CN110552519A - Deep foundation pit assembled type safe passage construction method - Google Patents
Deep foundation pit assembled type safe passage construction method Download PDFInfo
- Publication number
- CN110552519A CN110552519A CN201910814919.7A CN201910814919A CN110552519A CN 110552519 A CN110552519 A CN 110552519A CN 201910814919 A CN201910814919 A CN 201910814919A CN 110552519 A CN110552519 A CN 110552519A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- guide rail
- standard knot
- supporting structure
- stair standard
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- 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
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Steps, Ramps, And Handrails (AREA)
Abstract
The invention relates to a construction method of a deep foundation pit assembled type safe passage, which comprises the following steps: s1, hardening the concrete at the top of the side slope, installing a steel upright post, and building an anti-falling platform on the steel upright post; s2, after the depth of the foundation pit is dug to the height of a standard section of the fabricated stair, mounting a first section of guide rail on the foundation pit supporting structure; s3, lowering the first-stage assembled stair standard knot to the bottom of the foundation pit along the guide rail; s4, after the depth of the foundation pit is dug to the height of the two standard sections of the fabricated stairway, mounting a second section of guide rail and a second-stage standard section of the fabricated stairway; and S5, repeating the fourth step when the height of the standard section of the prefabricated staircase is increased by one for the depth of the foundation pit, and mounting the standard section of the prefabricated staircase to the bottom of the foundation pit by the same method to complete the construction of the whole foundation pit safety channel. The method of the invention is installed from top to bottom, can be used along with excavation, and has safe and rapid construction and convenient installation and disassembly; high reusability, low cost, good economic benefit, stable and safe structure.
Description
Technical Field
The invention belongs to the field of safe channel construction, particularly relates to a vertical safe channel for deep foundation pit construction, and particularly relates to a deep foundation pit assembled safe channel construction method.
Background
In recent years, with the rapid development of the building industry, the number of deep foundation pits is more and more, the vertical safe passages of the deep foundation pits are mostly temporarily erected by adopting steel pipe scaffolds, meanwhile, the foundation pits are always in an excavation state, the temporary passages erected by the steel pipe scaffolds are small in rigidity and large in deformation, great potential safety hazards exist, a large amount of labor and materials are consumed, and the economic benefit is poor; or after the foundation pit is constructed to the bottom of the pit, the foundation of the vertical safe passage is designed and manufactured, and then the vertical safe passage is installed from bottom to top, but the potential safety hazard caused by adopting the temporary vertical safe passage in the process of excavating the foundation pit cannot be avoided all the time.
The patent refers to the field of 'installation or maintenance of buildings for buildings, vehicles, or similar'. 201820811395.7, comprising the steps of: step one, prefabricating each channel section in a segmented manner according to the depth of a foundation pit, and manufacturing each channel section; secondly, transporting each channel section to a construction site, placing the first lower channel section on an embedded part on a concrete foundation, and firmly welding; and step three, vertically installing each channel section from bottom to top in a segmented manner, wherein the segmented sections are connected by bolts. The method has the advantages of quick construction, safe and reliable use, convenient disassembly and repeated use, improves the working efficiency, reduces the construction cost, and is suitable for the up-and-down operation of the constructors of the deep foundation pit of the urban underground comprehensive pipe gallery. But the advantages of the prior process are not reflected, and the process can not be used along with digging.
"a tool for upper and lower foundation pits", application No.: 201821752714.8, it provides a safe, reliable, low cost upper and lower foundation ditch tool of dismouting simultaneously, includes the following steps: welding and manufacturing channel units with uniform sizes; pouring a concrete foundation in the foundation pit; connecting the nodes between the channel units and the slow walking platforms to form a surrounding type upper and lower foundation pit stairs; and after reaching the preset height, the supporting structure is fixedly connected with the foundation pit supporting structure. The tool is convenient and quick to mount and dismount, can be repeatedly used, and greatly reduces the cost. However, the utility of the tool for excavating along with the foundation pit is not shown, and the tool cannot be used along with excavation.
In order to solve the problems, a novel device and a construction method are invented, and the problems and difficulties can be fully solved through the device. The technical problem to be solved by the invention is as follows: according to the device and the construction method, the conventional installation method is changed by manufacturing the standard knot of the vertical safe passage and the sliding track, the vertical safe passage is installed from top to bottom, the temporary vertical passage is prevented from being installed, and the safety guarantee is provided for site construction and managers to get in and out of the foundation pit. The method has the advantages of wide application range, convenience in mounting and dismounting, high reusability, low cost and good structural stability, and well solves the construction technical problem that the safe upper channel and the safe lower channel are inconvenient to mount on a construction site.
