CN213062119U - Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain - Google Patents

Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain Download PDF

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Publication number
CN213062119U
CN213062119U CN202020812509.7U CN202020812509U CN213062119U CN 213062119 U CN213062119 U CN 213062119U CN 202020812509 U CN202020812509 U CN 202020812509U CN 213062119 U CN213062119 U CN 213062119U
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China
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plate
curtain
seepage
cement mixing
concrete
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CN202020812509.7U
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Chinese (zh)
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郭高贵
屈迪
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Shanghai Municipal Engineering Design Insitute Group Co Ltd
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Abstract

The utility model provides a concrete nose girder is pour at cement mixing stake impervious curtain top to flexible connection between reinforced concrete bottom plate and cement mixing stake impervious curtain, and the major structure bottom plate is located concrete nose girder top, and in the concrete nose girder stretched into the major structure bottom plate, elasticity stagnant water copper sheet was buried underground on concrete nose girder upper portion, and in the other end of elasticity stagnant water copper sheet buried the major structure bottom plate, it filled flexible waterproof filler to inlay between concrete nose girder and major structure bottom plate. The utility model is suitable for a pump (floodgate) is located on the not consolidated soil base, adopts the rigidity stake to do the bearing pile, and the condition of prevention of seepage curtain is done to the cement stirring stake, can guarantee effectual stagnant water effect between prevention of seepage curtain and major structure bottom plate, prevents the infiltration destruction of bottom plate lower part. Therefore, the utility model discloses but the inhomogeneous settlement between self-adaptation pump (floodgate) structure and foundation soil has possessed suitable security, can satisfy the demand of perpendicular prevention of seepage in the hydraulic pump (floodgate) engineering.

Description

Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain
Technical Field
The utility model relates to a technique of prevention of seepage under pump (floodgate) building bottom plate among the hydraulic engineering especially relates to a flexible connection between reinforced concrete bottom plate and cement mixing stake prevention of seepage curtain among hydraulic pump (floodgate) engineering.
Background
In water conservancy and hydropower engineering, a plurality of river mouth hydraulic control buildings such as a check lock, a ship lock, a pump station and the like have the common characteristic that the upstream and the downstream have huge water head difference. When the soil layer below the hydraulic structure is poor, the osmotic pressure generated under the action of the water head difference can form a soil loss channel along the bottom plate, and the soil loss can greatly harm the safety of the hydraulic structure and the flood prevention safety of cities after the soil is lost to a certain degree. According to a large amount of engineering experience summary, when the soil layer under the hydraulic structure has stronger water permeability, the upstream of the structure should adopt the arrangement form of the vertical impervious body. The vertical seepage-proofing body can adopt reinforced concrete sheet piles, cement mortar curtains, high-pressure jet grouting curtains, concrete seepage-proofing walls, geomembrane vertical seepage-proofing structures and the like. The vertical seepage-proofing body can prolong the seepage length, cut off the seepage channel along the lower surface of the bottom plate, effectively reduce the seepage pressure under the bottom plate of the pump (gate) and reduce the risk of seepage damage.
In actual engineering, due to the limitation of construction procedures and processes, the vertical seepage-proofing body and the foundation treatment engineering are synchronously implemented, and the main reinforced concrete structure is constructed later and is difficult to be effectively connected. Especially, when the soil layer under the bottom plate of the pump (brake) is under-consolidated soil, the later settlement amount is large, rigid piles (reinforced concrete square piles, bored piles and the like) are arranged to meet the bearing capacity or settlement requirements, the pile ends penetrate through the surface layer under-consolidated soil to enter the deep bearing layer, and the impervious curtain adopts a flexible treatment mode (a cement mixing pile impervious curtain, a high-pressure jet grouting curtain) so that the synchronous settlement of the under-consolidated foundation soil and the impervious curtain is large, the independent settlement of the main body structure under the support of the rigid pile foundation is small, the settlement difference of the main body structure and the rigid pile foundation is often generated, the impervious curtain is disconnected with the bottom plate of the main body structure, and the vertical impervious function is greatly discounted, or even fails. Therefore, the key difficulty in setting up the engineering measures of the vertical impervious curtain is the flexible connection technology of the vertical impervious curtain and the bottom plate of the main hydraulic building, which can self-adaptively settle unevenly.
SUMMERY OF THE UTILITY MODEL
The utility model provides a flexible connection between reinforced concrete bottom plate and cement mixing stake prevention of seepage curtain in hydraulic pump (floodgate) engineering, but some not enough among the prior art are overcome to inhomogeneous settlement between its self-adaptation pump (floodgate) structure and foundation soil.
In order to realize the purpose, the technical scheme of the utility model is that: the flexible connection between the reinforced concrete base plate and the cement mixing pile anti-seepage curtain is characterized in that a concrete guide beam is poured at the top of the cement mixing pile anti-seepage curtain, a main structure base plate is positioned above the concrete guide beam, the concrete guide beam extends into the main structure base plate, an elastic water-stopping copper sheet is buried at the upper part of the concrete guide beam, the other end of the elastic water-stopping copper sheet is buried in the main structure base plate, and flexible waterproof filler is filled between the concrete guide beam and the main structure base plate.
Furthermore, the elastic water stop copper sheet is an omega-shaped water stop copper sheet.
Furthermore, top dowel bars are planted at the top of the seepage-proofing curtain of the cement mixing pile, burrs are chiseled at the top of the seepage-proofing curtain of the cement mixing pile, and the dowel bars extend into the lower part of the concrete guide beam.
The utility model overcomes the shortcoming that conventional cement stirring stake impervious curtain is connected has more the advantage in the aspect of security, practicality. When the seepage-proofing curtain of the cement mixing pile and foundation soil are excessively settled to cause the separation of the top of the curtain and a main structure bottom plate, a preset omega-shaped water-stopping copper sheet has larger stretching capacity, one end of the water-stopping copper sheet is embedded in a concrete guide beam at the upper part of the water-stopping curtain of the cement mixing pile, and the other end of the water-stopping copper sheet is embedded in the main structure bottom plate, so that the effective water-stopping effect between the seepage-proofing curtain of the cement mixing pile and the main structure bottom plate can be ensured, the non-uniform settlement between a pump (brake) bottom plate and the foundation soil can be adapted, the seepage damage at the lower part of the bottom plate can.
Drawings
Fig. 1 is a diagram of the pile position layout in an example of pump (brake) engineering.
Fig. 2 is a longitudinal cross-section (a-a) of the pump lock chamber in an example of pump (lock) engineering.
FIG. 3 is a cross-sectional view (B-B) of a pump chamber in an example of pump (gate) engineering.
Figure 4 is a cross-sectional overview of a flexible connection.
Fig. 5 is a large-scale view of an omega-shaped water-stop copper sheet.
Element number description:
1. a pump (gate) main structure bottom plate;
2. a pump (brake) bottom plate lower rigid pile;
3. a seepage-proof curtain of the cement mixing pile;
4. inserting ribs;
5. a concrete guide beam;
6. waterproof flexible filler;
7. elastic water stop copper sheet.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
A flexible connection between a reinforced concrete base plate and a cement mixing pile anti-seepage curtain is characterized in that top inserting ribs 4 are planted at the top of a cement mixing pile anti-seepage curtain 3, a concrete guide beam 5 is poured at the top of the cement mixing pile anti-seepage curtain 3, the inserting ribs 4 extend into the lower portion of the concrete guide beam 5, the concrete guide beam 5 extends into a pump (brake) main structure base plate 1, an elastic water-stop copper sheet 7 is buried at the upper portion of the concrete guide beam, the other end of the elastic water-stop copper sheet 7 is buried in the pump (brake) main structure base plate 1, and a flexible waterproof filler 6 is buried between the concrete guide beam 5 and the pump (brake) main structure base plate 1.
The construction method of the flexible connection comprises the following steps:
A. constructing an impervious curtain of the cement mixing pile;
B. excavating a pump (gate) foundation pit to a designed elevation;
C. chiseling the top of the impervious curtain of the cement mixing pile, and planting top dowel bars;
D. pouring a concrete guide beam at the top of the seepage-proofing curtain of the cement mixing pile, connecting the lower part of the concrete guide beam with the seepage-proofing curtain of the cement mixing pile through a dowel bar, embedding an omega-shaped water-stopping copper sheet at the upper part of the concrete guide beam, and extending the concrete guide beam into a main body structure bottom plate;
E. when the main structure bottom plate concrete engineering construction formwork erection is carried out, flexible waterproof filler is embedded and filled between the concrete guide beam and the main structure bottom plate.
As shown in fig. 4, the flexible connection of the present invention includes a dowel, a concrete guide beam, a waterproof flexible filler and a waterproof copper sheet.
The utility model is suitable for a pump (floodgate) is located on the not firm foundation of earth, adopts the rigidity stake to do the bearing pile, and the condition of seepage prevention curtain is done to the cement stirring stake. When the seepage-proof curtain and the foundation soil are excessively settled to cause the separation of the top of the curtain and the main structure bottom plate, the preset omega-shaped water-stop copper sheet has larger stretching capacity, so that the effective water-stop effect between the seepage-proof curtain and the main structure bottom plate can be ensured, and the seepage damage of the lower part of the bottom plate can be prevented. Therefore, the utility model discloses but the inhomogeneous settlement between self-adaptation pump (floodgate) structure and foundation soil has possessed suitable security, can satisfy the demand of perpendicular prevention of seepage in the hydraulic pump (floodgate) engineering.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (3)

