CN212641530U

CN212641530U - A prevention come-up device for underground space construction

Info

Publication number: CN212641530U
Application number: CN202021133787.6U
Authority: CN
Inventors: 蔡岳松; 程军波; 沈逸均; 范银琴; 严邵峰; 李于挺; 邵海斌
Original assignee: Ningbo Construction Jianle Engineerign Co ltd
Current assignee: Ningbo Construction Jianle Engineerign Co ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2021-03-02
Anticipated expiration: 2030-06-18

Abstract

The utility model relates to a prevention come-up technical field of underground space construction, and disclose a prevention come-up device for underground space construction, including the bottom plate concrete, the sump pit has been seted up at the top of bottom plate concrete, the left inner wall fixed mounting of sump pit has the immersible pump, the bottom intercommunication of immersible pump has the drinking-water pipe. This a prevention floating device for underground space construction, during basement construction, effective precipitation measure should be taken, the groundwater level drops to below 500mm of the minimum elevation in basement bottom, in order to guarantee structural safety, through before the construction of bottom plate concrete, pre-buried zinc-plated steel casing pipe of taking the stagnant water ring, the zinc-plated steel casing pipe below the bottom plate concrete punches, the outsourcing is strained water cloth, set up cobble drainage district simultaneously, the bottom plate concrete is stretched out to upper portion, when the groundwater level is higher, peripheral groundwater passes through the pressure influence, can discharge bottom plate department through zinc-plated steel casing pipe, then discharge the bottom plate concrete open water to the off-site behind the sump.

Description

A prevention come-up device for underground space construction

Technical Field

The utility model relates to a prevention come-up technical field of underground space construction specifically is a prevention come-up device for underground space construction.

Background

Along with the enlargement of cities, the urbanization process is accelerated, land resources are scarce, underground spaces are continuously developed to meet the living and production requirements of people, the utilization of the underground spaces by a large number of underground buildings (structures) such as high-rise buildings with basements, underground garages, sunken squares, subways and underground shopping malls is continuously developed towards the depth direction, and the basements float upwards due to the buoyancy of underground water in coastal cities with abundant water in underground soil layers, so that the anti-floating problem of the basements is increasingly prominent.

The traditional method comprises the anti-pulling structural design, such as the arrangement of anti-pulling piles, or the piling and back pressure, the earth backfill on the upper part of the top plate of the basement, or the dead weight of the ground structure to resist the buoyancy, the construction method comprises the steps of uninterruptedly draining water, such as the adoption of a dewatering well and a water pump, or the non-sealing of a post-cast zone of the underground space, or the special conditions, such as severe weather of typhoon, rainstorm and the like, filling water into the basement for back pressure to resist the buoyancy, or the piling and loading on the upper part of the underground space in advance, the anti-pulling pile design in the method is to be perfected, the design and the construction are disconnected, for example, the design calculation force of the anti-pulling force of the prestressed pipe pile is required, the anti-pulling effect of the actual building structure is not good, a plurality of accidents caused by the upward floating of the underground space occur, the structural construction and, the method has the advantages that the post-cast strip for sealing the underground space structure is closed, progress lag is caused, the post-cast strip is difficult to protect, reserved steel bars and steel plate water stops are corroded, and later-stage garbage cleaning is difficult.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a prevention come-up device for underground space construction possesses anti effectual and with low costs advantage of floating, has solved the problem with high costs and poor effect that exists in the traditional anti measure of floating.

(II) technical scheme

For the purpose of realizing above-mentioned anti effectual and with low costs of floating, the utility model provides a following technical scheme: the utility model provides a prevention come-up device for underground space construction, includes the bottom plate concrete, the sump pit has been seted up at the top of bottom plate concrete, the left inner wall fixed mounting of sump pit has the immersible pump, the bottom intercommunication of immersible pump has the drinking-water pipe, the top intercommunication of immersible pump has one end to run through and extend to the outlet pipe at bottom plate concrete top, the zinc-plated steel casing pipe that the top fixedly connected with one end of bottom plate concrete runs through and extends to bottom plate concrete bottom, the periphery wall fixedly connected with of zinc-plated steel casing pipe is located the inside stagnant water ring of bottom plate concrete, the top movable mounting of zinc-plated steel casing pipe has the movable cover plate, the bottom of zinc-plated steel casing pipe periphery wall is seted up the limbers that quantity is a plurality of, the bottom cover of zinc-plated steel casing pipe is equipped with the water filtering cloth, the.

Preferably, the top of the bottom plate concrete is provided with a circular through hole, and the size of the circular through hole is matched with that of the water outlet pipe.

Preferably, the shape of the water stop ring is annular with an inner circle and an outer square, and the galvanized steel sleeve is vertical to the top of the bottom plate concrete.

