CN110847192A - Beam type connecting structure for front wall and rear pile combined support and construction method thereof - Google Patents
Beam type connecting structure for front wall and rear pile combined support and construction method thereof Download PDFInfo
- Publication number
- CN110847192A CN110847192A CN201911164868.4A CN201911164868A CN110847192A CN 110847192 A CN110847192 A CN 110847192A CN 201911164868 A CN201911164868 A CN 201911164868A CN 110847192 A CN110847192 A CN 110847192A
- Authority
- CN
- China
- Prior art keywords
- wall
- pile
- row
- rigid frame
- front row
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 230000002787 reinforcement Effects 0.000 claims abstract description 40
- 238000005452 bending Methods 0.000 claims abstract description 14
- 210000003205 muscle Anatomy 0.000 claims description 25
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 18
- 239000004567 concrete Substances 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 230000008093 supporting effect Effects 0.000 abstract description 19
- 238000010008 shearing Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 6
- 239000003673 groundwater Substances 0.000 description 4
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Foundations (AREA)
Abstract
The application relates to a beam type connecting structure for combined supporting of front walls and rear piles, which comprises a front row wall, rear piles, a rigid frame beam, a front row wall crown beam and a rear row pile crown beam; in the width range of the rigid frame beam, the inner side vertical reinforcements of the front row wall are bent along the top of the rigid frame beam, the outer side of the rear row pile crown beam, the bottom of the rigid frame beam and the inner side of the front row wall crown beam to form inner side P-shaped reinforcements of the wall; in the width range of the rigid frame beam, the outer side vertical ribs of the front row wall are bent along the top of the front row wall crown beam and the inner side of the front row wall crown beam to form outer side C-shaped ribs of the wall; a first main rib of a pile of the rear row of piles closest to the front row of walls and a second main rib of a pile of the rear row of piles farthest from the front row of walls are bent downwards after bypassing the upper part of a P-shaped rib on the inner side of the wall at the top of the crown beam of the rear row of piles; the longitudinal ribs of the rest rear row piles on the two sides of the connecting line of the first main rib and the second main rib of the pile are pile L-shaped ribs. The invention can ensure the rigidity of the rigid frame beam connecting the front row wall and the rear row pile, bear bending moment and shearing force, greatly simplify the reinforcement mode of the rigid frame beam and obviously improve the construction efficiency.
Description
Technical Field
The invention relates to a beam type connecting structure for combined supporting of a front wall and a rear pile and a construction method thereof.
Background
At present, urban foundation pit engineering in China often has the following typical characteristics: the basement outer wall is adjacent to a building planning red line; rich storage of high groundwater in field range; and the construction planning does not use supporting structures such as anchor rods outside the red line. Although the traditional cantilever pile supporting or inner support supporting technology can be used for construction within the construction planning red line range and is not influenced by peripheral underground facilities, the depth of a cantilever pile supporting foundation pit is generally not more than 6 meters. The inner support supporting technology needs to construct a large number of reinforced concrete beams or steel structure supporting members in the plane range of foundation pit excavation, so that earthwork excavation, underground foundation and building construction are influenced, and for large foundation pits, the installation and the removal of a large number of supporting members prolong the construction period and increase the manufacturing cost. In order to reduce the influence of the underground water level on the peripheral existing buildings and underground pipe network facilities, the traditional foundation pit supporting technology needs to construct a continuous water interception curtain wall at the periphery of the foundation pit to prevent the groundwater outside the foundation pit from flowing into the foundation pit, and the construction of the water interception curtain wall greatly prolongs the construction period of the project and increases the construction cost of the project.
In order to solve the problem of the traditional foundation pit supporting technology, the supporting technology of the underground continuous wall combined with the inner support is applied to the building engineering. The method has the following advantages: (1) the supporting structures are controlled within the red line range of the building; (2) the underground continuous wall can effectively prevent groundwater outside the foundation pit from flowing into the foundation pit, and effectively control the influence of the groundwater on the surrounding environment of the foundation pit; (3) the inner support can control the deformation of the underground continuous wall.
