CN218204592U

CN218204592U - Controllable decompression drainage anti-floating structure of underground stereo garage bottom plate

Info

Publication number: CN218204592U
Application number: CN202222568137.XU
Authority: CN
Inventors: 欧孝夺; 江杰; 陈子铭; 张璐; 张油军; 曾昱楚
Original assignee: Guangxi Geotechnical New Technology Co ltd; Guangxi Ruiyu Building Technology Co ltd
Current assignee: Guangxi Geotechnical New Technology Co ltd; Guangxi Ruiyu Building Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-01-03
Anticipated expiration: 2032-09-27

Abstract

The utility model provides a controllable decompression drainage anti-floating structure of underground stereo garage bottom plate belongs to building engineering technical field, including coarse sand screed-coat, well sand bed, metalling, plain concrete bed course, waterproof layer and reinforced concrete bottom plate, the coarse sand screed-coat sets up subaerial, and well sand bed sets up on the coarse sand screed-coat, and the metalling setting is on well sand bed, and plain concrete bed course sets up on the metalling, and the waterproof layer setting is on plain concrete bed course, and the reinforced concrete bottom plate sets up on the waterproof layer. This structure has avoided water pressure too big to cause structural damage, as an emergency treatment measure and safe deposit, guarantees secret stereo garage's stability and security, has reduceed the labour cost, even the bottom plate takes place to break owing to the existence of inverted filter and waterproof layer, groundwater passes the bottom plate and takes place the possibility of percolating water also very little, is applicable to very much secret stereo garage this type long-term use and hardly carries out the underground works structure of maintaining at the bottom plate.

Description

Controllable decompression drainage anti-floating structure of underground stereo garage bottom plate

Technical Field

The utility model relates to a building engineering technical field especially relates to an anti structure of floating of controllable decompression drainage of underground stereo garage bottom plate.

Background

The anti-floating problem of the underground structural engineering is generally solved by adopting a stress balance method, at present, the anti-floating mode is divided into active anti-floating and passive anti-floating, and the passive anti-floating mainly comprises an anti-floating anchor rod and an anti-pulling pile or combined anti-floating of weight increasing, friction anti-floating and pile anchor; the active anti-floating is mainly decompression drainage anti-floating. The passive anti-floating cost is high, the construction period is long, and due to the limitation of the structure bottom plate, the structure bottom plate is under the action of the counterforce and the water pressure of the foundation for a long time, and the conditions of cracking, water leakage and the like of the structure bottom plate often occur.

Compared with passive anti-floating, active anti-floating, namely decompression drainage anti-floating, can discharge underground water at the lower part of the structural bottom plate, and can sense the water pressure to judge whether drainage is needed, so that the water pressure borne by the bottom plate structure can be reduced, and simultaneously, the water buoyancy is reduced, and the foundation counter force is correspondingly reduced. Even if the bottom plate cracks due to the existence of the filtering layer, the possibility that the underground water penetrates through the bottom plate to leak water is very low, the waterproof quality of the structure is ensured, and the active pressure-reducing drainage anti-floating structure has long service life and can be used as a permanent anti-floating structure. However, almost no pressure-reducing drainage anti-floating structure is used for the underground stereo garage at present, and an engineering scheme suitable for the controllable pressure-reducing drainage anti-floating structure of the bottom plate of the underground stereo garage is needed.

At present, a decompression drainage anti-floating engineering scheme for an underground stereo garage is lacked, the traditional anti-floating measures are high in cost and long in construction period, the pressure of a substrate cannot be effectively released, and a bottom plate is still in a high-stress bearing state, so that the long-term use and safety of the structure are not facilitated; the existing decompression drainage anti-floating scheme is only used for drainage and decompression by underground water, a monitoring mode is lacked to determine that the current underground water pressure needs no drainage and decompression, an emergency measure that the structure cannot timely decompress when the underground water level rapidly rises is not considered, and the permanent drainage is improved to be the drainage only when necessary, so that the influence of continuous drainage on the periphery is reduced, and the scheme is not suitable for buildings which are used for a long time in an underground stereo garage, have few workers to enter and are difficult to maintain on a bottom plate.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti structure of floating of controllable decompression drainage of underground stereo garage bottom plate, it is with high costs to solve traditional anti floating measure, and the period is long, and basement pressure can not be effectively released, and the bottom plate still is in the highly stressed state of bearing, is unfavorable for the permanent use of structure and safe technical problem.

