CN115341553A

CN115341553A - Foundation pit crown beam pouring template and crown beam construction method

Info

Publication number: CN115341553A
Application number: CN202211037889.1A
Authority: CN
Inventors: 邝应祥; 冼学威; 钟毅; 简洛文; 林碧英; 罗泽伟; 吴国献
Original assignee: Foshan Xinyi Construction Group Co ltd
Current assignee: Foshan Xinyi Construction Group Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-11-15
Anticipated expiration: 2042-08-26
Also published as: CN115341553B

Abstract

The invention discloses a foundation pit crown beam pouring template and a crown beam construction method, wherein the pouring template comprises a supporting template mechanism and a plurality of supporting and fixing mechanisms which are vertically arranged oppositely; the supporting template mechanism comprises a plurality of templates A and a plurality of templates B; the template A is connected with the template B through a hinge structure; the hinge structure comprises a hinge shaft arranged at the end part of the template A and an arc-shaped sleeve arranged on the template B, and the hinge shaft is rotationally connected with the inner wall of the arc-shaped sleeve; and an arc-shaped connecting piece is arranged between the hinge shaft and the template A. This pour template is convenient for install also convenient to detach, and reuse rate is high, and template overall structure is very stable moreover, and non-deformable, and the connection precision between template and the template is high, can the angle between accurate adjustment template and the template, is applicable to the crown beam construction of various angles, and the leakproofness is strong between template and the template, connects closely, has reduced the waste of concrete.

Description

Foundation pit crown beam pouring template and crown beam construction method

Technical Field

The invention relates to the technical field of crown beams, in particular to a foundation pit crown beam pouring template and a crown beam construction method.

Background

The crown beam is also called a capping beam and a cap beam, and is a beam supported by reinforced concrete or a small amount of concrete arranged at the top of the bent frame pile pier for supporting, distributing and transmitting the load of an upper structure. The crown beam mainly has two functions: the first is to connect all the pile foundations together, such as cast-in-place bored piles, rotary digging piles and the like, to prevent collapse of the top edge of the foundation pit or the vertical shaft, and the second is to bear the horizontal extrusion force and the vertical shearing force of the steel support or the reinforced concrete support.

The construction process of the crown beam mainly comprises the following steps: excavating earthwork and erecting pile foundation → binding crown beam reinforcing steel → erecting formwork (crown beam formwork) → concrete pouring → form removal and maintenance. The vertical formwork is a formwork arranged on two sides of the steel bar of the crown beam to support the crown beam so as to pour concrete. In the prior art, the vertical formwork is usually built by adopting a wood formwork, and the wood formwork is adopted to have the following defects:

1. plank sheathing is fixed through the iron nail when the installation, with a plank sheathing, also need the dismantlement in proper order with a plank sheathing during the dismantlement, and the flow is complicated, wastes time and energy to whole installation dismantlement, and precision and efficiency are lower, and reuse rate is low moreover.

2. During pouring, the concrete can also expand to deform the wooden template, so that the poured crown beam structure is unstable.

3. The side of the wooden template is easy to be uneven, so that a gap at the joint between the wooden template and the wooden template is large, the sealing performance in the process of erecting the template cannot be guaranteed, and when concrete is poured, the concrete can leak out from the gap, so that the concrete is wasted.

4. For some crown beams with the direction of not 90 degrees, the existing wood template is difficult to adjust the direction, so that the template is very difficult to erect and the precision is very low.

Disclosure of Invention

The invention aims to overcome the existing problems and provides a foundation pit crown beam pouring template which is convenient to mount and dismount, high in repeated utilization rate, stable in overall structure, not prone to deformation, high in connection precision between the template and the template, capable of accurately adjusting the angle between the template and the template, suitable for crown beam construction at various angles, strong in sealing performance between the template and the template, tight in connection and capable of reducing concrete waste.

Another object of the present invention is to provide a method for constructing a crown beam.

