problems is as follows: an anchor cable stretching and drawing assembly type operating platform for a deep foundation pit comprises a support steel connecting rod, an inclined pull rod, a steel upright rod, a platform rod, a railing upright post inserting tube, a railing upright post, a railing grab rod inserting tube, a longitudinal grab rod and a support steel plate, the inclined pull rod, the steel upright rod and the platform rod are connected to form a triangle which is a main stressed component of the overhanging part of the whole operating platform, the reinforced steel plate is connected with a support steel connecting rod through a member node, the support steel connecting rod is connected with a support steel plate, the support steel plate is connected with the anchor cable crown beam or the waist beam of the deep foundation pit through the embedded bolt, the railing upright post insertion pipe is fixed at the end part of the platform rod, the handrail upright post shaft is inserted and fixed in the handrail upright post inserting tube, the handrail rod inserting tube is arranged on the side wall of the handrail upright post, the longitudinal handrail rod shaft is inserted into the handrail rod insertion pipe to form single supports, and a bamboo rubber plate and a platform transverse handrail rod are arranged between every two adjacent single supports.
And furthermore, a steel upright rod lower part end side steel plate is also arranged and welded on the side part of the steel upright column through a fillet weld.
Further, the bamboo plywood can be replaced by wood purlin and the like.
Furthermore, the handrail rod inserting pipe has 3 supports, one support is used for inserting the longitudinal handrail rod, and the other support is used for inserting the transverse handrail rod.
Furthermore, the end of the longitudinal grab rail is bent by 120 degrees, and the length of the hook is 100 mm.
Furthermore, the end of the platform transverse grab bar is bent by 90 degrees, the length of the hook is 50mm, and 3 supports are arranged.
The support steel plate can be purchased in the market by utilizing waste steel plates in a construction site, and the end side of the support steel plate is provided with pre-buried bolt holes for connecting the operation platform with pre-buried bolts of the top beam or the waist beam of the foundation pit.
The support steel connecting rod, the steel scrap pipe of usable job site also can market purchase, connects the overhanging component of support steel sheet and operation platform, one end adopts the fillet weld to be connected with the support steel sheet, one end welds in operation platform's steel pole setting, support steel connecting rod length with one end with the foundation ditch crown beam or waist rail limit flush can.
The diagonal draw bar, the steel upright post and the platform rod can be purchased in the market by utilizing waste steel pipes on construction sites, the end parts of the three components are cut and flatly connected to form a triangle, the three components are main stress components of the overhanging part of the whole operation platform, and the two node reinforced steel plates are connected with the support steel connecting rod through node penetration welding.
The platform rod can be purchased in the market by using a steel scrap pipe on a construction site, the length of the platform rod is suitable for meeting the requirement of anchor cable tensioning operation, and a steel plate is welded at the end close to a crown beam or a waist beam of a foundation pit so as to be beneficial to stably transmitting the horizontal force of the whole device to the crown beam or the waist beam when the operation platform works; and a short steel pipe is welded at one end of the rail stand column, and the lower end opening of the short steel pipe is sealed by a steel plate, so that the rail stand column is convenient to insert and fix.
The railing stand column can be purchased in the market by using a steel scrap pipe in a construction site, short steel pipes are arranged on the side walls and are used for shaft insertion of platform railing handrails, and the distance between the short steel pipes meets the safety protection requirement of tensioning of anchor cables; the height of the railing upright post meets the safety protection requirement of anchor cable tensioning, the pipe diameter of the railing upright post can meet the requirement of being inserted into a short steel pipe at the end part of the platform rod, and obvious shaking is avoided.
The handrail can be purchased in the market by using the waste steel bars on the construction site, and is divided into a transverse handrail and a longitudinal handrail, one end of the transverse handrail is provided with a 120-degree hook, and the length of the transverse handrail can be only needed to be inserted into the short steel pipe on the side wall of the handrail upright post through a shaft; two ends of the longitudinal rail are provided with 90-degree hooks, and the length is the horizontal distance between two adjacent brackets.
The bamboo plywood or wood balk can be purchased in the market by utilizing a waste template in a construction site, is laid on two adjacent support platform rods and is used for the walking of operators of the operation platform and the arrangement of anchor cable tensioning instruments and equipment; the bamboo plywood or wood purlin should meet the bearing capacity requirements of the operators of the operation platform for walking and the arrangement of anchor cable tensioning instruments and equipment.