But the supporting technology of the underground continuous wall combined with the inner support also has the following problems: (1) when the large foundation pit adopts the inner support structure, the rigidity of the middle part of the side wall of the foundation pit is low, and the deformation is overlarge. In order to enhance the rigidity, the side trusses are often adopted, so that the reinforced concrete beam is obviously increased, the construction progress is influenced, the manufacturing cost is increased, and the dismantling is extremely complicated; (2) when the depth of the foundation pit is not large, the inner support easily causes the problems of earth excavation, pouring and dismantling of the supporting beam and the like, if the inner support is cancelled, the rigidity of the wall body is often greatly increased for controlling the deformation of the underground continuous wall, so that the width or the arrangement of the reinforcement of the underground continuous wall is obviously increased, and the construction cost is greatly increased.
The combined support of front wall and back pile is a new double-row support structure capable of replacing the combined support of underground continuous wall and internal support. The front wall and rear pile combined support consists of a front row wall and a front row wall crown beam formed by underground continuous walls, a rear row pile and a rear row pile crown beam formed by reinforced concrete cast-in-place piles arranged according to a certain pile spacing and a member for connecting the front row wall and the rear row pile. The front row wall and the rear row pile can fully exert the effect of jointly resisting horizontal load and controlling deformation by the front row wall and the rear row pile only by forming a portal rigid frame structure. Therefore, the connection of the front row wall and the rear row pile is extremely important for the supporting effect of the front wall and the rear pile combined supporting structure.
Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.
Disclosure of Invention
When the foundation pit support adopts the combined support of the front-row underground continuous wall and the rear-row concrete pouring, the invention provides the beam type connecting structure for the combined support of the front wall and the rear pile, in order to ensure that the front-row wall and the rear pile can form a good rigid frame structure system. By adopting the beam type connecting structure, the rigidity of the rigid frame beam for connecting the front row wall and the rear row pile can be ensured, the bending moment and the shearing force are borne, the reinforcement mode of the rigid frame beam can be greatly simplified, and the construction efficiency is obviously improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the beam type connecting structure for the combined support of the front wall and the rear pile comprises a front row wall, a rear row pile and a rigid frame beam arranged between the front row wall and the rear row pile, wherein a front row wall crown beam is arranged at the top of the front row wall, and a rear row pile crown beam is arranged at the top of the rear row pile; in the width range of the rigid frame beam, the inner side vertical reinforcements of the front row wall are bent along the top of the rigid frame beam, the outer side of the rear row pile crown beam, the bottom of the rigid frame beam and the inner side of the front row wall crown beam to form inner side P-shaped reinforcements of the wall; in the width range of the rigid frame beam, the outer side vertical ribs of the front row wall are bent along the top of the front row wall crown beam and the inner side of the front row wall crown beam to form outer side C-shaped ribs of the wall; on the inner side of the front row wall, the upward bending length of the P-shaped ribs on the inner side of the wall is not less than half of the height of the rigid frame beam, and the downward bending length of the C-shaped ribs on the outer side of the wall is not less than half of the height of the rigid frame beam; in the height range and the width range of the front row wall crown beam, the P-shaped ribs on the inner side of the wall and the C-shaped ribs on the outer side of the wall are transversely connected in the horizontal direction by adopting front row wall tie bars; in the width range of the front row wall crown beam, the part of the inner side P-shaped rib of the wall, which is positioned at the top of the front row wall crown beam, is connected with the part, which is positioned at the bottom of the front row wall crown beam, by adopting a front row wall stirrup; in the rigid frame beam range between the front row wall and the rear row pile, the part of the P-shaped reinforcement on the inner side of the wall, which is positioned at the top of the rigid frame beam, is connected with the part, which is positioned at the bottom of the rigid frame beam, by beam stirrups; a first main rib of a pile of the rear row of piles closest to the front row of walls and a second main rib of a pile of the rear row of piles farthest from the front row of walls are bent downwards after bypassing the upper part of a P-shaped rib on the inner side of the wall at the top of the crown beam of the rear row of piles; the longitudinal ribs of the rest rear row piles on the two sides of the connecting line of the first main rib and the second main rib of the pile are pile L-shaped ribs.
As a preferable mode of the invention, the P-shaped reinforcement on the inner side of the wall includes a first reinforcement section, a second reinforcement section, a third reinforcement section, a fourth reinforcement section and a fifth reinforcement section, which are integrally bent, the first reinforcement section extends from the bottom of the front row wall to the top of the front row wall crown beam, the second reinforcement section extends from the inner side of the top of the front row wall crown beam to the outer side of the top of the rear row pile crown beam, the third reinforcement section extends from the top of the outer side of the rear row pile crown beam to the bottom of the rear row pile crown beam, the fourth reinforcement section extends from the outer side of the bottom of the rear row pile crown beam to the inner side of the front row wall crown beam, and the fifth reinforcement section extends upward from the bottom of the inner side of the front row wall crown beam and is bent downward.