The purpose of the invention is realized by the following technical scheme:

a foundation pit crown beam pouring template comprises supporting template mechanisms which are vertically and oppositely arranged on two sides of a foundation pit and a plurality of supporting and fixing mechanisms which are arranged between the two supporting template mechanisms and used for supporting and fixing the two supporting template mechanisms; wherein the content of the first and second substances,

the supporting template mechanism comprises a plurality of templates A and a plurality of templates B; the template A and the template B are sequentially arranged at intervals, and the template A and the template B are connected through a hinge structure; the hinge structure comprises a hinge shaft arranged at the end part of the template A and an arc-shaped sleeve arranged on the template B, and the hinge shaft is rotationally connected with the inner wall of the arc-shaped sleeve; an arc-shaped connecting piece is arranged between the hinged shaft and the template A; one end of the arc-shaped connecting piece is fixedly connected to the end part of the template A, and the other end of the arc-shaped connecting piece is fixedly connected to one side of the hinge shaft far away from the end part of the template A; the axis of the arc-shaped connecting piece is superposed with the axis of the hinge shaft.

The working principle of the foundation pit crown beam pouring template is as follows:

during the formwork erection, with the articulated shaft vertical insert arc cover in, can realize articulating between A template and the B template to realize A template and B template high-speed joint, arrange the back with the template mechanism of strutting of foundation ditch both sides, then carry out the fixed stay with the A template of both sides, the B template of both sides through supporting fixed establishment, prevent when concreting, prevent that A template and B template from taking place to shift. Because the template A is hinged with the template B, the angle between the template A and the template B can be flexibly adjusted, thereby being suitable for the construction of the crown beam with various angles.

In a preferred embodiment of the present invention, a space between the hinge shaft and the arc-shaped connecting member is an arc-shaped groove, when the template a is hinged to the template B, the arc-shaped sleeve is located in the arc-shaped groove, and the thickness of the arc-shaped groove is greater than or equal to the thickness of the arc-shaped sleeve. By adopting the structure, when the hinge joint is carried out, the arc-shaped groove is encircled on the hinge shaft, the arc-shaped connecting piece is encircled on the arc-shaped sleeve, the hinge joint is more stable, the A template and the B template are more tightly hinged, the sealing performance is improved, and the concrete leakage is prevented.

Preferably, a fixed shaft is arranged at the upper end of the hinged shaft, and the hinged shaft and the fixed shaft are coaxially arranged; the upper end of each hinged structure is provided with a clasping mechanism for preventing the template A and the template B from rotating relatively, and each clasping mechanism comprises a shell arranged at the upper end of the arc-shaped sleeve and a clasping assembly arranged between the shell and the fixed shaft and used for clasping the fixed shaft; the clasping assemblies respectively comprise a plurality of elastic self-locking assemblies, and the elastic self-locking assemblies are uniformly distributed along the circumferential direction; each elastic self-locking assembly comprises a locking block and a locking spring; one end of the locking block is hinged to the shell; one end of the locking spring acts on the shell, and the other end of the locking spring acts on the middle part of the locking block; the elastic force of the locking spring enables the other end of the locking block to be obliquely and tightly propped against the fixed shaft. In the structure, after the template A is hinged to the template B, the clasping mechanism is installed, the other end of the locking block is obliquely abutted to the fixed shaft due to the elastic force of the locking spring, so that the distance between the outer surface of the fixed shaft and the hinged position of the locking block is smaller than the length of the locking block, the locking block cannot cross the fixed shaft in one direction, when the template A or the template B is rotated forcibly, the fixed shaft and the shell both have a movement trend, the shell can drive the locking block to swing, however, the distance between the outer surface of the fixed shaft and the hinged position of the locking block is smaller than the length of the locking block, in the direction, the locking block cannot cross the fixed shaft, the clasping mechanism is clasped, the template A and the template B are prevented from offsetting after being arranged, and the connection precision between the template and the template is improved.

Furthermore, the number of the clamping assemblies is two, and the two clamping assemblies are distributed up and down; wherein, the inclination directions of the locking blocks in the two clasping assemblies are opposite. Through setting up above-mentioned structure, can realize A template and B template and take place to hold tightly in two directions, realized A template and B template anticlockwise and clockwise pivoted hold tightly, played complete spacing effect.

