CN115853287A - Forward and reverse combined construction method for large-span roof building in narrow site - Google Patents
Forward and reverse combined construction method for large-span roof building in narrow site Download PDFInfo
- Publication number
- CN115853287A CN115853287A CN202211692850.3A CN202211692850A CN115853287A CN 115853287 A CN115853287 A CN 115853287A CN 202211692850 A CN202211692850 A CN 202211692850A CN 115853287 A CN115853287 A CN 115853287A
- Authority
- CN
- China
- Prior art keywords
- steel structure
- truss
- construction
- reserved
- main
- 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
Images
Landscapes
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a forward and backward combined construction method of a large-span roof building in a narrow place, which comprises the steps of firstly constructing a main structure, reserving a channel for hoisting construction by a crane during construction, erecting a steel structure splicing place on a constructed main structure roof when a truss column foundation of the main structure is constructed and the designed strength is high, splicing a steel structure truss, erecting the crane by using the reserved channel after the steel structure truss is spliced, hoisting the steel structure truss, effectively utilizing the sequence and space of building construction, and improving the construction efficiency and the space utilization rate; and the main structure is divided into two stages for construction, the non-solid frame material used for constructing the main structure firstly can be repeatedly used in the construction of the post-construction main structure in a circulating way, and the construction cost is reduced.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a forward and reverse combined construction method for a large-span roof building in a narrow place.
Background
With the continuous expansion of the market demand scale of high-tech electronic products, the construction demand of high-tech electronic plants is also greatly increased. A typical high-tech electronic chip factory building generally adopts a structural form of a frame structure body and a steel structure roof, has the characteristics of multiple working procedures and tight construction period in the construction process, and structurally has the characteristics of more roof truss trusses, large span of single-product trusses and large weight.
The building structure generally adopts a construction method of a 'normal method' or a 'reverse method'. The 'normal method' is that a concrete main body structure is constructed firstly, and then a steel structure roof truss is installed by adopting a 'sliding method'; the method has high requirements on the field, and the steel structure steel frame needs to be pre-assembled and hoisted by enough field around the steel structure steel frame. The 'reverse construction method' is that a 'high-altitude subsection assembling method' is adopted to firstly install the steel structure roof truss, and the roof steel frame can be constructed up and down simultaneously, and the method is that the roof truss is generally a steel structure column support or a concrete independent column support.
With the capacity expansion demand of the domestic semiconductor industry, part of semiconductor enterprises have the demand of expanding the original old factory area. The biggest problem in the construction process of the semiconductor factory buildings is that the built factory buildings or auxiliary factory buildings are arranged around the semiconductor factory buildings, the construction site is narrow, the construction cannot be carried out by adopting a 'normal method', and the construction method of a 'reverse method' is not suitable for the main structure of the building. The invention provides a forward and backward combined construction method for a large-span roof building in a narrow place to solve the problems.
Disclosure of Invention
The invention provides a forward and reverse combined construction method for a large-span roof building in a narrow field, which meets the construction requirement of the large-span roof building in the narrow field by the forward and reverse combined construction method.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a forward and backward combined construction method for a large-span roof building in a narrow place comprises the following steps:
s1, raft construction: constructing a basic raft on the ground;
s2, constructing a main structure: constructing a main body structure firstly, constructing to a truss column foundation, and reserving a channel between the main body structures constructed firstly;
s3, hoisting a steel structure: hoisting a steel structure by using the reserved channel, splicing the middle section steel structure truss, hoisting after splicing and installing the middle section steel structure truss, splicing and hoisting the side section steel structure truss, and finally connecting the steel structure trusses with each other to form a roof steel structure;
s4, sealing the reserved channel: and after the hoisting of the steel roof structure is completed, constructing a main structure of the reserved channel, and connecting the main structure with the main structure constructed in advance to form a whole.
Further, in the step S2, when the main body structure is constructed first, a connection joint is reserved at a reserved passage of the main body structure, and the reserved connection joint is divided into a beam connection joint and a column connection joint according to different structures.