In the invention, bolts are embedded in concrete pouring of the top beam or the waist beam of the foundation pit, so that the top beam or the waist beam is convenient to fix with the operation platform; if the anchor bolts are not pre-embedded in advance, the chemical anchor bolts or the steel bars need to be embedded, and the chemical anchor bolts or the steel bars need to meet the requirements of the pulling resistance and the shearing resistance of the operating platform during working. The distance between the embedded bolt or the chemical anchor bolt or the embedded bar and the side line of the top beam or the waist beam of the foundation pit is consistent, so that the potential safety hazard caused by shaking and loosening during installation of the operating platform is avoided.
In the invention, the operation platform support can be processed and manufactured on site in a construction site according to the sizes of the top beam or the waist beam of the foundation pit and the anchor cable, and then the support is installed and fixed and the bamboo plywood or the wood purlin is laid at the edge of the foundation pit.
According to the invention, the steel member and the welding line are subjected to anti-corrosion and anti-rust treatment, so that the construction life is prolonged.
In the invention, the number of the operation platform supports can be selected according to the engineering requirement, and 4-6 supports are generally selected for circular mounting and dismounting in consideration of the continuity of field anchor cable tensioning work.
Before the foundation pit anchor cable tensioning operation is carried out by using the method, the bearing capacity of the operation platform is subjected to accounting, particularly the connection of node welding seams, the fastening degree of embedded steel plates, the bearing capacity performance of bamboo rubber plates or wood balms and the like.
The anchor cable tensioning device has the advantages of convenient material selection of components, low processing cost, convenient installation, detachable assembly, safe and reliable working, high production efficiency, low labor intensity and construction period saving, and can be widely applied to the tensioning operation of the anchor cable in the basement foundation pit engineering construction stage of a large building.
Drawings
FIG. 1 is a drawing of a mounting fixed shaft of a single support of a deep foundation pit anchor cable tensioning assembly type operating platform;
FIG. 2 is a side elevation view of a single-frame support installation and fixation of a deep foundation pit anchor cable tensioning assembly type operation platform;
FIG. 3 is a drawing of a mounting fixed shaft of two brackets of a deep foundation pit anchor cable stretching assembly type operating platform (no bamboo plywood is laid);
fig. 4 is a drawing of a mounting fixed shaft of two brackets of a deep foundation pit anchor cable stretching assembly type operating platform (bamboo plywood laying).
Detailed Description
The invention is further explained with reference to the drawings and the embodiments.
Examples
Referring to fig. 1-4, this embodiment includes support steel connecting rod 1, oblique pull rod 2, steel upright rod 3, platform rod 4, railing upright rod insertion tube 5, railing upright rod 6, railing armrest rod insertion tube 7, vertical grab bar 8 and support steel plate 9, oblique pull rod 2, steel upright rod 3 are connected with platform rod 4 to form a triangle, are the main stress components of the overhanging portion of the whole operation platform, are connected with support steel connecting rod 1 through component node connection reinforcing steel plate 13, support steel connecting rod 1 is connected with support steel plate 9 through fillet weld, support steel plate 9 is connected with deep foundation pit anchor cable crown beam or waist rail 14 through embedded bolt 10, railing insertion tube upright rod 5 is fixed at the end of platform rod 4, railing upright rod 6 is inserted and fixed in railing upright rod insertion tube 5, railing rod insertion tube 7 is installed on the lateral wall of railing upright rod 6, the longitudinal handrail rod 8 is inserted in the handrail rod insertion tube 7 to form single supports, and a bamboo rubber plate 12 and a platform transverse handrail rod 15 are arranged between the adjacent single supports.
In this embodiment, a steel upright rod lower end side steel plate 11 is further provided, and the steel upright rod lower end side steel plate 11 is welded to the side portion of the steel upright 3 through a fillet weld.
In this embodiment, the foundation pit crown beam or wale 14 is not a component member of this embodiment, but a carrier or a service object of this embodiment.
In this embodiment, the bamboo plywood 12 is used for walking of the operation platform staff and placing of the anchor cable tensioning instrument equipment. Of course, the bamboo plywood 12 may be replaced by wood purlin or the like.
In this embodiment, the support steel connecting rod 1 is a square tube 50 × 4, is made of Q235B, has a length of 500mm, and is made of steel tube scraps for a temporary shed on a construction site.