In order to realize the purpose, the utility model adopts the technical scheme as follows:

the utility model provides an anti structure that floats of controllable decompression drainage of underground stereo garage bottom plate, including the grit screed-coat, well sand bed, the metalling, plain concrete bed course, waterproof layer and reinforced concrete bottom plate, the grit screed-coat sets up subaerial, well sand bed sets up on the grit screed-coat, the metalling sets up on well sand bed, plain concrete bed course sets up on the metalling, the waterproof layer sets up on plain concrete bed course, the reinforced concrete bottom plate sets up on the waterproof layer, the metalling is provided with a plurality of collector pipe, communicate each other between the collector pipe, the collector pipe row mouth and the drainage well intercommunication of collector pipe.

Furthermore, a first geotechnical cloth layer is arranged between the coarse sand leveling layer and the medium sand layer, and a second geotechnical cloth layer is arranged between the gravel layer and the plain concrete cushion layer.

Furthermore, an abrasion layer is arranged on the reinforced concrete bottom plate, a steel plate cover is arranged at the flat position of the drainage well and the reinforced concrete bottom plate, and a water pump and a water level sensor are arranged in the drainage well.

Furthermore, a water collecting pipe row opening electric valve and a water collecting pipe row opening pressure sensor are arranged at the position of the water collecting pipe row opening, and the water collecting pipe row opening pressure sensor is arranged on the inner side of the water collecting pipe row opening electric valve.

Furthermore, the scheme is further provided with a pressure relief pipe, the pressure relief pipe is vertically arranged, and the bottom of the pressure relief pipe is communicated with the top of the gravel layer.

Further, the bottom of pressure release pipe is provided with pressure release pipe pressure sensor, and the top of pressure release pipe is provided with pressure release pipe electric valve, and pressure release pipe pressure sensor all is connected with external control device with pressure release pipe electric valve.

The utility model discloses owing to adopted above-mentioned technical scheme, following beneficial effect has:

the utility model has the advantages of safety, the time limit for a project is short, low cost, long service life, application range is wide and do not receive the characteristics of place restriction, anti superficial structure of decompression drainage to traditional has improved, because underground three-dimensional garage usually all is that automatic work does not have the staff and gets into, motor valve and pressure sensors have been set up in drainage shaft collector pipe department, become permanent drainage just drainage when necessary, thereby avoid lasting permanent drainage to make ground water level reduce and produce harmful effects to the periphery, the setting up of relief pressure valve can deal with the condition that ground water level risees fast simultaneously, avoided water pressure too big arouse structural damage, as an emergency treatment measure and safety deposit, guarantee underground three-dimensional garage's stability and security, the labour cost has been avoided, even the bottom plate takes place to break because the existence of reverse filter bed and waterproof layer, groundwater passes the possibility that the bottom plate takes place the percolating water also very little, be applicable to underground three-dimensional garage type long-term use and hardly carry out the underground works structure of maintaining at the bottom plate.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

In the attached drawing, 1-coarse sand leveling layer, 2-first geotechnical cloth layer, 3-medium sand layer, 4-gravel layer, 5-second geotechnical cloth layer, 6-plain concrete cushion layer, 7-waterproof layer, 8-pressure release pipe, 9-pressure release pipe pressure sensor, 10-pressure release pipe electric valve, 11-reinforced concrete bottom plate, 12-wearing layer, 13-water collection pipe, 14-water collection pipe discharge port, 15-water collection pipe discharge port pressure sensor, 16-water collection pipe discharge port electric valve, 17-steel plate cover, 18-drainage well, and 19-water suction pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and by referring to preferred embodiments. However, it should be noted that the numerous details set forth in the description are merely intended to provide a thorough understanding of one or more aspects of the invention, even though such aspects of the invention may be practiced without these specific details.