In a preferred embodiment of the present invention, the length of the fifth rib section is greater than half of the height of the rigid frame beam.
As a preferable mode of the present invention, the C-shaped rib on the outer side of the wall includes a sixth rib section, a seventh rib section, and an eighth rib section, which are integrally bent, the sixth rib section extends upward from the bottom of the front wall to the top of the front wall crown beam, the seventh rib section extends inward along the top of the front wall crown beam, and the eighth rib section extends downward from the top of the inner side of the front wall crown beam and is bent upward.
In a preferred embodiment of the present invention, the length of the eighth rib section is greater than half of the height of the rigid frame beam.
As a preferable mode of the present invention, the pile L-shaped ribs are provided in multiple groups, and each group includes two pile L-shaped ribs arranged oppositely.
As a preferable mode of the invention, each group of pile L-shaped ribs are oppositely bent by 90 degrees after the top of the rear row pile crown beam bypasses the P-shaped ribs on the inner side of the wall, the length of the end part of the hook exceeding the connecting line of the first main rib and the second main rib of the pile is not less than 5 times of the diameter of the pile L-shaped ribs, and the pile L-shaped ribs are bound and overlapped after being mutually closed. As a preferable mode of the present invention, the number of the rear row piles is plural, each of the rear row piles is connected to the front row wall through the rigid frame beam, and adjacent rigid frame beams are separated by the ground.
The invention also provides a construction method of the beam type connecting structure jointly supported by the front wall and the rear pile, which comprises the following steps,
A. reserving pile L-shaped ribs, pile first main ribs and pile second main ribs of the rear row of piles as full-length longitudinal ribs, excavating earthwork to the elevation of the bottom of a rigid frame beam at the position of the rigid frame beam according to the size of the rigid frame beam after the construction of the rear row of piles is finished, and chiseling concrete of the rear row of piles within the height range of a crown beam of the rear row of piles;
B. the front row wall is corresponding to the vertical bars within the width range of the rigid frame beam, the P-shaped bars on the inner side of the wall are prefabricated according to the design requirements, the front row wall stirrups and the beam stirrups are sleeved in the front row wall stirrups, the C-shaped bars on the outer side of the wall are bent according to the design requirements, and the manufacturing of the front row wall steel bars is completed;
C. and (3) carrying out groove section excavation construction on the design position of the front row wall, then putting in reinforcing steel bars of the front row wall, adjusting to enable P-shaped reinforcing steel bars on the inner side of the front row wall to be installed on the top of the rear row pile, then bending the pile L-shaped reinforcing steel bars, the pile first main reinforcing steel bars and the pile second main reinforcing steel bars according to the design requirement, and pouring concrete of the front row wall, the front row wall crown beam, the rigid frame beam and the rear row pile crown beam to form a beam type connecting structure.
After adopting above-mentioned structure, two big difficult problems have been solved:
(1) the problem that the front-row underground diaphragm wall and the rear-row grouting piles are rigidly connected by the connecting beams is solved, the rigidity of the rigid frame beam for connecting the front-row wall and the rear-row piles is guaranteed, and the rigid frame beam can bear large bending moment and shearing force.
(2) The complicated reinforcement construction difficult problem of front row wall and back row pile has been solved: because the front row wall adopts the inboard P type muscle of wall to directly be connected front row wall and back row stake, the inboard P type muscle of wall also acts as rigid frame roof beam top atress muscle and bottom atress muscle, need not to dispose rigid frame roof beam atress muscle alone again, has simplified the arrangement of reinforcement mode of rigid frame roof beam greatly. The L-shaped ribs of the piles can effectively restrain the P-shaped ribs on the inner side of the wall, and the stirrups can be omitted. The C-shaped ribs on the outer side of the wall and the L-shaped ribs of the piles can be directly bent on the front row of walls and the rear row of piles by adopting a handheld steel bar bending machine respectively, and construction is convenient. Therefore, the structure remarkably improves the construction efficiency.
Drawings
Fig. 1 is a schematic plane structure diagram of a beam type connecting structure for the combined support of front wall and rear pile according to the invention.
