CN113653060A - Deep foundation pit bottom plate concrete pouring system with multiple supporting beams and construction method thereof - Google Patents
Deep foundation pit bottom plate concrete pouring system with multiple supporting beams and construction method thereof Download PDFInfo
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- CN113653060A CN113653060A CN202110854519.6A CN202110854519A CN113653060A CN 113653060 A CN113653060 A CN 113653060A CN 202110854519 A CN202110854519 A CN 202110854519A CN 113653060 A CN113653060 A CN 113653060A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
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Abstract
The invention relates to a deep foundation pit bottom plate concrete pouring system with a plurality of supporting beams and a construction method thereof, wherein the concrete pouring system comprises: the first cantilever support is fixed on the inner side of the upper supporting beam; the second cantilever support is fixed on the inner side of the at least one support beam in the middle in a one-to-one cantilever manner; the third cantilever support is fixed on the inner side of the lower supporting beam in a cantilever manner; the discharge hopper is arranged at the cantilever end of the first cantilever support; the vertical concrete conveying pipe is fixed with the overhanging ends of all the second overhanging brackets, and the inlet of the vertical concrete conveying pipe is communicated with the discharge port of the discharge hopper; the discharge hopper is arranged at the cantilever end of the third cantilever support, and a feed inlet of the discharge hopper is communicated with an outlet of the vertical concrete conveying pipe; the horizontal concrete conveying pipe is supported and arranged at the bottom of the foundation pit through a plurality of adjusting supports with different heights, an inlet of the horizontal concrete conveying pipe is communicated with a discharge hole of the discharge hopper, and an outlet of the horizontal concrete conveying pipe points to a point to be poured. The invention reduces the occupation of the construction site and overcomes the problem caused by small construction site.
Description
Technical Field
The invention relates to the field of foundation pit construction of constructional engineering, in particular to a deep foundation pit bottom plate concrete pouring system with multiple supporting beams and a construction method thereof.
Background
With the continuous development of the building engineering industry, the depth of a foundation pit is deeper and deeper, and the geological conditions are more complex, so that higher requirements are provided for a supporting structure and an inner supporting system. At present, the ultra-deep foundation pit in the riprap sea-filling area generally adopts the supporting form of 'diaphragm wall + steel upright post + concrete support', and the number of supporting layers is usually more, and is mostly the planar arrangement form of 'ring brace + straight brace + bracing + slab brace'. Complicated braced system has brought great difficulty to using the day pump to pour, and the swing of day pump horn is difficult, need retrieve the horn repeatedly and put into the foundation ditch again, causes the decline of pouring speed.
Meanwhile, many current engineering projects face the current situations of insufficient construction sites and traffic difficulty, which are very unfavorable for pouring large-volume concrete, the concrete tank truck consumes time when entering and exiting, more day pumps cannot be parked in a narrow site for pouring simultaneously, and the traffic jam is further caused by the arrangement of the day pumps, so that the pouring speed is reduced. In addition, the foundation pit bottom plate is large in thickness and wide in area, and the quality problems of cracks, water leakage and the like of the foundation pit bottom plate are caused by the fact that a cold joint is generated inevitably due to the fact that the pouring speed of concrete is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides a deep foundation pit bottom plate concrete pouring system with a plurality of supporting beams and a construction method thereof.
The invention is realized by the following scheme: a deep foundation pit floor concrete placement system of many supporting beams includes:
the first cantilever support is fixed on the inner side of a supporting beam at the upper part in a cantilever manner;
the second cantilever supports are fixedly cantilevered on the inner sides of the at least one supporting beam in the middle in a one-to-one correspondence manner;
the third cantilever support is fixed on the inner side of a support beam at the lower part in a cantilever manner;
the discharge hopper is arranged at the cantilever end of the first cantilever support;
the vertical concrete conveying pipe is fixed with the overhanging ends of all the second overhanging brackets, and the inlet of the vertical concrete conveying pipe is communicated with the discharge port of the discharge hopper;
the discharge hopper is arranged at the cantilever end of the third cantilever support, and a feed inlet of the discharge hopper is communicated with an outlet of the vertical concrete conveying pipe;
the horizontal concrete conveying pipe is arranged at the bottom of the foundation pit through a plurality of adjusting supports with different heights, the inlet of the horizontal concrete conveying pipe is communicated with the discharge hole of the discharge hopper, and the outlet of the horizontal concrete conveying pipe points to a point to be cast at the bottom of the deep foundation pit.