Further, in the step S2, the reserved width of the reserved channel is comprehensively determined according to the specification of the crane, the weight of the steel structure truss, the gravity center position and the lifting height.
Further, in step S3, the concrete operation steps of assembling the steel structure are as follows:
s31, laying an assembly platform on a roof of a main construction structure, wherein the assembly platform comprises a bottom cushion plate and an assembly frame, and the assembly frame is arranged on the bottom cushion plate;
s32, hoisting the steel structure assembling member to an assembling platform;
s33, assembling the steel structure truss on the assembling platform in an inclined mode;
and S34, after the steel structure truss is assembled, lifting the assembled steel structure truss to rotate by using a crane, and installing the assembled steel structure truss to a design position.
Furthermore, in step S4, the number of beam joints reserved in the main structure to be constructed is three, namely, the lap joint located at the upper part, the mechanical joint located at the middle part, and the mechanical joint located at the lower part, wherein mutual lap joints are established in the beam reinforcements of the main structure reserved in the upper part and the middle part, the lap joints are staggered with each other, and the beam reinforcements located at the lower part are anchored on the column support.
Further, the column connecting joints are mechanical joints, the height of the mechanical joints is 50-80mm lower than the top surface of the basic raft, and the mechanical joints cover the cushion layer and the base plate.
Further, the post attach fitting is the crossover sub, including basic raft board owner muscle and conversion board, conversion board fixed connection is on the top of basic raft board owner muscle, and the post owner muscle fixed connection who reserves passageway major structure is on the top surface of conversion board.
Further, the bottom cushion plate is a steel plate with the thickness of 1mm, and the assembling frame is composed of waffle plates.
The invention has the following beneficial effects:
the construction method combining the forward and reverse is adopted to match with the mode of assembling the steel structure truss in high altitude in a segmented manner, so that the operation of quickly completing building construction in a narrow space is realized, the construction time of the steel structure roof and the civil engineering closing time are effectively reduced, meanwhile, the materials of the main structure can be repeatedly used, and the construction cost is reduced.
Drawings
FIG. 1 is a schematic view of the construction process of the present invention;
FIG. 2 is a schematic view of the building structure of the present invention;
FIG. 3 is a schematic view of the sectional construction operation of the steel structure truss of the present invention;
FIG. 4 is a schematic diagram of a construction process of a middle steel structure truss according to the invention;
FIG. 5 is a schematic view of the position of the reserved joint according to the present invention;
fig. 6 is a schematic connection construction diagram of the reserved connection joint of the present invention.
Reference numerals are as follows: 1, constructing a main structure, 11-beam connecting joints, 12-column connecting joints, 2-middle section steel structure trusses and 3-side section steel structure trusses.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the specification, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
As shown in fig. 1, a forward and backward combined construction method for a large-span roof building in a narrow place comprises the following steps:
s1, raft construction: constructing a basic raft on the ground;
s2, constructing a main structure: constructing the main structure 1 firstly, constructing to a truss column foundation, and reserving a channel between the main structure 1 constructed firstly;
s3, hoisting the steel structure truss: hoisting a steel structure by using the reserved channel, splicing the middle steel structure truss 2, hoisting after splicing and installing the middle steel structure truss 2, splicing and hoisting the side section steel structure truss 3, and finally connecting the steel structure trusses with each other to form a roof steel structure;
s4, closing a reserved channel: and after the hoisting of the steel roof structure is completed, the construction of the main structure of the reserved channel is carried out, and the main structure 1 is connected into a whole with the prior construction.
The building structure applicable to the invention is formed by combining the frame shear wall structure and the large-span steel structure roof truss, and the surrounding site of the building to be constructed is narrow, the necessary steel structure truss assembling and hoisting site is lacked, and the necessary space for adopting the integral transfer steel structure roof truss is lacked. Therefore, the construction of the main structure is firstly carried out, a channel for hoisting construction by a crane is reserved during construction, when the main structure constructs a truss column foundation and the design strength is high, a steel structure splicing field is erected on a constructed main structure roof, the steel structure truss is spliced, the crane is erected by using the reserved channel after the steel structure truss is spliced, then the steel structure truss is hoisted, the sequence and the space of the construction are effectively utilized, and the construction efficiency and the space utilization rate are improved; and the main structure is divided into two stages for construction, the non-solid material used for constructing the main structure 1 firstly can be repeatedly used in the construction of the post-construction main structure in a circulating way, and the construction cost is reduced.
