CN117569379A - Hanging die structure of pit in foundation pit and construction method thereof - Google Patents
Hanging die structure of pit in foundation pit and construction method thereof Download PDFInfo
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- CN117569379A CN117569379A CN202311152953.5A CN202311152953A CN117569379A CN 117569379 A CN117569379 A CN 117569379A CN 202311152953 A CN202311152953 A CN 202311152953A CN 117569379 A CN117569379 A CN 117569379A
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- 238000010276 construction Methods 0.000 title abstract description 13
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000007667 floating Methods 0.000 abstract description 6
- 230000000670 limiting effect Effects 0.000 description 3
- 238000009435 building construction Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Abstract
The invention discloses a hanging die structure of a pit in a foundation pit and a construction method thereof, comprising the following steps: the mold cylinder with the bottom and without the cover is arranged in a pit in the foundation pit and is provided with a first side face and a second side face which are opposite to each other, a third side face and a fourth side face are formed between the opposite sides of the first side face and the second side face, and the first side face, the second side face, the third side face and the fourth side face are respectively provided with a perforation; an inner support frame which is supported on the inner side surface of the mold cylinder; a plurality of supporting ribs are arranged along the circumferential direction of the pit mouth of the pit in the pit, one end of each supporting rib is fixedly connected with a reinforcing steel bar structure of the bottom plate of the foundation pit, and the other end of each supporting rib is detachably penetrated in the through hole; the drawknot structure is arranged in the upper port of the mold cylinder and comprises a plurality of connecting ribs which are arranged in a crossing way, and two ends of the connecting ribs are detachably connected between the other ends of the supporting ribs on two opposite sides of the mold cylinder through connecting sleeves. The invention solves the problem of complicated construction in the floating control measure of the lifting mould of the water collecting well and the elevator well.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a lifting die structure of a pit in a foundation pit and a construction method thereof.
Background
Today, where building construction technology is increasingly developed, urban construction is gradually developed toward underground spaces. The construction of super high-rise building structure must need the high and large bottom plate foundation to support, but simultaneously because of the bottom plate degree of depth is darker, the lifting mould reinforcement construction degree of difficulty of its sump pit, elevator well also is self-evident. In the bottom plate concrete placement process, the phenomenon that the lift shaft and the water collecting shaft lift mould float up often occurs, so that the heights of the water collecting shaft and the bottom pit of the lift shaft are higher.
In order to control the lifting of the lift shaft and the water collecting shaft lifting mould, the existing technical measures are generally to fix the lift shaft and the water collecting shaft lifting mould after the installation and inspection of the lift shaft and the water collecting shaft lifting mould are correct. Four sides of the hanging die are respectively welded firmly with reinforcing steel bars outside the pit wall by adopting water stop screws, so that the formwork is prevented from floating during concrete pouring, and the top surface of the hanging die is prevented from floating by adopting a pressing block counterweight. The pressing blocks select hanging basket objects and the like to ensure that the bottom surface is placed smoothly and stably, and the hanging basket objects are fixed after being placed to prevent overturning.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the invention provides a lifting mould structure of a pit in a foundation pit and a construction method thereof, so as to solve the problem of complicated construction of lifting control measures of lifting moulds of a water collecting well and an elevator well.
To achieve the above object, there is provided a suspended mould structure of a pit in a foundation pit, comprising:
the mould cylinder with the bottom and without the cover is arranged in a pit in a foundation pit, the mould cylinder is provided with a first side face and a second side face which are opposite, a third side face and a fourth side face are formed between the opposite sides of the first side face and the second side face, and the first side face, the second side face, the third side face and the fourth side face are respectively provided with a perforation;
an inner support frame which is supported on the inner side surface of the mold cylinder;
the support bars are arranged along the circumferential direction of the pit mouth of the pit, one end of each support bar is fixedly connected with a reinforcing steel bar structure of the bottom plate of the foundation pit, and the other end of each support bar is detachably penetrated in the corresponding through hole;
the drawknot structure is arranged in the upper port of the die cylinder and comprises a plurality of connecting ribs which are arranged in a crossing manner, and two ends of each connecting rib are detachably connected between the other ends of the supporting ribs on two opposite sides of the die cylinder through connecting sleeves.
Further, each side of the mold cylinder is provided with at least two supporting ribs.
Further, the steel bar structure comprises a plurality of transverse bars and longitudinal bars, the transverse bars are arranged along the length direction of the pit in the pit, the longitudinal bars are arranged along the width direction of the pit in the pit, the transverse bars and the longitudinal bars are bound together, and one end of the supporting bar is fixedly connected with a plurality of transverse bars or a plurality of longitudinal bars at the pit mouth of the pit in the pit.