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1 in accordance with the present invention.
In the figure:
Wall inner side P-shaped rib 13 and wall outer side C-shaped rib 14
Front row wall tie 15 front row wall stirrup 16
Rigid frame beam 2 beam stirrup 21
Pile L-shaped rib 33 pile first main rib 34
Pile second main reinforcement 35 first reinforcement section 131
Detailed Description
In order to further explain the technical scheme of the invention, the following detailed description is combined with the accompanying drawings. The inner side of the front row wall 11 refers to the side of the front row wall 11 far away from the rear row piles 31, and the outer side of the front row wall 11 refers to the side of the front row wall 11 close to the rear row piles 31; the inner side of the rear row pile 31 refers to the side of the rear row pile 31 close to the front row wall 11, and the outer side of the rear row pile 31 refers to the side of the rear row pile 31 away from the front row wall 11.
Referring to fig. 1-2, the beam type connecting structure for the combined support of the front wall and the rear pile comprises a rigid frame beam 2, a front row wall 11 and a rear row pile 31, wherein two ends of the rigid frame beam 2 are respectively connected with the front row wall 11 and the rear row pile 31; the top of the front row wall 11 is provided with a front row wall crown beam 12, and the top of the rear row pile 31 is provided with a rear row pile crown beam 32; the rigid frame beam 2, the front row wall 11, the rear row piles 31, the front row wall crown beam 12 and the rear row pile crown beam 32 comprise concrete and reinforcing steel bars arranged in the concrete, the concrete and the reinforcing steel bars are conventional means in the field of construction, the emphasis of the application is not the emphasis of the application, detailed display is not performed here, and the emphasis of the application lies in a connecting structure between supporting structures. In the width range of the rigid frame beam 2, the inner vertical ribs of the front row wall 11 are bent along the top of the rigid frame beam 2, the outer side of the rear row pile crown beam 32, the bottom of the rigid frame beam 2 and the inner side of the front row wall crown beam 12 to form inner wall P-shaped ribs 13; specifically, the P-shaped ribs on the inner side of the wall include a first rib section 131, a second rib section 132, a third rib section 133, a fourth rib section 134 and a fifth rib section 135 which are integrally bent, the first rib section 131 extends from the bottom of the front row wall 11 to the top of the front row wall crown beam 12, the second rib section 132 extends from the inner side of the top of the front row wall crown beam 12 to the outer side of the top of the rear row pile crown beam 32, the third rib section 133 extends from the top of the outer side of the rear row pile crown beam 32 to the bottom of the rear row pile crown beam 32, the fourth rib section 134 extends from the outer side of the bottom of the rear row pile crown beam 32 to the inner side of the bottom of the front row wall crown beam 12, and the fifth rib section 135 extends upwards and bends downwards from the bottom of the inner side of the front row wall crown beam 12. Wherein the length of the fifth rib section 135 is greater than half of the height of the rigid frame beam 2.
Within the width range of the rigid frame beam 2, the outer vertical ribs of the front row wall 11 are bent along the top of the front row wall crown beam 12 and the inner side of the front row wall crown beam 12 to form outer C-shaped ribs 14; specifically, the C-shaped rib on the outer side of the wall includes a sixth rib section 141, a seventh rib section 142 and an eighth rib section 143, which are integrally bent, the sixth rib section 141 extends upward from the bottom of the front wall 12 to the top of the front wall crown beam 12, the seventh rib section 142 extends inward along the top of the front wall crown beam 12, and the eighth rib section 143 extends downward from the top of the inner side of the front wall crown beam 12 and is bent upward, wherein the length of the eighth rib section 143 is greater than half of the height of the rigid frame beam 2.
In the present invention, on the inner side of the front row wall 11, the length of the fifth rib section 135 where the P-shaped rib 13 on the inner side of the wall is bent upward is not less than half of the height of the rigid frame beam 2, and the length of the eighth rib section 143 where the C-shaped rib 14 on the outer side of the wall is bent downward is not less than half of the height of the rigid frame beam 2.
