CN212561534U - Earth-rock binary foundation pit support structure for coastal rich water environment - Google Patents
Earth-rock binary foundation pit support structure for coastal rich water environment Download PDFInfo
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- CN212561534U CN212561534U CN202020296390.2U CN202020296390U CN212561534U CN 212561534 U CN212561534 U CN 212561534U CN 202020296390 U CN202020296390 U CN 202020296390U CN 212561534 U CN212561534 U CN 212561534U
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Abstract
The utility model provides a soil rock binary foundation ditch retaining structure for facing sea rich water environment, including the foundation ditch main part, be equipped with soil layer retaining structure around its upper portion, soil layer retaining structure includes: meat-bearing piles, water-stopping steel plates and meat-bearing pile connecting plates; the top end of the meat pile is provided with a crown beam, the pile foot of the meat pile is provided with a lock foot beam, the lock foot beam is arranged between the soil layer enclosure structure and the side wall, the outer wall of the side wall is provided with a rock stratum enclosure structure, and the upper part of the rock stratum enclosure structure is connected with the lock foot beam; meat pile connecting plates are embedded into the side walls of the meat piles and fixedly connected with the meat piles, and two adjacent meat pile connecting plates are hermetically connected through a water stop steel plate. The utility model discloses a meat stake and stagnant water steel sheet constitution soil layer envelope to be provided with rock stratum envelope through the lock foot roof beam in its bottom, in the well metaplasia rock stratum of rock stratum envelope embedding, make envelope squeeze into the foundation ditch bottom, solved the foundation ditch construction difficult problem under the soil rock binary geological conditions who faces the sea rich water region that is in the hydrology condition complicacy, realized foundation ditch enclosure and manger plate water proof effect.
Description
Technical Field
The utility model relates to a foundation ditch construction technical field especially relates to a soil rock binary foundation ditch retaining structure for facing sea rich water environment.
Background
In recent years, along with the rapid development of cities, traffic pressure is continuously increased, and underground spaces are continuously developed and utilized, so that a large number of civil air defense projects, subway projects and tunnel projects are built. And some are in the environment of the rich water and the soft lower hard rock stratum near the sea with complicated hydrological conditions, if the existing supporting mode is adopted, the enclosure structure is difficult to be driven into the bottom of the foundation pit, the supporting mode is often not economical and reasonable enough, the construction progress is influenced, the existing enclosure pile structure is adopted, the water retaining and isolating effect is poor, the waterproof requirement of the foundation pit cannot be effectively met, and potential risks and hidden dangers are caused to the safety of engineering.
SUMMERY OF THE UTILITY MODEL
The utility model provides a soil rock binary foundation ditch retaining structure for facing sea rich water environment to solve above-mentioned technical problem.
The utility model provides a soil rock binary foundation ditch retaining structure for facing rich water environment in sea, including the foundation ditch main part, the foundation ditch main part includes roof, bottom plate and sets up the side wall in the side, the bottom plate is provided with the bottom plate waterproof layer, its characterized in that, be equipped with soil layer retaining structure all around on foundation ditch main part upper portion, soil layer retaining structure includes: meat-bearing piles, water-stopping steel plates and meat-bearing pile connecting plates; the top end of the meat pile is provided with a crown beam, the pile foot of the meat pile is provided with a foot locking beam, the foot locking beam is arranged between the soil layer enclosure structure and the side wall, the outer wall of the side wall is provided with a rock stratum enclosure structure, and the upper part of the rock stratum enclosure structure is connected with the foot locking beam;
the meat pile connecting plates are embedded into the side walls of the meat piles and fixedly connected with the meat piles, and two adjacent meat pile connecting plates are hermetically connected through water stop steel plates.
Further, the formation enclosure comprises:
the steel pipe pile is arranged on the outer wall of the side wall; the top end of the steel pipe pile is connected with the lock leg beam;
and a rock stratum anchor rod anchored to the lower part of the periphery of the foundation pit main body.
Further, still include: the continuous wall is arranged on the periphery of the soil layer enclosure structure, and the depth of the continuous wall below the earth surface is larger than that of the foundation pit main body.
Further, still include: the high-pressure jet grouting water stopping pile is arranged between the soil layer and the rock stratum and is in contact connection with the side wall of the meat-type pile.
Further, the soil layer envelope still includes: and the end part of the foot locking anchor cable is fixedly connected with the foot locking beam in an anchoring manner.
Furthermore, a first hook and a second hook which are mutually clamped are respectively arranged on the meat pile connecting plate and the water stop steel plate; sealing rubber strips are fixed on the side edges of the first hook and the second hook which are clamped with each other, and gaps between the first hook and the second hook are filled with waterproof expansion resin.
Further, the depth a of the meat pile connecting plate embedded into the meat pile is 150 mm; the center distance b between adjacent meat piles is 1800 mm; the radius c of the meat pilings is 500 mm.