Further, a plurality of supporting ribs on each side of the mold cylinder are arranged at equal intervals.
Further, the mold cylinder includes:
a bottom die arranged above the pit bottom of the pit;
the side die is vertically arranged on the bottom die, and a circle of side die is arranged along the outer edge of the bottom die.
Further, the inner bracket:
the horizontal support comprises a support tube and a supporting piece, wherein the support tube is arranged between side dies on two opposite sides of the die cylinder, the supporting piece is adjustably arranged at two ends of the support tube, and the supporting piece is pressed against the inner side of the side dies;
and the vertical rod is vertically arranged on the bottom die and connected with the supporting tube.
Further, an internal thread is formed at the end of the support tube, an external thread is formed at one end of the supporting piece, one end of the supporting piece is connected with the end of the support tube in a threaded mode, and the other end of the supporting piece is pressed against the inner side of the side die.
The invention provides a construction method of a lifting die structure of a pit in a foundation pit, which comprises the following steps:
arranging a plurality of supporting ribs along the circumferential direction of a pit mouth of a pit in a foundation pit, and fixedly connecting one end of each supporting rib to a reinforcing steel bar structure of a bottom plate of the foundation pit so that the other end of each supporting rib extends into the pit;
arranging a mould cylinder in a pit in a foundation pit, wherein the other end of the supporting rib is detachably penetrated into a perforation of the mould cylinder;
an inner supporting frame is arranged in the mold cylinder and is supported on the inner side surface of the mold cylinder;
the drawknot structure is arranged in the upper port of the die cylinder, so that two ends of the connecting rib of the drawknot structure are detachably connected between the other ends of the supporting ribs on two opposite sides of the die cylinder respectively through connecting sleeves.
The lifting die structure of the pit in the foundation pit has the beneficial effects that the lifting die structure of the pit in the foundation pit adopts the reinforced bar structure of the bottom plate of the foundation pit connected by the supporting bars, and the lifting die structure is connected by the drawknot structure in a opposite-pulling manner so as to avoid the upper part of the template of the pit in the foundation pit, on one hand, the lifting die template of the pit in the pit and the like can be effectively prevented from further floating, meanwhile, the risk of dumping of the hanging basket counterweight and sinking of the template in the traditional measure is reduced, and the drawknot structure connected by the drawknot structure can be recycled.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural view of a suspended mould structure of a pit in a foundation pit according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a mold cylinder according to an embodiment of the present invention.
Fig. 3 to 4 are schematic views showing steps of a construction method of a suspended mould structure of a pit in a foundation pit according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, the present invention provides a suspended mould structure of a pit in a foundation pit, comprising: the die cylinder 1, the inner supporting frame 2, the supporting ribs 3 and the drawknot structure 4.
Wherein the mold cylinder 1 has a cylindrical structure with a bottom and no cover. The mold cylinder 1 is arranged in a pit A in the foundation pit. And a pouring space for pouring the bottom plate structure of the pit in the pit is formed between the mould cylinder and the pit in the pit.
In this embodiment, the pit-in-pit is a one-direction pit. The mold cylinder 1 has opposite first and second sides. A third side and a fourth side are formed between opposite sides of the first side and the second side. The first side surface and the second side surface are opposite sides of the mold cylinder in the width direction of the mold cylinder. The third side and the fourth side are opposite sides of the mold cylinder in the length direction of the mold cylinder. The first side surface, the second side surface, the third side surface and the fourth side surface are respectively provided with perforations.
The inner bracket 2 is supported on the inner side surface of the die cylinder 1.
Referring to fig. 2, the mold 1 includes: a bottom die 11 and a side die 12.
The bottom mold 11 is disposed above the pit bottom of the pit a. The side mold 12 is vertically arranged on the bottom mold 11. The side mold 12 is provided with a turn along the outer edge of the bottom mold 11.
With continued reference to fig. 2, the inner bracket 2 horizontally supports and supports the pole 22. Wherein the number of the horizontal supports is a plurality of. Part of the horizontal support is arranged along the length direction of the mold cylinder, and the other part of the horizontal support is arranged along the width direction of the mold cylinder.
Specifically, each horizontal support includes a support tube 211 and a prop 212. Support tubes 211 are provided between the side dies 12 on opposite sides of the die cylinder 1. The support members 212 are positionally adjustably mounted at both ends of the support tube 211. The abutment 212 presses against the inside of the side form 12. The upright pole 22 is vertically arranged on the bottom die 11. The upright 22 is connected to a support tube 211.