As shown in fig. 1, a controllable decompression drainage anti-floating structure of underground stereo garage bottom plate, including coarse sand screed-coat 1, well sand bed 3, metalling 4, plain concrete bed course 6, waterproof layer 7 and reinforced concrete bottom plate 11, coarse sand screed-coat 1 sets up subaerial, well sand bed 3 sets up on coarse sand screed-coat 1, metalling 4 sets up on well sand bed 3, plain concrete bed course 6 sets up on metalling 4, waterproof layer 7 sets up on plain concrete bed course 6, reinforced concrete bottom plate 11 sets up on waterproof layer 7, metalling is provided with a plurality of collector pipe 13 in the 4, communicate each other between the collector pipe 13, collector pipe row mouth 14 and the drainage shaft 18 intercommunication of collector pipe 13. A first geotechnical cloth layer 2 is arranged between the coarse sand leveling layer 1 and the middle sand layer 3, and a second geotechnical cloth layer 5 is arranged between the gravel layer 4 and the plain concrete cushion layer 6.

The bottom layer is a coarse sand leveling layer with the thickness of 100mm, a geotextile layer, a medium coarse sand filtering layer with the thickness of 200mm and the diameter of 5-25 mm, a gravel filtering layer with the thickness of 300mm and the diameter of 25-70 mm, a geotextile layer, a plain concrete protective layer with the thickness of 100mm, a waterproof layer and a reinforced concrete bottom plate of the underground stereo garage are sequentially arranged from top to bottom, and the thickness and the diameter of gravels of the inverted filtering layer are determined according to the soil condition of a specific project. A plurality of PVC trompil collection drainage pipe that link to each other with great ease have been arranged in the inverted filter, outsourcing geotechnological inverted filter cloth, be connected with a plurality of drainage wells in part collection drainage pipe department, drainage well lateral wall and bottom plate are by concrete placement, the steel apron has been placed at the drainage well top, the collector pipe department with the drainage well intercommunication is equipped with controlling means such as motor valve and pressure sensors, the collector pipe of being connected with the drainage well is 1 ~ 300 to the inclination of drainage well, the groundwater gets into through collector pipe surface aperture behind the inverted filter under the hydraulic pressure effect, thereby the groundwater in the collection drainage pipe converges into the drainage well under the action of gravity, thereby reduce groundwater level via the suction pump discharge again.

The embodiment of the utility model provides an in, be provided with wearing and tearing layer 12 on the reinforced concrete bottom plate 11, drainage well 18 is provided with steel plate cover 17 with reinforced concrete bottom plate 11 department of leveling mutually, is provided with suction pump 19 and level sensor in the drainage well 18. A water collecting pipe array opening electric valve 16 and a water collecting pipe array opening pressure sensor 15 are arranged at the water collecting pipe array opening 14, and the water collecting pipe array opening pressure sensor 15 is arranged on the inner side of the water collecting pipe array opening electric valve 16.

The motor valve of the collection drainage pipe department of being connected with the drainage well is normally in the closed condition, when pressure sensors response groundwater pressure and reach the specified value, can be to the automatic valve of opening of control system transmission signal control motor valve and then in the drainage well of groundwater, be equipped with the suction pump in the drainage well, can take out the groundwater that the drainage pipe was arranged in the drainage well, thereby can guarantee to avoid permanent incessant drainage to lead to being difficult to control groundwater level, the influence of precipitation to all ring edge borders and building stability has been reduced, the existence of inverted filter and geotechnological cloth makes the sand granule in the stratum remain, avoided leading to the ground foundation soil to run off along with groundwater because of the drainage and then the potential safety hazards such as underground and ground structure subsides have appeared, the security and the stability of underground structure have been guaranteed.

In the embodiment of the utility model, above-mentioned scheme still is provided with pressure release pipe 8, the vertical setting of pressure release pipe 8, the bottom of pressure release pipe 8 and the top intercommunication of metalling 4. The bottom of pressure release pipe 8 is provided with pressure release pipe pressure sensor 9, and the top of pressure release pipe 8 is provided with pressure release pipe electric valve 10, and pressure release pipe pressure sensor 9 all is connected with external control device with pressure release pipe electric valve 10.

Still be equipped with the pressure release pipe in the anti structure that floats of decompression drainage, the pressure release pipe is managed for PVC together, is equipped with motor valve and pressure sensors on the pressure release pipe equally, and when groundwater level risees fast or the stratum has very big infiltration hidden danger, the pressure release pipe can respond to water pressure at once and open the valve and draw water the pressure release, has avoided too big underground structure bottom plate that arouses of water pressure to destroy, can regard as an emergency treatment measure, acts as safe deposit.

