CN112727093A - Climbing construction method for constructing large-span high-rise building - Google Patents
Climbing construction method for constructing large-span high-rise building Download PDFInfo
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- CN112727093A CN112727093A CN202011583346.0A CN202011583346A CN112727093A CN 112727093 A CN112727093 A CN 112727093A CN 202011583346 A CN202011583346 A CN 202011583346A CN 112727093 A CN112727093 A CN 112727093A
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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
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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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
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
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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
- E04G5/007—Devices and methods for erecting scaffolds, e.g. automatic scaffold erectors
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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
- E04G5/04—Means for fastening, supporting, or bracing scaffolds on or against building constructions
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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
Abstract
The invention discloses a climbing construction method for constructing a large-span high-rise building, which comprises the following steps after a climbing device is installed in place: performing overall/regional climbing construction on the column body and the wall body, climbing to the bottom of the first short-span beam, and pouring concrete; installing wall-attached supporting pieces on the column body and/or the wall body; hoisting the first bottom template in place, and locking the first bottom template after the elevation is adjusted; binding the column, the wall and the first beam by using the steel bars; the climbing device climbs in whole or in regions by one step, and the long-span channel platform is arranged to be level with the beam bottom of the long-span second cross beam; installing a wall-attached support; installing a second bottom template, and locking the second template after the elevation of the second template is adjusted by utilizing the longitudinal height adjustable supporting device; binding reinforcing steel bars for the second cross beam; concrete pouring is carried out on the templates of the closed columns, the walls and the beams; the above processes are cyclically performed at each floor of the large-span high-rise building.
Description
Technical Field
The invention relates to the field of industrial building construction, in particular to a climbing construction method for constructing a large-span high-rise building.
Background
For high-rise buildings, in particular super high-rise buildings, for example in the field of industrial buildings, high-rise heights and large spans are often required in order to be able to install large high-rise industrial equipment. The existing construction method has the problems of long construction period, high cost and the like.
For example, in a project of building a cement plant, as one of core process workshops of a cement project, a cement preheater belongs to a super high-rise building under process limitation, and has the characteristics of large floor height and large span, for example, the height of some preheaters can be up to 150, the floor height of each floor can be 10 to 20 meters, and in order to facilitate the installation of large-scale equipment, the span of each cross beam is very large and can be 5 to 15 meters.
In the current construction, the concrete structure construction process of the preheater still stays on the traditional old construction process of setting up a scaffold as a bearing support, and the construction process has the problems of long construction period, high cost, high quality and safety risk and the like. The current advanced high-rise/super high-rise construction process such as creeping formwork, slip form or other high-efficiency construction processes are limited by the structural characteristics of the cement preheater, and have a lot of inapplicability. Similar problems exist in the construction of other super high-rise buildings.
Disclosure of Invention
In order to solve or alleviate the above-mentioned problems in the prior art, according to one aspect of the present disclosure, a climbing construction method for constructing a large-span high-rise building is proposed.
In the climbing construction method, after the climbing apparatus is assembled and installed in place, the climbing construction method includes the steps of: performing overall/partition climbing construction on the cylinder and the wall, climbing to the bottom of a first cross beam with short span and pouring concrete, wherein two ends of the first cross beam are bridged between vertical cylinders and/or walls; installing wall-attached supporting pieces on the columns and/or the wall body; hoisting a first bottom template of the first cross beam in place, and locking the first bottom template after elevation adjustment by utilizing the longitudinal height adjustable supporting device; binding the column, the wall and the first beam by using the steel bars; the climbing device climbs in whole or in regions by one step, and the long-span channel platform is arranged to be level with the beam bottom of the long-span second cross beam; installing a wall attachment support for the second beam; installing a second bottom template for a second cross beam, and locking the second template after the elevation of the second template is adjusted by utilizing the longitudinal height adjustable supporting device; binding reinforcing steel bars for the second cross beam; concrete pouring is carried out on the templates of the closed columns, the walls and the beams; the above processes are cyclically performed at each floor of the large-span high-rise building.