The deep foundation pit bottom plate concrete pouring system with the multiple support beams is further improved in that the adjusting support comprises a U-shaped support for supporting the horizontal concrete conveying pipe and an A-shaped support which is fixed at the bottom of the U-shaped support and adjustable in height.
The deep foundation pit bottom plate concrete pouring system of the multiple support beams is further improved in that the A-shaped support comprises a base, a vertical support fixed in the middle of the base and a plurality of inclined supports fixed at intervals along the edge of the base, each vertical support comprises a threaded sleeve, an upper screw and a lower screw, the upper screw and the lower screw are connected to the upper end and the lower end of the threaded sleeve in a screwed mode respectively, the lower screw is fixed to the base, the upper screw is fixed to the U-shaped support, the top ends of the inclined supports are fixed to a top plate in a gathering mode, and a limiting hole for the threaded sleeve to penetrate through is formed in the top plate.
The deep foundation pit bottom plate concrete pouring system for the multiple support beams is further improved in that the first cantilever support, the second cantilever support and the third cantilever support respectively comprise two cantilever channel steels, one ends of the two cantilever channel steels extend out of the corresponding support beams to form two cantilever ends, the other ends of the two cantilever channel steels are fixed to the top surfaces of the corresponding support beams in a lap joint mode, and the cantilever length of the cantilever channel steels is not less than 1.5: 1.
The deep foundation pit bottom plate concrete pouring system with the multiple support beams is further improved in that the two overhanging ends of the first overhanging bracket are supported on two sides of the bottom of the discharge hopper in a one-to-one mode.
The deep foundation pit baseplate concrete pouring system of the multiple support beams is further improved in that the second cantilever support further comprises a fixing frame fixed at the cantilever ends of the corresponding two cantilever channel steel, and the fixing frame is encircled on the peripheral wall of the vertical concrete conveying pipe.
The deep foundation pit floor concrete pouring system with the multiple support beams is further improved in that the third cantilever support further comprises at least one reinforcing plate, two inclined struts and four anti-overturning angle steels, the reinforcing plate is fixed between the cantilever ends of the two corresponding cantilever channel steels at intervals, the two inclined struts are fixed at the bottoms of the two corresponding cantilever ends in a one-to-one mode, one ends, far away from the corresponding cantilever ends, of the two inclined struts are fixed to the inner sides of the corresponding support beams, and the four anti-overturning angle steels are arranged at the tops of the cantilever ends and correspond to the four corners of the discharge hopper one by one.
The deep foundation pit bottom plate concrete pouring system with the plurality of support beams is further improved in that the discharging hopper is internally provided with the net piece.
The invention also provides a construction method of the deep foundation pit bottom plate concrete pouring system with the plurality of supporting beams, which comprises the following steps:
hoisting a third cantilever support and a discharge hopper, fixing the third cantilever support inside a supporting beam at the lower part in a cantilever manner, and installing the discharge hopper at the cantilever end of the third cantilever support;
hoisting at least one second cantilever support and a vertical concrete conveying pipe, fixing the at least one second cantilever support inside at least one supporting beam in the middle in a one-to-one correspondence manner, fixing the vertical concrete conveying pipe and the cantilever ends of all the second cantilever supports, and communicating the outlet of the vertical concrete conveying pipe with the feed inlet of the discharge hopper;
hoisting a first cantilever support and a discharge hopper, fixing the first cantilever support inside the upper support beam in a cantilever manner, installing the discharge hopper at the cantilever end of the first cantilever support, and communicating a discharge opening of the discharge hopper with an inlet of the vertical concrete conveying pipe;
according to the pouring sequence of the bottom plate of the on-site deep foundation pit, placing a plurality of adjusting supports with different heights in advance, and enabling bearing points of the adjusting supports to be located on connecting lines of a discharge port of the discharge hopper and a to-be-poured point at the bottom of the deep foundation pit;
and hoisting the horizontal concrete conveying pipe, placing the horizontal concrete conveying pipe on the plurality of bearing points, and communicating the inlet of the horizontal concrete conveying pipe with the discharge hole of the discharge hopper.
