CN112096054A - Simple formwork support and integral casting method for large-depth elevator shaft and collector well in building bottom plate - Google Patents
Simple formwork support and integral casting method for large-depth elevator shaft and collector well in building bottom plate Download PDFInfo
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- CN112096054A CN112096054A CN202010877695.7A CN202010877695A CN112096054A CN 112096054 A CN112096054 A CN 112096054A CN 202010877695 A CN202010877695 A CN 202010877695A CN 112096054 A CN112096054 A CN 112096054A
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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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/08—Forms, which are completely dismantled after setting of the concrete and re-built for next pouring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- Mining & Mineral Resources (AREA)
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- Mechanical Engineering (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
A simple formwork and an integral casting method for a large-depth elevator shaft and a water collecting well in a building bottom plate are characterized by comprising the following steps: a. the method comprises the steps of manufacturing an elevator shaft inner supporting structure and a template by a processing factory, wherein the cross section of the template is square, a steel pipe with the diameter of 800mm is selected for the diameters of a steel cylinder and a bottom plate, the periphery of the shaft is bound according to design drawings, the thickness of a protective layer is reserved, d, when concrete is poured, the steel cylinder is poured from the inside of the steel cylinder, e, when the strength of the concrete meets the requirement of form removal, a telescopic supporting rod is adjusted, the steel cylinder is lifted out, and then the template is removed. The template supporting device has the advantages of simple structure, convenience in manufacturing, capabilities of solving the problems of flexible adjustment of internal supports with different section sizes, anti-floating of the template in the well, anti-leakage and vibration of concrete at the bottom of the well and the like, greatly reducing the time and cost for removing the support and the template in the well, being flexible and simple in mounting and dismounting operation, accelerating the construction progress, facilitating turnover and saving cost.
Description
Technical Field
The invention relates to a concrete pouring method, in particular to a simple and convenient formwork support and an integral pouring method for a large-depth elevator shaft and a collector well in a building bottom plate.
Background
With the acceleration of city construction process, high-rise buildings are emerging like bamboo shoots in spring after rain, and the design and construction technology of the high-rise buildings is mature day by day. Because the deep sunken elevartor shaft and collector well of high-rise building raft foundation design for satisfying the functional requirement, corresponding this position need adopt the suspended form construction, when concreting, because anti-floating measure is improper to lead to the concrete to leak the vibration with the well die block closure, often cause this position template to go up to float, bad phenomena such as rib are leaked to the well bottom concrete honeycomb, seriously influence the geometric dimensions and the service function of elevartor shaft and collector well, also influence structure construction quality simultaneously, later stage rectification difficulty.
The known methods of concreting the elevator shaft and collector wells therefore present the inconveniences and problems described above.
Disclosure of Invention
The invention aims to provide a safe and reliable simple formwork and an integral casting method for a large-depth elevator shaft and a collector well in a building bottom plate.
In order to achieve the purpose, the technical solution of the invention is as follows:
a simple formwork and an integral casting method for a large-depth elevator shaft and a water collecting well in a building bottom plate are characterized by comprising the following steps:
a. the elevator shaft inner supporting structure and the template are manufactured by a processing factory, the cross section of the template is square, the elevator shaft inner supporting structure is arranged on the inner side of a square template, the supporting structure comprises eight telescopic supporting rods, a supporting beam and a lantern ring, the supporting beam is square channel steel, the square channel steel is tightly attached to the inner side of the square template, the lantern ring is made of a steel plate with the thickness of 15mm and the width of 150mm into a steel ring, the diameter of the steel ring is 20mm larger than that of a steel cylinder arranged in the steel ring, the steel ring is formed by fixing two semicircular rings through bolts and wrapping the steel cylinder, the eight telescopic supporting rods are arranged between the lantern ring and the square channel steel in an equal division mode, one end of each telescopic supporting rod is arranged on the outer side of the circumference of the lantern ring;
b. the diameter of the steel cylinder III is 800mm, the steel cylinder III is divided into two sections of steel cylinders with the lengths of 500mm and 1000mm, the splicing joints of the two sections of steel cylinders are connected by flanges, the bottom of the steel cylinder penetrates through a bottom template of a well, the top of the steel cylinder is level with the surface of a port of the template, a plurality of layers of supporting beams are arranged on the outer side of the steel cylinder at equal intervals, a steel cylinder fixing measure is adopted to prevent the steel cylinder from sliding downwards, the length of a telescopic supporting rod is adjusted according to the design size of an elevator shaft and a water collecting well, and the telescopic supporting rod is tightly;
c. binding a bottom plate and reinforcing steel bars around the well according to a design drawing, reserving the thickness of a protective layer, and integrally hoisting and fixing the template and the support system into the well;
d. when concrete is poured, pouring is firstly carried out from the steel cylinder, and when the concrete interface at the bottom of the elevator shaft and the water collecting well is close to the bottom template of the elevator shaft and the water collecting well and the concrete vibrating surface in the steel cylinder is in a state of no air bubbles and sinking, the concrete is uniformly poured around the outer side of the first elevator shaft and water collecting well template in a layered manner;
e. and when the strength of the concrete meets the requirement of form removal, adjusting the telescopic supporting rod, lifting the steel cylinder out, and removing the form.
