CN212223973U

CN212223973U - Flexible connection structure of vertical seepage-proof body and superstructure in foundation

Info

Publication number: CN212223973U
Application number: CN202020251722.5U
Authority: CN
Inventors: 张信伟; 孙保虎; 胡峰军; 欧阳飞; 姜丞; 黄亚栋; 吴国君; 罗海程; 白国文
Original assignee: Hubei Provincial Communications Planning And Design Institute Co ltd
Current assignee: Hubei Provincial Communications Planning And Design Institute Co ltd
Priority date: 2020-03-04
Filing date: 2020-03-04
Publication date: 2020-12-25
Anticipated expiration: 2030-03-04

Abstract

The utility model discloses a flexible connection structure of perpendicular prevention of seepage body and upper portion major structure in ground. This connection structure includes: the bottom of the flexible asphalt block is provided with a tooth socket and the groove at the top is embedded into the flexible asphalt block to prevent water flow from permeating; the upper part of the flexible asphalt block is provided with a caulking joint for embedding the lower end of the copper water stop into the flexible asphalt block, and the upper end of the copper water stop is embedded into an upper structure to prevent water flow from permeating. The connection mode of the utility model is connected by the flexible asphalt block and the copper water stop belt, has certain flexible deformation capacity, and can effectively adjust the differential settlement between the lower foundation seepage-proofing body and the upper structure; the utility model discloses a connected mode uses the embedding to give first place to, through the dead weight of superstructure thing, the setting of the lower part tooth's socket of the recess of the foundation prevention of seepage body, flexible pitch piece and the mode of embedding each other, connects closely, and prevention of seepage is effectual, has strengthened the prevention of seepage performance of prevention of seepage system greatly.

Description

Flexible connection structure of vertical seepage-proof body and superstructure in foundation

Technical Field

The utility model belongs to the technical field of prevention of seepage system among water conservancy and the water conservancy project, the flexible connection structure that perpendicular prevention of seepage between in particular to hydraulic structure's lower part ground prevention of seepage body and the superstructure was connected.

Background

The water conservancy project is a project constructed for controlling and allocating surface water and underground water in the nature to achieve the purposes of removing harm and benefiting, different types of hydraulic buildings such as dams, dikes, spillways, water gates, water inlets, channels, crossing tanks, rafts, fishways and the like need to be constructed in a suitable section of a river, and the seepage-proofing project is a key link for the construction of the hydraulic buildings. As disclosed in patent 108951675a, the anti-seepage system generally adopts a combination of vertical anti-seepage and horizontal anti-seepage, the vertical anti-seepage body is an important component of the anti-seepage system, and the vertical anti-seepage body type commonly used in the foundation of a hydraulic building is plain concrete anti-seepage wall, plastic concrete anti-seepage wall, diaphragm wall and the like. Because of the load effects of pressure, structure dead weight, water pressure and the like on the upper part in the construction and operation processes, the vertical seepage-proofing body and the upper structure in the building foundation can generate certain vertical deformation, and the settlement difference is generated due to uneven stress; if the connection mode that the upper structure is directly pressed on the foundation seepage-proofing body is adopted, the problems of seepage, water leakage and the like are caused due to the existence of a gap between the upper structure and the foundation seepage-proofing body. The utility model discloses weak point to above-mentioned prior art has proposed the flexible connection structure between the perpendicular prevention of seepage body in the ground and the upper portion major structure thing, the problem of leaking of proper solution the infiltration of junction.

SUMMERY OF THE UTILITY MODEL

The utility model provides a flexible connection structure of perpendicular prevention of seepage body and superstructure in ground, including perpendicular prevention of seepage body, superstructure thing and flexible pitch piece, flexible pitch piece is equipped with the tooth's socket in the bottom and is equipped with the caulking at the top, the top of perpendicular prevention of seepage body is embedded into to the tooth's socket of flexible pitch piece lower part in, the upper end of superstructure thing bottom embedding copper waterstop, in the caulking on the lower extreme embedding flexible pitch piece upper portion of this copper waterstop, tooth's socket and caulking lengthwise direction are perpendicular with the infiltration direction.