1. The flexible connection between the reinforced concrete base plate and the cement mixing pile anti-seepage curtain is characterized in that a concrete guide beam is poured at the top of the cement mixing pile anti-seepage curtain, a main structure base plate is positioned above the concrete guide beam, the concrete guide beam extends into the main structure base plate, an elastic water-stopping copper sheet is buried at the upper part of the concrete guide beam, the other end of the elastic water-stopping copper sheet is buried in the main structure base plate, and flexible waterproof filler is filled between the concrete guide beam and the main structure base plate.
2. The flexible connection between the reinforced concrete base plate and the impervious curtain of the cement mixing pile as claimed in claim 1, wherein: the elastic water stop copper sheet is an omega-shaped water stop copper sheet.
3. The flexible connection between the reinforced concrete base plate and the impervious curtain of the cement mixing pile as claimed in claim 1, wherein: and planting top joint bars at the top of the seepage-proofing curtain of the cement mixing pile, wherein the top of the seepage-proofing curtain of the cement mixing pile is provided with a chiseling part, and the joint bars extend into the lower part of the concrete guide beam.
CN202020812509.7U 2020-05-15 2020-05-15 Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain Active CN213062119U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020812509.7U CN213062119U (en) 2020-05-15 2020-05-15 Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020812509.7U CN213062119U (en) 2020-05-15 2020-05-15 Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain

Publications (1)

Publication Number Publication Date
CN213062119U true CN213062119U (en) 2021-04-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020812509.7U Active CN213062119U (en) 2020-05-15 2020-05-15 Flexible connection between reinforced concrete bottom plate and cement mixing pile anti-seepage curtain

Country Status (1)

Country Link
CN (1) CN213062119U (en)

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