The simple formwork support and the integral casting method for the large-depth elevator well and the collector well in the building bottom plate can be further realized by adopting the following technical measures.
The method, wherein the channel steel specification is 12# -16# channel steel.
In the method, the lantern ring is made of a steel plate with the thickness of 15mm and the width of 150mm to form a steel ring.
After the technical scheme is adopted, the simple formwork support and the integral pouring method for the large-depth elevator well and the water collecting well in the building bottom plate have the following advantages:
1. the template supporting device has simple structure and convenient manufacture;
2. the problems of flexible adjustment of internal supports with different section sizes, floating resistance of the template in the well, leakage and vibration prevention of concrete at the bottom of the well and the like are solved, the telescopic rod device is utilized to shorten the length of the support for dismantling, the support can be dismantled from the inside of the well smoothly, and the time and cost for dismantling the support and the template in the well are also greatly reduced;
3. the mounting and dismounting operation is flexible and simple, the construction progress is accelerated, the turnover is convenient, and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a template supporting structure according to an embodiment of the present invention;
fig. 2 is a schematic view of formwork and concrete pouring according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the following examples and the accompanying drawings.
Example 1
The invention relates to a simple formwork and an integral casting method for a large-depth elevator shaft and a collector well in a building bottom plate, which comprises the following steps:
a. manufacturing an in-well supporting structure and a template 1 in a processing plant, wherein the supporting structure comprises a telescopic supporting rod 2, a supporting beam 5 and a lantern ring 6, the supporting beam 5 adopts 12# -16# channel steel, the lantern ring 6 adopts a steel plate with the thickness of 15mm and the width of 150mm to manufacture a ring, the diameter of the steel plate is 20mm larger than that of a steel cylinder 3, two semicircular lantern rings are fixed through bolts and wrapped on the outer side of the steel cylinder, and the fixed tail end of the telescopic supporting rod 2 is firmly welded with the lantern ring; fig. 1 is a schematic view of a formwork supporting structure according to an embodiment of the present invention.
b. A steel cylinder 3 is arranged at the center, a steel pipe with the diameter of 800mm is preferably selected and is divided into pipe sections with the length of 500mm and 1000mm, a splicing joint is connected by a flange, the bottom of the steel cylinder 3 penetrates through a well bottom template 1 and is level with the surface of the template, a lantern ring 6 supporting structure is arranged at the outer side of the steel cylinder at equal intervals, a fixed anti-sliding measure is adopted, the length of a telescopic supporting rod is adjusted according to the design size of a well, and the telescopic supporting rod is close to a batten back ridge 4 which is vertically fixed; fig. 2 is a schematic view of formwork and concrete pouring according to an embodiment of the present invention.
c. Binding a bottom plate and reinforcing steel bars around the well according to a design drawing, reserving the thickness of a protective layer, and integrally hoisting and fixing the template 1 and the support system into the well;
d. when concrete is poured, the concrete is poured from the steel cylinder 3, and when the well bottom concrete interface is close to the well bottom template and the concrete vibrating surface in the steel cylinder 3 is in a state of no bubbles and sinking, the concrete is uniformly poured in layers towards the periphery of the outer side of the well template 1;
e. and when the strength of the concrete meets the requirement of form removal, adjusting the telescopic supporting rod 2, lifting the steel cylinder 3 out, and removing the form.