The construction method of the deep foundation pit bottom plate concrete pouring system with the plurality of support beams is further improved as follows:
the adjusting bracket comprises a U-shaped support for supporting the horizontal concrete conveying pipe and an A-shaped bracket which is fixed at the bottom of the U-shaped support and has adjustable height;
when a plurality of adjusting supports with different heights are placed in advance, the height and the placement angle of the A-shaped support are adjusted to adjust the bearing height and the bearing angle of the U-shaped support, so that all the U-shaped supports are located on the connecting line, and the bearing angles of all the U-shaped supports are consistent with the connecting line direction.
The present invention includes but is not limited to the following benefits:
1. adopt overhanging type concrete conveying channel, utilize multichannel supporting beam as the strong point, reduced the occupation to the construction site, overcome the unfavorable traffic that causes because of the construction site is narrow and small, pour inefficiency and pour the not problem such as quality of a project.
2. Adopt overhanging type discharge hopper, reduce the space of a supporting beam/stack bridge plate and occupy, be favorable to the concrete tank car business turn over to unload, reduce traffic jam, need not to use the sky pump to assist simultaneously except receiving the face, provide the solution for the project that the construction site is not enough.
3. Directly unload the concrete to waiting to pour the point through discharge hopper, play hopper, vertical and horizontal concrete conveying pipe, be favorable to promoting concrete placement speed, reduce the production of cold joint, reduce the foundation ditch bottom plate and appear the crack and leak the possibility, practice thrift the later maintenance cost.
Drawings
FIG. 1 shows an elevational view of the installation of a vertical concrete pipe of the present invention.
Fig. 2 shows an enlarged schematic view at a in fig. 1.
Fig. 3 shows a schematic plan view of fig. 2.
Fig. 4 shows a schematic side view of fig. 2.
Fig. 5 shows an enlarged schematic view at B in fig. 1.
Fig. 6 shows a schematic plan view of fig. 5.
Fig. 7 shows a side schematic view of fig. 5.
Fig. 8 shows an enlarged schematic view at C in fig. 1.
Fig. 9 shows a schematic plan view of the third cantilever mount of fig. 8.
Fig. 10 shows a schematic D-D cross-sectional view of fig. 9.
Fig. 11 is a side view schematically illustrating an overall structure of a deep foundation pit floor concrete casting system with a plurality of support beams according to the present invention.
Fig. 12 shows a schematic plan view of the changed state of fig. 11 after switching of the points to be cast.
Fig. 13 shows a schematic structural view of the adjustable support of the present invention.
Detailed Description
In order to solve the problems of unfavorable traffic, low pouring efficiency, poor pouring quality and the like caused by the fact that a construction site is narrow and small when the bottom plate of the existing foundation pit is poured, the invention provides a deep foundation pit bottom plate concrete pouring system with a plurality of supporting beams and a construction method thereof.
The concrete pouring system for deep foundation pit floors of the multiple supporting beams and the construction method thereof will be further described with specific embodiments and accompanying drawings.