Preferably, a partition board is arranged in the middle of the shell, the partition board divides the inner space of the shell into an upper cavity and a lower cavity, and the two clasping assemblies are respectively positioned in the upper cavity and the lower cavity; the locking block is hinged to the partition plate; a baffle plate is arranged on the baffle plate, and a guide post is arranged on the baffle plate; the locking spring is sleeved on the guide post, and one end of the locking spring acts on the stop block. Through setting up above-mentioned structure, be convenient for to the installation of embracing the subassembly tightly for the structure becomes compacter, and the guide post can make locking spring effect direction remain stable, has played installation and guide effect.

Preferably, the supporting and fixing mechanism comprises a cross beam and 7-shaped fixing rods which are oppositely arranged at two ends of the cross beam; wherein the 7-type fixing rod comprises a horizontal part and a vertical part; the end part of the horizontal part is hinged to the end part of the cross beam, the joint of the horizontal part and the vertical part is fixed on the cross beam through bolts, and the lower end of the vertical part is inserted into the fixing groove on the template A or the template B. By adopting the structure, the two supporting template mechanisms can be supported by the 7-type fixing rods matched with the cross beam, the 7-type fixing rods can be used for realizing vertical positioning of the template A and the template B, the template A and the template B are ensured to have stronger rigidity, and the concrete is prevented from expanding when being poured. The fixed slot can let 7 types dead lever install on A template or B template, can realize the not hard up of 7 types dead lever through the bolt, is convenient for install and dismantle.

Preferably, the lower end of the vertical part is provided with an inserting block matched with the fixing groove, and the inserting block and the lower end of the vertical part are integrally connected in a step shape. By adopting the structure, a certain gap is formed between the vertical part and the template A or the template B, so that the 7-type fixing rod is convenient to disassemble and assemble.

Preferably, the beam is provided with a clamping groove at a position corresponding to the template A or the template B, and the upper end of the template A or the template B is clamped in the clamping groove. The supporting structure aims to further support and fix the template A or the template B, so that the structures of the two supporting template mechanisms are more stable.

Preferably, the outer side of the foundation pit is also provided with a diagonal draw bar for casting a stay cable; the template A or the template B is provided with an avoidance groove at the position corresponding to the diagonal draw bar; and the diagonal draw bar penetrates through the avoiding groove and extends into the foundation pit. Through setting up the diagonal member, when pouring the hat roof beam, the concrete can get into the diagonal member, forms the cable structure, plays fixed hat roof beam, improves the effect of the stability of hat roof beam.

Further, the lower end of the avoiding groove is provided with a baffle plate, and the baffle plate can seal the exposed part of the avoiding groove to prevent concrete from leaking outside when pouring.

A crown beam construction method comprises the following steps:

(1) Binding the crown beam steel bars, and connecting each foundation pile together;

(2) Template mechanism is strutted to modularization concatenation foundation ditch both sides:

(2.1) firstly arranging two templates A or B on two sides of the foundation pit, and fixing the templates A or B on the two sides through a supporting and fixing mechanism;

(2.2) then inserting the hinge shaft on the next template A into the arc-shaped sleeve on the previous template B, or sleeving the arc-shaped sleeve of the next template B into the hinge shaft on the previous template A; the template A and the template B are hinged;

(2.3) adjusting the hinge angle between the template A and the template B according to the trend of the crown beam to be poured; after the templates A or the templates B on the two sides of the foundation pit are hinged, fixing the templates A or the templates B on the two sides through a supporting and fixing mechanism;

(2.3) repeating the steps (2.2) - (2.3); a plurality of templates A and a plurality of templates B of each side supporting template mechanism are sequentially hinged with each other at intervals;

(3) Pouring concrete in the middle areas of the supporting template mechanisms on the two sides, so that the crown beam is poured;

(4) Dismantling the supporting template mechanism: firstly, removing the supporting and fixing mechanism, and then removing the template A and the template B;

(5) And maintaining the crown beam.

Preferably, in the step (2), the template A and the template B are preferentially arranged at the corner of the crown beam to be poured, and the hinge structure of the template A and the template B is positioned at the corner of the crown beam to be poured.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the foundation pit crown beam pouring formwork, the hinge structure is arranged between the formwork A and the formwork B, and when the formwork is erected, the hinge shaft on the formwork A is inserted into the arc sleeve on the formwork B, so that the formwork A is hinged to the formwork B, modular splicing can be realized, the mounting and dismounting of the supporting formwork mechanism are facilitated, the construction is simple and convenient, and the supporting formwork mechanism can be reused.

