CN217480068U - Stone pile foundation buttress type retaining wall wharf structure - Google Patents

Stone pile foundation buttress type retaining wall wharf structure Download PDF

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Publication number
CN217480068U
CN217480068U CN202220049059.XU CN202220049059U CN217480068U CN 217480068 U CN217480068 U CN 217480068U CN 202220049059 U CN202220049059 U CN 202220049059U CN 217480068 U CN217480068 U CN 217480068U
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retaining wall
counterfort
wharf
type retaining
gravel
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王瑞
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China Hydropower Consulting Group Guiyang Survey And Design Institute Of Geotechnical Engineering Co ltd
PowerChina Guiyang Engineering Corp Ltd
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China Hydropower Consulting Group Guiyang Survey And Design Institute Of Geotechnical Engineering Co ltd
PowerChina Guiyang Engineering Corp Ltd
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Abstract

The utility model discloses a buttress type retaining wall wharf structure for a gravel pile foundation, which is characterized in that a bottom plate is arranged at the bottom of the buttress type retaining wall, vibro-replacement gravel piles are arranged at the lower part of the bottom plate according to a certain pitch, and the bottom of the vibro-replacement gravel pile extends into bedrock, so that the foundation bearing capacity can be greatly improved, the stability and the safety of the structure are ensured, and the increase of engineering quantity and investment caused by deep excavation of a weak foundation or adoption of a high pile wharf foundation is avoided; meanwhile, a geotechnical mat drainage layer and a reversed filtering gravel layer are arranged on the rear side of the counterfort type retaining wall panel and the upper side of the heel plate, drainage holes are formed in the counterfort type retaining wall heel plate, and a throwing filling block stone is arranged at the bottom of the counterfort type retaining wall to form an integral drainage system, so that accumulated water on the back of the wall can be quickly drained, the balance of the internal and external water pressures of the counterfort type retaining wall is ensured, and the integral stability of the structure is ensured; in addition, the outer side of the buttress type retaining wall panel is provided with the fender, and the upper part of the buttress type retaining wall panel is provided with the breast wall and the mooring post, so that the ship and the wharf are prevented from being damaged, and the ship can be conveniently moored.

