CN213867836U - Temporary horizontal support changing structure of floor slab in vertical large-span vacancy - Google Patents
Temporary horizontal support changing structure of floor slab in vertical large-span vacancy Download PDFInfo
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- CN213867836U CN213867836U CN202022180373.5U CN202022180373U CN213867836U CN 213867836 U CN213867836 U CN 213867836U CN 202022180373 U CN202022180373 U CN 202022180373U CN 213867836 U CN213867836 U CN 213867836U
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Abstract
The utility model provides a bracing structure is traded to interim level of floor in vertical large-span vacancy for what the required headroom of the local main equipment of basement lacked the higher position floor of disappearance trades and props, is used for transmitting envelope horizontal force, guarantees envelope's safety. This interim level is traded and is propped structure all adopts the steel construction, can directly cut off in basement structure is inside, demolish the convenience, and the process is simple, saves construction period to steel can used repeatedly, and economic nature is good. The utility model has the advantages that: the construction process can be greatly simplified, the construction period is shortened, the construction cost is reduced, and the method is a green construction process.
Description
Technical Field
The utility model relates to a foundation ditch engineering field especially relates to a bracing structure is traded to interim level of floor in vertical large-span vacancy.
Background
Due to the requirement of environmental protection, a large deep foundation pit usually adopts a supporting structure with an internal support. This kind of foundation pit supporting structure, often before demolising bearing structure, must establish in fertile groove scope and replace the stay member, utilize the major structure who has been under construction to tear open and trade the support, and still need to backfill the fertile groove in the later stage, when basement local structure needs to be regarded as the higher equipment room of headroom, will lead to when supporting demolishs, because this part major structure floor is discontinuous, can not resist the horizontal force that retaining structure transmitted, this just needs to set up interim level at major structure floor disappearance position and trades the stay structure, wait to trade temporarily to prop structure superstructure floor and pass the construction of power belt completion and reach design intensity after, just can dismantle lower part interim level and trade the stay structure. The utility model provides a what be so floor's interim level trades in the vacancy of vertical large-span and props structure, this interim level trades the braced system and can satisfy biography power requirement, can guarantee again to demolish the back and do not cause the influence to the major structure atress.
Disclosure of Invention
In order to solve the problem, the utility model provides a structure is propped to interim level of floor in vertical large-span vacancy trades, and this interim level trades to prop simple structure process, and the material is recoverable, conveniently tears open and props, and does not have the influence to basement major structure construction, transmits horizontal force safe and reliable, construction convenience, saves the time limit for a project. The temporary horizontal support changing structure comprises: the building comprises an enclosure structure, a horizontal supporting structure, a vertical supporting structure, a temporary horizontal support changing structure of a large-span vacant middle floor slab, a temporary vertical supporting structure, a structure reinforcing hidden beam and a basement structure;
the horizontal support structure penetrates through the basement structure, and the two ends of the horizontal support structure are connected to the enclosing structures on the two sides of the horizontal support structure;
the horizontal support structure comprises a crown beam, a waist beam, a first support and a second support;
the vertical support structure comprises lattice columns and upright columns;
the temporary horizontal supporting structure comprises a double-spliced steel pipe, a prestress loose end and a fixed end; the fixed end comprises an end steel plate and a first bracket; the prestress loose end comprises a second bracket, a jack and loose end iron plugs; the second bracket is connected with one end of the jack, the other end of the jack is inserted into the loose end iron plug, the loose end iron plug is inserted into one end of the double-spliced steel pipe, and the other end of the double-spliced steel pipe is connected with the first bracket through the end steel plate; the bracket comprises a first bracket and a second bracket;
the basement structure comprises a basement bottom plate, a high-clearance equipment layer floor slab, a non-motor vehicle garage floor slab and a basement top slab, wherein the basement bottom plate, the high-clearance equipment layer floor slab, the non-motor vehicle garage floor slab and the basement top slab are sequentially and horizontally connected with the enclosure structure from bottom to top;
the method comprises the following steps that an enclosure structure is vertically arranged, the top end of the enclosure structure is connected with a crown beam, the crown beam is connected with a first support which is horizontally arranged, the first support penetrates through a basement structure, a vertically arranged latticed column is installed at the bottom end of the first support, and the latticed column penetrates through the bottom end of the basement structure and is inserted into a vertical column pile;
the top end of the basement bottom plate is provided with a plurality of temporary vertical supporting structures, the top ends of the plurality of temporary vertical supporting structures are provided with horizontally arranged double-spliced steel pipes, and the double-spliced steel pipes are connected to the basement structure through a structure reinforcing hidden beam;
and arranging a second support below the high-headroom equipment floor slab, wherein the second support is connected with the enclosure structure through a waist beam.