Preferably, in one embodiment according to the present disclosure, a climbing construction method for constructing a high-rise building is proposed. The high-rise building has an overall height of 50 to 150 m and a layered story height of 10 to 20m, each story comprising a plurality of first beams of 5 to 8 m and at least one second beam spanning between vertical members, the second beam having a lateral span greater than that of the first beams, the climbing construction method comprising the steps of:
A. installing, assembling and arranging a first climbing device close to a vertical column to be built, a second climbing device arranged outside the high-rise building to be built and a third climbing device arranged inside the high-rise building to be built;
B. climbing construction of the whole body and/or the subarea of the column body and the wall body to be built is implemented, the construction is climbed to the beam bottom of the first cross beam and/or the second cross beam to be built at the upper layer, and concrete is poured on the corresponding column body and the wall body;
C. transversely mounting wall-attached supporting pieces between the climbing devices at the climbing height position for bearing the load of the first cross beam and/or the second cross beam to be built;
D. hoisting a first bottom template for constructing a first cross beam in place, and locking after adjusting the elevation by using a jack;
E. performing reinforcement construction for constructing a column, a wall and a first beam on the layer;
F. the first climbing device, the second climbing device and the third climbing device climb integrally and/or regionally in one step, and a first channel platform corresponding to the first cross beam is set to be approximately equal to the beam bottom of the first cross beam;
G. wall-attached supports for the second cross beam are transversely mounted between the climbing devices;
H. installing a second bottom template for the second cross beam, adjusting the elevation of the second bottom template by using a jack, and locking the second bottom template;
I. binding reinforcing steel bars for the second cross beam;
J. closing the column, the wall and the templates of the cross beams, and pouring concrete;
and then performing a cyclic process from B to J on each layer until capping.
In one embodiment of the climbing construction method according to the disclosure, the wall attaching support for the first cross beam is a detachable split support, and the first bottom formwork is dismantled and subsequently constructed in the following manner:
the climbing device climbs the height of the longitudinal formworks of the two first cross beams, and the estimated strength of the poured concrete exceeds 75% during climbing;
arranging an upwardly convex leaning frame K1 on a transverse platform T1 of the climbing device;
unlocking a jack abutting against the first bottom formwork and lowering the height of the jack;
unlocking the first bottom form BM1 and lifting the first bottom form to the outside of the leaning frame K1 with a lifting device;
after the detachable split support MS1 for the first cross beam is detached, the detachable split support MS1 is placed on the inner side of the backrest frame K1;
and continuously climbing the vertical member to the bottom of the next beam to be built and pouring concrete.
Preferably, the wall-attached support for the second beam is a detachable split support MS2, and a load part of the detachable split support is provided with a slide rail extending laterally; a jack is arranged on the detachable split support, a template truss BH2 is supported upwards by the jack, the template truss BH2 is arranged to span between two adjacent vertical members, a second bottom template BM2 is arranged on the template truss, and a transversely extending folding operation platform is arranged on the template truss; the second bottom formwork is dismantled and subsequently constructed in the following mode:
operating by using a bottom side channel of the supporting platform at the beam bottom of the second cross beam, and retracting the folding operating platform at the beam side;
lowering the jack, unlocking the second bottom template BM2, and integrally hoisting the second bottom template, the template truss BH2 and the folding operation platform to the upper layer;
dismantling the detachable split supporting piece, and hoisting the detachable split supporting piece and the slide rail to the upper layer;
and mounting the second bottom template, the template truss, the folding operating platform, the detachable split supporting piece and the slide rail in place, leveling and locking.
In one embodiment of the climbing construction method according to the disclosure, in step B, each climbing is performed with the cycle work of binding steel bars of a column body and a wall body, climbing of each climbing device, closing of a formwork and pouring of concrete; in the construction of the other floors than the first floor, the removal work of the bottom formworks for the first cross beam is required to be carried out during climbing of the other floors.
Preferably, the high-rise building has a cubic concrete structure, the periphery of the high-rise building is a reinforced concrete structure, and the interior of the high-rise building is a steel structure.
The special climbing construction for the super-high buildings such as cement plant preheaters overcomes many adverse factors existing in the current structural construction process, and has the advantages of short construction period, high efficiency, good quality, greatly improved safety performance and the like.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the disclosure, as claimed.