In the range of the height of the front row wall crown beam 12 and the range of the width of the front row wall 11, the wall inner side P-shaped ribs 13 and the wall outer side C-shaped ribs 14 are horizontally and transversely connected by front row wall tie bars 15, and in fig. 2, two groups of upper and lower horizontal front row wall tie bars 15 are shown. Within the width range of the front row wall crown beam 12, the part of the wall inner side P-shaped rib 13 positioned at the top of the front row wall crown beam 12 and the part positioned at the bottom of the front row wall crown beam 12 are connected by a front row wall stirrup 16, and in fig. 2, the upper section and the lower section of five groups of front row wall stirrups 16 are shown. In the range between the front row wall 11 and the rear row pile 31 of the rigid frame beam 2, the part of the P-shaped reinforcement 13 on the inner side of the wall, which is positioned at the top of the rigid frame beam 2, is connected with the part of the rigid frame beam 2, which is positioned at the bottom of the rigid frame beam, by using a beam stirrup 21; the first main reinforcement 34 of the pile closest to the front row of piles 11 and the second main reinforcement 35 of the pile farthest from the rear row of piles 31 are bent downwards after bypassing the top steel bar of the top beam of the rear row of pile crown beams 32; the pile first main reinforcement 34 and the rest of the two sides of the connecting line of the pile second main reinforcement 35 are bent by 90 degrees in the mutual direction according to the corresponding relation and are overlapped to form a pile L-shaped reinforcement 33, and the length of the end part of the hook exceeding the connecting line of the pile first main reinforcement and the pile second main reinforcement is not less than 5 times of the diameter of the pile L-shaped reinforcement.
In order to solve the problems that in a front wall and rear pile combined supporting structure, a front-row underground continuous wall and a rear-row grouting pile are rigidly connected and the reinforcing bar mode of a rigid frame beam is simplified, so that the construction efficiency is obviously improved, the following measures are taken:
firstly, within the width range of the rigid frame beam 2, the inner side vertical reinforcements of the front row wall 11 are bent along the top of the rigid frame beam 2, the outer side of the rear row pile crown beam 32, the bottom of the rigid frame beam 2 and the inner side of the front row wall crown beam 12 to form inner side P-shaped reinforcements 13 of the wall; inside the front row wall 11, the upward bending length of the P-shaped ribs 13 on the inner side of the wall is not less than half of the height of the rigid frame beam 2. The P-shaped ribs 13 on the inner side of the wall are adopted to directly penetrate through the front row wall crown beam 12, the rigid frame beam 2 and the rear row pile crown beam 32, so that the bearing capacity of the rigid frame beam for connecting the front row wall and the rear row pile is ensured, complicated independent reinforcement allocation can be performed on the rigid frame beam instead, and the construction efficiency is improved.
And secondly, the part of the P-shaped rib 13 on the inner side of the wall, which is positioned at the top of the front row wall crown beam 12, is connected with the part of the P-shaped rib, which is positioned at the bottom of the front row wall crown beam 12, by adopting a front row wall stirrup 16, so that the longitudinal stress ribs at the top and the bottom of the rigid frame beam can be effectively restrained, and the bearing capacity and the rigidity of the rigid frame beam are ensured.
The first main reinforcement 34 of the pile closest to the front row wall 11 and the second main reinforcement 35 of the pile farthest from the third and rear row piles 31 are bent downwards after bypassing the top steel bar of the rear row pile crown beam 32; the longitudinal bars of the rest rear rows of piles 31 on the two sides of the connecting line of the first main bar 34 and the second main bar 35 are bent for 90 degrees in a corresponding relation towards the mutual direction to form the L-shaped bar 33 of the pile, and the length of the end part of the hook exceeding the connecting line of the first main bar 34 and the second main bar 35 of the pile is not less than 5 times of the diameter of the L-shaped bar 33 of the pile. The pile L-shaped ribs 33 can effectively restrain the P-shaped ribs 13 on the inner side of the wall at the top, so that the stirrup configuration is omitted, the reinforcement configuration mode is greatly simplified, and the construction efficiency is improved.
The specific construction method comprises the following steps:
(1) the pile L-shaped ribs 33, the pile first main ribs 34 and the pile second main ribs 35 of the rear row piles 31 are reserved as full-length longitudinal ribs, after the rear row piles 31 are constructed, earthwork is excavated to the bottom elevation of the rigid frame beam 2 at the position of the rigid frame beam 2 according to the size of the rigid frame beam 2 within a specified time, and concrete of the rear row piles 31 within the height range of the rear row pile crown beam 32 is chiseled.