Disclosure of Invention
aiming at the technical problems, the invention aims to provide a construction method of a deep foundation pit assembled type safe passage, which is used for solving the problem that the deep foundation pit vertical safe passage cannot be dug at any time.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
A construction method of a deep foundation pit fabricated safe passage is characterized by comprising the following steps:
S1, hardening concrete at the top of the side slope to be constructed, installing a steel upright on the concrete, erecting an anti-falling platform on the steel upright to form a horizontal safety channel, and installing hoisting equipment on the anti-falling platform;
S2, excavating a foundation pit, and installing a first section of guide rail on a foundation pit supporting structure after the depth of the foundation pit is excavated to the height of a standard section of an assembled stair;
S3, transporting the first-stage assembled stair standard knot to the upper side of the foundation pit through hoisting equipment, then lowering the assembled stair standard knot to the bottom of the foundation pit along the guide rail, and finally fixedly connecting the assembled stair standard knot with a foundation pit supporting structure;
S4, continuously excavating the foundation pit, after the depth of the foundation pit reaches the height of the two assembled stair standard knots, installing a second guide rail on the foundation pit supporting structure to lengthen the first guide rail, lowering the first-stage assembled stair standard knot to the bottom of the foundation pit along the second guide rail, and fixedly connecting the first-stage assembled stair standard knot with the foundation pit supporting structure; transporting the second-stage assembled stair standard knot to the upper part of the foundation pit through hoisting equipment, then lowering the second-stage assembled stair standard knot to the upper part of the first-stage assembled stair standard knot along the guide rail, and fixedly connecting the second-stage assembled stair standard knot with a foundation pit supporting structure; finally, fixedly connecting the first-stage assembled stair standard knot with the second-stage assembled stair standard knot;
And S5, repeating the fourth step when the height of the standard section of the prefabricated staircase is increased by one for the depth of the foundation pit, and mounting the standard section of the prefabricated staircase to the bottom of the foundation pit by the same method to complete the construction of the whole foundation pit safety channel.
further, the guide rail is fixedly connected with a foundation pit supporting structure through a foundation pit embedded part, the foundation pit embedded part is embedded in the foundation pit supporting structure, and the guide rail is welded with the foundation pit embedded part.
further, assembled stair standard festival fixed mounting is on an assembly plate, be equipped with the bolted connection point that is used for being connected with excavation supporting construction around the assembly plate, the back of assembly plate is equipped with the guide rail cover that matches with the guide rail.
Further, the method comprises the step S6 of fixing the uppermost assembled stair standard knot by hoisting equipment during dismantling, dismantling and separating the assembled stair standard knot from the foundation pit supporting structure and the adjacent assembled stair standard knot, hoisting the uppermost assembled stair standard knot by the hoisting equipment and conveying the uppermost assembled stair standard knot to a safe area at the top of the side slope; repeating the above actions by analogy, and completely removing the standard sections of the assembled stairway.
The invention has the beneficial effects that:
(1) The invention utilizes the guide rail device to change the conventional method for installing the vertical safe channel, and the method is installed from top to bottom and can be used along with excavation, thereby having safe and rapid construction and convenient installation and disassembly; the construction method has the advantages of high reusability, low cost, good economic benefit and stable and safe structure, and also solves the technical problem of manual work and construction tool passing in the construction process of the deep foundation pit on the construction site.
(2) the invention solves the technical problem that only a steel pipe scaffold can be adopted to set up a temporary upper channel and a temporary lower channel in the construction process of the deep foundation pit; the problem of horizontal and vertical transportation is solved by adding the hoisting equipment, and the problem of vertical sliding of the standard knot is solved by adding the horizontal and vertical movement. The anti-falling platform is additionally arranged, so that not only can falling objects be prevented from being struck, but also space can be provided for installing hoisting equipment, and the use of manpower is greatly reduced. Generally, the conventional installation method of the upper and lower channels is changed, the installation sequence follows the excavation sequence of the foundation pit, the upper and lower channels are installed from top to bottom, the installation height can be synchronized along with the excavation depth of the foundation pit, the effect of along with excavation and installation is achieved, a temporary channel erected by a traditional steel pipe scaffold is replaced, the installation efficiency is improved, the safety performance is improved, the use conditions of manpower and materials are reduced, the cost is reduced, the dismantling process is convenient and rapid, and the construction period is not influenced. The conventional dismantling method is changed when the device is dismantled, a large crane is not needed, and the dismantling can be completed through a hoisting device of the equipment. The method has the advantages of wide application range, convenience in mounting and dismounting, high reusability, low cost and good structural stability, and well solves the construction technical problem that the safe upper channel and the safe lower channel are inconvenient to mount on a construction site.