Drawings
Further objects, features and advantages of the present disclosure will become apparent from the following description of embodiments of the present disclosure, with reference to the accompanying drawings, in which:
fig. 1-2 are schematic views of a climbing construction procedure a according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a process b in a climbing construction method according to an embodiment of the present disclosure,
fig. 4 to 6 show schematic views of procedures b1 to b3 in the climbing construction method of the present disclosure;
FIG. 7 shows a climbing construction step c
FIG. 8 is a schematic view of climbing construction steps d and e;
FIG. 9 is a schematic view of climbing construction processes g, h, i;
FIG. 10 is a schematic view of the climbing construction process h 1;
FIG. 11 is a schematic view of the climbing construction process f; and
fig. 12 is a schematic view of the climbing construction process j.
Detailed Description
The objects and functions of the present disclosure and methods for accomplishing the same will be apparent by reference to the exemplary embodiments. However, the present disclosure is not limited to the exemplary embodiments disclosed below; it can be implemented in different forms. The nature of the description is merely to assist those skilled in the relevant art in a comprehensive understanding of the specific details of the disclosure.
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. In the drawings, the same reference numerals denote the same or similar parts, or the same or similar steps.
The disclosure provides a climbing construction method suitable for high-rise or super high-rise buildings, in particular to the field of super high-rise industrial buildings. In the field of industrial construction, in order to adapt to various kinds of huge equipment, it is necessary to construct ultra-high buildings, and these buildings usually have long-span beams erected between columns or walls. E.g. over 7 meters, up to 15 meters in length. In the existing construction process, the construction cost and the construction progress of the large-span cross beams have many defects.
Also, high-rise industrial equipment is often required to be high-rise and large-span in order to be able to install the equipment.
For example, these high-rise buildings may have an overall height of 50 to 150 meters, a story height of 10 to 20 meters. In the building, use a plurality of vertical cylinders as the support, construct the great crossbeam of span between the cylinder. For example in a preheater in a cement plant, each floor may comprise a number of first beams (short span beams) of 5 to 8 meters and at least one second beam (long span beam).
The climbing construction method comprises the following steps after the climbing device is assembled and installed in place:
performing overall/partition climbing construction on the cylinder and the wall, climbing to the bottom of a short-span cross beam and pouring concrete, wherein the short-span cross beam is bridged between the cylinder and the wall;
installing wall-attached supporting pieces on the columns and/or the wall body;
hoisting the bottom template of the short span beam in place, and locking the bottom template after the elevation of the bottom template is adjusted by utilizing the longitudinal height adjustable supporting device;
binding the column, the wall and the short span beam by using the steel bars;
the climbing device climbs integrally/regionally in one step, and the long-span channel platform is leveled with the beam bottom of the long-span beam;
installing wall-attached supports for long span beams;
installing a bottom template of the long-span beam, and locking the bottom template after the elevation of the bottom template is adjusted by utilizing the longitudinal height adjustable supporting device;
binding long-span beam reinforcing steel bars;
and (5) concrete pouring is carried out on the templates of the closed columns, the walls and the beams.
And then circularly performing the above steps on each floor of the high-rise building.
Preferably, the wall-attached supporting piece is a detachable split type supporting piece
In a preferred embodiment, and in particular with reference to figures 1 to 12, the climbing construction method according to the present disclosure comprises the following steps:
A. installing, assembling and arranging a first climbing device P1 for approaching a vertical column to be erected, a second climbing device P2 arranged outside the high-rise building to be erected and a third climbing device P3 arranged inside the high-rise building to be erected;
B. climbing construction of the whole body and/or the subarea of the column body and the wall body to be built is implemented, the construction is climbed to the beam bottom of the first cross beam and/or the second cross beam to be built at the upper layer, and concrete is poured on the corresponding column body and the wall body;
C. transversely mounting split type supporting assemblies between the climbing devices at the climbing height position for bearing the load of the first cross beam and/or the second cross beam to be built;
D. hoisting a bottom template of a first beam for constructing a first cross beam in place, and locking after adjusting the elevation;
E. performing reinforcement construction for constructing a column, a wall and a first beam on the layer;
F. the first climbing device P1, the second climbing device P2 and the third climbing device P3 climb integrally and/or regionally in one step, and a first channel platform corresponding to the first cross beam is arranged to be approximately equal to the bottom of the first cross beam;
G. a split type supporting assembly for a second cross beam is transversely arranged between the climbing devices;
H. installing a bottom template of the second cross beam, and locking after adjusting the elevation;
I. binding reinforcing steel bars for the second cross beam;
J. closing the column, the wall and the templates of the cross beams, and pouring concrete;
and then performing a cyclic process from B to J on each layer until capping.