The invention has substantive characteristics and obvious technical progress, the invention is a simple formwork support and an integral casting method for a large-depth elevator well and a water collecting well in a building bottom plate, aiming at the bad phenomena that the geometric dimension of a well is deformed and deviated, the honeycomb of the concrete at the bottom of the well is leaked and the like, which are caused by the construction problems that the floating and deformation of a template in the well, the vibration leakage of the concrete at the bottom of the well and the like are easy to occur in more projects when the water collecting well, the elevator well and the like in a raft foundation of a building basement are cast at one time, and the simple formwork support device. Firstly, manufacturing an in-well supporting structure and a template in a processing plant, arranging a steel cylinder in the center, penetrating the bottom of the steel cylinder through the bottom template and keeping the bottom of the steel cylinder flat with the surface of the template, sleeving the supporting structure on the outer side of the steel cylinder at equal intervals, adopting a fixed anti-sliding measure, and adjusting the length of a supporting telescopic rod to be close to a back edge of the template according to the design size of a well; then binding the bottom plate and the reinforcing steel bars around the well according to a design drawing, reserving the thickness of a protective layer, and integrally hoisting and fixing the template and the support system into the well; and finally, when concrete is poured, firstly, the concrete is poured in layers from the steel cylinder, when the bottom concrete interface is close to the bottom formwork and the steel cylinder concrete is vibrated and does not sink, the concrete is uniformly poured around the well in layers, and when the concrete strength meets the requirement, the formwork is removed and the concrete is maintained in time. By the method, the problems of flexible adjustment of internal supports with different section sizes, floating resistance of the template in the well, leakage vibration prevention of concrete at the bottom of the well and the like are solved, the telescopic rod device is utilized to shorten the length of the support when the support is removed, the support can be smoothly removed from the inside of the well, and the time and cost for removing the support and the template in the well are greatly reduced. The construction method ensures the construction quality, is flexible and simple in mounting and dismounting operation, accelerates the construction progress, facilitates the turnover and saves the cost.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes or modifications without departing from the spirit and scope of the present invention. Accordingly, all equivalents are intended to fall within the scope of the invention, which is defined in the claims.
Claims (3)
1. A simple formwork and an integral casting method for a large-depth elevator shaft and a water collecting well in a building bottom plate are characterized by comprising the following steps:
a. manufacturing an elevator shaft inner supporting structure and a template by adopting a processing factory, wherein the cross section of the template is square, the elevator shaft inner supporting structure is arranged on the inner side of a square template, the supporting structure comprises eight telescopic supporting rods, a supporting beam and a sleeve ring, the supporting beam is square channel steel, the square channel steel is tightly attached to the inner side of the square template, the sleeve ring is made into a steel ring by adopting a steel plate with the thickness of 15mm and the width of 150mm, the diameter of the steel ring is 20mm larger than that of a steel cylinder arranged in the steel ring, the steel ring is formed by fixing two semicircular rings through bolts and wrapping the steel cylinder, the eight telescopic supporting rods are equally arranged between the sleeve ring and the square channel steel, one end of each telescopic supporting rod is arranged on the outer side of the circumference of the sleeve ring, and the other end of each telescopic supporting rod is arranged at the four corner ends of the square channel steel in;
b. the diameter of the steel cylinder III selects a steel pipe with the diameter of 800mm, the steel pipe is divided into two sections of steel cylinders with the lengths of 500mm and 1000mm, the splicing joints of the two sections of steel cylinders are connected by flanges, the bottom of the steel cylinder penetrates through a bottom template, the top of the steel cylinder is level with the surface of a port of the template, a plurality of layers of supporting beams are arranged at the outer side of the steel cylinder at equal intervals, a steel cylinder fixing measure is adopted to prevent the steel cylinder from sliding downwards, the length of the telescopic supporting rod II is adjusted according to the design size of an elevator shaft and a water collecting well, and the telescopic supporting rod II is;
c. binding a bottom plate and reinforcing steel bars around a well according to a design drawing, reserving the thickness of a protective layer, and integrally hoisting and fixing a template I and a support system into the well;
d. when concrete is poured, pouring is carried out from the steel cylinder III, and when concrete interfaces at the bottom of the elevator shaft and the water collecting well are close to the bottom template of the elevator shaft and the water collecting well and the concrete vibrating surface of the steel cylinder III is in a state of no bubbles and sinking, the concrete is poured uniformly in layers around the outer side of the elevator shaft and the water collecting well template I;
e. and when the strength of the concrete meets the requirement of form removal, adjusting the telescopic support rod, lifting the steel cylinder out, and removing the template.