Drawings
FIG. 1 is a schematic side view of a pit in accordance with the present invention.
FIG. 2 is a schematic front view of a pit in accordance with the present invention.
fig. 3 is a schematic view of a modular stairway segment.
Fig. 4 is a schematic view of the sliding connection between the guide rail and the standard section of the fabricated stairway.
In the figure: 1. assembled stair standard sections; 2. a foundation pit supporting structure; 3. a guide rail; 4. assembling a plate; 5. a steel upright post; 6. an anti-falling platform; 7. a sliding trolley; 8. a wire rope; 9. a guide rail sleeve; 10. a bolted joint; 11. a foundation pit embedded part; 12. a hoisting machine.
Detailed Description
For a better understanding of the present invention, the technical solutions of the present invention will be further described below with reference to the following examples and accompanying drawings.
As shown in fig. 1 to 4, a construction method of an assembled type safe passage of a deep foundation pit includes the following steps:
S1, hardening concrete at the top of the side slope to be constructed, installing a steel upright post 5 on the concrete, erecting an anti-falling platform 6 on the steel upright post 5 to form a horizontal safety channel, and installing hoisting equipment on the anti-falling platform 6; the hoisting equipment comprises a sliding trolley 7 and a winch 12, wherein the sliding trolley 7 runs on the anti-falling platform 6, and the winch 12 is installed on a horizontal safe passage; the sliding trolley 7, the winch 12 and the anti-falling platform 6 form a gantry crane structure together, and the hoisting function is realized.
S2, excavating a foundation pit, and after the depth of the foundation pit is excavated to the height of a standard section 1 of an assembled stair, installing a first section of guide rail 3 on the foundation pit supporting structure 2, wherein the guide rail 3 ensures the verticality H/1000; the guide rail 3 is fixedly connected with the foundation pit supporting structure 2 through a foundation pit embedded part 11, the foundation pit embedded part 11 is embedded in the foundation pit supporting structure 2, and the guide rail 3 is welded with the foundation pit embedded part 11.
s3, the assembly type stair standard knot 1 is fixedly installed on an assembly plate 4, bolt connection points 10 used for being connected with the foundation pit supporting structure 2 are arranged around the assembly plate 4, and a guide rail sleeve 9 matched with the guide rail 3 is arranged on the back of the assembly plate 4; after the assembly type stair standard knot 1 is manufactured, the first-stage assembly type stair standard knot 1 (along a horizontal safety channel) is transported to the upper part of the foundation pit through hoisting equipment, then the assembly type stair standard knot 1 is lowered to the bottom of the foundation pit along a guide rail 3, and finally the assembly type stair standard knot is fixedly connected with a foundation pit supporting structure 2;
S4, continuously excavating the foundation pit, installing a second guide rail 3 on the foundation pit supporting structure 2 to lengthen the first guide rail 3 after the depth of the foundation pit is excavated to the height of the two assembled stair standard knots 1, lowering the first-stage assembled stair standard knot 1 to the bottom of the foundation pit along the second guide rail 3, and fixedly connecting the first-stage assembled stair standard knot 1 with the foundation pit supporting structure 2; transporting the second-stage fabricated stair standard knot 1 (along a horizontal safe channel) to the upper part of the foundation pit through hoisting equipment, then lowering the second-stage fabricated stair standard knot 1 to a position 200mm above the first-stage fabricated stair standard knot 1 along a guide rail 3, calibrating and fixedly connecting the second-stage fabricated stair standard knot with the foundation pit supporting structure 2; and finally, fixedly connecting the first-stage assembled stair standard knot 1 with the second-stage assembled stair standard knot 1.