Further, the enclosure structure is a cast-in-situ bored pile or an underground continuous wall.
Further, the horizontal center line of the crown beam is equal to the horizontal center line of the first support in height.
Furthermore, the upright post pile is located at the bottom end of the basement structure and is vertically arranged.
Further, high headroom equipment floor slab is located basement structure and is close to foundation ditch limit position department, and this high headroom equipment floor slab passes through the power transmission belt and connects in envelope.
Further, the non-motor vehicle garage floor is connected to the building envelope through the power transmission belt.
Further, the first support is located below the top plate of the basement.
Further, the temporary horizontal support changing structure further comprises plain concrete, and the backfilling plain concrete is filled in a backslot between the outer wall of the basement structure and the envelope structure.
Furthermore, one end of the double-spliced steel pipe is connected with the hidden beam through a prestress loose end connecting structure.
Further, the two-piece steel pipe other end passes through stiff end connection structure reinforcing hidden beam, the stiff end comprises end steel sheet and first bracket fixed connection.
The utility model provides a beneficial effect that technical scheme brought is: the support replacing problem of the large-span vacant floor slab is well solved, the horizontal force transmitted by the enclosure structure can be well resisted, the support can be disassembled in the main structure, the main structure is not damaged, and the safety of a supporting structure is guaranteed. The horizontal steel support material has light dead weight, can be recycled, is convenient to construct, saves construction period and cost, is flexible to arrange, and is a green and environment-friendly temporary horizontal support-changing structure which is safe, reliable and suitable for the current construction situation.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1 is a schematic plan view of a temporary horizontal support-changing structure of a floor slab in a vertical large-span vacancy in the embodiment of the invention;
fig. 2 is a schematic cross-sectional view of a temporary horizontal support-changing structure of a floor slab in a vertical large-span vacancy in the embodiment of the present invention;
fig. 3 is a schematic view of the structure of the prestressed loose end according to the embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
An embodiment of the utility model provides a bracing structure is traded to interim level of floor in vertical large-span vacancy.
Please refer to fig. 1-3, fig. 1 is a schematic plane view of the temporary level of the floor slab in the vertical large-span vacancy of the embodiment of the present invention, fig. 2 is a schematic section view of the temporary level of the floor slab in the vertical large-span vacancy of the embodiment of the present invention, fig. 3 is a schematic large-scale structural diagram of the prestressed loose end of the embodiment of the present invention, which specifically includes: the building enclosure comprises an enclosure structure 1, a horizontal supporting structure (a crown beam 2, a waist beam 3, a first support 4 and a second support 5), a vertical supporting structure (a lattice column 6 and a column pile 7), a temporary horizontal supporting structure (a double-spliced steel pipe 8, a prestress loose end (a second bracket 92, a jack 10, a loose end stopper 11 and a first bracket 91), a fixed end (a first bracket 91 and an end steel plate 12)), a structure reinforcing hidden beam 13, a backfill plain concrete 14, a force transmission belt 15, a temporary vertical supporting structure 16, a basement structure (a basement bottom plate 17, a high clearance equipment layer floor plate 18, a non-motor vehicle garage floor plate 19 and a basement top plate 20), a lattice column 6 is positioned at one end of the first support 4 far away from the crown beam 2, the top end of the crown beam 2 is as high as the top end of the first support 4, but in practical application, the lattice column 6 can be closer to the crown beam 2, the top end of the crown beam 2 only needs to be at the same height as the horizontal center line of the first support 4.
For floors in large-span gaps, horizontal supporting structure combined structures are used for reinforcing the hidden beams 13 to transfer horizontal force, and the gravity of the horizontal supporting structure is transferred to the basement bottom plate through the temporary vertical supporting structures 16. The large-span hollow floor slab means that due to functional requirements, the floor slab is discontinuous, the middle floor slab is partially lost, and an effective support replacing structure cannot be formed.