2. According to the foundation pit crown beam pouring template, the template A is hinged with the template B, so that the connection precision between the template A and the template B is high; and the angle between the template A and the template B can be accurately adjusted, and the method is suitable for the construction of the crown beam with various angles.

3. According to the foundation pit crown beam pouring template disclosed by the invention, the template A and the template B are tightly connected, the sealing property is strong, the concrete leakage can be prevented, and the waste of the concrete is reduced.

4. According to the foundation pit crown beam pouring template, the template A and the template B on the two sides of a foundation pit are fixedly supported through the supporting and fixing mechanism, so that the template A and the template B are prevented from shifting when concrete is poured, and the whole structure is very stable and is not easy to deform.

Drawings

Fig. 1-2 are schematic structural views of one embodiment of the foundation pit crown beam pouring template, where fig. 1 is a perspective view, and fig. 2 is a perspective view in another view direction.

Fig. 3 is a partially enlarged view of a portion a in fig. 1.

Fig. 4 is a perspective view of the connection of the a and B templates in the present invention.

Fig. 5 is a partially enlarged view of fig. 4 at B.

Fig. 6 to 7 are schematic structural views of the template a according to the present invention, wherein fig. 6 is a perspective view and fig. 7 is a top view.

Fig. 8 is a partial enlarged view at C in fig. 7.

Fig. 9 is a top view of the B template of the present invention.

Fig. 10 is a partially enlarged view of fig. 9 at D.

Fig. 11 is a perspective view of a clasping mechanism in the present invention.

Fig. 12 is a schematic view of the internal structure of the clasping mechanism and the hinge structure in the present invention.

Fig. 13 to 14 are schematic structural views of a hidden part of a housing in a clasping mechanism in the present invention, wherein fig. 13 is a perspective view, and fig. 14 is a perspective view from another perspective view direction.

Fig. 15 is a schematic view of the internal structure of the clasping mechanism in the present invention.

Fig. 16 is a distribution diagram of the elastic self-locking assembly in the invention.

Fig. 17 is a partial enlarged view at E in fig. 1.

Fig. 18-19 are schematic structural views of a support fixing mechanism in the present invention, in which fig. 18 is a perspective view and fig. 19 is a front view.

Fig. 20 is a perspective view of a 7-type fixing rod in the present invention.

Fig. 21 is a schematic view showing the installation of the diagonal member (hidden baffle) in the present invention.

Fig. 22 is a schematic view showing the installation of the diagonal member in the present invention.

Fig. 23 is a schematic structural view of the construction of the crown beam in the present invention.

Detailed Description

In order to make those skilled in the art understand the technical solutions of the present invention well, the present invention will be further described below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1-2, the embodiment discloses a foundation pit crown beam pouring template, which includes supporting template mechanisms 2 vertically and oppositely disposed at two sides of a foundation pit, and a plurality of supporting and fixing mechanisms 3 disposed between the two supporting template mechanisms 2 for supporting and fixing the two supporting template mechanisms 2.

Referring to fig. 2-10, the shoring formwork mechanism 2 includes a plurality of a formwork panels 201 and a plurality of B formwork panels 202; the template A comprises a plurality of template A plates 201 and a plurality of template B plates 202, wherein the template A plates 201 and the template B plates 202 are sequentially arranged at intervals, and are connected through a hinge structure; the hinge structure comprises a hinge shaft 4 arranged at the end part of the template A201 and an arc-shaped sleeve 5 arranged on the template B202, and the hinge shaft 4 is rotatably connected with the inner wall of the arc-shaped sleeve 5; an arc-shaped connecting piece 6 is arranged between the articulated shaft 4 and the A template 201; one end of the arc-shaped connecting piece 6 is fixedly connected to the end part of the template A201, and the other end of the arc-shaped connecting piece is fixedly connected to one side of the hinge shaft 4 far away from the end part of the template A201; the axis of the arc-shaped connecting piece 6 is coincided with the axis of the hinge shaft 4.