Referring to fig. 11 or 12, a deep foundation pit floor concrete placement system with multiple supporting beams includes:
the first cantilever support 2 is fixed on the inner side of a support beam 1 on the upper part in a cantilever manner;
the at least one second cantilever support 3 is fixedly cantilevered inside the at least one support beam 1 in the middle in a one-to-one correspondence manner;
the third cantilever support 4 is fixed inside the support beam 1 at the lower part in a cantilever manner;
the discharge hopper 5 is arranged at the cantilever end of the first cantilever bracket 2;
the vertical concrete conveying pipe 6 is fixed with the overhanging ends of all the second overhanging brackets 3, the inlet of the vertical concrete conveying pipe 6 is communicated with the discharge port of the discharge hopper 5, and preferably, the inlet at the top end of the vertical concrete conveying pipe 6 extends into the discharge hopper 5 by 500-600 mm through the discharge port of the discharge hopper 5;
the discharge hopper 7 is arranged at the overhanging end of the third overhanging bracket 4, and a feed inlet of the discharge hopper 7 is communicated with an outlet of the vertical concrete conveying pipe 6;
horizontal concrete conveying pipe 8 is propped up and is located the foundation ditch bottom through a plurality of different adjusting bracket 9 of height, and makes this horizontal concrete conveying pipe 8's entry and this discharge gate intercommunication that goes out hopper 7, and this horizontal concrete conveying pipe 8's export is directional this deep foundation ditch bottom to treat the pouring point.
Specifically, the fixing positions of the first cantilever bracket 2, the second cantilever bracket 3, and the third cantilever bracket 4 are specifically determined by the supporting structure of the deep foundation pit and the pouring condition of the foundation pit bottom plate. Referring to fig. 1, in the present embodiment, the first cantilever brackets 2 are cantilevered and fixed to the inside of the uppermost one of the support beams 1, the third cantilever brackets 4 are fixed to the inside of the lowermost one of the support beams 1, and the second cantilever brackets 3 are cantilevered and fixed in the same number as the number of the middle support beams 1 (i.e., the support beams between the uppermost one and the lowermost one) in a one-to-one correspondence.
The first cantilever support 2, the second cantilever support 3 and the third cantilever support 4 comprise two cantilever channel steels 21, one end of each of the two cantilever channel steels 21 extends out of the corresponding supporting beam 1 to form two cantilever ends, the other ends of the two cantilever channel steels are fixed to the top surface of the corresponding supporting beam 1 through chemical bolts 22 and fixing steel plates 23 in an overlapping mode, the cantilever length of the cantilever channel steels 21 is not less than 1.5:1, and the bearing capacity of the cantilever ends is guaranteed, wherein the chemical bolts 22 are preferably fixed on the corresponding fixing steel plates 23 through double nuts.
Further: as shown in fig. 3 to 4, the discharge hopper 5 is formed by welding steel plates of 1mm thickness, and the two overhanging ends of the first overhanging bracket 2 are supported on two sides of the bottom of the discharge hopper 5 one by one.
As shown in fig. 5 to 7, the vertical concrete delivery pipe 6 is made of a steel pipe with a diameter of 300mm to 400mm and a wall thickness of 10mm or more, and the steel pipe is preferably integrally formed and has a middle seamless structure, so as to reduce the risk of damage to the steel pipe during long-time casting. The second cantilever bracket 3 further includes a fixing frame 31 (formed by welding steel plates) fixed at the cantilever ends of the corresponding two cantilever channel steel 21, and the fixing frame 31 is enclosed on the peripheral wall of the vertical concrete conveying pipe 6 and is welded and fixed with the peripheral wall of the vertical concrete conveying pipe 6.