In this embodiment, the diagonal draw bar 2 is a square pipe 50 × 4, is made of Q235B, has a length of 1320mm, and is made of steel pipe remnants of a temporary shed on a construction site.
In this embodiment, the steel upright 3 is a square tube 50 × 4, is made of Q235B, has a length of 700mm, and is made of steel pipe scraps for a temporary shed on a construction site.
In this embodiment, the platform rod 4 is a square tube 50 × 4, is made of Q235B, has a length of 1150mm, and is made of steel pipe scraps for a temporary shed on a construction site.
In this embodiment, the railing upright post inserting pipe 5 is a square pipe 50 × 4, is made of Q235B, has a length of 100mm, and is plugged by using steel pipe scraps produced in a temporary shed on a construction site and welding a steel plate 8mm thick at the bottom.
In this embodiment, the railing post 6 is a square tube of 40 × 4, is made of Q235B, has a length of 1200mm, and is made of steel pipe scraps for a temporary shed on a construction site.
In this embodiment, the handrail rod insertion tube 7 has 3 supports, namely, 40 × 4 square tubes, Q235B materials and 50mm in length, and steel tube remnants for manufacturing temporary sheds on construction sites are welded on the wall 6 of the handrail upright post, one is used for inserting the longitudinal handrail rod 8, and 2 are used for inserting the transverse handrail rods 15.
In this embodiment, vertical grab rail 8, for round steel 20, the material is Q235, length is 1200mm, utilize job site's reinforcing bar defective material, 120 crotch are rolled over to the tip, crotch length is 100 mm.
In this embodiment, the support steel plate 9 is cut from a scrap steel plate at a construction site, has a size of 400mm × 350mm × 20mm (length × width × thickness), is made of Q235B, has a hole with an end side distance of 50mm, has a hole diameter of 20mm, and is used for connecting the operation platform with the embedded bolt 10 of the foundation pit crown beam or the wale.
In this embodiment, the diameter of the embedded bolt 10 is 20mm, the material is Q235, the length is 300mm, the building material market is purchased, it should be ensured that the top of the bolt is 80mm higher than the concrete surface of the crown beam or the waist beam during installation, the installation requirement of the support steel plate 9 is met, the edge distance between the embedded bolt and the crown beam or the waist beam is 300mm, and the transverse distance along the foundation pit wall is 1500 mm.
In this embodiment, the steel plate 11 at the lower end of the steel column is cut from scrap steel plate at a construction site, and has dimensions of 100mm × 150mm × 10mm (length × width × thickness), and is made of Q235B.
In this embodiment, the thickness of the bamboo plywood 12 is 20mm, the length is 1500mm, and the bamboo plywood 12 and the platform rod 4 are bound firmly by using the construction site concrete member template waste.
In this example, the member joint is connected to a reinforcing steel plate 13 made of Q235B and having a thickness of 8mm, and is formed by cutting a steel scrap plate at a construction site, and is connected to a support steel link 1, a diagonal member 2, and a steel upright member 3 by fillet welding, and 2 brackets are provided.
In this embodiment, the transverse platform grab rail 15 is made of round steel 20, is made of Q235 and is 1600mm long, and hooks with 90-degree bent ends are arranged at the end parts of the transverse platform grab rail by utilizing residual steel bars in a construction site, the length of each hook is 50mm, and 3 supports are arranged.
The anchor cable tensioning device is convenient for the continuity of anchor cable tensioning work, 5 supports are arranged in the device, and the device can be circularly mounted and dismounted for use on site according to an anchor cable tensioning process.
The design uniform distribution load of the invention is 4.0kN/m 2 When the anchor cable is stretched, controlling that 3 persons cannot stand or walk between two brackets at the same time, and the weight of the added instrument cannot exceed 500 kg; and if overload is needed, the components are subjected to design checking calculation again.
When the steel structure is processed and manufactured, relevant regulations of the current steel structure engineering construction and acceptance specifications GB 50205-2001 of China are strictly required; the quality of the welding rod is in accordance with the regulations of the national current quality standard GB/T-5117 or 5118, and the type of the selected welding rod is matched with the steel of each component.
Before the anchor cable tensioning operation is carried out by using the invention, whether the embedded bolt 10 is screwed down or not is checked.
Before the anchor cable tensioning operation is carried out by using the method, whether the connecting welding line of each steel member is torn or not is checked, and potential safety hazards are eliminated.