The temporary vertical support structure 16 is arranged along the whole length of the horizontal support and is used for enabling the basement bottom plate to be stressed evenly.
The envelope structure 1 and the basement structure outer wall backfill plain concrete continuously transmit the horizontal force of the envelope structure 1 to the temporary horizontal supporting structure, and the plain concrete needs to be backfilled and compacted.
The basement structure wraps the temporary horizontal supporting structure, after the construction of the upper structure floor slab and the force transmission belt 15 is completed and strength is achieved, the temporary horizontal supporting structure is dismantled in the basement structure, and the stress of the main structure is not affected.
The main supports are connected by connecting rods, and the connecting rods are welded with the steel lattice stand columns.
The temporary horizontal supporting structure can adopt steel pipes, section steel or channel steel and other steel materials, and can adopt single or double splicing in form.
The structure reinforcing hidden beam is of a reinforced concrete structure, is embedded into the outer wall of the basement and is integrated with the outer wall of the basement.
The plain concrete force transmission belt is a carrier which is filled between the outer wall of the basement and the building envelope and transmits horizontal force, and the material can be plain concrete with strength grades of C15, C20 and the like.
The temporary vertical support structure 16 is a vertical steel structure that runs along the entire length of the support, transferring the horizontal support structure weight through the vertical support structure to the basement floor.
The interim level is traded and is propped structure level to adopting steel construction and basement major structure to pass through the structure reinforcing hidden beam to be connected, transmits horizontal power, and vertical supports gravity transmission for the basement bottom plate with the level through setting up vertical steel construction.
The utility model discloses an implement the step and be: the method comprises the steps of excavating a foundation pit to the bottom, constructing a basement outer wall, a structure reinforcing hidden beam 13 and a bracket 9 below a second support 5 of a floor slab in a large-span gap after the construction of the basement foundation and a bottom plate of the basement foundation is completed, backfilling a return groove between an enclosure structure 1 and the constructed basement outer wall by adopting plain concrete 14, constructing a temporary vertical supporting structure 16, erecting a double-spliced steel pipe 8, removing the second support 5, continuously constructing the basement structure outer wall, constructing a high-clearance equipment layer floor slab 18 and a force transfer belt 15, continuously constructing the basement outer wall to a non-motor vehicle garage floor slab 19, constructing the non-motor vehicle garage floor slab 19 and the force transfer belt 15, removing a first support 4, and removing a temporary horizontal support changing structure in the basement structure after the construction of the basement structure is completed and the return groove between the basement outer wall and the support is backfilled.
The utility model has the advantages that:
(1) the horizontal force transmitted by the building envelope can be safely and reliably resisted: the horizontal prestressing force of adding water is passed through at one end to the double-pin steel pipe support, can improve the ability of steel pipe transmission horizontal force greatly to horizontal steel pipe supports both ends and adopts structure reinforcing hidden beam and basement outer wall to be connected with basement outer wall structure, can transmit partial horizontal force for basement structure, and then ensures supporting construction's safety.
(2) Save the time limit for a project, reduce engineering cost: because the steel supporting structure is adopted, the maintenance time required by concrete support is reduced, and steel can be recycled, so that the construction cost is reduced.
(3) The adaptability is strong: the temporary horizontal support-changing system can be cut and recovered in the basement structure after the basement structure is out of the ground, and the stress of the main structure is not affected by support dismantling.
(4) Construction is convenient: the steel construction can be demolishd according to basement major structure construction demand, and interim level is traded and is propped structure atress relatively independent, and demolishs the convenience, and the material dead weight is lighter, the construction of being convenient for.