In the decompression drainage system, the drainage slope is 1, and the inverted filter drainage blind ditch is set to be inverted trapezoid at intervals, so that the water collection capacity is increased, a PVC (polyvinyl chloride) water collection pipe of the drainage blind ditch is connected with a drainage well through a water collection pipe with a motor valve and a pressure sensor, and a middle coarse sand bag filled with broken stones is arranged at a water inlet of the drainage well in order to prevent the water collection pipe from being blocked.

The filter layer has coarse sand and major diameter rubble in the minor diameter, coarse sand screed-coat, PVC collector pipe, the pressure release pipe, motor valve, pressure-sensitive device etc. and valve department is equipped with pressure-sensitive device, can come opening and closing of control valve through response water pressure. Consider that underground stereo garage usually is that automatic work does not have the staff and gets into and hardly maintain at the bottom plate, has set up motor valve and pressure sensors in drainage shaft collector pipe department, the utility model discloses can regard as permanent anti-floating structure and can control the switch of drainage shaft collector pipe department check valve, can deal with the fluctuation of water level in a flexible way, become permanent drainage and just discharge when necessary, control water level is stable at invariable level, thereby avoid lasting permanent drainage to make ground water level reduce and produce harmful effects to the periphery, when ground water level rises to lead to drainage shaft pressure release untimely or the stratum to have very big infiltration hidden danger too soon, the pressure release pipe can respond to water pressure at once and open the valve and take water and draw water the pressure release, avoided water pressure too big to cause structural damage, as an emergency treatment measure and safety reserve, underground stereo garage's stability and security have been guaranteed, manual maintenance expense has been exempted from. The utility model provides a newly-built and existing building basement buoyancy's problem, changed traditional anti technical singleness, the relatively poor current situation of economic nature of floating, solved the anti safety, sustainable development and the environmental protection problem that faces of floating of underground structure.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an anti structure that floats of controllable decompression drainage of underground stereo garage bottom plate which characterized in that: including coarse sand screed-coat (1), well sand bed (3), metalling (4), plain concrete bed course (6), waterproof layer (7) and reinforced concrete bottom plate (11), coarse sand screed-coat (1) sets up subaerial, well sand bed (3) set up on coarse sand screed-coat (1), metalling (4) set up on well sand bed (3), plain concrete bed course (6) set up on metalling (4), waterproof layer (7) set up on plain concrete bed course (6), reinforced concrete bottom plate (11) set up on waterproof layer (7), be provided with a plurality of collector pipe (13) in metalling (4), communicate each other between collector pipe (13), water-collecting pipe row mouth (14) and the drainage shaft (18) intercommunication of collector pipe (13).

2. The controllable decompression drainage anti-floating structure of underground stereo garage floor according to claim 1, characterized in that: a first geotextile layer (2) is arranged between the coarse sand leveling layer (1) and the medium sand layer (3), and a second geotextile layer (5) is arranged between the gravel layer (4) and the plain concrete cushion layer (6).

3. The controllable decompression drainage anti-floating structure of underground stereo garage floor according to claim 1, characterized in that: the reinforced concrete bottom plate (11) is provided with a wearing layer (12), the drainage well (18) is provided with a steel plate cover (17) at the position which is level with the reinforced concrete bottom plate (11), and the drainage well (18) is internally provided with a water pump (19) and a water level sensor.

4. The controllable decompression drainage anti-floating structure of underground stereo garage floor according to claim 1, characterized in that: a water collecting pipe discharge opening electric valve (16) and a water collecting pipe discharge opening pressure sensor (15) are arranged at the position of the water collecting pipe discharge opening (14), and the water collecting pipe discharge opening pressure sensor (15) is arranged on the inner side of the water collecting pipe discharge opening electric valve (16).

5. The controllable decompression drainage anti-floating structure of underground stereo garage floor according to claim 1, characterized in that: still be provided with pressure release pipe (8), pressure release pipe (8) vertical setting, the bottom of pressure release pipe (8) and the top intercommunication of metalling (4).

6. The controllable pressure-reducing drainage anti-floating structure of the bottom plate of the underground stereo garage according to claim 5, wherein: the bottom of the pressure relief pipe (8) is provided with a pressure relief pipe pressure sensor (9), the top of the pressure relief pipe (8) is provided with a pressure relief pipe electric valve (10), and the pressure relief pipe pressure sensor (9) and the pressure relief pipe electric valve (10) are both connected with an external control device.