Further, still include: a dewatering well and a water level observation well; the dewatering well is arranged between the high-pressure jet grouting water stop pile and the continuous wall; the water level observation well is arranged on the outer side of the continuous wall.
The utility model discloses a meat stake combines together with the stagnant water steel sheet and constitutes soil layer envelope to imbed its bottom into after the certain degree of depth of stroke gasification rock stratum and adopt the lock foot anchor rope to fix the rock stratum and can control its bottom displacement through lock foot roof beam with its bottom, rock stratum envelope sets up the steel-pipe pile, and squeeze into the foundation ditch bottom, solved the construction difficult problem of foundation ditch under the soil rock binary geological conditions that faces the sea rich water region that is in the hydrology condition complicacy, realized foundation ditch enclosure and manger plate water proof effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is an overall schematic view of a fender post structure according to an embodiment of the present invention;
fig. 2 is an enlarged view of a in fig. 1 according to an embodiment of the present invention;
fig. 3 is a top view of a fender post structure according to an embodiment of the present invention;
fig. 4 is an enlarged view of B in fig. 3 according to the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model provides a soil rock binary foundation ditch envelope for facing rich water environment in sea, as shown in fig. 1 and fig. 2, including foundation ditch main part 1, foundation ditch main part 1 includes roof 1.1, bottom plate 1.2 and sets up side wall 1.3 in the side, bottom plate 1.2 is provided with the bottom plate waterproof layer 19 that prevents from the infiltration of foundation ditch bottom, be equipped with soil layer envelope around foundation ditch main part 1 upper portion for the area that the foundation ditch is located soil layer 3 is enclosed and is waterproof, the top of soil layer envelope is equipped with crown beam 6, crown beam 6 plays in the work progress and links together all soil layer envelopes in this embodiment, in order to prevent that foundation ditch top edge from collapsing and acting on; and a foot locking beam 11 is arranged below the soil layer enclosing structure, and the foot locking beam 11 is arranged between the soil layer enclosing structure and the side wall 1.3.
A rock stratum enclosure structure is arranged on the outer wall of the side wall 1.3, and the upper part of the rock stratum enclosure structure is connected with the lock leg beam 11; as shown in fig. 4, the soil envelope comprises: a meat pile 7, a water stop steel plate 9 and a meat pile connecting plate 10; the meat pile connecting plates 10 are embedded into the side walls of the meat piles 7 and fixedly connected with the meat piles 7, and two adjacent meat pile connecting plates 10 are connected through a water stop steel plate 9; the foot locking beam 11 is fixedly connected with the side wall below the meat pile 7. The rock strata envelope includes: the steel pipe pile 14 is arranged on the outer wall of the side wall 1.3; the top end of the steel pipe pile 14 is connected with the foot locking beam 11, the steel pipe pile 14 is located on the rock stratum 4, and the part of the foundation pit located on the rock stratum layer is protected and waterproof; the rock stratum anchor rod 13 is anchored to the lower part around the foundation pit main body 1 at the steel pipe pile 14, and the steel pipe pile 14 is attached to the side wall of the foundation pit.
Further, in order to stably use the excavated foundation pit for a long time, the soil layer enclosure structure is provided with the pit outer continuous walls 16 at the periphery, and the depth of the continuous walls 16 below the earth surface is larger than that of the foundation pit main body 1, so that the whole foundation pit is protected.
Furtherly, in order to realize near the easy secondary waterproof of the water spot suddenly of foundation ditch, still include high-pressure jet grouting water-stopping pile 15, high-pressure jet grouting water-stopping pile 15 is located soil layer 3 and 4 junctures of stratum rock are a plurality of high-pressure jet grouting water-stopping pile 15 is with a plurality of meat stake 7 lateral wall contact is connected.
Further, the soil layer envelope still includes: the foot locking anchor cable 12 is anchored with the soil layer envelope structure; the whole embedded weathered rock stratum of the fender post structure is not less than 2m, and a rock shoulder 19 with a certain width is reserved below the rock embedding surface of the fender post structure for supporting, but due to the limitation of the surrounding space environment of a foundation pit, the width of the rock shoulder 19 cannot be too large, so that the embedding and fixing force of the rock shoulder can provide the passive soil pressure of the pile bottom, and therefore, a foot locking beam 11 and a prestressed anchor cable 12 are arranged below the fender post structure to control the fender post structure not to generate horizontal displacement; the end part of the lock leg anchor cable 12 is connected with the lock leg beam 11 in an anchoring mode.
Further, in order to effectively prevent water inside the foundation pit, a first hook 10.1 and a second hook 9.1 which are mutually clamped and connected are respectively arranged on the meat pile connecting plate 10 and the water stop steel plate 9; sealing rubber strips are fixed on the side edges of the first hook 10.1 and the second hook 9.1 which are clamped with each other, and gaps between the first hook 10.1 and the second hook 9.1 are filled with waterproof expansion resin.