Preferably, the vertical seepage-proofing body is arranged in a foundation, the lower end of the vertical seepage-proofing body is arranged on an underground horizontal water-resisting layer, and the foundation is a foundation containing a water-permeable soil layer and comprises a silt foundation, a sandy soil foundation and a gravel soil foundation; the upper structure is a bottom plate of a hydraulic structure and comprises a reinforced concrete structure.

Preferably, the asphalt block is an asphalt block poured by an asphalt mixture formed by mixing a modified material with asphalt, the Marshall stability is not less than 5000N, the water stability coefficient is not less than 0.90, the compressive strength is not less than 400KPa,

the settlement difference between the foundation seepage-proofing body and the upper structure can be adjusted, the load such as the dead weight of the upper structure and the force transmitted by the upper structure can be borne without being damaged, and the deformation of the asphalt block is not more than 5cm when the asphalt block bears the maximum stress of the upper structure; meanwhile, the permeability coefficient is not more than 10^-8cm/s; secondly, stretching at 4 deg.C at a speed of 1cm per minute, ductility of not less than 10cm, and softening point of 48 by ring and ball methodThe temperature of 55 ℃ below zero is certain in high-temperature stability and low-temperature crack resistance, and the block can be kept stable in shape under the general condition so as not to deform or damage due to the high and low temperature in the construction process and after the construction is finished. The asphalt indexes and the material mixing ratio are determined by tests of specific engineering according to application environments and conditions.

Preferably, the thickness of the asphalt block is not less than 300mm, the depth of each tooth groove is 100mm, the depth of each caulking joint is 100mm, at least two tooth grooves which are spaced from each other are arranged at the bottom of the asphalt block, the distance between each tooth groove and any side face of the asphalt block in the penetration direction is not less than 150mm, the distance between the surfaces of the adjacent tooth grooves is not less than 100mm, the top of the vertical seepage-proofing body is matched with the bottom of the asphalt block, and the thickness of the top of the vertical seepage-proofing body in the penetration direction is 400-800 mm.

Preferably, the thickness of the copper water stop is 1.2mm, the width is not less than 400mm, and the tensile strength is not less than 205N/mm²And the elongation is not less than 30%.

The asphalt block is prefabricated, and the size of the bottom tooth socket of the asphalt block is prefabricated by combining the size of the groove of the foundation seepage-proofing body before prefabrication.

The copper water stop is customized by a manufacturer, and is directly embedded and constructed after being processed and molded by the manufacturer.

Utility model's beneficial effect: (1) the utility model discloses a connected mode adopts embedded connection, during perpendicular prevention of seepage body embedding pitch piece, during the lower part embedding pitch piece of copper waterstop, during the upper portion embedding superstructure thing of copper waterstop, the connected mode of mutual embedding has guaranteed to connect inseparably, and connection performance is good. (2) This connection mode relies on superstructure dead weight compaction, relies on the flexible connection mode that the difference subsides between pitch piece regulation ground prevention of seepage body and the superstructure thing, and effectual prevention rivers infiltration, the prevention of seepage performance is good. (3) The asphalt block of this connected mode can be prefabricated, and the copper waterstop passes through manufacturer machine-shaping, during the construction directly lay, the embedding can, construction convenience has saved construction period greatly. (4) The asphalt block and the copper water stop used in the connection mode are all common building materials, the cost is low, and compared with other modes such as rigid connection and the like, the connection mode saves the construction cost.

Drawings

Fig. 1 is a schematic cross-sectional view of a flexible connection between the top of a vertical impermeable body and the bottom of a superstructure for use in a foundation according to the present invention.

Fig. 2 is a schematic plan view of a flexible connection between the top of a vertical impermeable body and the bottom of a superstructure for use in a foundation according to the present invention.

Fig. 3 is a schematic diagram of the structure dimensions of the present invention.