2. The simple formwork and integral casting method for the large-depth elevator well and the collector well in the building bottom plate according to claim 1, wherein the channel steel is 12# to 16# channel steel.
3. The simple formwork and integral casting method for large-depth elevator well and collector well in building floor according to claim 1, wherein the sleeve ring is made of steel plate with thickness of 15mm and width of 150 mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010877695.7A CN112096054A (en) | 2020-08-27 | 2020-08-27 | Simple formwork support and integral casting method for large-depth elevator shaft and collector well in building bottom plate |
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| CN202010877695.7A CN112096054A (en) | 2020-08-27 | 2020-08-27 | Simple formwork support and integral casting method for large-depth elevator shaft and collector well in building bottom plate |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322972A (en) * | 2021-05-21 | 2021-08-31 | 广东省建筑工程集团有限公司 | Support structure for reducing length-to-thickness ratio of lattice column of deep foundation pit and construction method |
| CN115110539A (en) * | 2022-07-06 | 2022-09-27 | 中建八局第三建设有限公司 | Construction method for erecting formwork on one side around sump pit |
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| JPH06228915A (en) * | 1993-02-05 | 1994-08-16 | Kanegafuchi Chem Ind Co Ltd | Strut of elevated bridge, etc., and construction method thereof |
| CN202672037U (en) * | 2012-04-13 | 2013-01-16 | 中铁十七局集团第三工程有限公司 | Annular inner membrane self-stabilization support system of reinforced concrete structure |
| CN104372947A (en) * | 2014-11-14 | 2015-02-25 | 富于安（福建）环保模板有限公司 | Integral mold plate feeding and retreating construction method for elevator shaft |
| CN105822061A (en) * | 2016-04-06 | 2016-08-03 | 中国十七冶集团有限公司 | Formwork mounting and support reinforcing system for collector well, elevator shaft and the like |
| CN106869493A (en) * | 2017-04-19 | 2017-06-20 | 中天建设集团有限公司 | One kind cheats new formwork system and its construction method in hole |
| CN206916760U (en) * | 2017-06-16 | 2018-01-23 | 湖南省第四工程有限公司 | A kind of reusable sump internal mould device |
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2020
- 2020-08-27 CN CN202010877695.7A patent/CN112096054A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06228915A (en) * | 1993-02-05 | 1994-08-16 | Kanegafuchi Chem Ind Co Ltd | Strut of elevated bridge, etc., and construction method thereof |
| CN202672037U (en) * | 2012-04-13 | 2013-01-16 | 中铁十七局集团第三工程有限公司 | Annular inner membrane self-stabilization support system of reinforced concrete structure |
| CN104372947A (en) * | 2014-11-14 | 2015-02-25 | 富于安（福建）环保模板有限公司 | Integral mold plate feeding and retreating construction method for elevator shaft |
| CN105822061A (en) * | 2016-04-06 | 2016-08-03 | 中国十七冶集团有限公司 | Formwork mounting and support reinforcing system for collector well, elevator shaft and the like |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113322972A (en) * | 2021-05-21 | 2021-08-31 | 广东省建筑工程集团有限公司 | Support structure for reducing length-to-thickness ratio of lattice column of deep foundation pit and construction method |
| CN115110539A (en) * | 2022-07-06 | 2022-09-27 | 中建八局第三建设有限公司 | Construction method for erecting formwork on one side around sump pit |
| CN115110539B (en) * | 2022-07-06 | 2024-03-01 | 中建八局第三建设有限公司 | Construction method for single-side formwork around water collection pit |
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Application publication date: 20201218 |