As shown in fig. 8 to 10, the discharge hopper 7 is formed by welding steel plates, and since a large impact force is applied to the discharge hopper 7 during the concrete conveying process, in order to increase the bearing capacity of the discharge hopper 7, the thickness of the bottom steel plate is not less than 20mm, and it is preferable that the bottom position is locally reinforced by multiple steel plates with a thickness of 20 mm. In addition, the third cantilever support 4 should also have a larger bearing capacity, so in this embodiment, the third cantilever support 4 further includes at least one reinforcing plate 41, two braces 42 and four anti-overturning angle steels 43, the at least one reinforcing plate 41 is fixed between the cantilever ends of the corresponding two cantilever channels 21 at intervals and constitutes a cantilever base for supporting the discharge hopper 7, the two braces 42 are fixed at the bottom of the corresponding two cantilever ends one-to-one, one end of the two braces 42 away from the corresponding cantilever end is fixed to the inner side of the corresponding support beam 1, the four anti-overturning angle steels 43 are arranged at the top of the cantilever end and correspond to the four corners of the discharge hopper 7 one by one, the reinforcing plate 41 is made of steel plates and welded to the cantilever ends, the braces 42 are made of channel steel, the two ends of the braces can be fixed by chemical bolts 22 and fixing steel plates 23, the overturn-preventing angle iron 43 is formed by welding 10mm thick steel plates, the height is 150 mm-200 mm, and the inner distance of the overturn-preventing angle iron 43 is 10 mm-20 mm larger than the size of the discharge hopper 7, so that the discharge hopper 7 is ensured to be installed smoothly, and the displacement of the discharge hopper 7 during working is prevented. In addition, in order to further improve the bearing capacity of the third cantilever bracket 4, in the present embodiment, the cantilever channel 21 and the top edge of the corresponding support beam 1 are further fixed by adding the chemical bolts 22 and the fixing steel plates 23.
As a preferred embodiment, the discharge hopper 5 is provided with a mesh at the feeding opening, on one hand, to prevent concrete from splashing, and on the other hand, to prevent foreign matters with larger diameter in the concrete from blocking the vertical concrete conveying pipe 6.
As a preferred embodiment, referring to fig. 13, the adjusting bracket 9 comprises a U-shaped bracket 91 for supporting the horizontal concrete conveying pipe 8, and an a-shaped bracket fixed at the bottom of the U-shaped bracket 91 and adjustable in height.
Specifically, the horizontal concrete conveying pipe 8 is composed of high-quality PVC pipes with the diameter of 400mm and the wall thickness of 10mm, and the rigidity and the wear resistance are guaranteed while the unloading speed is met. In order to prevent the horizontal concrete duct 8 from slipping, it is preferable in the present embodiment that the horizontal concrete duct 8 and the corresponding U-shaped bracket 91 are fixed by reinforcing bars having a diameter of 14mm to 18 mm. Preferably, in this embodiment, the a-shaped bracket includes a base 92, a vertical support 93 fixed in the middle of the base 92, and a plurality of diagonal supports 94 fixed at intervals along the edge of the base 92, the vertical support 93 includes a threaded sleeve 931, and an upper screw 932 and a lower screw 933 screwed to the upper end and the lower end of the threaded sleeve 931, the lower screw 933 is fixed to the base 92, the upper screw 932 is fixed to the U-shaped bracket 91, the top ends of the plurality of diagonal supports 94 are fixed to a top plate 95 in a converging manner, and the top plate 95 is provided with a limiting hole for the threaded sleeve 931 to penetrate through. Vertical braces 93 through above-mentioned structure both can realize supporting 91's altitude mixture control to the U type, can realize supporting 91's the regulation of putting the angle to the U type again, can easily hold in the palm 91 a plurality of U types according to appointed angle and highly adjusting to make this horizontal concrete conveying pipe 8 entry can with go out the discharge gate intercommunication of hopper 7, the directional point of pouring of waiting of export. When the point to be poured is replaced, the outlet of the horizontal concrete conveying pipe 8 is directed to the point to be poured by replacing the point to be poured by adjusting the number and the placing position of the adjustable supports and the height and the angle of the U-shaped bracket 91, and fig. 12 is a state after the point to be poured is replaced in fig. 11. Of course, in order to adjust the placing position of the adjustable bracket, a pulley may be disposed at the bottom of the base 92.
The invention also provides a construction method of the deep foundation pit bottom plate concrete pouring system with the plurality of supporting beams, which is shown in the figure 11 and comprises the following steps:
Specifically, before the step is carried out, the capacity and the fixing position of the discharge hopper 5 and the discharge hopper 7 are determined according to a supporting drawing and a bottom plate drawing of the deep foundation pit, and the number of the second cantilever brackets 3, the specific installation positions of the three cantilever brackets (2-4) and the like are determined.
and 5, hoisting the horizontal concrete conveying pipe 8, placing the horizontal concrete conveying pipe 8 on a plurality of bearing points, and communicating an inlet of the horizontal concrete conveying pipe 8 with a discharge hole of the discharge hopper 7.