Description

Stone pile foundation buttress type retaining wall wharf structure
Technical Field
The utility model provides a rubble pile basis counterfort formula retaining wall wharf structure belongs to harbour and pier construction technical field, is applicable to wharf bases such as harbour, water conservancy diversion and meets dock design and construction of weak ground, deep overburden.
Background
The wharf is a hydraulic building for ships to stop, load and unload goods and passengers, and is a widely adopted vertical wharf, which is convenient for ships to stop and for the machines to directly drive to the front edge of the wharf, so as to improve the loading and unloading efficiency. The wharf structure forms include a gravity type, a high pile type, a sheet pile type and a counterfort type, and are determined mainly according to comprehensive consideration of use requirements, natural conditions and construction conditions. The gravity wharf is kept stable by the self weight of a building and the weight of a filler within a structural range, has good structural integrity, is firm and durable, is easy to repair after being damaged, has an integral masonry type and a prefabricated assembly type, and is suitable for a better foundation; the high-pile wharf consists of foundation piles and an upper structure, the lower parts of the piles are driven into the soil, the upper parts of the piles are higher than the water surface, the upper structure is provided with a beam plate type, a girder-free large plate type, a frame type, a bearing platform type and the like, the high-pile wharf belongs to a permeable structure, waves and water flow can pass below the plane of the wharf, the waves are not reflected, flood discharge is not influenced, silting can be reduced, and the high-pile wharf is suitable for soft soil foundations, but the foundation piles are difficult to construct, and the engineering cost is higher; the sheet pile wharf is composed of a sheet pile wall and an anchorage facility, and bears the ground use load and the lateral pressure generated by filling soil behind the wall by means of the sheet pile and the anchorage facility.
The buttress wharf is composed of a buttress retaining wall and an upper structure, and the buttress retaining wall is mainly characterized by simple structure, convenient construction, small wall body section and light weight, can better play the strength performance of materials, and can adapt to foundations with lower bearing capacity. In the prior art, the application of the structure is very wide, and a plurality of innovative results are brought forward. For example, the invention patent application with the publication number of CN112854120A discloses a counterfort structure with an anchorage, the utility model with the publication number of CN212612253U discloses a step-type T-shaped retaining wall wharf structure with an anchorage, the invention patent application with the publication number of CN111236260A discloses a variable-rigidity combined type prefabricated double-row pile supporting structure and a construction method thereof, and the invention patent with the publication number of CN109555081A discloses a counterfort type ecological revetment structure suitable for soft soil foundations and a construction method thereof.
However, the existing buttress wharf still has a great problem because when the buttress wharf with a soft foundation or a deep covering layer is adopted, the structure is prone to settlement or deformation due to insufficient bearing capacity of the foundation, and even the structure is prone to toppling. Therefore, the prior art of the buttress wharf is still imperfect, and there is still a need for improvement, how to improve the foundation bearing capacity of a soft foundation or a deep overburden wharf through foundation structure adjustment while ensuring the economical efficiency of the buttress wharf, and meanwhile, rapidly discharging underground water behind a wharf retaining wall to avoid the adverse effect of underground water pressure on the wharf is a key for the buttress wharf suitable for the foundation with the soft foundation or the deep overburden wharf foundation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a rubble pile basis counterfort formula barricade wharf structure to there is soft foundation or deep overburden wharf foundation in the solution, adopt conventional counterfort type wharf easily to result in the structure to subside or warp because of the foundation bearing capacity is not enough, perhaps the basis digs deeply and leads to the wall height to increase and arouse structural engineering volume and investment great, and easily receive groundwater to influence great lead to counterfort formula wharf range of application narrower, unsuitable application has the problem of soft foundation or deep overburden wharf foundation.
The utility model discloses a realize like this:
the structure comprises a counterfort type retaining wall, wherein a bottom plate is arranged at the bottom of the counterfort type retaining wall, vibro-replacement stone piles are arranged at the lower part of the bottom plate according to a certain interval, and the bottoms of the vibro-replacement stone piles penetrate into bedrock, so that the bearing capacity of the foundation can be greatly improved, the stability and the safety of the structure can be ensured, and the increase of the engineering quantity and the investment caused by deep excavation of a weak foundation or adoption of a high-pile wharf foundation can be avoided;
meanwhile, a geotextile mat drainage layer and a reversed filtering gravel layer are arranged on the rear side of the counterfort type retaining wall panel and the upper side of the heel plate, drainage holes are arranged on the counterfort type retaining wall heel plate, and a throwing filling block stone is arranged at the bottom of the counterfort type retaining wall to form an integral drainage system, so that accumulated water on the back of the wall can be quickly drained, the water pressure balance inside and outside the counterfort type retaining wall is ensured, and the integral stability of the structure is ensured;
in addition, the outer side of the buttress type retaining wall panel is provided with the fender, and the upper part of the buttress type retaining wall panel is provided with the breast wall and the mooring post, so that the ship and the wharf are prevented from being damaged, and the ship can be conveniently moored.
The pile diameter of the vibroflotation gravel pile is 0.8-1.5 m, the row spacing is 2-3 m, the pile bottom of the vibroflotation gravel pile is arranged in a quincunx manner and penetrates into the bedrock by 0.5-1 m.