Referring to fig. 2 to 10, in each supporting formwork mechanism 2, a plurality of a formworks 201 and a plurality of B formworks 202 are sequentially arranged at intervals from each other, that is, arranged in the following manner: a template 201, B template 202, A template 201, \8230;. The template A201 and the template B202 are connected end to end through hinged structures, the hinged shafts 4 are arranged at the two ends of the template A201, and the arc-shaped sleeves 5 are arranged at the two ends of the template B202. By adopting the structure, the modular splicing of the supporting template mechanism 2 can be realized.

Referring to fig. 5 to 8, a space between the hinge shaft 4 and the arc-shaped connecting member 6 is an arc-shaped groove 7, when the template a 201 is hinged to the template B202, the arc-shaped sleeve 5 is located in the arc-shaped groove 7, and the thickness of the arc-shaped groove 7 is greater than or equal to that of the arc-shaped sleeve 5. By adopting the structure, when the hinge joint is carried out, the arc-shaped groove 7 is encircled on the hinge shaft 4, and the arc-shaped connecting piece 6 is encircled on the arc-shaped sleeve 5, so that the hinge joint becomes more stable, the A template 201 and the B template 202 are also ensured to be more tightly hinged, the sealing property is improved, and the concrete leakage is prevented.

Referring to fig. 3-8, a fixing shaft 9 is provided at an upper end of the hinge shaft 4, and the hinge shaft 4 is coaxially arranged with the fixing shaft 9; and the upper end of each hinge structure is provided with a clasping mechanism 8 for preventing the template A201 and the template B202 from rotating relatively.

Referring to fig. 3 and fig. 11 to 16, the clasping mechanism 8 includes a housing 801 disposed at the upper end of the arc-shaped sleeve 5 and clasping components disposed between the housing 801 and the fixing shaft 9 for clasping the fixing shaft 9, wherein each clasping component includes a plurality of elastic self-locking components 802, and the plurality of elastic self-locking components 802 are uniformly distributed along the circumferential direction; wherein, each elastic self-locking assembly 802 comprises a locking block 8021 and a locking spring 8022; one end of the locking block 8021 is hinged on the shell 801; one end of the locking spring 8022 acts on the shell 801, and the other end acts on the middle part of the locking block 8021; the elastic force of the locking spring 8022 urges the other end of the locking block 8021 to tilt and abut against the fixed shaft 9. In the above structure, after the a template 201 and the B template 202 are hinged, the clasping mechanism 8 is installed, the other end of the locking block 8021 is inclined and abutted to the fixing shaft 9 due to the elastic force of the locking spring 8022, so that the distance between the outer surface of the fixing shaft 9 and the hinged position of the locking block 8021 is smaller than the length of the locking block 8021, in one direction, the locking block 8021 cannot cross over the fixing shaft 9, when the a template 201 or the B template 202 is rotated forcibly, the fixing shaft 9 and the shell 801 both have a movement trend, the shell 801 can drive the locking block 8021 to swing, however, because the distance between the outer surface of the fixing shaft 9 and the hinged position of the locking block 8021 is smaller than the length of the locking block 8021, in this direction, the locking block 8021 cannot cross over the fixing shaft 9, thereby clasping the hinging mechanism is realized, the a template 201 and the B template 202 are prevented from being displaced after being arranged, and the connection precision between the templates is improved.

Referring to fig. 12-16, the number of the clasping assemblies is two, and the two clasping assemblies are distributed up and down; wherein the locking blocks 8021 in the two clasping assemblies are inclined in opposite directions. Through setting up above-mentioned structure, can realize A template 201 and B template 202 and take place to hold tightly in two directions, realized A template 201 and B template 202 anticlockwise and clockwise pivoted hold tightly, played complete spacing effect.

Referring to fig. 13-16, there are three resilient self-locking assemblies 802 in each clasping assembly in this embodiment, and each resilient self-locking assembly 802 is 120 ° apart. Embrace mechanism 8 and prevented that casing 801 and fixed axle 9 from taking place relative rotation, casing 801 can pass through the fix with screw at arc cover 5, the diameter of fixed axle 9 is less than the diameter of articulated shaft 4, fixed axle 9 is an organic whole with articulated shaft 4 and sets up, consequently, thereby embrace mechanism 8 and can prevent that A template 201 and B template 202 from taking place to rotate, the realization embrace tightly spacingly.