And S5, repeating the fourth step when the depth of the foundation pit is increased by one height of the assembled stair standard knot 1, and mounting the assembled stair standard knot 1 to the bottom of the foundation pit by the same method to complete the construction of the whole foundation pit safety channel. When the number of the assembled stair standard knots 1 is large, as shown in fig. 1 and 2, when the fourth-stage assembled stair standard knot 1 is installed, the first to third-stage assembled stair standard knots 1 can be used as a whole, and the fourth step can be repeated to respectively lower the first, second and third-stage assembled stair standard knots 1.
s6, when the prefabricated staircase is dismantled, the uppermost prefabricated staircase standard knot 1 is fixed through hoisting equipment, then the prefabricated staircase standard knot 1 is dismantled and separated from the foundation pit supporting structure 2 and the adjacent prefabricated staircase standard knot 1, and the uppermost prefabricated staircase standard knot 1 is hoisted and conveyed to a safe area at the top of the side slope through the hoisting equipment; repeating the above actions by analogy, and completely removing the assembled stair standard knot 1.
The above description is only an application example of the present invention, and certainly, the present invention should not be limited by this application, and therefore, the present invention is still within the protection scope of the present invention by equivalent changes made in the claims of the present invention.
Claims (4)
1. A construction method of a deep foundation pit fabricated safe passage is characterized by comprising the following steps:
S1, hardening concrete at the top of the side slope to be constructed, installing a steel upright post (5) on the concrete, erecting an anti-falling platform (6) on the steel upright post (5) to form a horizontal safety channel, and installing hoisting equipment on the anti-falling platform (6);
S2, excavating a foundation pit, and installing a first section of guide rail (3) on the foundation pit supporting structure (2) after the depth of the foundation pit is excavated to the height of a standard section (1) of the assembled stair;
S3, transporting the first-stage assembled stair standard knot (1) to the upper side of the foundation pit through hoisting equipment, then lowering the assembled stair standard knot 1 to the bottom of the foundation pit along the guide rail (3), and finally fixedly connecting the assembled stair standard knot with the foundation pit supporting structure (2);
s4, continuously excavating the foundation pit, installing a second guide rail (3) on the foundation pit supporting structure (2) to lengthen the first guide rail (3) after the depth of the foundation pit is excavated to the height of the two assembled stair standard knots (1), lowering the first-stage assembled stair standard knot (1) to the bottom of the foundation pit along the second guide rail (3), and fixedly connecting the first-stage assembled stair standard knot with the foundation pit supporting structure 2; the second-stage assembled stair standard knot (1) is transported to the upper part of the foundation pit through hoisting equipment, then is lowered to the upper part of the first-stage assembled stair standard knot (1) along the guide rail (3), and is fixedly connected with the foundation pit supporting structure (2); finally, fixedly connecting the first-stage assembled stair standard knot (1) with the second-stage assembled stair standard knot (1);
And S5, repeating the fourth step when the height of the assembly type stair standard knot (1) is increased every time the depth of the foundation pit is increased, and mounting the assembly type stair standard knot (1) to the bottom of the foundation pit by the analogy, thereby completing the construction of the whole foundation pit safety channel.
2. The construction method of the assembled type safe channel of the deep foundation pit as claimed in claim 1, wherein the guide rail (3) is fixedly connected with the foundation pit supporting structure (2) through a foundation pit embedded part (11), the foundation pit embedded part (11) is embedded in the foundation pit supporting structure (2), and the guide rail (3) is welded with the foundation pit embedded part (11).
3. The construction method of the assembled type safe passage of the deep foundation pit according to the claim 2, characterized in that the assembled type stair standard knot (1) is fixedly installed on an assembling plate (4), bolt connecting points (10) used for being connected with the foundation pit supporting structure (2) are arranged around the assembling plate (4), and a guide rail sleeve (9) matched with the guide rail (3) is arranged on the back surface of the assembling plate (4).