Preferably, the water stop ring is perpendicular to the galvanized steel sleeve, and a plurality of water through holes are uniformly arranged on the outer peripheral wall of the galvanized steel sleeve at equal intervals.

Preferably, the water stop ring is welded with the galvanized steel sleeve, and the vertical section of the water collecting pit is rectangular.

Preferably, one end of the right side of the water collecting pit is fixedly connected with a galvanized steel sleeve penetrating through and extending to the inside of the water collecting pit, the outer peripheral wall of the galvanized steel sleeve is fixedly connected with a water stop ring positioned inside the side wall of the water collecting pit, and the right side of the galvanized steel sleeve is fixedly connected with a pebble water filtering area.

(III) advantageous effects

Compared with the prior art, the utility model provides a prevention come-up device for underground space construction possesses following beneficial effect:

the upward floating prevention device for underground space construction is characterized in that effective precipitation measures are adopted during basement construction, the underground water level is reduced to be below 500mm of the lowest elevation of the bottom of a basement so as to ensure the structural safety, a galvanized steel sleeve with a water stop ring is pre-embedded before bottom plate concrete construction, the galvanized steel sleeve below the bottom plate concrete is perforated, water filtering cloth is externally coated, a pebble water filtering area is arranged at the same time, the upper part of the pebble water filtering area extends out of the bottom plate concrete, when the underground water level is higher, peripheral underground water can be discharged to the bottom plate through the galvanized steel sleeve under the influence of pressure, then open water of the bottom plate concrete is discharged to a water collecting pit and then discharged out of a field, and the whole scheme aims at that the design of the upward floating prevention measures are not completely formed in the construction stage, and under the condition that a later pouring zone of the basement needs to be sealed in advance, the minimum construction cost is input, and.

Drawings

FIG. 1 is a schematic structural view of example 1;

fig. 2 is a schematic structural view of embodiment 2.

In the figure: the water-saving water-filtering device comprises 1 bottom plate concrete, 2 water-filtering cloth, 3 limber holes, 4 pebble water-filtering areas, 5 water-stopping rings, 6 galvanized steel sleeves, 7 movable cover plates, 8 water collecting pits, 9 water outlet pipes, 10 submersible pumps and 11 water pumping pipes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Embodiment 1, please refer to fig. 1, a device for preventing floating upward for underground space construction, comprising a bottom plate concrete 1, a sump 8 is disposed at the top of the bottom plate concrete 1, the vertical cross-section of the sump 8 is rectangular, a submersible pump 10 is fixedly mounted on the inner wall of the left side of the sump 8, the bottom of the submersible pump 10 is communicated with a water pumping pipe 11, the top of the submersible pump 10 is communicated with a water outlet pipe 9, one end of the water outlet pipe is penetrated through and extended to the top of the bottom plate concrete 1, the top of the bottom plate concrete 1 is disposed with a circular through hole, the size of the circular through hole is matched with the water outlet pipe 9, the top of the bottom plate concrete 1 is fixedly connected with a galvanized steel sleeve 6, one end of the galvanized steel sleeve 6 is penetrated through and extended to the bottom of the bottom plate concrete 1, the galvanized steel sleeve 6 is vertical to the top of the bottom plate concrete 1, the outer peripheral wall of, the water stop ring 5 is vertical to the galvanized steel sleeve 6, the water stop ring 5 is welded with the galvanized steel sleeve 6, a movable cover plate 7 is movably installed at the top of the galvanized steel sleeve 6, a plurality of water through holes 3 are formed in the bottom of the outer peripheral wall of the galvanized steel sleeve 6, the plurality of water through holes 3 are uniformly arranged on the outer peripheral wall of the galvanized steel sleeve 6 at equal intervals, a water filter cloth 2 is sleeved at the bottom of the galvanized steel sleeve 6, a pebble water filter area 4 is fixedly connected to the bottom of the galvanized steel sleeve 6, when the basement is constructed, effective precipitation measures are taken, the underground water level is reduced to be below 500mm of the lowest elevation of the bottom of the basement so as to ensure the structural safety, the galvanized steel sleeve 6 is generally arranged in 800 minus one square meter and is preferably arranged in the water collection pit 8 as much as possible, the potential leakage of the concrete bottom plate 1 is prevented, when the galvanized steel sleeve 6 in the water collection pit 8 is arranged in a square meter which can not satisfy 800 square meters, before the construction of the bottom plate concrete 1, a galvanized steel sleeve 6 with a water stop ring 5 is pre-buried, the galvanized steel sleeve 6 below the bottom plate concrete 1 is perforated, a water filtering cloth 2 is coated outside, a pebble water filtering area 4 is arranged at the same time, the upper part of the pebble water filtering area extends out of the bottom plate concrete 1, when the groundwater level is high, peripheral groundwater can be discharged to the bottom plate through the galvanized steel sleeve 6 under the influence of pressure, and then open water of the bottom plate concrete 1 is discharged to a sump 8 and then discharged out of a field.