As shown in fig. 2, 3, this embodiment is preferred, set up two reservation passageways altogether, divide into three-section in the north and south with the building, the steel construction roof divide into triplex in the north and south, middle section steel structure truss 2 in the middle of being located sets up the steel construction roof that forms the middle part along east-west direction interval, assemble and hoist on the major structure that lies in the middle part, the side steel structure truss 3 that lies in north and south both sides sets up the steel construction roof that forms north and south two along east-west direction interval, assemble and hoist on the major structure that lies in north and south two respectively.
As shown in fig. 5 and 6, further, in step S2, when the main body structure 1 is constructed first, a connection joint is reserved at the reserved passage of the main body structure, the reserved connection joint is divided into a beam connection joint 11 and a column connection joint 12 according to different structures, the beam connection joint 11 is used for being connected with a beam reinforcement of the main body structure of the reserved passage, and the column connection joint 12 is used for being connected with a column main reinforcement of the main body structure of the reserved passage.
Further, in the step S2, the reserved width of the reserved channel is comprehensively determined according to the specification of the crane, the weight of the steel structure truss, the gravity center position and the lifting height. The reserved width of the reserved channel accounts for 1/3 of the plane area of the main structure, when the reserved channel is closed, the structural strength of the main structure 1 is constructed firstly, the form removal condition is met, and enough time is provided for turnover of non-solid frame materials such as templates and the like, so that the non-solid frame materials with secondary turnover can be used when the reserved channel is closed, and the construction cost is reduced
As shown in fig. 2, 3 and 4, further, in step S3, the concrete operation steps of assembling the steel structure are as follows:
s31, paving an assembly platform: an assembly platform is laid on a roof of the main structure 1, so that a space field can be fully utilized to assemble a steel structure truss, and building construction is completed in a narrow space by matching with a reserved channel; the assembly platform comprises a bottom base plate and an assembly frame, and the assembly frame is arranged on the bottom base plate;
s32, hoisting a component: hoisting the steel structure assembling member to the assembling platform;
s33, obliquely placing and assembling: the steel structure truss is assembled on the assembling platform in an inclined mode, when in-situ assembling is adopted, the steel structure truss positioned in the middle section cannot avoid a tall column and a connecting beam of a supporting truss during hoisting, and the steel structure truss positioned in the side section is excessively suspended outside one side close to the reserved channel, so that potential safety hazards exist, and the deviation of the gravity center is too large, so that the width of the reserved channel cannot meet the matching of the hoisting point of a crane and the gravity center of the steel structure truss, therefore, the steel structure truss is assembled in an inclined mode, the safety can be ensured, the arrangement width of the reserved channel can be reduced, and the construction period is further shortened;
s34, hoisting the steel truss: after the steel structure truss is assembled, the assembled steel structure truss is lifted up to rotate by a crane and is installed on a truss column foundation.
Preferably, in step S34, the middle steel truss is lifted and rotated by two cranes, and the side steel truss 3 is lifted and rotated by a single crane.
Preferably, four cranes are arranged in the embodiment, and two cranes are arranged in each reserved channel.
Further, in the step S3, the steel structure truss is firstly assembled and hoisted at the middle section, and then the steel structure trusses 3 at the north and south sides are assembled and hoisted; when the assembling and hoisting operation of the steel structure truss with a single section part is carried out, the assembling and hoisting operation is carried out in sequence from the middle to two sides.
