CN211172113U

CN211172113U - Anti-floating structure of siphon drainage method

Info

Publication number: CN211172113U
Application number: CN201921941828.1U
Authority: CN
Inventors: 阳杰; ***; 陈路
Original assignee: China Southwest Architectural Design and Research Institute Co Ltd
Current assignee: China Southwest Architectural Design and Research Institute Co Ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-08-04
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a siphon hinders anti structure of floating of row's method, anti structure of floating is used for basement engineering construction, basement periphery and foundation ditch bottom are the weak water or impermeable course and do not have the water channel who accesss to the foundation ditch bottom on the vertical distribution on soil layer the side wall periphery of basement is provided with the sump pit be provided with the suction pump in the sump pit, the outlet end intercommunication of sump pit and drain pipe, the end of intaking of drain pipe passes the underground infiltration water collection part intercommunication in side wall and the foundation ditch, the drain pipe is discharged to the sump pit through the siphon effect with the underground infiltration in the foundation ditch. The utility model discloses on the basis based on backfill prevention secret infiltration in the foundation ditch, through set up the sump pit at basement side wall periphery to adopt the siphon principle, will gather the infiltration discharge in the basement foundation ditch, prevent that the foundation ditch from backfilling the insecure problem that causes daily product and monthly water level constantly to rise.

Description

Anti-floating structure of siphon drainage method

Technical Field

The utility model belongs to the technical field of the construction, in particular to siphon hinders row method anti structure of floating suitable for construction basement engineering construction.

Background

For projects that underground water is not found during exploration and a basement is in an impermeable or weakly permeable layer cohesive soil foundation or a mud (shale) foundation, as water in a cohesive soil layer is mainly pore water and is not easy to supplement and discharge, a ground exploration unit cannot provide an anti-floating defense water level, and therefore the anti-floating problem is not considered in some projects. However, in actual construction, the backfilling compactness between the basement foundation pit retaining wall and the basement, namely the foundation pit fertilizer groove, is generally not high, and surface water can slowly permeate into the fertilizer groove and accumulate after a long time, so that the basement floats in a water pool formed by the foundation pit, and the phenomena of inverted arch of a basement bottom plate, cracking of a basement filling wall, even cracking of a beam column joint and the like are caused.

In order to prevent the water accumulation of a foundation pit fertilizer groove and the water infiltration into the bottom plate during the use to form a basin effect, the bottom plate floats upwards to influence the normal use of the basement, and the measures adopted by the existing design are anti-floating anchor rods generally. And the structural design of the anti-floating anchor rod is adopted, so that the construction is complex and the construction cost is high.

SUMMERY OF THE UTILITY MODEL

The invention of the utility model aims to: aiming at the existing problems, the siphon resistance drainage method anti-floating structure capable of solving the anti-floating problem of the basement more economically is provided.

The technical scheme of the utility model is realized like this: the utility model provides a siphon hinders anti structure of floating of drainage method, anti structure of floating is used for basement engineering construction, basement periphery and foundation ditch bottom are weak permeating water or impervious bed and do not lead to the water channel of foundation ditch bottom on the vertical distribution on soil layer, its characterized in that: the side wall periphery of basement is provided with the sump pit be provided with the suction pump in the sump pit, the sump pit communicates with the play water end of drain pipe, the end of intaking of drain pipe passes the underground infiltration water catchment portion intercommunication in side wall and the foundation ditch, the drain pipe is discharged to the sump pit in through siphon effect with the underground infiltration in the foundation ditch.

Siphon hinder row method anti structure of floating, its underground infiltration water collection portion in the foundation ditch adopts the sandy gravel french drain of non-woven geotechnological cloth parcel, the end of intaking of drain pipe is arranged in the sandy gravel french drain the inlet end mouth of pipe department parcel of drain pipe has geotechnological cloth, the end position of intaking of drain pipe is higher than the play water end position of drain pipe.

Siphon hinders anti structure of floating of row method, its the lime soil or the layering of clay water barrier are tamped to the upper portion backfill of sand cobble french drain, plain concrete is backfilled to the lower part of sand cobble french drain, upper portion in the foundation ditch adopts plain soil to backfill and layering tamp compaction coefficient to be greater than or equal to 0.94.

Siphon hinders anti structure of floating of row method, it is in the periphery that the drain pipe passed basement side wall part has cup jointed waterproof sleeve pipe.