As a further preferred scheme, the bottom plate is of a reinforced concrete structure, the strength grade of concrete is not lower than C30, and the thickness of the bottom plate is 40-60 cm.
Wherein, as the further preferred scheme, geotechnical mat pad thickness 10cm, the anti-rubble layer thickness of straining is 30~50 cm.
Wherein, as a further preferred scheme, the wharf ground adopts a C25 concrete pavement, and the thickness is not less than 30 cm.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the bottom plate is arranged at the bottom of the counterfort type retaining wall structure, the vibroflotation gravel piles are arranged at the lower part of the bottom plate according to a certain interval, the bottoms of the vibroflotation gravel piles go deep into a foundation rock, the bottom plate and the vibroflotation gravel piles are stressed integrally, the foundation bearing capacity of the bottom plate and the vibroflotation gravel piles can be greatly improved, the stability and the safety of the wharf structure are ensured, the construction of the gravel piles is simple, the gravel can be obtained from the local, the engineering quantity and the investment are low, the increase of the engineering quantity and the investment caused by deep excavation of a soft foundation or adoption of a high-pile wharf foundation is avoided, and the method is suitable for the existence of the soft foundation or the wharf foundation with a deep covering layer.
(2) The geotechnical mat drainage layer and the reversed filtering gravel layer are arranged on the rear side of the counterfort type retaining wall panel and the upper side of the heel plate, the drain holes are formed in the counterfort type retaining wall heel plate, the throwing filling block stone is arranged at the bottom of the counterfort type retaining wall, a whole drainage system is formed, accumulated water behind the wall back can be rapidly gathered into the geotechnical mat drainage layer and is drained to the throwing filling block stone through the drain holes, the balance of water pressure inside and outside the counterfort type retaining wall is guaranteed, the adverse effect of underground water pressure on a wharf is avoided, and the overall stability of the wharf structure is guaranteed.
(3) The outer side of the buttress type retaining wall panel is provided with the fender for slowing down the impact force between the ship and the wharf or between the ships in the process of docking or mooring, preventing the ships and the wharf from being damaged, and the upper part of the buttress type retaining wall panel is provided with the breast wall and the mooring post for facilitating the mooring of the ships.
Drawings
Fig. 1 is a typical cross-sectional view of the present invention.
The labels in the figures are: 1-buttress retaining wall; 2-vibroflotation of the gravel pile; 3-a bottom plate; 4-throwing and filling the rock blocks; 5-geotechnical mat; 6-anti-filtering the crushed stone layer; 7-a drain hole; 8-backfill; 9-dock floor; 10-breast wall; 11-fender; 12-bollard tying; 13-original ground line; 14-design low water level; 15-design high water level.
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.
As shown in fig. 1, the present invention is implemented as follows:
all the structural plates of the counterfort retaining wall 1 are of a reinforced concrete structure, the strength grade of concrete is not lower than C30, and the structural thickness and the reinforcing bars can be determined by calculation according to stress.
The bottom of the counterfort retaining wall 1 is provided with the vibroflotation gravel piles 2, the pile diameter of the vibroflotation gravel piles 2 is 0.8-1.5 m, the pitch of the row spacing is 2-3 m, the quincunx arrangement is realized, the pile bottom of the vibroflotation gravel piles 2 goes deep into the bedrock by 0.5-1 m, and the pile diameter and the pitch of the vibroflotation gravel piles 2 can be properly adjusted according to the actual engineering situation. Shake and dash 2 tops of gravel pile and set up bottom plate 3, 3 reinforced concrete structures of bottom plate, concrete strength grade should not be less than C30, and thickness 40~60cm, bottom plate 3 shake with its bottom and dash 2 whole atress of gravel pile, improve pier structure foundation bearing capacity.
The rear side of the panel of the counterfort retaining wall 1 and the upper side of the heel plate are provided with a geotechnical mat 5 drainage layer and an inverse filtering gravel layer 6, the heel plate of the counterfort retaining wall 1 is provided with a drainage hole 7, the bottom of the counterfort retaining wall 1 is provided with a filler block stone 4 to form an integral drainage system, accumulated water in backfill 8 behind the wall back can be rapidly converged into the geotechnical mat 5 drainage layer and is discharged to the filler block stone 4 through the drainage hole 7, and the balance of water pressure inside and outside the counterfort retaining wall is ensured. The thickness of the geotechnical mat pad 5 is 10cm, the geotechnical mat pad is a structure formed by novel geotechnical synthetic materials which are formed by melting and lapping the disordered filaments, the geotechnical mat pad is high in pressure resistance and large in hole opening density, has an all-dimensional water collecting and draining function, and prevents fine particles from being brought into the geotechnical mat pad 5 to cause blockage, wherein the thickness of the reverse filtering gravel layer 6 is 30-50 cm.
1 structural concrete of counterfort retaining wall reaches above 70% intensity and can carry out the construction of wall back of the body backfill 8, and backfill 8 should be laminated and roll closely knit, and the synchronous construction of counterfort metalling 6 and backfill 8, for preventing 1 structural damage of counterfort retaining wall, the peripheral backfill 8 of structure adopts artifical the paving, adopts small-size compaction machine to roll closely knit. The top of the backfill material 8 is a wharf ground 9, and the wharf ground 9 is a C25 concrete pavement with the thickness not less than 30 cm.
The outer side of the panel of the counterfort retaining wall 1 is provided with a fender 11 for slowing down the impact force between a ship and a wharf or between the ships in the process of landing or mooring, so that the ships and the wharf are prevented from being damaged, and the upper part of the counterfort retaining wall is provided with a breast wall 10 and a bollard 12 for facilitating the mooring of the ships.
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 (7)