Labeled as: the anti-seepage asphalt block comprises a foundation 1, an upper structure 2, a vertical anti-seepage body 3, an asphalt block 4, a copper water stop 5, an asphalt block thickness B, an asphalt block tooth groove depth H1, an asphalt block upper embedded seam depth H2 and an asphalt block bottom safety width d.

Figure 4 is a dimensional view of the copper water stop of the present invention for use in the flexible connection between the top of a vertical seepage control body in a foundation and the bottom of a superstructure.

Detailed description of the invention

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Example 1

As shown in fig. 1 and 2, the utility model relates to a perpendicular prevention of seepage body in ground and superstructure's flexible connection structure, the top of the perpendicular prevention of seepage body 3 of building in hydraulic structure ground 1 is made "concave" font, lay the upper portion of perpendicular prevention of seepage body 3 with prefabricated flexible pitch piece 4, flexible pitch piece 4 lower part is equipped with tooth's socket 41, upper portion is equipped with caulking 42, tooth's socket 41 and the equal perpendicular to infiltration direction T distribution of caulking 42, the complete tooth's socket 41 of embedding to flexible pitch piece 4 in the top of perpendicular prevention of seepage body 3. The lower part of the processed and formed copper water stop 5 is embedded into the caulking joint 42 of the flexible asphalt block 4, and the upper part of the copper water stop 5 is embedded into the upper structure, so that the differential settlement between the vertical seepage-proofing body 3 and the upper structure 2 can be effectively adjusted, the connection is compact, and the water flow seepage is effectively prevented.

The utility model discloses mainly adopt embedded connection. The vertical seepage-proofing body 3 built in the foundation 1 of the hydraulic building is embedded in the asphalt block 4, the lower part of the copper water-stop strip 5 is embedded in the asphalt block 4, and the upper part of the copper water-stop strip is embedded in the upper structure, so that a closed vertical seepage-proofing system is formed.

The utility model discloses an asphalt block 4 is the asphalt mixture who forms after doping into the pitch by modified material pours the asphalt block that forms, certain plasticity and compressive strength have, general condition, marshall stability is not less than 5000N, the water stability factor is not less than 0.90, compressive strength is not less than 400KPa, both can adjust the settlement difference between the ground prevention of seepage body and the superstructure thing, can bear the dead weight of superstructure thing again and the equal load of superstructure thing transmission and do not suffer destruction, the deflection is not more than 5cm when the asphalt block need satisfy to bear the biggest atress of superstructure, see fig. 3, asphalt block 4 thickness B is not less than 300mm, the lower part sets up tooth's socket 41, tooth's socket degree of depth H1 is 100mm, make the perpendicular prevention of seepage body 3 embedding of rigidity wherein, upper portion sets up caulking 42, the seam depth H2 is 100mm, make the lower part embedding of copper waterstop 5 wherein. The safe width d of the asphalt block outside the tooth socket at the bottom of the asphalt block 4 is not less than 150 mm. The safety width, i.e. the distance of the tooth grooves 41 in the penetration direction T from the side of the asphalt block 4 close to it, the asphalt block 4 can be prefabricated. Generally, the utility model provides a perpendicular anti-seepage body 3 is the anti-seepage body type that hydraulic structure confirms according to ground foundation soil layer, flood peak, seepage prevention structure isoparametric for the hydraulic building, and the general engineering adopts plastic concrete cut-off wall, plain concrete cut-off wall, ground even wall etc. and perpendicular anti-seepage body 3 generally sets up to 400mm ~ 800mm along the thickness of direction of penetration T, and "concave" font is made at the top, and the groove depth 100mm, recess side safety width is not less than 100mm and is the interval between the adjacent tooth's socket 41 of pitch piece 4 the surface.

The utility model discloses a 5 thickness 1.2mm of copper waterstop, the width is not less than 400mm, and tensile strength is not less than 205N/mm²The elongation is not less than 30%, the lower end of the copper water stop 5 extends into the asphalt block 4 by 100mm, the upper end of the copper water stop 5 is embedded into the upper structure 1, and the copper water stop 5 is directly prefabricated by a manufacturer.