(2) The front row wall 11 is corresponding to the vertical bars within the width range of the rigid frame beam 2, the P-shaped bars 13 on the inner side of the wall are prefabricated according to the design requirements, the front row wall stirrups 16 and the beam stirrups 21 are sleeved in the front row wall stirrups, the C-shaped bars 14 on the outer side of the wall are bent according to the design requirements, and the manufacturing of the steel bars of the front row wall 11 is completed.
(3) And (2) carrying out groove section excavation construction on the design position of the front row wall 11, then putting the reinforcing steel bars of the front row wall 11, properly adjusting to enable the P-shaped reinforcing steel bars 13 on the inner side of the wall to be installed at the top of the rear row piles 31, then bending the pile L-shaped reinforcing steel bars 33, the pile first main reinforcing steel bars 34 and the pile second main reinforcing steel bars 35 according to the design requirements, adjusting the rest reinforcing steel bars and binding firmly, and then pouring concrete of the front row wall 11, the front row wall crown beams 12, the rigid frame beams 2 and the rear row pile crown beams 32.
After adopting above-mentioned structure: (1) the P-shaped ribs on the inner side of the front row wall penetrate through the front row wall crown beam 12, the top and the bottom of the rigid frame beam 2 and the rear row pile crown beam 32 to form continuous stress ribs, and the C-shaped ribs on the outer side of the wall are matched with the P-shaped ribs on the inner side of the wall for use, so that the rigidity and the bearing capacity of the rigid frame beam are ensured. (2) The P-shaped ribs on the inner side of the wall are used as the top stress ribs and the bottom stress ribs of the rigid frame beam 2, and the stress ribs of the rigid frame beam 2 do not need to be configured independently; the pile L-shaped ribs 33 can effectively restrain the P-shaped ribs on the inner side of the wall, and the stirrup configuration can be omitted. The reinforcing bar mode of the rigid frame beam is greatly simplified. (3) Wall outside C type muscle can be integrated into one piece when the ligature of front row wall reinforcing bar, and stake L type muscle can adopt handheld angle bending machine direct bending on the back row stake, and it is convenient to be under construction. Therefore, the structure remarkably improves the construction efficiency.
Fig. 1 shows a connection structure of 3 rear row piles 31 and a front row wall 11, each rear row pile 31 is connected with the front row wall 11 through one rigid frame beam 2, the ground 4 is arranged between adjacent rigid frame beams 2, and the right side of a rear row pile crown beam 32 is the ground.
The product form of the present invention is not limited to the embodiments and examples shown in the present application, and any suitable changes or modifications of the similar ideas should be made without departing from the patent scope of the present invention.
Claims (8)
1. Beam type connection structure that stake combination was strutted behind preceding wall, its characterized in that: the pile frame comprises a front row wall, a rear row pile and a rigid frame beam arranged between the front row wall and the rear row pile, wherein the top of the front row wall is provided with a front row wall crown beam, and the top of the rear row pile is provided with a rear row pile crown beam; in the width range of the rigid frame beam, the inner side vertical reinforcements of the front row wall are bent along the top of the rigid frame beam, the outer side of the rear row pile crown beam, the bottom of the rigid frame beam and the inner side of the front row wall crown beam to form inner side P-shaped reinforcements of the wall; in the width range of the rigid frame beam, the outer side vertical ribs of the front row wall are bent along the top of the front row wall crown beam and the inner side of the front row wall crown beam to form outer side C-shaped ribs of the wall; on the inner side of the front row wall, the upward bending length of the P-shaped ribs on the inner side of the wall is not less than half of the height of the rigid frame beam, and the downward bending length of the C-shaped ribs on the outer side of the wall is not less than half of the height of the rigid frame beam; in the height range of the top beam of the front wall and the width range of the front wall, the P-shaped ribs on the inner side of the wall and the C-shaped ribs on the outer side of the wall are transversely connected in the horizontal direction by adopting front wall tie bars; in the width range of the front row wall crown beam, the part of the inner side P-shaped rib of the wall, which is positioned at the top of the front row wall crown beam, is connected with the part, which is positioned at the bottom of the front row wall crown beam, by adopting a front row wall stirrup; in the rigid frame beam range between the front row wall and the rear row pile, the part of the P-shaped rib on the inner side of the wall, which is positioned at the top of the rigid frame beam, is connected with the part, which is positioned at the bottom of the rigid frame beam, by beam stirrups; a first main rib of a pile of the rear row of piles closest to the front row of walls and a second main rib of a pile of the rear row of piles farthest from the front row of walls are bent downwards after bypassing the upper part of a P-shaped rib on the inner side of the wall at the top of the crown beam of the rear row of piles; the longitudinal ribs of the rest rear row piles on the two sides of the connecting line of the first main rib and the second main rib of the pile are pile L-shaped ribs.