And finally, performing concrete pouring on the points to be poured, after the points to be poured are poured, replacing the next points to be poured, adjusting the number and the placing positions of the adjusting brackets 9 to enable all the bearing points to be located on a connecting line between the discharge port and the next points to be poured, as shown in fig. 12, performing concrete pouring on the next points to be poured, and so on until all the points to be poured are poured.
As a preferred embodiment, with reference to fig. 13:
the adjusting bracket 9 comprises a U-shaped support 91 for supporting the horizontal concrete conveying pipe 8 and an A-shaped bracket which is fixed at the bottom of the U-shaped support 91 and has adjustable height;
when putting the different regulation support 9 of a plurality of heights in advance, adjust the height of this A shape support and place the bearing height and the bearing angle that the angle adjusted this U type and held in the palm 91, make all this U types hold in the palm 91 and all be located this line, and make all this U types hold in the palm the bearing angle of 91 all unanimous with this line direction.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the scope of the invention is to be determined by the appended claims.
Claims (10)
1. The utility model provides a deep basal pit bottom plate concrete placement system of many supporting beams which characterized in that includes:
the first cantilever support is fixed on the inner side of a supporting beam at the upper part in a cantilever manner;
the second cantilever supports are fixedly cantilevered on the inner sides of the at least one supporting beam in the middle in a one-to-one correspondence manner;
the third cantilever support is fixed on the inner side of a support beam at the lower part in a cantilever manner;
the discharge hopper is arranged at the cantilever end of the first cantilever support;
the vertical concrete conveying pipe is fixed with the overhanging ends of all the second overhanging brackets, and the inlet of the vertical concrete conveying pipe is communicated with the discharge port of the discharge hopper;
the discharge hopper is arranged at the cantilever end of the third cantilever support, and a feed inlet of the discharge hopper is communicated with an outlet of the vertical concrete conveying pipe;
the horizontal concrete conveying pipe is arranged at the bottom of the foundation pit through a plurality of adjusting supports with different heights, the inlet of the horizontal concrete conveying pipe is communicated with the discharge hole of the discharge hopper, and the outlet of the horizontal concrete conveying pipe points to a point to be cast at the bottom of the deep foundation pit.
2. The deep foundation pit floor concrete placement system for multiple support beams of claim 1, wherein said adjustable support comprises a U-shaped bracket for supporting said horizontal concrete pipe, and a height adjustable a-shaped bracket fixed to the bottom of the U-shaped bracket.
3. The deep foundation pit floor concrete pouring system for the multiple support beams of claim 1, wherein the a-shaped support comprises a base, a vertical support fixed in the middle of the base and a plurality of diagonal supports fixed at intervals along the edge of the base, the vertical support comprises a threaded sleeve, and an upper screw and a lower screw which are respectively screwed on the upper end and the lower end of the threaded sleeve, the lower screw is fixed on the base, the upper screw is fixed on the U-shaped support, the top ends of the plurality of diagonal supports are fixed on a top plate in a gathering manner, and a limit hole for the threaded sleeve to penetrate is formed in the top plate.
4. The deep foundation pit floor concrete pouring system for the multiple support beams of claim 1, wherein the first cantilever support, the second cantilever support and the third cantilever support each comprise two cantilever channels, one end of each of the two cantilever channels extends out of the corresponding support beam and forms two cantilever ends, the other end of each of the two cantilever channels is fixed to the top surface of the corresponding support beam in a lap joint manner, and the cantilever length of each cantilever channel is not less than 1.5: 1.
5. The deep foundation pit floor concrete placement system for multiple support beams of claim 4, wherein said cantilevered ends of said first outrigger bracket are supported one-to-one on both sides of the bottom of said discharge hopper.