The utility model discloses a connected mode, embedded connection between perpendicular prevention of seepage body, flexible pitch piece, copper waterstop and the upper portion major structure in hydraulic structure ground has formed the flexible connected mode that rigidity prevention of seepage body and morning structure difference subside in superstructure dead weight compaction, the adaptation ground, and connection performance is good, and prevention of seepage performance is good.

The utility model relates to a perpendicular prevention of seepage body in ground and upper portion major structure's flexible connection structure, its concrete construction method divide into five steps: firstly, performing a modified asphalt mixing ratio test to obtain a test result meeting the performance requirements of compressive strength, deformation and water permeability coefficient in the embodiment 1, and secondly, manufacturing the modified asphalt precast block 4 in a construction area precast yard according to the material and size requirements in the embodiment 1 to meet the requirement of using the block after the age. Step two, processing the copper water stop belt 5: the materials and dimensions required in example 1 were processed and manufactured, and were preferably shipped to the site after the manufacturer's order was made. Thirdly, grooving the top of the vertical impervious body 3: the top of a vertical seepage-proofing body 3 built in a building foundation 1 is made into a concave shape according to the size in the text, and the construction and cleaning work of a groove is well done. Fourthly, laying the modified asphalt precast block 4: and laying the prefabricated modified asphalt block 4 on the upper part of the vertical impervious body 3, so that the top of the vertical impervious body 3 is completely embedded into the tooth grooves 41 of the flexible asphalt block 4. Step five, inserting a copper water stop belt into a slot 5: the lower part of the finished copper water stop 5 is embedded into the caulking 42 of the flexible asphalt block 4. Sixth step, copper waterstop 5 imbeds superstructure: the superstructure is poured and the upper part of the copper waterstop 5 is embedded into the superstructure.

Claims

1. The flexible connection structure of the vertical seepage-proofing body and the upper structure in the foundation comprises the vertical seepage-proofing body, the upper structure and a flexible asphalt block, and is characterized in that a tooth socket is arranged at the bottom of the flexible asphalt block, a caulking joint is arranged at the top of the flexible asphalt block, the top of the vertical seepage-proofing body is embedded into the tooth socket at the lower part of the flexible asphalt block, the bottom of the upper structure is embedded into the upper end of a copper water stop, the lower end of the copper water stop is embedded into the caulking joint at the upper part of the flexible asphalt block, and the longitudinal direction of the tooth socket and the caulking joint is perpendicular to the seepage direction.

2. The flexible connection structure of vertical seepage-proofing body and superstructure in foundation according to claim 1, characterized in that: the vertical seepage-proofing body is arranged in the foundation, the lower end of the vertical seepage-proofing body is arranged on an underground horizontal water-resisting layer, and the foundation is a foundation containing a water-permeable soil layer and comprises a silt foundation, a sandy soil foundation and a gravel soil foundation; the upper structure is a bottom plate of a hydraulic structure and comprises a reinforced concrete structure.

3. The flexible connection structure of a vertical seepage prevention body in a foundation and a superstructure according to any one of claims 1 to 2, characterized in that: the pitch piece thickness is not less than 300mm, gullet degree of depth 100mm, the caulking joint is dark 100mm, pitch piece bottom arranges two mutual spaced tooth's socket at least, the tooth's socket in the direction of penetration with the interval of any side of pitch piece is not less than 150mm, and the interval between the adjacent tooth's socket surface is not less than 100mm, perpendicular prevention of seepage body top with pitch piece bottom matches, and perpendicular prevention of seepage body top is 400 ~ 800mm in the thickness of direction of penetration.

4. The flexible connection structure of vertical seepage-proofing body and superstructure in foundation according to claim 1, characterized in that: the thickness of the copper water stop is 1.2mm, the width is not less than 400mm, and the tensile strength is not less than 205N/mm²And the elongation is not less than 30%.