Referring to fig. 16, the end of the locking block 8021 is an arc-shaped structure, which is more easily attached to the surface of the fixing shaft 9, so as to limit the fixing shaft 9.

Referring to fig. 13-16, a partition 8011 is disposed in the middle of the housing 801, the partition 8011 divides the inner space of the housing 801 into an upper cavity 8012 and a lower cavity 8013, and the two clasping assemblies are respectively disposed in the upper cavity 8012 and the lower cavity 8013; wherein, the locking block 8021 is hinged on the baffle 8011; a stop block 804 is arranged on the baffle 8011, and a guide column 805 is arranged on the stop block 804; the locking spring 8022 is sleeved on the guide column 805, and one end of the locking spring 8022 acts on the stop block 804. Through setting up above-mentioned structure, be convenient for to the installation of embracing the subassembly tightly for the structure becomes compacter, and the guide post 805 can make locking spring 8022 effect direction remain stable, has played installation and guide effect.

Referring to fig. 13-16, a limiting column 803 is disposed on a side of the locking block 8021 away from the locking spring 8022, the limiting column 803 is mounted on the partition 8011, the limiting column 803 of the upper cavity 8012 is mounted on an upper end surface of the partition 8011, and the limiting column 803 of the lower cavity 8013 is mounted on a lower end surface of the partition 8011. Through spacing post 803, prevent that latch segment 8021 from warping and crossing fixed axle 9, spacing post 803 can guarantee that latch segment 8021 plays the effect of locking.

Referring to fig. 1 and 17 to 20, the supporting and fixing mechanism 3 includes a cross beam 301 and 7-type fixing rods 302 oppositely disposed at two ends of the cross beam 301; wherein the 7-type fixing bar 302 includes a horizontal part 3021 and a vertical part 3022; the end of the horizontal part 3021 is hinged to the end of the cross beam 301, the joint of the horizontal part 3021 and the vertical part 3022 is fixed on the cross beam 301 by bolts, and the lower end of the vertical part 3022 is inserted into the fixing groove 10 on the a template 201 or the B template 202. By adopting the structure, the two supporting template mechanisms 2 can be supported through the matching of the 7-shaped fixing rods 302 and the cross beam 301, the 7-shaped fixing rods 302 can vertically position the template A201 and the template B202, the template A201 and the template B202 are guaranteed to have stronger rigidity, and the concrete is prevented from expanding when being poured. The fixing groove 10 can allow the 7-type fixing rod 302 to be installed on the a template 201 or the B template 202, and the 7-type fixing rod 302 can be loosened through bolts, so that the installation and the disassembly are convenient.

Referring to fig. 17 and 20, the lower end of the vertical part 3022 is provided with an insert block 303 which is matched with the fixing groove 10, and the insert block 303 is integrally connected with the lower end of the vertical part 3022 in a stepped shape. With the above structure, a certain gap is provided between the vertical portion 3022 and the a-template 201 or the B-template 202, thereby facilitating the detachment and installation of the 7-type fixing rod 302.

Referring to fig. 18 to 19, the beam 301 is provided with a slot 3011 at a position corresponding to the a template 201 or the B template 202, and an upper end of the a template 201 or the B template 202 is clipped in the slot 3011. The purpose of this is to further support and fix the a-form 201 or the B-form 202, and to stabilize the structure of the two shoring-form mechanisms 2.

Referring to fig. 6 and 17, a plurality of reinforcing ribs 16 are vertically distributed on the outer sides of the a formwork 201 and the B formwork 202, a connecting plate 17 is arranged between the two reinforcing ribs 16, and the fixing groove 10 is formed in the space between the connecting plate 17 and the a formwork 201 or the B formwork 202. With the above structure, the strength of the a template 201 and the B template 202 can be improved.

Referring to fig. 18 to 19, a lifting lug 3012 is disposed at the upper end of the cross beam 301, and the lifting of the supporting and fixing mechanism 3 is realized through the lifting lug 3012, so that the supporting and fixing mechanism 3 is convenient to disassemble and assemble.