Further, in order to ensure the overall stability of the fender post structure, the depth a of the meat post connecting plate 10 embedded into the meat post 7 is 150 mm; the center distance b between adjacent meat piles 7 is 1800 mm; the radius c of the meat pilings 7 is 500 mm.
Further, in order to ensure that the foundation pit also comprises a dewatering well 17 and a water level observation well 18 in the excavation process; the dewatering well 17 is arranged between the high-pressure jet grouting water stop pile 15 and the continuous wall 16, so that the water level around the foundation pit in the excavation process is ensured to meet the construction requirement; the water level observation well 18 is arranged on the outer side of the continuous wall 16, and water level change in the water level observation well 18 is observed in real time so as to avoid adverse effects caused by foundation pit precipitation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The utility model provides a soil rock binary foundation ditch retaining structure for facing rich water environment in sea which characterized in that, includes foundation ditch main part (1), foundation ditch main part (1) includes roof (1.1), bottom plate (1.2) and sets up side wall (1.3) in the side, bottom plate (1.2) are provided with bottom plate waterproof layer (19), be equipped with soil layer retaining structure around foundation ditch main part (1) upper portion, soil layer retaining structure includes: a meat pile (7), a water stop steel plate (9) and a meat pile connecting plate (10); a crown beam (6) is arranged at the top end of the meat pile (7), a foot locking beam (11) is arranged at the foot of the meat pile (7), the foot locking beam (11) is arranged between the soil layer enclosure structure and the side wall (1.3), a rock stratum enclosure structure is arranged on the outer wall of the side wall (1.3), and the upper part of the rock stratum enclosure structure is connected with the foot locking beam (11);
the meat pile connecting plates (10) are embedded into the side walls of the meat piles (7) and fixedly connected with the meat piles (7), and two adjacent meat pile connecting plates (10) are hermetically connected through water stop steel plates (9).
2. The dual earth-rock foundation pit enclosure for coastal rich water environment of claim 1, wherein the rock formation enclosure comprises:
the steel pipe pile (14) is arranged on the outer wall of the side wall (1.3); the top end of the steel pipe pile (14) is connected with the lock leg beam (11);
and a rock stratum anchor rod (13) anchored towards the lower part of the periphery of the foundation pit main body (1).
3. The earth-rock binary foundation pit enclosure structure for the coastal rich water environment of claim 1, further comprising: the continuous wall (16) is arranged on the periphery of the soil layer building envelope, and the depth of the continuous wall (16) below the earth surface is larger than that of the foundation pit main body (1).
4. The earth-rock binary foundation pit enclosure structure for the coastal rich water environment of claim 3, further comprising: high-pressure jet grouting water stopping pile (15), high-pressure jet grouting water stopping pile (15) is located soil layer (3) and rock stratum (4) juncture, it is a plurality of high-pressure jet grouting water stopping pile (15) and a plurality of meat stake (7) lateral wall contact is connected.
5. The earth-rock binary foundation pit envelope for coastal rich water environment of claim 1, characterized in that, the soil layer envelope further comprises: and the end part of the foot locking anchor rope (12) is in anchoring connection with the foot locking beam (11).
6. The earth-rock binary foundation pit support structure for the coastal rich water environment as claimed in claim 1, wherein the meat pile connecting plate (10) and the water stop steel plate (9) are respectively provided with a first hook (10.1) and a second hook (9.1) which are mutually clamped; sealing rubber strips are fixed on the side edges of the first hook (10.1) and the second hook (9.1) which are clamped with each other, and gaps between the first hook (10.1) and the second hook (9.1) are filled with waterproof expansion resin.
7. The earth-rock binary foundation pit support structure for the coastal water-rich environment as claimed in claim 6, wherein the depth a of the meat-pile connecting plate (10) embedded in the meat pile (7) is 150 mm; the center distance b between adjacent meat piles (7) is 1800 mm; the radius c of the meat pile (7) is 500 mm.
8. The earth-rock binary foundation pit enclosure structure for the coastal rich water environment as claimed in claim 4, further comprising a dewatering well (17) and a water level observation well (18); the dewatering well (17) is arranged between the high-pressure jet grouting water stop pile (15) and the continuous wall (16); the water level observation well (18) is arranged outside the continuous wall (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020296390.2U CN212561534U (en) | 2020-03-11 | 2020-03-11 | Earth-rock binary foundation pit support structure for coastal rich water environment |
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| CN202020296390.2U CN212561534U (en) | 2020-03-11 | 2020-03-11 | Earth-rock binary foundation pit support structure for coastal rich water environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854245A (en) * | 2021-03-17 | 2021-05-28 | 山东大学 | Classification design method for earth rock foundation pit support based on depth and medium-stroke fossil rock burial depth |
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- 2020-03-11 CN CN202020296390.2U patent/CN212561534U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112854245A (en) * | 2021-03-17 | 2021-05-28 | 山东大学 | Classification design method for earth rock foundation pit support based on depth and medium-stroke fossil rock burial depth |
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