Example 2, in addition to the structure described in example 1, please refer to fig. 2, a galvanized steel sleeve 6 having one end penetrating and extending to the inside of the sump 8 is fixedly connected to the right side of the sump 8, a water stop ring 5 located inside the side wall of the sump 8 is fixedly connected to the outer peripheral wall of the galvanized steel sleeve 6, a pebble water filtration area 4 is fixedly connected to the right side of the galvanized steel sleeve 6, when the galvanized steel sleeve 6 at the sump 8 is provided with a port capable of meeting the requirement of 800 plus 1000 square meter arrangement, at the lower opening of the side wall of the sump 8, the galvanized steel sleeve 6 with the water stop ring 5 is pre-embedded before concrete pouring, when the ground water level is high, the surrounding groundwater can flow into the sump 8 through the galvanized steel sleeve 6, the submersible pump 10 in the sump 8 is started to discharge the water out of the water field, and can be used as an emergency measure, when the amount of the set galvanized steel sleeve 6 suddenly increases, holes can be temporarily formed at the water collecting pit 8 and the bottom plate concrete 1, and the galvanized steel sleeve 6 is added for pressure relief, so that the measure of carrying upward floating is achieved.

In conclusion, in the upward floating prevention device for underground space construction, when the basement is constructed, effective precipitation measures are taken, the underground water level is reduced to be below 500mm of the lowest elevation of the bottom of the basement so as to ensure the structure safety, the galvanized steel sleeve 6 with the water stop ring 5 is pre-embedded before the bottom plate concrete 1 is constructed, the galvanized steel sleeve 6 below the bottom plate concrete 1 is perforated, the outer water filtering cloth 2 is coated, the pebble water filtering area 4 is arranged, the upper part of the pebble water filtering area extends out of the bottom plate concrete 1, when the underground water level is higher, the surrounding underground water can be discharged to the bottom plate through the galvanized steel sleeve 6 under the influence of pressure, then the open water of the bottom plate concrete 1 is discharged to the outside of a water collecting pit 8, and the whole scheme aims at designing the situation that the anti-floating measures are not completely formed in the construction stage, and under the condition that the basement post-pouring belt needs to be sealed in advance, the minimum construction cost is, an effective anti-floating measure is obtained, and the problems of high cost and poor effect existing in the traditional anti-floating measure are solved.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a prevention come-up device for underground space construction, includes bottom plate concrete (1), its characterized in that: the water-saving and water-saving concrete bottom plate is characterized in that a water collecting pit (8) is formed in the top of the bottom plate concrete (1), a submersible pump (10) is fixedly mounted on the left inner wall of the water collecting pit (8), a water pumping pipe (11) is communicated with the bottom of the submersible pump (10), a water outlet pipe (9) with one end penetrating through and extending to the top of the bottom plate concrete (1) is communicated with the top of the submersible pump (10), a galvanized steel sleeve (6) with one end penetrating through and extending to the bottom of the bottom plate concrete (1) is fixedly connected with the outer peripheral wall of the galvanized steel sleeve (6), a water stop ring (5) positioned inside the bottom plate concrete (1) is fixedly connected with the top of the galvanized steel sleeve (6), a movable cover plate (7) is movably mounted at the top of the galvanized steel sleeve (6), a plurality of water through holes (3) are formed in the bottom of the outer peripheral wall of the galvanized steel, the bottom of the galvanized steel sleeve (6) is fixedly connected with a pebble water filtering area (4).

2. The upward floating prevention device for underground space construction according to claim 1, wherein: the top of the bottom plate concrete (1) is provided with a circular through hole, and the size of the circular through hole is matched with that of the water outlet pipe (9).

3. The upward floating prevention device for underground space construction according to claim 1, wherein: the shape of the water stop ring (5) is an annular shape with an inner circle and an outer square, and the galvanized steel sleeve (6) is vertical to the top of the bottom plate concrete (1).

4. The upward floating prevention device for underground space construction according to claim 1, wherein: the water stop rings (5) are vertical to the galvanized steel sleeve (6), and the number of the water stop rings is multiple, and the water through holes (3) are uniformly arranged on the outer peripheral wall of the galvanized steel sleeve (6) at equal intervals.

5. The upward floating prevention device for underground space construction according to claim 1, wherein: the water stop ring (5) is welded with the galvanized steel sleeve (6), and the vertical section of the water collection pit (8) is rectangular.

6. The upward floating prevention device for underground space construction according to claim 1, wherein: the right side fixedly connected with one end of sump pit (8) runs through and extends to inside galvanized steel sleeve (6) of sump pit (8), the periphery wall fixedly connected with of galvanized steel sleeve (6) is located inside stagnant water ring (5) of sump pit (8) lateral wall, the right side fixedly connected with cobble drainage district (4) of galvanized steel sleeve (6).