When the invention is used for tensioning the anchor cable, a dense mesh type safety net can be laid for enhancing the safety of operators.
Claims (6)
1. Deep basal pit anchor rope stretch-draw assembled operation platform, its characterized in that: comprises a support steel connecting rod, a diagonal draw bar, a steel upright rod, a platform rod, a railing upright post inserting tube, a railing upright post, a railing armrest rod inserting tube, a longitudinal armrest rod and a support steel plate, the inclined pull rod, the steel upright rod and the platform rod are connected to form a triangle which is a main stressed component of the overhanging part of the whole operating platform, the reinforced steel plate is connected with a support steel connecting rod through a member node, the support steel connecting rod is connected with a support steel plate, the support steel plate is connected with the anchor cable crown beam or the waist beam of the deep foundation pit through the embedded bolt, the railing upright post insertion pipe is fixed at the end part of the platform rod, the handrail upright post shaft is inserted and fixed in the handrail upright post inserting tube, the handrail rod inserting tube is arranged on the side wall of the handrail upright post, the longitudinal handrail rod shaft is inserted into the handrail rod insertion pipe to form single supports, and a bamboo rubber plate and a platform transverse handrail rod are arranged between every two adjacent single supports.
2. The deep foundation pit anchor cable tensioning assembly type operating platform as claimed in claim 1, wherein: the steel upright post is also provided with a steel upright post lower part end side steel plate, and the steel upright post lower part end side steel plate is welded on the side part of the steel upright post through a fillet weld.
3. A deep foundation pit anchor cable tensioning assembly type operation platform according to claim 1 or 2, wherein: the bamboo plywood is replaced by wood purlin.
4. A deep foundation pit anchor cable tensioning assembly type operation platform according to claim 1 or 2, wherein: the handrail rod inserting pipes are provided with 3 supports, one support is used for penetrating the longitudinal handrail rods, and the other support is used for penetrating the transverse handrail rods.
5. A deep foundation pit anchor cable tensioning assembly type operation platform according to claim 1 or 2, wherein: the end of the longitudinal grab rail is bent by 120 degrees, and the length of the hook is 100 mm.
6. A deep foundation pit anchor cable tensioning assembly type operation platform according to claim 1 or 2, wherein: the end of the platform transverse grab bar is bent by 90 degrees, the length of the hook is 50mm, and 3 supports are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208306.XA CN106836242B (en) | 2017-03-31 | 2017-03-31 | Deep foundation pit anchor cable tensioning assembly type operation platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710208306.XA CN106836242B (en) | 2017-03-31 | 2017-03-31 | Deep foundation pit anchor cable tensioning assembly type operation platform |
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| Publication Number | Publication Date |
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| CN106836242A CN106836242A (en) | 2017-06-13 |
| CN106836242B true CN106836242B (en) | 2022-09-02 |
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| CN201710208306.XA Active CN106836242B (en) | 2017-03-31 | 2017-03-31 | Deep foundation pit anchor cable tensioning assembly type operation platform |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113202151B (en) * | 2021-05-07 | 2024-02-27 | 湖南六建久华建设有限公司 | Accurate measuring equipment of super deep space pile drilling bored concrete pile bolck elevation |
| CN113863639A (en) * | 2021-10-26 | 2021-12-31 | 中国建筑第四工程局有限公司 | Semi-mounted movable anchor cable tensioning operation platform |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0019789D0 (en) * | 2000-08-12 | 2000-09-27 | Alan Dick & Company Limited | Improvements relating to support assemblies |
| CN101250942A (en) * | 2008-03-19 | 2008-08-27 | 韩亚伦 | Large mould plate pylon |
| CN201598820U (en) * | 2010-03-10 | 2010-10-06 | 中国建筑一局(集团)有限公司 | Single point suspension external hanging bracket |
| CN102383588B (en) * | 2011-08-25 | 2013-11-06 | 深圳市特辰科技股份有限公司 | Lifting platform for protecting safety of high-level construction |
| CN204098463U (en) * | 2014-08-08 | 2015-01-14 | 徐韩伟 | Builder's jack |
| CN104372928A (en) * | 2014-10-30 | 2015-02-25 | 无锡市安捷脚手架有限公司 | Cantilever type scaffold assembly |
| CN206752473U (en) * | 2017-03-31 | 2017-12-15 | 湖南省第六工程有限公司 | A kind of deep excavation cable stretching assembled operating platform |
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2017
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