CN218454378U

CN218454378U - Retaining wall structure

Info

Publication number: CN218454378U
Application number: CN202222012346.6U
Authority: CN
Inventors: 阳斌; 王宏贵; 吴徐华; 谭永华
Original assignee: PowerChina Zhongnan Engineering Corp Ltd
Current assignee: PowerChina Zhongnan Engineering Corp Ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-02-07
Anticipated expiration: 2032-08-01

Abstract

The utility model provides a retaining wall structure, which comprises a retaining wall and a plurality of cast-in-place piles arranged at the bottom of the retaining wall, wherein the cast-in-place piles are arranged along the length direction of the retaining wall, and the pile length of the cast-in-place piles is less than or equal to 5m; and adjacent cast-in-place piles are integrally connected through an inter-pile plate, and the inter-pile plate is arranged at the upper part of the cast-in-place pile. The construction amount of the retaining wall structure is not greatly increased, the manufacturing cost is low, and the economical efficiency and the water-blocking effect are good; the construction needs a small field, the construction operation is fast, even the approach of mechanical equipment is not needed, the construction can be completed by manpower, and the method is very suitable for field limitation, difficult mechanical approach or large digging and large filling of mechanical approach; the requirement on the bearing capacity of the foundation is low, a bearing layer is not used for a pile foundation, the adaptability is strong, and the arrangement is flexible; the anti-overturning effect of the wide foundation of the retaining wall is achieved through the combination of the cast-in-place piles and the walls among the piles, and safety is guaranteed.

Description

Retaining wall structure

Technical Field

The utility model belongs to the technical field of a fender protection, concretely relates to retaining wall structure.

Background

In urban water conservancy or municipal works, the construction of retaining walls is often limited by various conditions, the construction of domestic cities in the past is rapidly developed, a lot of underground rainwater and sewage pipelines, other pipelines such as electric power and the like are not well planned, and a lot of completion drawings are lost, so that various underground pipelines are often dug out during construction. Common retaining walls are gravity type, cantilever type, arm supporting type, pile foundation retaining wall, anchor rod type retaining wall and the like, the retaining wall has requirements on the width of a foundation, and the pile foundation retaining wall also has requirements on the depth of the foundation. In the actual city construction process, construction units often cannot construct according to the width of the retaining wall on a design drawing because of land use or other reasons such as the fact that the retaining wall site is located on a steep slope; the pile foundation retaining wall still needs the pile foundation pore-forming, because urban area underground pipeline is numerous, and not few completion data are lost, and the pipeline under the pile foundation distributes not clearly before the construction to cause the pile foundation pore-forming process to dig pipeline such as rainwater and sewage or other barriers, lead to unable pore-forming. In summary, the construction of the retaining wall foundation in the actual urban area is often limited by the width and depth, so that the construction unit cannot construct according to the map. Under the condition of limited width and depth, the problem that engineers need to think is how to excavate the retaining wall foundation economically, safely and practically.

The Chinese patent application publication No. CN111456081A provides a pile foundation retaining wall structure and a construction method thereof, which comprises a cast-in-place pile at the lower part, a crown beam at the middle part, main stress H-shaped steel and secondary stress H-shaped steel which penetrate through the whole retaining wall structure, and a concrete precast slab at the upper part, wherein the secondary stress H-shaped steel is positioned between the two main stress H-shaped steels, and the concrete precast slab is inserted into a main stress H-shaped steel groove and a secondary stress H-shaped steel groove. The H-shaped steel and the cast-in-place pile foundation are combined to ensure that the retaining wall meets the requirements of skid resistance and inclination resistance. The combined structure can reduce the engineering quantity of the cast-in-place pile and the engineering cost. Meanwhile, the upper part of the retaining wall is of an assembly structure, so that the building speed is improved, and the height of the retaining wall can be adjusted according to engineering requirements. Compared with the traditional pile-plate wall scheme, the retaining wall has the remarkable characteristics of simple structure, small occupied space, simplicity and convenience in construction, good durability, energy conservation, environmental protection, reduction of building garbage, cost conservation and the like. However, such retaining wall structures still do not address the limited width and/or depth of the retaining wall foundation during construction.

SUMMERY OF THE UTILITY MODEL

In order to overcome the not enough of prior art, the utility model provides a retaining wall structure can solve the limited problem of width and degree of depth when the retaining wall foundation construction, has safe and reliable, is suitable for advantages such as durable, economical and reasonable, construction convenience, has very good spreading value.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

the utility model provides a retaining wall structure, includes the retaining wall and sets up in the bored concrete pile of retaining wall bottom, its structural feature is: the multiple cast-in-place piles are arranged along the length direction of the retaining wall, and the pile length of each cast-in-place pile is less than or equal to 5m; and adjacent cast-in-place piles are integrally connected through an inter-pile plate, and the inter-pile plate is arranged at the upper part of the cast-in-place pile.