4. The construction method of the fabricated safe passageway of the deep foundation pit according to claim 1, 2 or 3, characterized by further comprising the step S6, when dismantling, fixing the uppermost fabricated stair standard section (1) through hoisting equipment, then dismantling and separating the fabricated stair standard section (1) from the foundation pit supporting structure (2) and the adjacent fabricated stair standard section (1), hoisting the uppermost fabricated stair standard section (1) through the hoisting equipment and transporting to the safe region at the top of the side slope; repeating the above actions by analogy, and completely removing the assembled stair standard knot (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814919.7A CN110552519A (en) | 2019-08-30 | 2019-08-30 | Deep foundation pit assembled type safe passage construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910814919.7A CN110552519A (en) | 2019-08-30 | 2019-08-30 | Deep foundation pit assembled type safe passage construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552519A true CN110552519A (en) | 2019-12-10 |
Family
ID=68738548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910814919.7A Pending CN110552519A (en) | 2019-08-30 | 2019-08-30 | Deep foundation pit assembled type safe passage construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552519A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521111A (en) * | 2020-05-20 | 2020-08-11 | 河南交通职业技术学院 | Traffic civil engineering deep foundation pit ladder cage |
| CN113090072A (en) * | 2021-04-10 | 2021-07-09 | 新力建设集团有限公司 | Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0531633B2 (en) * | 1983-04-22 | 1993-05-13 | Taisei Corp | |
| CN103643678A (en) * | 2013-12-10 | 2014-03-19 | 张继红 | Deep-foundation-pit container-type earth excavating and transporting method |
| CN204590035U (en) * | 2014-12-22 | 2015-08-26 | 天津二建建筑工程有限公司 | Single layered stereo is prefabricated with excavation of foundation pit assembling sunk type construction cat ladder |
| CN205061417U (en) * | 2015-10-19 | 2016-03-02 | 中建一局集团建设发展有限公司 | Soil lifting system for construction of deep foundation pit of building in narrow area |
-
2019
- 2019-08-30 CN CN201910814919.7A patent/CN110552519A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0531633B2 (en) * | 1983-04-22 | 1993-05-13 | Taisei Corp | |
| CN103643678A (en) * | 2013-12-10 | 2014-03-19 | 张继红 | Deep-foundation-pit container-type earth excavating and transporting method |
| CN204590035U (en) * | 2014-12-22 | 2015-08-26 | 天津二建建筑工程有限公司 | Single layered stereo is prefabricated with excavation of foundation pit assembling sunk type construction cat ladder |
| CN205061417U (en) * | 2015-10-19 | 2016-03-02 | 中建一局集团建设发展有限公司 | Soil lifting system for construction of deep foundation pit of building in narrow area |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111521111A (en) * | 2020-05-20 | 2020-08-11 | 河南交通职业技术学院 | Traffic civil engineering deep foundation pit ladder cage |
| CN111521111B (en) * | 2020-05-20 | 2021-06-29 | 河南交通职业技术学院 | Traffic civil engineering deep foundation pit ladder cage |
| CN113090072A (en) * | 2021-04-10 | 2021-07-09 | 新力建设集团有限公司 | Safety ladder way suitable for deep foundation pit slope-making type excavation construction and assembling method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106013052A (en) | Steel sheet pile and open caisson combined underground garage and construction method thereof | |
| KR19990072014A (en) | Lift-up method for building buildings from above to the ground | |
| CN109505309B (en) | Pipe gallery segment displacement system and pipe gallery installation method using same | |
| CN111501839B (en) | Cable shaft | |
| CN110552519A (en) | Deep foundation pit assembled type safe passage construction method | |
| CN113148893A (en) | Hydraulic jacking load-bearing support and mounting method thereof | |
| CN104234447B (en) | Deep foundation ditch tool-type hangs stair | |
| CN117721840A (en) | Full-mechanized construction assembly type subway station and construction method | |
| CN108560566A (en) | The recyclable steel pipe column of combined type and its method for supporting deep foundation pit | |
| CN212405472U (en) | Cross node connection structure of assembled frame structure | |
| CN114991831A (en) | Raise-rope-channel combined layered construction method for elevator shaft machine room chamber | |
| CN211644419U (en) | Assembled tower crane overhauls platform | |
| CN210563326U (en) | Overhead unit type overhead sliding splicing operation platform | |
| CN114875813A (en) | Construction equipment and construction method for conveniently and easily dismantling and rebuilding reinforced concrete steel frame arch bridge | |
| CN111056460A (en) | Assembled tower crane maintenance platform and installation method | |
| CN112627543A (en) | Shaft inner lifting frame for mounting steel beams of core tube elevator shaft and steel beam construction method | |
| CN112854702A (en) | Large-span silo roof construction platform and erection method | |
| CN112761072A (en) | Construction method of deep foundation pit steel trestle ramp | |
| CN111622347A (en) | Cross-shaped node connecting structure of assembled frame structure and construction method thereof | |
| CN217205419U (en) | Assembled steel structure post suspended structure | |
| CN220908941U (en) | Adjustable assembled safety stair | |
| CN113202499B (en) | Long-distance high-lifting underground tunnel construction method | |
| CN215107081U (en) | Large-span silo roofing construction platform shore | |
| CN213626817U (en) | Turnover vertical passing device for reverse splicing unit type deep foundation pit | |
| CN114837440B (en) | Construction method of large-span arch-type steel truss roof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |
|
| RJ01 | Rejection of invention patent application after publication |