2. The beam type connecting structure of the front wall and rear pile combined support as claimed in claim 1, wherein: the inboard P type muscle of wall includes integrative first muscle section, second muscle section, third muscle section, fourth muscle section and the fifth muscle section of buckling and forming, and first muscle section is followed the bottom of front stall wall extends to the top of front stall wall crown roof beam, and the second muscle section is followed the inboard at front stall wall crown roof beam top extends to the outside at back stall pile crown roof beam top, and the third muscle section is followed the top in back stall pile crown roof beam outside extends to the bottom of back stall pile crown roof beam, and the fourth muscle section is followed the outside of back stall pile crown roof beam bottom extends to the inboard of front stall wall crown roof beam, and the fifth muscle section is followed the inboard bottom of front stall wall crown roof beam upwards extends and buckles downwards.
3. The beam type connecting structure of the front wall and rear pile combined support as claimed in claim 2, wherein: and the length of the fifth rib section is greater than half of the height of the rigid frame beam.
4. A beam type connecting structure of a front wall and rear pile combined support as claimed in claim 3, wherein: the wall outside C type muscle includes that an organic whole is buckled sixth muscle section, seventh muscle section and the eighth muscle section that forms, and the sixth muscle section is followed the top that the front stall wall was covered the roof beam is upwards extended to the bottom of front stall wall, and the seventh muscle section extends to the inboard along the top that the front stall wall was covered the roof beam, and the eighth muscle section extends downwards and upwards buckles in the inboard top of front stall wall is covered the roof beam.
5. A beam type connecting structure of a front wall and rear pile combined support as claimed in claim 4, wherein: and the length of the eighth rib section is greater than half of the height of the rigid frame beam.
6. The beam type connecting structure of the front wall and rear pile combined support as claimed in claim 5, wherein: the L-shaped ribs of the piles are multiple groups, and each group comprises two oppositely-arranged L-shaped ribs of the piles.
7. A beam type connecting structure of a front wall and rear pile combined support as claimed in claim 6, wherein: the back row pile is many, every the back row pile passes through rigid frame roof beam is connected to the front wall, and is adjacent the rigid frame roof beam separates through ground.
8. The construction method of a beam type connection structure of a front wall and rear pile combined support as claimed in claim 7, wherein: comprises the following steps of (a) carrying out,
A. reserving pile L-shaped ribs, pile first main ribs and pile second main ribs of the rear row of piles as full-length longitudinal ribs, excavating earthwork to the elevation of the bottom of a rigid frame beam at the position of the rigid frame beam according to the size of the rigid frame beam after the construction of the rear row of piles is finished, and chiseling concrete of the rear row of piles within the height range of a crown beam of the rear row of piles;
B. the front row wall is corresponding to the vertical bars within the width range of the rigid frame beam, the P-shaped bars on the inner side of the wall are prefabricated according to the design requirements, the front row wall stirrups and the beam stirrups are sleeved in the front row wall stirrups, the C-shaped bars on the outer side of the wall are bent according to the design requirements, and the manufacturing of the front row wall steel bars is completed;
C. and (3) carrying out groove section excavation construction on the design position of the front row wall, then putting in reinforcing steel bars of the front row wall, adjusting to enable P-shaped reinforcing steel bars on the inner side of the front row wall to be installed on the top of the rear row pile, then bending the pile L-shaped reinforcing steel bars, the pile first main reinforcing steel bars and the pile second main reinforcing steel bars according to the design requirement, and pouring concrete of the front row wall, the front row wall crown beam, the rigid frame beam and the rear row pile crown beam to form a beam type connecting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164868.4A CN110847192A (en) | 2019-11-25 | 2019-11-25 | Beam type connecting structure for front wall and rear pile combined support and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164868.4A CN110847192A (en) | 2019-11-25 | 2019-11-25 | Beam type connecting structure for front wall and rear pile combined support and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110847192A true CN110847192A (en) | 2020-02-28 |