In this embodiment, the uprights are connected to the intersections of two horizontally supported support tubes arranged crosswise.
As a preferred embodiment, the end of the support tube 211 is formed with an internal thread. An external thread is formed at one end of the prop 212. One end of the prop 212 is screw-coupled to an end of the support tube 211. The other end of the abutment 212 presses against the inside of the side form 12.
With continued reference to fig. 1, a plurality of support ribs 3 are provided along the circumferential direction of the mouth of the pit a in the pit. One end of the supporting rib 3 is fixedly connected with a reinforcing steel bar structure 5 of the bottom plate of the foundation pit. The other end of the supporting rib 3 is detachably penetrated in the perforation.
In this embodiment, the rebar structure 5 includes a plurality of transverse bars 51 and longitudinal bars 52. The lateral rib 51 is provided along the length direction of the pit a in the pit. The longitudinal ribs 52 are provided along the width direction of the pit a in the pit. The transverse ribs 51 are bound with the longitudinal ribs 52. One end of the supporting rib 3 is fixedly connected with a plurality of transverse ribs 51 or a plurality of longitudinal ribs 52 at the pit mouth of the pit A in the pit.
At least two support ribs 3 are provided on each side of the mould cylinder 1. The multiple support ribs 3 on each side of the mold cylinder 1 are arranged at equal intervals. Specifically, the supporting ribs are provided at equal portions on each side of the mold cylinder, as shown in fig. 1, at three equal portions on each side of the mold cylinder, i.e., 1/3 and 2/3 of the side molds of the mold cylinder are provided with a supporting rib, respectively.
The drawknot structure 4 is arranged in the upper port of the mould cylinder 1. Specifically, the drawknot structure 4 includes a plurality of tie bars 41 disposed crosswise. The both ends of the coupling rib 41 are detachably coupled between the other ends of the support ribs 3 at the opposite sides of the mold cylinder 1 through coupling sleeves.
The invention provides a construction method of a lifting die structure of a pit in a foundation pit, which comprises the following steps:
s1: the plurality of supporting ribs 3 are arranged along the circumferential direction of the pit mouth of the pit A in the pit in the foundation pit, and one end of each supporting rib 3 is fixedly connected with a reinforcing steel bar structure 5 of the bottom plate of the foundation pit, so that the other end of each supporting rib 3 extends into the pit A.
In this embodiment, the pit-in-pit is an elevator pit, a pit, or the like of the foundation pit. The support bars on each side of the pit mouth of the pit are perpendicular to the direction of the side edges of the pit. In the trisection position of the pit edge in the pit, a supporting rib is required to be reserved for 10 centimeters beyond the pit side template (namely the side template of the template cylinder) in the pit. The support rib is subjected to at least three spot welds in the binding range, and the normal straight thread wire is reserved on one side of the support rib and the straight thread positive and negative wire is reserved on the other side of the support rib at the trisection position of the pit.
S2: the mould cylinder 1 is arranged in a pit A in the foundation pit, and the other end of the supporting rib 3 is detachably penetrated in a perforation of the mould cylinder 1.
And assembling the barrel mould, and arranging perforations on the side mould of the barrel mould for inserting the supporting ribs.
S3: an inner support 2 is installed in the mold cylinder 1, and the inner support 2 is supported on the inner side surface of the mold cylinder 1.
S4: the drawknot structure 4 is arranged in the upper port of the mold cylinder 1, so that two ends of the connecting ribs 41 of the drawknot structure 4 are respectively detachably connected between the other ends of the supporting ribs 3 on two opposite sides of the mold cylinder 1 through connecting sleeves.
After the die cylinder is reinforced, the steel bars of the reserved wire heads on the supporting ribs on the opposite sides of the pit in the pit are connected by using connecting sleeves (such as a common straight thread sleeve and a positive and negative thread straight thread sleeve) in a drawknot manner.
In the pit bottom concrete pouring process, the mold cylinder is pressed below the pit bottom plate in the pit due to the downward pressing limiting effect of the supporting ribs and the drawknot structure, the mold cylinder of the pit in the pit is prevented from floating upwards, the drawknot structure is detached after pouring is finished, and the part of the supporting ribs extending into the mold cylinder is cut off.
According to the lifting die structure for the pit in the foundation pit, the supporting ribs are connected with the steel bar structure of the bottom plate of the foundation pit, and the drawknot structure is utilized for opposite-pulling connection, so that the situation that the upper part of a template of the pit in the foundation pit is avoided, on one hand, the lifting die template in the pit and the like can be effectively prevented from further floating, meanwhile, the risk of dumping of a hanging basket counterweight and sinking of the template in the traditional measure is reduced, and the drawknot structure for drawknot connection can be recycled.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (8)
1. A suspended mould structure of a pit in a foundation pit, comprising:
the mould cylinder with the bottom and without the cover is arranged in a pit in a foundation pit, the mould cylinder is provided with a first side face and a second side face which are opposite, a third side face and a fourth side face are formed between the opposite sides of the first side face and the second side face, and the first side face, the second side face, the third side face and the fourth side face are respectively provided with a perforation;
an inner support frame which is supported on the inner side surface of the mold cylinder;
the support bars are arranged along the circumferential direction of the pit mouth of the pit, one end of each support bar is fixedly connected with a reinforcing steel bar structure of the bottom plate of the foundation pit, and the other end of each support bar is detachably penetrated in the corresponding through hole;
the drawknot structure is arranged in the upper port of the die cylinder and comprises a plurality of connecting ribs which are arranged in a crossing manner, and two ends of each connecting rib are detachably connected between the other ends of the supporting ribs on two opposite sides of the die cylinder through connecting sleeves.
2. A pit-in-pit lifting mould structure in a foundation pit according to claim 1, wherein at least two of the support bars are provided on each side of the mould cylinder.
3. The lifting die structure of a pit in a foundation pit according to claim 2, wherein the steel bar structure comprises a plurality of transverse bars and longitudinal bars, the transverse bars are arranged along the length direction of the pit in the pit, the longitudinal bars are arranged along the width direction of the pit in the pit, the transverse bars and the longitudinal bars are bound together, and one end of the supporting bar is fixedly connected with a plurality of transverse bars or a plurality of longitudinal bars at the pit mouth of the pit in the pit.
4. The pit-in-pit lifting die structure in a foundation pit according to claim 2, wherein a plurality of the support ribs on each side of the die cylinder are arranged at equal intervals.
5. The pit-in-pit lifting die structure in a foundation pit according to claim 1, wherein the die cylinder comprises:
a bottom die arranged above the pit bottom of the pit;
the side die is vertically arranged on the bottom die, and a circle of side die is arranged along the outer edge of the bottom die.
6. The pit-in-pit lifting structure in a foundation pit of claim 5, wherein the inner strut:
the horizontal support comprises a support tube and a supporting piece, wherein the support tube is arranged between side dies on two opposite sides of the die cylinder, the supporting piece is adjustably arranged at two ends of the support tube, and the supporting piece is pressed against the inner side of the side dies;
and the vertical rod is vertically arranged on the bottom die and connected with the supporting tube.
7. The lifting die structure of the pit in the foundation pit according to claim 6, wherein the end portion of the supporting pipe is formed with an internal thread, one end of the supporting piece is formed with an external thread, one end of the supporting piece is connected to the end portion of the supporting pipe in a threaded manner, and the other end of the supporting piece is pressed against the inner side of the side die.
8. A method of constructing a pit-in-pit suspension mould structure in a foundation pit according to any one of claims 1 to 7, comprising the steps of:
arranging a plurality of supporting ribs along the circumferential direction of a pit mouth of a pit in a foundation pit, and fixedly connecting one end of each supporting rib to a reinforcing steel bar structure of a bottom plate of the foundation pit so that the other end of each supporting rib extends into the pit;
arranging a mould cylinder in a pit in a foundation pit, wherein the other end of the supporting rib is detachably penetrated into a perforation of the mould cylinder;
an inner supporting frame is arranged in the mold cylinder and is supported on the inner side surface of the mold cylinder;
the drawknot structure is arranged in the upper port of the die cylinder, so that two ends of the connecting rib of the drawknot structure are detachably connected between the other ends of the supporting ribs on two opposite sides of the die cylinder respectively through connecting sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311152953.5A CN117569379A (en) | 2023-09-07 | 2023-09-07 | Hanging die structure of pit in foundation pit and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311152953.5A CN117569379A (en) | 2023-09-07 | 2023-09-07 | Hanging die structure of pit in foundation pit and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117569379A true CN117569379A (en) | 2024-02-20 |
Family
ID=89892390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311152953.5A Pending CN117569379A (en) | 2023-09-07 | 2023-09-07 | Hanging die structure of pit in foundation pit and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117569379A (en) |
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2023
- 2023-09-07 CN CN202311152953.5A patent/CN117569379A/en active Pending
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