The utility model discloses on the basis based on backfill prevents secret infiltration in the foundation ditch, through set up the sump pit in basement side wall periphery to adopt the siphon principle, with the seepage water discharge of gathering in the basement foundation ditch, prevent that the foundation ditch from backfilling the uncompacted problem that causes long-pending monthly water level and constantly risees, adopt the utility model discloses an after the anti-floating structure, the effect of water pressure can no longer be considered to basement bottom plate and lateral wall.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The labels in the figure are: the foundation ditch is characterized in that 1 is a side wall, 2 is a water collecting pit, 3 is a drain pipe, 4 is a sandy gravel blind ditch, 5 is a waterproof casing, 6 is a weak permeable or impermeable layer, 7 is a foundation pit, 8 is an ash soil or clay water-resisting layer, 9 is plain soil, 10 is plain concrete, and 11 is geotextile.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is made in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1, the anti-floating structure with siphon resistance and drainage method is used for basement engineering construction, and due to the characteristics of the anti-floating structure, certain precondition needs to be met in basement engineering application, namely, the periphery of the basement and the bottom of the foundation pit are both weak permeable or impermeable layers 6 in the vertical distribution of the soil layer, and the situation that the water impermeability around the foundation pit can be damaged in the foreseeable future does not occur around the building, such as the addition of an externally connected underground passage and the absence of a water passing passage leading to the bottom of the foundation pit 7.

On this basis, specifically: backfilling soil in a basement foundation pit, backfilling an ash soil or clay water-resisting layer 8 at the upper part of a sandy gravel blind ditch 4 in the foundation pit 7 by layers and tamping, backfilling plain concrete 10 at the lower part of the sandy gravel blind ditch 4, backfilling the upper part in the foundation pit 7 by using plain soil 9, wherein the compaction coefficient of the layered tamping is more than or equal to 0.94, and controlling the compactness of the backfilled soil to achieve the purpose of reducing surface water from permeating into the foundation pit as much as possible, namely playing a role in preventing underground seepage from entering the foundation pit; basement's side wall 1 periphery is provided with sump pit 2, the sump pit is arranged along side wall peripheral interval 30m ~ 50m be provided with the suction pump that has the automatic function of drawing water in the sump pit 2, sump pit 2 communicates with drain pipe 3's play water end, drain pipe 3's the end of intaking passes side wall 1 and foundation ditch 7 underground infiltration water collection portion intercommunication, drain pipe 3 is discharged to the sump pit 2 in with the underground infiltration in the foundation ditch 7 through siphon effect. Like this, through utilizing the siphon principle to the infiltration discharge of gathering in basement foundation ditch reaches and prevents that the foundation ditch backfill is not closely knit and causes the purpose that the long-pending water level that heaies up each day constantly risees.

In this embodiment, the underground water seepage and collection part in the foundation pit 7 adopts a sandy gravel blind ditch 4 wrapped by non-woven geotextile, the water inlet end of the drain pipe 3 is arranged in the sandy gravel blind ditch 4, a pipe orifice at the water inlet end of the drain pipe 3 is wrapped by geotextile 11 so as to prevent fine gravel in the foundation pit from entering the drain pipe to cause blockage, and the water inlet end of the drain pipe 3 is higher than the water outlet end of the drain pipe 3 so as to achieve a good siphoning effect; in order to improve the sealing performance of the side wall through drain pipe, a waterproof sleeve 5 is sleeved on the periphery of the portion, passing through the basement side wall 1, of the drain pipe 3.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an anti structure of floating of siphon resistance-discharge method, anti structure of floating is used for basement engineering construction, basement periphery and foundation ditch bottom are weak permeating water or impervious bed (6) and do not lead to the water channel of foundation ditch (7) bottom on the vertical distribution on soil layer, its characterized in that: side wall (1) periphery of basement is provided with sump pit (2) be provided with the suction pump in sump pit (2), sump pit (2) and the play water end intercommunication of drain pipe (3), the end of intaking of drain pipe (3) passes side wall (1) and foundation ditch (7) underground infiltration water collection portion intercommunication, drain pipe (3) are discharged to sump pit (2) through siphon effect with the underground infiltration in foundation ditch (7).

2. The siphon resistance drain anti-floating structure according to claim 1, characterized in that: underground infiltration water collection portion in foundation ditch (7) adopts sand cobble french drain (4) of non-woven geotechnological cloth parcel, the end of intaking of drain pipe (3) is arranged in sand cobble french drain (4) the parcel of the end mouth of intaking department of drain pipe (3) has geotechnological cloth (11), the end position of intaking of drain pipe (3) is higher than the play water end position of drain pipe (3).

3. The siphon resistance displacement anti-floating structure of claim 2, wherein: the upper part of the sandy gravel blind ditch (4) is backfilled with lime soil or a clay water-resisting layer (8) and tamped layer by layer, the lower part of the sandy gravel blind ditch (4) is backfilled with plain concrete (10), the upper part in the foundation pit (7) is backfilled by using plain soil (9), and the coefficient of tamping and tamping layer by layer is more than or equal to 0.94.

4. A siphon drag displacement anti-float structure as claimed in claim 1, 2 or 3, wherein: and a waterproof sleeve (5) is sleeved on the periphery of the part of the drain pipe (3) penetrating through the side wall (1) of the basement.