In one embodiment of the climbing construction method according to the disclosure, in step B, each climbing is performed with the cycle work of binding steel bars of a column body and a wall body, climbing of each climbing device, closing of a formwork and pouring of concrete; in the construction of the other floors than the first floor, the removal work of the bottom formworks for the first cross beam is required to be carried out during climbing of the other floors.
In one embodiment of the climbing construction method according to the present disclosure, referring to the attached drawings, the wall attaching support for the first beam is a detachable split support, and the first bottom form is disassembled and subsequently constructed in the following manner:
b 1: the climbing device climbs the height of the longitudinal formworks of the two first cross beams, and the estimated strength of the poured concrete exceeds 70% during climbing, preferably the strength of the concrete exceeds 75%;
b 2: arranging an upwardly convex leaning frame K1 on a transverse platform T1 of the climbing device;
unlocking the jack against the first bottom form BM1 and lowering the height of the jack;
unlocking the first bottom template BM1 and lifting the first bottom template BM1 to the outside of the leaning frame K1 with a lifting device Q1;
the detachable split support MS1 for the first cross beam is detached and then is placed on the inner side of the leaning frame;
b3, continuously climbing the vertical member, climbing to the bottom of the next beam to be built and pouring concrete.
Preferably, the wall-attached support for the second beam is a detachable split support MS2, and a load part of the detachable split support is provided with a slide rail BS2 extending laterally; a jack is arranged on the detachable split support MS2, a template truss NH2 is upwards supported by the jack, the template truss is arranged to span between two adjacent vertical members, the second bottom template BM2 is arranged on a template truss BH2, and a transversely extending folding operation platform is arranged on the template truss; the second bottom form is dismantled and subsequently constructed in the following manner (see fig. 10):
operating by using a bottom side channel of the supporting platform at the beam bottom of the second cross beam, and retracting the folding operating platform at the beam side;
lowering the jack, unlocking the second bottom template, and integrally hoisting the second bottom template, the template truss and the foldable operation platform to the upper layer;
dismantling the detachable split supporting piece, and hoisting the detachable split supporting piece and the slide rail to the upper layer;
and mounting a second bottom template BM2, a template truss BH2, a folding operation platform BP2, a detachable split support MS2 and a sliding rail BS2 in place, leveling and locking.
In a specific embodiment of the climbing construction method according to the present disclosure, in step D, the bottom formwork of the first beam is installed by using an electric hoist to install a hanging point on the steel bar platform, and the bottom formwork is locked after being subjected to elevation adjustment by a jack.
Preferably, the high-rise building has a cubic concrete structure, the periphery of the high-rise building is a reinforced concrete structure, and the interior of the high-rise building is a steel structure.
In one embodiment of the climbing construction method according to the present disclosure, the high-rise building is a cement plant preheater. For example, the height of the preheater is 90-120 meters, the span of the first beam is 5-8 meters, and the second beam is 8-15 meters.
Hereinafter, the climbing construction method according to the present disclosure is specifically explained and explained with reference to examples.
Taking a preheater in a cement plant as an example, the structure of the preheater is one of core process workshops of cement projects, is restricted by technical characteristics of cement production processes, the overall height of the building can reach 120m, the floor height is too large, generally 12-15 m, and the span of a beam body between columns or walls is different from 5-15 m.
The structure design of the traditional preheater at present has two structure types, namely a steel structure and a concrete structure, but the whole expense of the project is measured, and the cement preheater is more economical and reasonable when the periphery of the structure adopts a reinforced concrete structure and the interior adopts the steel structure type. And is also the main development direction of the structural design and selection of the current cement preheater.