Family
ID=69604057
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911164868.4A Pending CN110847192A (en) | 2019-11-25 | 2019-11-25 | Beam type connecting structure for front wall and rear pile combined support and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110847192A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203729309U (en) * | 2014-01-24 | 2014-07-23 | 中国建筑股份有限公司 | Support system with combined double-row piles combined with vertical prestressed anchor bolts |
| CN203729308U (en) * | 2014-01-24 | 2014-07-23 | 中国建筑股份有限公司 | Double-row pile supporting system of reinforced concrete pile combined structural steel cement mixing pile wall |
| CN105155548A (en) * | 2015-06-02 | 2015-12-16 | 谢纯 | Cable double-row pile (wall) supporting structure |
| CN105544560A (en) * | 2016-02-03 | 2016-05-04 | 华侨大学 | Beam-type connecting node for special-shaped double-row piles |
| CN212248256U (en) * | 2019-11-25 | 2020-12-29 | 华侨大学 | Beam type connecting structure of front wall and rear pile combined support |
-
2019
- 2019-11-25 CN CN201911164868.4A patent/CN110847192A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203729309U (en) * | 2014-01-24 | 2014-07-23 | 中国建筑股份有限公司 | Support system with combined double-row piles combined with vertical prestressed anchor bolts |
| CN203729308U (en) * | 2014-01-24 | 2014-07-23 | 中国建筑股份有限公司 | Double-row pile supporting system of reinforced concrete pile combined structural steel cement mixing pile wall |
| CN105155548A (en) * | 2015-06-02 | 2015-12-16 | 谢纯 | Cable double-row pile (wall) supporting structure |
| CN105544560A (en) * | 2016-02-03 | 2016-05-04 | 华侨大学 | Beam-type connecting node for special-shaped double-row piles |
| CN212248256U (en) * | 2019-11-25 | 2020-12-29 | 华侨大学 | Beam type connecting structure of front wall and rear pile combined support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210163913U (en) | Asymmetric double-row pile-anchor rod combined supporting structure | |
| CN104878776B (en) | A kind of underground shallow layer automatic parking garage the library structure | |
| CN104878835A (en) | Strip-shaped foundation house rear basement structure | |
| CN202595731U (en) | High-bearing-capacity multistage enlarged bore pile convenient to construct | |
| CN205712122U (en) | A kind of truss-like double-row pile associating suspension roof support system | |
| CN102330436A (en) | Composite retaining structure and composite retaining method for half geotechnical layer ultradeep round spiral flow tank | |
| CN102953385A (en) | Construction method for changing support of foundation pit at irregular place of rampway | |
| CN212248256U (en) | Beam type connecting structure of front wall and rear pile combined support | |
| CN212248255U (en) | Plate-type connecting structure for double-row supporting of front wall rear piles | |
| CN112376603A (en) | Assembly type fan foundation and assembly method thereof | |
| CN204703190U (en) | A kind of underground shallow layer automatic parking garage storehouse body structure | |
| CN103147443A (en) | Foundation pit supporting structure and construction method thereof | |
| CN206337566U (en) | Foundation ditch vertical prestressing anchor pole supporting construction | |
| CN203905036U (en) | Stiff filling core structure of pre-stressed concrete pipe pile | |
| KR20120122024A (en) | Uniting Method of Temporary earth wall with basement exterior Wall using Couplers and Bolts. | |
| CN207062955U (en) | The foundation pit supporting construction that a kind of thick long stake is combined with thin stub | |
| CN110847192A (en) | Beam type connecting structure for front wall and rear pile combined support and construction method thereof | |
| CN211006701U (en) | Foundation pit supporting structure integrating pile and wall | |
| CN214832715U (en) | Balancing beam supporting structure | |
| CN104532852A (en) | Opposite-pull type prestressed pipe pile foundation pit supporting structure and mounting method thereof | |
| CN211113674U (en) | Double-row column supporting structure of foundation pit | |
| CN113404060A (en) | Rigid rib wall type pile wall foundation pit supporting structure and construction method | |
| CN205421332U (en) | Contrary coincide underground continuous wall that does of a core section of thick bamboo | |
| CN110847191A (en) | Plate type connecting structure for double-row supporting of front wall and rear pile and construction method of plate type connecting structure | |
| CN203096746U (en) | Reinforced rib soil restraining composite supporting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |