CN210315575U - Stagnant water envelope of soft soil foundation building foundation ditch - Google Patents
Stagnant water envelope of soft soil foundation building foundation ditch Download PDFInfo
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- CN210315575U CN210315575U CN201920829751.2U CN201920829751U CN210315575U CN 210315575 U CN210315575 U CN 210315575U CN 201920829751 U CN201920829751 U CN 201920829751U CN 210315575 U CN210315575 U CN 210315575U
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- precast concrete
- building foundation
- concrete pile
- foundation ditch
- foundation pit
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Abstract
The utility model discloses a stagnant water envelope of soft soil foundation building foundation ditch, which belongs to the foundation ditch enclosure technical field, and comprises a building foundation ditch, a foundation ditch retaining wall and a clay stagnant water curtain, wherein the foundation ditch retaining wall comprises a plurality of precast concrete piles which are evenly distributed, a plurality of preformed holes are chiseled on the precast concrete piles, a plurality of anchoring holes are chiseled on the side wall of the building foundation ditch, anchor rods are inserted in the preformed holes, one end of the anchor rod close to the building foundation ditch penetrates through the clay stagnant water curtain and extends to the bottom side in the anchoring holes, one side of the precast concrete pile, which is far away from the building foundation ditch, is provided with a Z-shaped reinforcing plate, and the Z-shaped reinforcing plate is fixedly connected with the anchor rods, so that the foundation ditch retaining wall becomes a whole, and the stability of the foundation ditch retaining wall is improved by arranging the anchor rods, thereby improving the supporting and reinforcing effects of the clay waterproof curtain.
Description
Technical Field
The utility model relates to a foundation ditch enclosure technical field, more specifically say, relate to a stagnant water envelope of soft soil foundation building foundation ditch.
Background
In the existing earth excavation engineering of building foundation pits, a continuous wall body is generally formed around the edge of the foundation pit by mutually occluded cement mixing piles or high-pressure jet grouting piles to serve as a waterproof curtain, and the cement mixing piles or the high-pressure jet grouting piles enter a low-permeability clay layer below the foundation pit from the ground downwards so that a waterproof space is formed inside the foundation pit.
The basic construction conditions of the cement mixing pile or the high-pressure jet grouting pile are that the field is flat, the soil body is uniform, the hardness is moderate, and the construction on a slag layer with impurities such as large stones cannot be carried out; in the construction sites of soft soil foundations such as swamps and coastal shoals, clay layers are deep, the terrain is low, the underground water level is high, and when the construction sites are used as construction sites, thicker ballast layers need to be backfilled on the ground where the construction sites are located to increase the elevation of the construction sites, so that conditions are provided for construction. Under the condition, the function of the waterproof curtain is particularly important in the excavation construction process of the building foundation pit. However, cement mixing piles or high-pressure jet grouting piles can hardly be constructed in the field, so that the foundation pit of the soft soil foundation building has no proper waterproof curtain structure.
To solve the above problems, the chinese utility model publication No. CN203755326U discloses a water-stop enclosure structure for a soft soil foundation pit of a foundation structure, which is characterized in that the structure comprises a ballast layer and a groove, the ballast layer is arranged on a soft soil foundation of the foundation pit to be constructed, the thickness of the ballast layer is 2m-6m, the groove is arranged around the edge of the foundation pit to be constructed, the vertical distance from the bottom of the groove to the bottom of the ballast layer is 0.5m-1.0m, a clay water-stop curtain is arranged in the groove, a foundation pit retaining wall is arranged in the clay water-stop curtain, a horizontal support is arranged in the foundation pit enclosed by the foundation pit retaining wall, although the above scheme can realize the water-stop enclosure effect, the stability of the clay water-stop curtain is poorer than that of the traditional continuous wall, the soil of the soft soil is looser, the supporting force is stronger, and no connection effect and continuous support are existed, the side slope protection effect is poor only by means of mutually independent foundation pit retaining walls, once the foundation pit retaining walls are unstable and loose, cracks and even collapse of the whole clay waterproof curtain can be caused, and waterproof and even potential safety hazards are affected.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved
To the problem that exists among the prior art, the utility model aims to provide a stagnant water envelope of soft soil foundation building foundation ditch, it can realize assisting the connection precast concrete pile independent each other for the foundation ditch barricade becomes a whole, and improves the stability of foundation ditch barricade through setting up the stock, and then improves the support and the reinforcement effect to clay stagnant water curtain.
2. Technical scheme
In order to solve the above problems, the utility model adopts the following technical proposal.
A water stop enclosure structure of a soft soil foundation building foundation pit comprises a building foundation pit, a foundation pit retaining wall and a clay water stop curtain, wherein the foundation pit retaining wall comprises a plurality of uniformly distributed precast concrete piles, a plurality of preformed holes are formed in the precast concrete piles, a plurality of anchoring holes are also formed in the side wall of the building foundation pit, anchor rods are inserted in the preformed holes, one end, close to the building foundation pit, of each anchor rod penetrates through the clay water stop curtain and extends to the inner bottom side of each anchoring hole, a Z-shaped reinforcing plate is arranged on one side, away from the building foundation pit, of each precast concrete pile and fixedly connected with the corresponding anchor rods, each Z-shaped reinforcing plate comprises a first connecting part, a main body part and a second connecting part which are integrally formed, the first connecting part, the main body part and the second connecting part are fixedly connected in sequence, and a pair of assembling holes are formed in the first connecting part and the second connecting part, the utility model discloses a concrete waterproof curtain, including assembly hole, reinforcing bolt, Z type gusset plate, anchor bolt, nut, L type limiting plate, Z type gusset plate, bolt, nut, the equal fixedly connected with L type limiting plate in both ends about the precast concrete pile, and Z type gusset plate is located between L type limiting plate and the precast concrete pile, can realize supplementary connection independent precast concrete pile each other for the foundation ditch barricade becomes a whole, and improves the stability of foundation ditch barricade through setting up the stock, and then improves the support and the reinforcement effect to clay waterproof curtain.
Furthermore, the number of preformed holes on the precast concrete pile is three, and three preformed holes evenly distributed are in the intermediate position of precast concrete pile, will concentrate on the centre to the supporting role of precast concrete pile, and overall stability is effectual.
Furthermore, the aperture of the preformed hole is larger than that of the anchoring hole, a first mortar layer is filled in the preformed hole, a second grouting layer is filled in the anchoring hole, and anchoring performance among the anchor rod, the preformed hole and the anchoring hole is improved.
Further, still dig on the building foundation ditch lateral wall and have a plurality of to the locating hole, it has the locating lever to peg graft in the locating hole, and the distance between a pair of locating lever is greater than precast concrete pile's external diameter and is less than the farthest distance between a pair of L type limiting plate, provides the positioning action when precast concrete pile construction, fixes a position precast concrete pile on the one hand, and on the other hand can realize the alignment location between preformed hole and the anchor hole.
Furthermore, precast concrete pile upper end fixedly connected with pile cap, it is a pair of fixedly connected with horizontal connection steel sheet between the pile cap provides the effect of horizontal support.
Furthermore, the front end and the rear end of the Z-shaped reinforcing plate are fixedly connected with three reinforcing ribs which are uniformly distributed, so that the overall mechanical strength and tensile coefficient of the Z-shaped reinforcing plate are improved, and deformation is not easy to occur in force transmission.
Further, it has four evenly distributed's thread groove to cut on the precast concrete stake, thread groove female connection has positioning bolt, equally cut on the Z type gusset plate have four with positioning bolt assorted smooth through-hole, and Z type gusset plate is connected with the precast concrete stake through four positioning bolt, realizes the positioning action to Z type gusset plate through four positioning bolt for precast concrete stake and Z type gusset plate effectively combine into a whole, the transmission of the power of being convenient for.
3. Advantageous effects
Compared with the prior art, the utility model has the advantages of:
(1) this scheme can realize supplementary connection precast concrete pile independent each other for the foundation ditch barricade becomes a whole, and improves the stability of foundation ditch barricade through setting up the stock, and then improves the support and the reinforcement effect to clay water stop curtain.
(2) The number of preformed holes on the precast concrete pile is three, and three preformed holes evenly distributed are in the intermediate position of precast concrete pile, will concentrate on the centre to the supporting role of precast concrete pile, and overall stability is effectual.
(3) The aperture of preformed hole is greater than the aperture of anchor hole, and the preformed hole intussuseption is filled with first mortar layer, and the anchor hole intussuseption is filled with the second slip casting layer, improves the anchor nature between stock and preformed hole and the anchor hole.
(4) Still dig on the building foundation ditch lateral wall and have a plurality of to the locating hole, it has the locating lever to peg graft in the locating hole, and the distance between a pair of locating lever is greater than precast concrete pile's external diameter and is less than the farthest distance between a pair of L type limiting plate, provides the positioning action when precast concrete pile construction, and on the one hand fixes a position precast concrete pile, and on the other hand can realize the alignment location between preformed hole and the anchor hole.
(5) The upper end of the precast concrete pile is fixedly connected with a pile cap, and a horizontal connecting steel plate is fixedly connected between a pair of pile caps to provide a horizontal supporting effect.
(6) The front end and the rear end of the Z-shaped reinforcing plate are fixedly connected with three reinforcing ribs which are uniformly distributed, the overall mechanical strength and the tensile coefficient of the Z-shaped reinforcing plate are improved, and deformation is not easy to occur during force transmission.
(7) The precast concrete pile is provided with four thread grooves which are uniformly distributed, the thread grooves are internally threaded with positioning bolts, the Z-shaped reinforcing plate is also provided with four smooth through holes matched with the positioning bolts, the Z-shaped reinforcing plate is connected with the precast concrete pile through the four positioning bolts, and the positioning effect on the Z-shaped reinforcing plate is realized through the four positioning bolts, so that the precast concrete pile and the Z-shaped reinforcing plate are effectively combined into a whole, and the force is convenient to transfer.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 2;
fig. 3 is a front view of a portion of the present invention;
FIG. 4 is a schematic structural view of a precast concrete pile part of the present invention;
fig. 5 is a schematic structural view of the pair of Z-shaped reinforcing plate portions of the present invention when they are connected.
The reference numbers in the figures illustrate:
the concrete pile comprises 1 precast concrete pile, 2 clay waterproof curtains, 3 anchor rods, 4 pile caps, 5 preformed holes, 6 anchoring holes, 7Z-shaped reinforcing plates, 8 reinforcing bolts, 9L-shaped limiting plates, 10 positioning rods, 11 horizontal connecting steel plates and 12 reinforcing ribs.
Detailed Description
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention; obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a water-stopping enclosure structure for a soft soil foundation building foundation pit comprises a building foundation pit, a foundation pit retaining wall and a clay water-stopping curtain 2, wherein the foundation pit retaining wall comprises a plurality of precast concrete piles 1 which are uniformly distributed, a plurality of preformed holes 5 are drilled on the precast concrete piles 1, the preformed holes 5 are reserved during prefabrication, a plurality of anchoring holes 6 are also drilled on the side wall of the building foundation pit, a down-the-hole impact type drilling machine is used for drilling and cleaning, anchor rods 3 are inserted into the preformed holes 5, one ends of the anchor rods 3, which are close to the building foundation pit, penetrate through the clay water-stopping curtain 2 and extend to the inner bottom side of the anchoring holes 6, the number of the preformed holes 5 on the precast concrete piles 1 is three, the three preformed holes 5 are uniformly distributed in the middle positions of the precast concrete piles 1, the supporting effect on the precast concrete piles 1 is centralized in the middle, the overall stability effect is good, the aperture of the preformed holes 5 is larger than, the preformed hole 5 is filled with a first mortar layer, the anchoring hole 6 is filled with a second grouting layer, grouting is carried out by adopting a grouting machine, the anchoring performance between the anchor rods 3 and the preformed hole 5 and the anchoring hole 6 is improved, one side of the precast concrete pile 1, which is far away from the building foundation pit, is provided with a Z-shaped reinforcing plate 7, which plays a role in supporting the precast concrete pile 1, the Z-shaped reinforcing plate 7 is fixedly connected with a plurality of anchor rods 3, particularly in a welding mode, the Z-shaped reinforcing plate 7 comprises a first connecting part, a main part and a second connecting part which are integrally formed, the first connecting part, the main part and the second connecting part are sequentially and fixedly connected, please refer to figure 5, a pair of assembly holes are respectively chiseled on the first connecting part and the second connecting part, reinforcing bolts 8 are inserted in the assembly holes, nuts are connected with the reinforcing bolts 8 through threads, and a pair of reinforcing bolts 8 and nuts are connected between the adjacent Z-shaped reinforcing plates 7, a plurality of Z-shaped reinforcing plates 7 are connected into a whole, force transmission is facilitated, integral support for the foundation pit retaining wall is achieved, pile caps 4 are fixedly connected to the upper ends of the precast concrete piles 1, and horizontal connecting steel plates 11 are fixedly connected between the pair of pile caps 4, so that the effect of horizontal support is achieved.
Referring to fig. 3, the left and right ends of the precast concrete pile 1 are fixedly connected with L-shaped limiting plates 9, the Z-shaped reinforcing plate 7 is located between the L-shaped limiting plate 9 and the precast concrete pile 1, the L-shaped limiting plate 9 plays a role in limiting the Z-shaped reinforcing plate 7, the Z-shaped reinforcing plate 7 also plays a supporting role when being installed, a plurality of pairs of positioning holes are also dug on the side wall of the building foundation pit, positioning rods 10 are inserted in the positioning holes, and the distance between the pair of positioning rods 10 is greater than the outer diameter of the precast concrete pile 1 and less than the farthest distance between the pair of L-shaped limiting plates 9, namely, the precast concrete pile 1 is aligned with a gap between a pair of positioning rods 10 during construction, and is descended until the L-shaped limiting plate 9 is contacted with the positioning rods 10 and can not fall down, provide the positioning action when precast concrete pile 1 is under construction, fix a position precast concrete pile 1 on the one hand, on the other hand can realize the alignment location between preformed hole 5 and the anchor hole 6.
Referring to fig. 4, the front and rear ends of the Z-shaped reinforcing plate 7 are fixedly connected with three reinforcing ribs 12 which are uniformly distributed, so that the mechanical strength and the tensile strength of the whole Z-shaped reinforcing plate 7 are improved, deformation is not easy to occur during force transmission, the prefabricated concrete pile 1 is provided with four threaded grooves which are uniformly distributed, the threaded grooves are internally threaded with positioning bolts, the Z-shaped reinforcing plate 7 is also provided with four smooth through holes which are matched with the positioning bolts, the Z-shaped reinforcing plate 7 is connected with the prefabricated concrete pile 1 through the four positioning bolts, and the positioning function of the Z-shaped reinforcing plate 7 is realized through the four positioning bolts, so that the prefabricated concrete pile 1 and the Z-shaped reinforcing plate 7 are effectively combined into a whole, and force transmission is facilitated.
When in use, the clay waterproof curtain 2 plays a role in stopping water in a building foundation pit, the foundation pit retaining wall plays a role in enclosing the building foundation pit, the construction sequence is that the clay waterproof curtain 2 is constructed after the foundation pit retaining wall is constructed, a plurality of Z-shaped reinforcing plates 7 are mutually connected into a whole through reinforcing bolts 8 and nuts to play a role in supporting and stabilizing the foundation pit retaining wall, and also play a role in partially reinforcing the clay waterproof curtain 2, the limiting function of the Z-shaped reinforcing plates 7 and the anchoring function of the anchor rods 3 are matched together to realize the supporting function and the stabilizing function on the precast concrete pile 1 when viewed integrally, the clay waterproof curtain 2 and the precast concrete pile 1 form a whole, the precast concrete pile 1 and the building foundation pit form a whole, the force transmission is convenient, the phenomenon that the crack or the collapse of the clay waterproof curtain 2 caused by the looseness of the precast concrete pile 1 is not easy to occur, make the stagnant water effect of realization that clay stagnant water curtain 2 can be normally stable to building foundation ditch, compare with prior art, the utility model discloses can realize supplementary connection independent precast concrete pile 1 each other for the foundation ditch barricade becomes a whole, and improves the stability of foundation ditch barricade through setting up stock 3, and then improves the support and the reinforcement effect to clay stagnant water curtain 2.
The above description is only the preferred embodiment of the present invention; the scope of the present invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by replacing or changing the technical solution and the improvement concept of the present invention with equivalents and modifications within the technical scope of the present invention.
Claims (7)
1. The utility model provides a stagnant water envelope of soft soil foundation building foundation ditch, includes building foundation ditch, foundation ditch barricade and clay stagnant water curtain (2), its characterized in that: the foundation pit retaining wall comprises a plurality of uniformly distributed precast concrete piles (1), a plurality of preformed holes (5) are drilled in the precast concrete piles (1), a plurality of anchoring holes (6) are also drilled in the side wall of the building foundation pit, anchor rods (3) are inserted in the preformed holes (5), one ends of the anchor rods (3) close to the building foundation pit penetrate through the clay waterproof curtain (2) and extend to the inner bottom side of the anchoring holes (6), one sides, far away from the building foundation pit, of the precast concrete piles (1) are provided with Z-shaped reinforcing plates (7), the Z-shaped reinforcing plates (7) are fixedly connected with the anchor rods (3), each Z-shaped reinforcing plate (7) comprises a first connecting part, a main body part and a second connecting part which are integrally formed, the first connecting part, the main body part and the second connecting part are fixedly connected in sequence, and a pair of assembly holes are drilled in the first connecting part and the second connecting part, insert in the assembly hole and be equipped with reinforcing bolt (8), threaded connection has the nut on reinforcing bolt (8), and connects through a pair of reinforcing bolt (8) and nut between an adjacent pair of Z type gusset plate (7), equal fixedly connected with L type limiting plate (9) in both ends about precast concrete pile (1), and Z type gusset plate (7) are located between L type limiting plate (9) and precast concrete pile (1).
2. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: the number of the preformed holes (5) on the precast concrete pile (1) is three, and the three preformed holes (5) are uniformly distributed in the middle of the precast concrete pile (1).
3. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: the aperture of preformed hole (5) is greater than the aperture of anchor hole (6), preformed hole (5) intussuseption is filled with first mortar layer, anchor hole (6) intussuseption is filled with the second slip casting layer.
4. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: still dig a plurality of pairs of locating holes on the building foundation ditch lateral wall, it has locating lever (10) to peg graft in the locating hole, and the distance between a pair of locating lever (10) is greater than the external diameter of precast concrete pile (1) and is less than the farthest distance between a pair of L type limiting plate (9).
5. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: the prefabricated concrete pile is characterized in that a pile cap (4) is fixedly connected to the upper end of the prefabricated concrete pile (1), and a horizontal connecting steel plate (11) is fixedly connected between the pile caps (4).
6. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: the front end and the rear end of the Z-shaped reinforcing plate (7) are fixedly connected with three reinforcing ribs (12) which are uniformly distributed.
7. The water stop envelope structure of soft soil foundation building foundation pit of claim 1, characterized in that: the precast concrete pile is characterized in that four thread grooves which are uniformly distributed are formed in the precast concrete pile (1), positioning bolts are connected to the thread grooves in an internal thread mode, four smooth through holes matched with the positioning bolts are formed in the Z-shaped reinforcing plate (7) in an opened mode, and the Z-shaped reinforcing plate (7) is connected with the precast concrete pile (1) through the four positioning bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829751.2U CN210315575U (en) | 2019-06-04 | 2019-06-04 | Stagnant water envelope of soft soil foundation building foundation ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920829751.2U CN210315575U (en) | 2019-06-04 | 2019-06-04 | Stagnant water envelope of soft soil foundation building foundation ditch |
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| Publication Number | Publication Date |
|---|---|
| CN210315575U true CN210315575U (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920829751.2U Expired - Fee Related CN210315575U (en) | 2019-06-04 | 2019-06-04 | Stagnant water envelope of soft soil foundation building foundation ditch |
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| Country | Link |
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| CN (1) | CN210315575U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789802A (en) * | 2021-08-10 | 2021-12-14 | 罗荣 | Clay waterproof curtain wall |
| CN114753373A (en) * | 2022-04-13 | 2022-07-15 | 武汉国机岩土工程有限责任公司 | Construction method of water-stopping enclosure structure of soft soil foundation building foundation pit |
-
2019
- 2019-06-04 CN CN201920829751.2U patent/CN210315575U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113789802A (en) * | 2021-08-10 | 2021-12-14 | 罗荣 | Clay waterproof curtain wall |
| CN114753373A (en) * | 2022-04-13 | 2022-07-15 | 武汉国机岩土工程有限责任公司 | Construction method of water-stopping enclosure structure of soft soil foundation building foundation pit |
| CN114753373B (en) * | 2022-04-13 | 2022-11-11 | 武汉国机岩土工程有限责任公司 | Construction method of water-stopping enclosure structure of soft soil foundation building foundation pit |
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Granted publication date: 20200414 Termination date: 20210604 |