For example, in a construction work for a preheater in a cement plant, the following construction method (corresponding to each step of the capital letters with a lower case letter number) is employed.
a. Construction preparation, the assembly of the pre-heater dedicated climbing frame equipment, in this embodiment, three climbing devices as shown in fig. 1 are used;
b. performing overall/partition climbing construction on the column and the wall, climbing to the bottom of the beam and pouring concrete;
c. a split type support is arranged and used for bearing the construction load of the upper beam;
d. hoisting the bottom template of the inner beam with the span of 7m in place, and locking the bottom template after the elevation is adjusted by a jack;
e. binding columns, walls and reinforcing steel bars of the inner beam with 7m span;
f. climbing the whole/divided areas of the creeping formwork part by one step, wherein a channel platform with a span of more than 7m is level with the bottom of a beam with a span of 7 m;
g. the beam split type support with the installation span of more than 7m is arranged;
h. mounting a beam bottom template with a span of more than 7m, and locking after elevation adjustment through a jack;
i. binding span beam reinforcing steel bars with the length of more than 7 m;
j. concrete pouring is carried out on the closed column, wall and beam template;
then executing each layer to execute b-j circulation work.
Wherein, in each step, the construction step is also executed.
In the step b: and (3) performing cycle work of steel bar binding, frame climbing, template sealing and concrete pouring during each climbing. Except the first floor, the dismantling work of the bottom template of the trabecular beam with the span of 7m is needed during the climbing of other floor heights, and the work can be divided into the following steps:
b1, climbing two formwork heights, wherein the expected period is 7d (the estimated strength of the concrete is 75% at the moment);
b2, at the moment, the hanging platform is used for removing the template within the span of 7m, and the template is placed on the hydraulic platform leaning frame body;
b3, continuously climbing the vertical member to the bottom of the beam and pouring concrete;
in the step d: the hanging points on the steel bar platform are installed by adopting an electric hoist, a beam bottom formwork with a span of 7m is installed, and the beam bottom formwork is locked after elevation adjustment is carried out through a jack.
h, step (b): except the installation of the first layer of beam bottom die, the beam bottom die dismounting work is required to be implemented before the work of other layers, and the work can be decomposed into two works of h1 and h 2:
h1, operating by using the bottom channel of the long-span beam bottom support equipment platform, retracting the beam side folding type operating platform, operating the beam bottom mould car to dismantle the upper beam with the span of more than 7m and removing the side face of the concrete beam.
h2, integrally hoisting the beam bottom die to the upper layer, and mounting, positioning, leveling and locking.
By implementing the climbing construction method in the preheater, the advantages of shortening the construction period, improving the efficiency and the construction quality, greatly improving the safety performance and the like can be realized.
According to the climbing construction method disclosed by the disclosure, the limitation caused by the fact that the building is in a super high-rise building, the height of a layer is large, and the span is large can be broken through, and climbing formwork, a sliding formwork or other efficient construction processes can be utilized.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (8)
1. A climbing construction method for constructing a large-span high-rise building, characterized in that, in the climbing construction method, after assembling and installing a climbing device in place, the climbing construction method comprises the following processes:
performing overall/partition climbing construction on the cylinder and the wall, climbing to the bottom of a first cross beam with short span and pouring concrete, wherein two ends of the first cross beam are bridged between vertical cylinders and/or walls;
installing wall-attached supporting pieces on the columns and/or the wall body;
hoisting a first bottom template for a first cross beam in place, and locking the first bottom template after elevation adjustment by utilizing a longitudinal height adjustable supporting device;
binding the column, the wall and the first beam by using the steel bars;
the climbing device climbs in whole or in regions by one step, and the long-span channel platform is arranged to be level with the beam bottom of the long-span second cross beam;
installing a wall attachment support for the second beam;
installing a second bottom template for a second cross beam, and locking the second template after the elevation of the second template is adjusted by utilizing the longitudinal height adjustable supporting device;
binding reinforcing steel bars for the second cross beam;
concrete pouring is carried out on the templates of the closed columns, the walls and the beams;
the above processes are cyclically performed at each floor of the large-span high-rise building.
2. The climbing construction method according to claim 1, wherein the large-span high-rise building has an overall height of 50 to 150 m, a story height of 10 to 20m, each story being provided with a first cross member and a second cross member bridged between vertical members, the climbing construction method comprising the steps of:
A. installing, assembling and arranging a first climbing device close to a vertical column to be built, a second climbing device arranged outside the high-rise building to be built and a third climbing device arranged inside the high-rise building to be built;
B. climbing construction of the whole body and/or the subarea of the column body and the wall body to be built is implemented, the construction is climbed to the beam bottom of the first cross beam and/or the second cross beam to be built at the upper layer, and concrete is poured on the corresponding column body and the wall body;
C. transversely mounting wall-attached supporting pieces between the climbing devices at the climbing height position for bearing the load of the first cross beam and/or the second cross beam to be built;
D. hoisting a first bottom template for constructing a first cross beam in place, and locking after adjusting the elevation by using a jack;
E. performing reinforcement construction for constructing a column, a wall and a first beam on the layer;
F. the first climbing device, the second climbing device and the third climbing device climb integrally and/or regionally in one step, and a first channel platform corresponding to the first cross beam is set to be approximately equal to the beam bottom of the first cross beam;
G. wall-attached supports for the second cross beam are transversely mounted between the climbing devices;
H. installing a second bottom template for the second cross beam, adjusting the elevation of the second bottom template by using a jack, and locking the second bottom template;
I. binding reinforcing steel bars for the second cross beam;
J. closing the column, the wall and the templates of the cross beams, and pouring concrete;
and then performing a cyclic process from B to J on each layer until capping.
3. The climbing construction method according to claim 2, wherein the wall attaching support for the first cross beam is a detachable split support, and the first bottom formwork is dismantled and subsequently constructed in the following way:
the climbing device climbs the height of the longitudinal formworks of the two first cross beams, and the estimated strength of the poured concrete exceeds 75% during climbing;
arranging an upwards convex leaning frame on a transverse platform of the climbing device;
unlocking a jack abutting against the first bottom formwork and lowering the height of the jack;
unlocking the first bottom template and hoisting the first bottom template to the outer side of the leaning frame by using a hoisting device;
the detachable split supporting piece for the first cross beam is detached and then placed to the inner side of the leaning frame;
and continuously climbing the vertical member to the bottom of the next beam to be built and pouring concrete.
4. The climbing construction method according to claim 2 or 3, wherein the wall attaching support for the second beam is a detachable split support, and a load part of the detachable split support is provided with a slide rail extending laterally; a jack is arranged on the detachable split supporting piece, a template truss is upwards supported by the jack and is arranged to span between two adjacent vertical members, the second bottom template is arranged on the template truss, and a transversely extending foldable operating platform is arranged on the template truss;
the second bottom formwork is dismantled and subsequently constructed in the following mode:
operating by using a bottom side channel of the supporting platform at the beam bottom of the second cross beam, and retracting the folding operating platform at the beam side;
lowering the jack, unlocking the second bottom template, and integrally hoisting the second bottom template, the template truss and the foldable operation platform to the upper layer;
dismantling the detachable split supporting piece, and hoisting the detachable split supporting piece and the slide rail to the upper layer;
and mounting the second bottom template, the template truss, the folding operating platform, the detachable split supporting piece and the slide rail in place, leveling and locking.
5. The climbing construction method according to claim 4,
in the step B, the circular work of binding the steel bars of the column body and the wall body, climbing of each climbing device, closing of the template and pouring of concrete is carried out every time climbing; in the construction of the other floors than the first floor, the removal work of the bottom formworks for the first cross beam is required to be carried out during climbing of the other floors.
6. The climbing construction method according to claim 5, wherein the high-rise building has a cubic concrete structure, and the periphery of the high-rise building has a reinforced concrete structure and the inside has a steel structure.
7. The climbing construction method according to claim 6, wherein the high-rise building is a cement plant preheater.
8. The climbing construction method according to claim 7, wherein the height of the preheater is 90 to 120m, the span of the first beam is 5 to 8 m, and the span of the second beam is 8 to 15 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011583346.0A CN112727093B (en) | 2020-12-28 | 2020-12-28 | Climbing construction method for constructing large-span high-rise building |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011583346.0A CN112727093B (en) | 2020-12-28 | 2020-12-28 | Climbing construction method for constructing large-span high-rise building |
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| Publication Number | Publication Date |
|---|---|
| CN112727093A true CN112727093A (en) | 2021-04-30 |
| CN112727093B CN112727093B (en) | 2022-09-09 |
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