As shown in fig. 5 and 6, further, in step S4, the beam joints 11 reserved in the main structure 1 are arranged three, which are respectively the lap joints located at the upper part, the mechanical joints located at the middle part and the mechanical joints located at the lower part, the beam reinforcements of the main structure of the reserved passage located at the upper part and the middle part are mutually overlapped and connected, and the lap positions are mutually staggered, the beam reinforcements located at the lower part are anchored on the column support, the convenience of connection and the accuracy of butt joint are ensured by adopting the lap joints and the mechanical joints, and due to construction errors in the construction process, the joints cannot be completely adopted by adopting the mechanical joints, so that two structures of the lap joints and the mechanical joints are adopted, and the construction progress is ensured.
Further, according to the first embodiment of the column connection joint 12 of the present invention, the column connection joint 12 is a mechanical joint, the height of which is 50mm lower than the top surface of the basic raft, and the top surface of the basic raft is covered with a 50mm thick sand cushion and a steel plate cushion.
Further, in the second embodiment of the column connecting joint 12 of the present invention, the column connecting joint 12 is a conversion joint, and includes a basic raft main rib and a conversion plate made of a steel plate material with a thickness of 30mm, the conversion plate is welded to the top end of the basic raft main rib and is flush with the top surface of the basic raft, so as to facilitate passing, and when the construction of the reserved passage main structure is performed, the column main rib is welded to the top surface of the conversion plate, so as to achieve connection of the main ribs.
Furthermore, the base plate is a steel plate with the thickness of 1mm, and the assembling frame is composed of a waffle slab.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Claims (8)
1. A forward and reverse combined construction method for a large-span roof building in a narrow place is characterized by comprising the following steps:
s1, raft construction: constructing basic raft plates on the ground;
s2, constructing a main structure: constructing the main structure (1) firstly, constructing to a truss column foundation, and reserving a channel between the main structure (1) which is constructed firstly;
s3, hoisting a steel structure: hoisting a steel structure by using the reserved channel, splicing the middle steel structure truss (2), hoisting after splicing and installing the middle steel structure truss (2), splicing and hoisting the side section steel structure truss (3), and finally connecting the steel structure trusses with each other to form a roof steel structure;
s4, closing a reserved channel: and after the hoisting of the steel roof structure is completed, the construction of the main structure of the reserved channel is carried out, and the main structure (1) is connected into a whole with the prior construction.
2. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 1, characterized in that: in the step S2, when the main body structure (1) is constructed, connecting joints are reserved at reserved channels of the main body structure, and the reserved connecting joints are divided into beam connecting joints (11) and column connecting joints (12) according to different structures.
3. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 1, characterized in that: in the step S2, the reserved width of the reserved channel is comprehensively determined according to the specification of the crane, the weight of the steel structure truss, the gravity center position and the lifting height.
4. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 1, characterized in that: in the step S3, the concrete operation steps of steel structure assembly are as follows:
s31, paving an assembling platform on a roof of the main structure (1) which is constructed firstly, wherein the assembling platform comprises a bottom base plate and an assembling frame, and the assembling frame is arranged on the bottom base plate;
s32, hoisting the steel structure assembling member to an assembling platform;
s33, assembling the steel structure truss on the assembling platform in an inclined mode;
and S34, after the steel structure truss is assembled, lifting the assembled steel structure truss to rotate by using a crane, and installing the assembled steel structure truss to a design position.
5. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 2, characterized in that: in the step S4, three beam connecting joints (11) reserved in the main construction structure (1) are firstly constructed, namely a lap joint positioned at the upper part, a mechanical connecting joint positioned at the middle part and a mechanical connecting joint positioned at the lower part, mutual lap joint is built in beam reinforcing steel bars of the main construction structure reserved in the upper part and the middle part, the lap joint positions are staggered, and the beam reinforcing steel bars positioned at the lower part are anchored on the column support.
6. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 2, characterized in that: the column connecting joints (12) are mechanical joints, the height of the mechanical joints is 50-80mm lower than the top surface of the basic raft, and the mechanical joints cover the cushion layer and the base plate.
7. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 2, characterized in that: the column connecting joint (12) is a conversion joint and comprises a basic raft board main rib and a conversion plate, the conversion plate is fixedly connected to the top end of the basic raft board main rib, and the column main rib of the reserved passage main body structure is fixedly connected to the top surface of the conversion plate.
8. The forward and backward combined construction method for the large-span roof building in the narrow place as claimed in claim 4, characterized in that: the bottom backing plate is a steel plate with the thickness of 1mm, and the assembling frame is composed of waffle plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692850.3A CN115853287A (en) | 2022-12-28 | 2022-12-28 | Forward and reverse combined construction method for large-span roof building in narrow site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211692850.3A CN115853287A (en) | 2022-12-28 | 2022-12-28 | Forward and reverse combined construction method for large-span roof building in narrow site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115853287A true CN115853287A (en) | 2023-03-28 |
Family
ID=85655323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211692850.3A Pending CN115853287A (en) | 2022-12-28 | 2022-12-28 | Forward and reverse combined construction method for large-span roof building in narrow site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115853287A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116657928A (en) * | 2023-07-25 | 2023-08-29 | 北京城建集团有限责任公司 | Layered assembly reverse operation construction method applied to stadium structure |
-
2022
- 2022-12-28 CN CN202211692850.3A patent/CN115853287A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116657928A (en) * | 2023-07-25 | 2023-08-29 | 北京城建集团有限责任公司 | Layered assembly reverse operation construction method applied to stadium structure |
| CN116657928B (en) * | 2023-07-25 | 2023-11-28 | 北京城建集团有限责任公司 | Layered assembly reverse operation construction method applied to stadium structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111945891B (en) | Ring truss high-altitude in-situ splicing construction method | |
| CN207633584U (en) | A kind of steel plate concrete combined shear wall that the double truss make-ups of reinforcing bar are put more energy into | |
| CN109139049B (en) | Construction method for secondary lining buckling arch of underground excavation station of subway | |
| CN113513041B (en) | Assembled multi-layer flat-top large-span pillar-free underground structure and open excavation construction method thereof | |
| CN106149868A (en) | Prefabricated buildings architectural structure system and assembly method thereof | |
| CN111424850A (en) | Prefabricated reinforced concrete shear wall and construction method | |
| CN207944590U (en) | A kind of assembled steel frame-prefabricated steel reinforced concrete shear wall structure system | |
| CN110670722A (en) | Implementation method of beam-column connecting node of fabricated building | |
| CN107905385A (en) | The assembled arthitecutral structure and method of construction that steel construction is combined with concrete structure | |
| CN115853287A (en) | Forward and reverse combined construction method for large-span roof building in narrow site | |
| CN210316185U (en) | Prefabricated shear wall, connected node | |
| CN215760673U (en) | Temporary supporting structure for shuttle-shaped column | |
| CN111270683A (en) | Long-span foundation pit soil layer temporary supporting system | |
| CN109424072A (en) | The connecting node and construction method of spacer bar concrete column on a kind of girder steel | |
| CN111101645A (en) | Self-in-place reinforced precast concrete wallboard, connecting structure and construction method | |
| KR100856723B1 (en) | System and method for underground downward construction using cantilever type steel frame | |
| CN111173030A (en) | Prefabricated sandwich side wall and prefabricated superposed bottom plate connecting node structure and construction method thereof | |
| CN115288504A (en) | Construction method of concrete floor on top of large-scale bin body structure | |
| CN214364235U (en) | Assembled steel sheet compound shear wall body structure | |
| CN212053436U (en) | Strenghthened type precast concrete wallboard and connection structure with from structure of taking one's place | |
| CN212176243U (en) | Cast-in-place roof does not need overhead layer structure of formwork | |
| CN210066816U (en) | Assembled vault is striden no post underground structure greatly | |
| CN112726942A (en) | Concrete prefabricated shear wall structure with sandwich steel plates and construction method | |
| CN207998964U (en) | The assembled floorslab with bars of reserved anchor hole and horse tooth trough overlap edge construction | |
| CN216108617U (en) | Structure system of prefabricated reinforced concrete beam of underground station |
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 |