Referring to fig. 1, 21 and 22, an inclined pull rod 13 for casting a stay cable is further arranged on the outer side of the foundation pit; the template A201 or the template B202 is provided with an avoidance groove 11 at a position corresponding to the diagonal member 13; the diagonal draw bar 13 penetrates through the avoidance groove 11 and extends into the foundation pit. Through setting up diagonal draw bar 13, when pouring the guan liang, the concrete can get into diagonal draw bar 13, forms the cable structure, plays fixed guan liang, improves the effect of the stability of guan liang.

Referring to fig. 1, 21 and 22, the lower end of the avoiding groove 11 is provided with a baffle 12, and the purpose of the baffle 12 is to seal the exposed part of the avoiding groove 11 and prevent concrete from leaking outside during pouring.

Referring to fig. 1-10, the working principle of the pouring template for the top beam of the foundation pit is as follows:

when erecting the mould, vertically insert articulated shaft 4 in the arc cover 5, can realize articulating between A template 201 and the B template 202 to realize A template 201 and B template 202 high-speed joint, arrange the back with the template mechanism 2 of strutting of foundation ditch both sides, then carry out the fixed stay with the A template 201 of both sides, the B template 202 of both sides through supporting fixed establishment 3, prevent when concreting, prevent that A template 201 and B template 202 from taking place to shift. Because the A template 201 is hinged with the B template 202, the angle between the A template 201 and the B template 202 can be flexibly adjusted, so that the method is suitable for the construction of the crown beam at various angles.

Example 2

The other structure in this embodiment is the same as that in embodiment 1, except that the clasping assembly includes a ratchet wheel provided on the fixed shaft 9, a pawl provided on the housing 801, and a torsion spring for driving the pawl to abut against the ratchet wheel. The number of the holding assemblies is two, and the directions of the ratchet wheels and the pawls of the two holding assemblies are opposite. Through setting up the above-mentioned subassembly of holding tightly, also can play and hold the limiting displacement tightly, and simple structure, locking effect is strong.

Example 3

Referring to fig. 23, the present embodiment discloses a crown beam construction method, including the following steps:

(1) Binding the crown beam reinforcing steel bars 15 and connecting each foundation pile 14 together;

(2) Template mechanism 2 is strutted to modularization concatenation foundation ditch both sides:

(2.1) firstly arranging two templates A201 or two templates B202 on two sides of the foundation pit, and fixing the templates A201 or the templates B202 on the two sides through a supporting and fixing mechanism 3;

(2.2) then inserting the hinge shaft 4 on the next template A201 into the arc-shaped sleeve 5 on the previous template B202, or sleeving the arc-shaped sleeve 5 of the next template B202 into the hinge shaft 4 on the previous template A201; so that the A template 201 is hinged with the B template 202;

(2.3) adjusting the hinge angle between the template A201 and the template B202 according to the trend of the crown beam to be poured; after the template a 201 or the template B202 on the two sides of the foundation pit are hinged, the template a 201 or the template B202 on the two sides are fixed through the supporting and fixing mechanism 3;

(2.3) repeating the steps (2.2) - (2.3); a plurality of templates A201 and a plurality of templates B202 of each side supporting template mechanism 2 are sequentially hinged at intervals;

(3) Pouring concrete in the middle areas of the supporting template mechanisms 2 on the two sides, so that the crown beam is poured;

(4) Dismantling the supporting template mechanism 2: firstly, removing the supporting and fixing mechanism 3, and then removing the template A201 and the template B202;

(5) And maintaining the crown beam.

Preferably, in the step (2), the A template 201 and the B template 202 are preferentially arranged at the corner of the crown beam to be poured, and the hinge structure of the A template 201 and the B template 202 is positioned at the corner of the crown beam to be poured. The direction of the foundation pit is consistent with the direction of the crown beam.

In the step (4), when the template a 201 and the template B202 are removed, the hinge shaft 4 in the template a 201 is separated from the arc-shaped sleeve 5 in the template B202, so that the removal can be realized.

The specific steps of the step (1) are as follows: excavating a foundation pit, crushing foundation piles 14 on the foundation pit, exposing reinforcing steel bars 15 on the foundation piles 14, binding the reinforcing steel bars 15 of each foundation pile 14 together, and finally binding to form the crown beam reinforcing steel bars 15.

The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and equivalents thereof, which are intended to be included in the scope of the present invention.

Claims

1. A foundation pit crown beam pouring template is characterized by comprising supporting template mechanisms which are vertically and oppositely arranged on two sides of a foundation pit and a plurality of supporting and fixing mechanisms which are arranged between the two supporting template mechanisms and used for supporting and fixing the two supporting template mechanisms; wherein, the first and the second end of the pipe are connected with each other,

2. The foundation pit crown beam pouring template according to claim 1, wherein a space between the hinge shaft and the arc-shaped connecting piece is an arc-shaped groove, when the template A is hinged to the template B, the arc-shaped sleeve is positioned in the arc-shaped groove, and the thickness of the arc-shaped groove is larger than or equal to that of the arc-shaped sleeve.

3. The foundation pit crown beam pouring template as claimed in claim 1, wherein a fixed shaft is arranged at the upper end of the hinged shaft, and the hinged shaft is coaxially arranged with the fixed shaft; the upper end of each hinged structure is provided with a clasping mechanism for preventing the template A and the template B from rotating relatively, and each clasping mechanism comprises a shell arranged at the upper end of the arc-shaped sleeve and a clasping assembly arranged between the shell and the fixed shaft and used for clasping the fixed shaft; the clasping assemblies respectively comprise a plurality of elastic self-locking assemblies, and the elastic self-locking assemblies are uniformly distributed along the circumferential direction; each elastic self-locking assembly comprises a locking block and a locking spring; one end of the locking block is hinged to the shell; one end of the locking spring acts on the shell, and the other end of the locking spring acts on the middle part of the locking block; the other end of the locking block is pressed against the fixed shaft in an inclined mode through the elasticity of the locking spring.

4. The foundation pit crown beam pouring template as claimed in claim 3, wherein the number of the clamping assemblies is two, and the two clamping assemblies are distributed up and down; wherein, the inclination directions of the locking blocks in the two clasping assemblies are opposite.

5. The foundation pit crown beam pouring template as claimed in claim 4, wherein a partition plate is arranged in the middle of the shell, the partition plate divides the inner space of the shell into an upper cavity and a lower cavity, and the two clasping assemblies are respectively positioned in the upper cavity and the lower cavity; the locking block is hinged on the partition plate; a baffle plate is arranged on the baffle plate, and a guide post is arranged on the baffle plate; the locking spring is sleeved on the guide post, and one end of the locking spring acts on the stop block.

6. The foundation pit crown beam pouring template as claimed in claim 1, wherein the supporting and fixing mechanism comprises a cross beam and 7-shaped fixing rods oppositely arranged at two ends of the cross beam; wherein the 7-type fixing rod comprises a horizontal part and a vertical part; the end part of the horizontal part is hinged to the end part of the cross beam, the joint of the horizontal part and the vertical part is fixed on the cross beam through bolts, and the lower end of the vertical part is inserted into the fixing groove in the template A or the template B.

7. The foundation pit crown beam pouring template as claimed in claim 6, wherein the lower end of the vertical part is provided with an inserting block matched with the fixing groove, and the inserting block and the lower end of the vertical part are integrally connected in a step shape.

8. The foundation pit crown beam pouring template according to claim 6, wherein a clamping groove is formed in the position, corresponding to the template A or the template B, of the cross beam, and the upper end of the template A or the upper end of the template B are clamped into the clamping groove.

9. The foundation pit crown beam pouring template as claimed in claim 1, wherein a diagonal draw bar for pouring a stay cable is further arranged on the outer side of the foundation pit; the template A or the template B is provided with an avoidance groove at the position corresponding to the diagonal draw bar; and the diagonal draw bar penetrates through the avoiding groove and extends into the foundation pit.

10. A method for constructing a crown beam, which is applied to the foundation pit crown beam pouring template as claimed in any one of claims 1 to 9, and comprises the following steps:

(2.3) repeating steps (2.2) - (2.3); a plurality of templates A and a plurality of templates B of each side supporting template mechanism are sequentially hinged with each other at intervals;

(5) And maintaining the crown beam.