(5) The comprehensive economic benefit is high: the method has the advantages of powerful environmental protection, simple process, high component standardization degree, construction period saving, material reutilization, green environmental protection requirement meeting and high comprehensive economic benefit.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a structure is propped to interim level of floor in vertical large-span vacancy, its characterized in that: the method comprises the following steps: the building enclosure comprises an enclosure structure (1), a horizontal supporting structure, a vertical supporting structure, a temporary horizontal supporting structure, a structure reinforcing hidden beam (13), a force transmission belt (15), a temporary vertical supporting structure (16) and a basement structure;
the horizontal support structure penetrates through the basement structure, and the two ends of the horizontal support structure are connected to the enclosing structures (1) positioned on the two sides of the horizontal support structure;
the horizontal support structure comprises a crown beam (2), a waist beam (3), a first support (4) and a second support (5);
the vertical supporting structure comprises lattice columns (6) and upright columns (7);
the temporary horizontal supporting structure comprises a double-spliced steel pipe (8), a prestress loose end and a fixed end; the fixed end comprises an end steel plate (12) and a first bracket (91); the prestress loose end comprises a second bracket (92), a jack (10) and a loose end stopper (11); the second bracket (92) is connected with one end of a jack (10), the other end of the jack (10) is inserted into a loose end iron plug (11), the loose end iron plug (11) is inserted into one end of the double-spliced steel pipe (8), and the other end of the double-spliced steel pipe (8) is connected with the first bracket (91) through an end steel plate (12); the corbels (9) comprise a first corbel (91) and a second corbel (92);
the basement structure comprises a basement bottom plate (17), a high-clearance equipment layer floor (18), a non-motor vehicle garage floor (19) and a basement top plate (20), wherein the basement bottom plate (17), the high-clearance equipment layer floor (18), the non-motor vehicle garage floor (19) and the basement top plate (20) are sequentially and horizontally connected to the enclosure structure (1) from bottom to top;
the building structure is characterized in that a building structure (1) is vertically arranged, the top end of the building structure (1) is connected with a top beam (2), the top beam (2) is connected with a first support (4) which is horizontally arranged, the first support (4) penetrates through the basement structure, a vertically arranged latticed column (6) is installed at the bottom end of the first support (4), and the latticed column (6) penetrates through the bottom end of the basement structure and is inserted into a vertical column pile (7);
the top end of a basement bottom plate (17) is provided with a plurality of temporary vertical supporting structures (16), double-spliced steel pipes (8) which are horizontally arranged are installed at the top ends of the plurality of temporary vertical supporting structures (16), and the double-spliced steel pipes (8) are connected to the basement structure through a structure-reinforced hidden beam (13);
and a second support (5) is arranged below the high-headroom equipment floor (18), and the second support (5) is connected to the building envelope (1) through a waist beam (3).
2. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the enclosure structure is a cast-in-situ bored pile or an underground continuous wall.
3. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the horizontal center line of the crown beam (2) is equal to the horizontal center line of the first support (4) in height.
4. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the upright post pile (7) is positioned at the bottom end of the basement structure and is vertically arranged.
5. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: high headroom equipment layer floor (18) are located basement structure and are close to foundation ditch limit position department, and this high headroom equipment layer floor (18) are connected in envelope (1) through passing power area (15).
6. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the non-motor vehicle garage floor (19) is connected to the enclosure structure (1) through a force transmission belt (15).
7. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the first support (4) is positioned below the top plate (20) of the basement.
8. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the temporary horizontal support changing structure further comprises a backfill plain concrete (14), and the backfill plain concrete (14) is filled in a back groove between the outer wall of the basement structure and the envelope structure (1).
9. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: one end of the double-spliced steel pipe (8) is connected with the reinforcing hidden beam (13) through the prestress loose end.
10. The temporary horizontal bracing structure for the floor slab in the vertical large-span vacancy as claimed in claim 1, wherein: the other end of the double-spliced steel pipe (8) is provided with a hidden beam (13) through a fixed end connecting structure, and the fixed end is formed by an end steel plate (12) and a first bracket (91) in a fixed connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180373.5U CN213867836U (en) | 2020-09-29 | 2020-09-29 | Temporary horizontal support changing structure of floor slab in vertical large-span vacancy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022180373.5U CN213867836U (en) | 2020-09-29 | 2020-09-29 | Temporary horizontal support changing structure of floor slab in vertical large-span vacancy |
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| Publication Number | Publication Date |
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| CN213867836U true CN213867836U (en) | 2021-08-03 |
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| CN202022180373.5U Active CN213867836U (en) | 2020-09-29 | 2020-09-29 | Temporary horizontal support changing structure of floor slab in vertical large-span vacancy |
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| CN (1) | CN213867836U (en) |
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