6. The deep foundation pit floor concrete placement system for multiple support beams of claim 4, wherein said second outrigger further comprises a fixed frame secured to the outrigger ends of the respective two outrigger channels, said fixed frame being attached around the perimeter wall of said vertical concrete delivery pipe.
7. The deep foundation pit floor concrete placement system of multiple support beams of claim 4, wherein said third cantilever support further comprises at least one reinforcing plate, two braces and four anti-overturning angle steels, at least one reinforcing plate is fixed between the cantilever ends of the corresponding two cantilever channels at intervals, two braces are fixed at the bottom of the corresponding two cantilever ends one-to-one, one end of the two braces far away from the corresponding cantilever ends is fixed to the inner side of the corresponding support beam, and four anti-overturning angle steels are arranged at the top of the cantilever ends and correspond to the four corners of the discharge hopper one by one.
8. The deep foundation pit floor concrete placement system for a plurality of support beams of claim 1, wherein said discharge hopper has a mesh disposed therein.
9. A construction method of a deep foundation pit bottom plate concrete pouring system with a plurality of supporting beams is characterized by comprising the following steps:
hoisting a third cantilever support and a discharge hopper, fixing the third cantilever support inside a supporting beam at the lower part in a cantilever manner, and installing the discharge hopper at the cantilever end of the third cantilever support;
hoisting at least one second cantilever support and a vertical concrete conveying pipe, fixing the at least one second cantilever support inside at least one supporting beam in the middle in a one-to-one correspondence manner, fixing the vertical concrete conveying pipe and the cantilever ends of all the second cantilever supports, and communicating the outlet of the vertical concrete conveying pipe with the feed inlet of the discharge hopper;
hoisting a first cantilever support and a discharge hopper, fixing the first cantilever support inside the upper support beam in a cantilever manner, installing the discharge hopper at the cantilever end of the first cantilever support, and communicating a discharge opening of the discharge hopper with an inlet of the vertical concrete conveying pipe;
according to the pouring sequence of the bottom plate of the on-site deep foundation pit, placing a plurality of adjusting supports with different heights in advance, and enabling bearing points of the adjusting supports to be located on connecting lines of a discharge port of the discharge hopper and a to-be-poured point at the bottom of the deep foundation pit;
and hoisting the horizontal concrete conveying pipe, placing the horizontal concrete conveying pipe on the plurality of bearing points, and communicating the inlet of the horizontal concrete conveying pipe with the discharge hole of the discharge hopper.
10. The method of constructing a deep foundation pit floor concrete casting system for a plurality of support beams as claimed in claim 9, wherein:
the adjusting bracket comprises a U-shaped support for supporting the horizontal concrete conveying pipe and an A-shaped bracket which is fixed at the bottom of the U-shaped support and has adjustable height;
when a plurality of adjusting supports with different heights are placed in advance, the height and the placement angle of the A-shaped support are adjusted to adjust the bearing height and the bearing angle of the U-shaped support, so that all the U-shaped supports are located on the connecting line, and the bearing angles of all the U-shaped supports are consistent with the connecting line direction.
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| US20160305084A1 (en) * | 2013-12-03 | 2016-10-20 | Soletanche Freyssinet | Concreting facility and corresponding concreting method |
| CN104532845A (en) * | 2014-11-18 | 2015-04-22 | 中国建筑第八工程局有限公司 | Deep foundation pit super-thick concrete bottom plate pouring system and construction method |
| CN204662450U (en) * | 2015-05-12 | 2015-09-23 | 中建城市建设发展有限公司 | Under a kind of brace summer, suspension type prevents that spilling chemise builds device |
| CN206971224U (en) * | 2017-06-22 | 2018-02-06 | 中国建筑第八工程局有限公司 | Suitable for the concrete self-flowing pastefill pipe of deep basal pit |
| CN209493945U (en) * | 2018-12-07 | 2019-10-15 | 北京建工国际投资有限责任公司 | A kind of distribution device and connection structure of deep basal pit huge foundation underplate concrete |
| CN110565962A (en) * | 2019-09-18 | 2019-12-13 | 上海建工一建集团有限公司 | Tool type chute and construction method |
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