1. The utility model provides a gravel pile basis counterfort formula barricade wharf structure, includes counterfort formula barricade (1), its characterized in that: the bottom plate (3) is arranged at the bottom of the structure of the counterfort retaining wall (1), the vibro-replacement stone pillar (2) is arranged at the lower part of the bottom plate (3), the bottom of the vibro-replacement stone pillar (2) extends into bedrock, and the bottom plate (3) and the vibro-replacement stone pillar (2) are integrally stressed.
2. The gravel pile foundation buttress retaining wall wharf structure of claim 1, wherein:
counterfort rubble layer (6) are equipped with between geotechnological mat pad (5) and backfill (8) of pier ground (9) below to counterfort rubble layer (5) that counterfort rubble layer (5) constitute is equipped with in counterfort barricade (1) panel rear side and heel board upside, is equipped with wash port (7) on counterfort barricade (1) heel board, is equipped with in counterfort barricade (1) bottom and throws packing stone (4).
3. The gravel pile foundation buttress retaining wall wharf structure of claim 1, wherein:
the outer side of the panel of the buttress retaining wall (1) is provided with a fender (11), and the upper part of the panel is provided with a breast wall (10) and a bollard (12).
4. The gravel pile foundation buttress retaining wall wharf structure of claim 1, wherein: the pile diameter of the vibroflotation gravel pile (2) is 0.8-1.5 m, the row spacing is 2-3 m, the pile bottom of the vibroflotation gravel pile (2) penetrates into the bedrock by 0.5-1 m in a quincunx arrangement mode.
5. The gravel pile foundation buttress retaining wall wharf structure of claim 1, wherein: the bottom plate (3) is of a reinforced concrete structure, the strength grade of concrete is not lower than C30, and the thickness is 40-60 cm.
6. The gravel pile foundation buttress type retaining wall wharf structure of claim 2, wherein: the thickness of the geotechnical mat pad (5) is 10cm, and the thickness of the anti-filtering gravel layer (6) is 30-50 cm.
7. The gravel pile foundation buttress retaining wall wharf structure of claim 2, wherein: the wharf ground (9) is a C25 concrete pavement, and the thickness is not less than 30 cm.
CN202220049059.XU 2022-01-10 2022-01-10 Stone pile foundation buttress type retaining wall wharf structure Active CN217480068U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202220049059.XU CN217480068U (en) 2022-01-10 2022-01-10 Stone pile foundation buttress type retaining wall wharf structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202220049059.XU CN217480068U (en) 2022-01-10 2022-01-10 Stone pile foundation buttress type retaining wall wharf structure

Publications (1)

Publication Number Publication Date
CN217480068U true CN217480068U (en) 2022-09-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202220049059.XU Active CN217480068U (en) 2022-01-10 2022-01-10 Stone pile foundation buttress type retaining wall wharf structure

Country Status (1)

Country Link
CN (1) CN217480068U (en)

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