The inter-pile plate and the cast-in-place pile are connected into a whole to resist the pressure of flood together, and the cast-in-place pile is shorter in pile length, so that compared with a traditional pile foundation retaining wall, the cast-in-place pile is quicker to construct, flexible to arrange and not prone to being limited by underground pipelines. Because the inter-pile plates are inserted into the ground, compared with a pure pile foundation retaining wall, the seepage path of the substrate water is increased, the waterproof curtain is played, and the waterproof effect is better. After the inter-pile plate is constructed, the excavation surface is slightly larger, the inter-pile plate needs to be backfilled, if the inter-pile plate is backfilled by filling soil, the inter-pile plate cannot be compacted due to the problem of sites, the front and the back of the inter-pile plate can be backfilled by low-grade concrete, and the problem of incompact filling soil is solved. The retaining wall structure is particularly suitable for water conservancy retaining walls, and because the water conservancy retaining walls have uplift pressure on the bases, the water conservancy retaining wall foundations are often much wider than those of retaining walls in municipal and highway industries. The construction amount of the retaining wall structure is not greatly increased, the manufacturing cost is low, and the economical efficiency and the water-blocking effect are good; the construction needs a small field, the construction operation is fast, even the approach of mechanical equipment is not needed, the construction can be completed by manpower, and the method is very suitable for field limitation, difficult mechanical approach or large digging and large filling of mechanical approach; the requirement on the bearing capacity of the foundation is low, a bearing layer is not used for a pile foundation, the adaptability is strong, and the arrangement is flexible; the anti-overturning effect of the wide foundation of the retaining wall is achieved through the combination of the cast-in-place piles and the walls among the piles, and safety is guaranteed.

Preferably, the retaining wall comprises a bearing platform, and the bearing platform is arranged at the top of the cast-in-place pile; the cushion cap is followed retaining wall length direction arranges, between the stake board top with the cushion cap is integrative to be linked to each other. The top of the inter-pile plate is integrally connected with the bearing platform to resist flood thrust transmitted by the retaining wall.

Preferably, the cross section of the cast-in-place pile is circular, and the diameter of the cast-in-place pile is D; the distance between the adjacent cast-in-place piles is L, and the value range of L is more than or equal to 2.5D and less than or equal to 5D.

Specifically, the cast-in-place pile is a hole digging cast-in-place pile. Because the length of the cast-in-place pile is short, mechanical equipment is not needed to enter the field, and the cast-in-place pile is completely finished manually.

Specifically, many the bored concrete pile evenly arranges along barricade length direction.

Preferably, a plurality of the cast-in-place piles are arranged in two rows along the width direction of the retaining wall. Under the condition of site conditions, double rows of cast-in-place piles can be arranged according to the anti-overturning force required by the retaining wall.

Specifically, the inter-pile plate is of a reinforced concrete structure, and the steel bars preset at the top of the inter-pile plate and the bearing platform are connected into an integral structure.

Specifically, the height of the inter-pile plate is greater than or equal to 1m, and the thickness of the inter-pile plate is greater than or equal to 50cm.

Specifically, the retaining wall further comprises a wall body and toughened glass, and the wall body and the toughened glass are arranged along the length direction of the retaining wall; the wall body set up in the cushion cap top, toughened glass set up in the wall body top.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the utility model discloses a retaining wall structure, the engineering volume does not have a large amount of increases, and the cost is low, economic nature and the effectual that blocks water.

2. The utility model discloses a required place of barricade structure construction is little, and the construction operation is fast, does not need mechanical equipment to enter the field even, leans on the manual work completely also can accomplish, and it is limited to be applicable to very much, mechanical access difficulty or mechanical access needs to dig greatly and fill out.

3. The utility model discloses a retaining wall structure requires lowly to the foundation bearing capacity, and the pile foundation need not reach the holding power layer, and strong adaptability arranges in a flexible way.

4. The utility model discloses a retaining wall structure realizes the antidumping effect on the wide basis of barricade through the combination of bored concrete pile and wall between the stake, and safety obtains the guarantee.

Drawings

Fig. 1 is a schematic view of a retaining wall of the present invention;

FIG. 2 is a schematic cross-sectional view taken along line B-B in FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at C-C in FIG. 1;

FIG. 4 is a schematic cross-sectional view taken along line D-D in FIG. 1;

FIG. 5 isbase:Sub>A schematic view of the elevation A-A of FIG. 1;

fig. 6 is a schematic view of a vertical structure of the steel bar of the inter-pile plate in fig. 1.

In the figure, 1-cast-in-place pile; 2-inter-pile plates; 3, bearing platform; 4, a wall body; 5-toughened glass; 6-a building; 7-reinforcing steel bars.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.

A certain flood control wall project is designed according to the flood control standard in 50 years, and the main flood control building is a concrete flood control retaining wall. The flood control wall penetrates through the river-following wind-light band, and a plurality of municipal rainwater and sewage pipes, electric power high-voltage lines and the like are arranged underground along the river-following wind-light band. When a building is constructed in 2022 months, the flood control retaining wall foundation is located on the soil filling slope, the site is narrow, the width of the retaining wall foundation is limited due to the fact that a pedestrian light path is arranged below the flood control retaining wall foundation, the retaining wall foundation is changed into a pile foundation, a 1.2m wide bearing platform is arranged on the pile foundation, and the problem of width limitation can be solved. However, the excavation of the pile foundation is not smooth, and each pile does not reach the designed pile length, such as when encountering obstacles like a sewage pipe or an underground foundation of a building.

As shown in figure 1, a flood wall is arranged in front of the building 6, and the length of the wall is 23.5m. The retaining wall bottom is equipped with bored concrete pile 1, bored concrete pile 1 is used for supporting the retaining wall. The pile spacing of the cast-in-place piles 1 positioned on the west side of the building 6 is 3.2m, the pile spacing of the cast-in-place piles 1 positioned on the north side of the building 6 is 2.7m, and the pile foundation of the cast-in-place piles 1 is vertically staggered with the wall axis direction of the building 6 by half pile diameter.

As shown in fig. 2, 3, 4 and 5, an inter-pile plate 2 is provided between adjacent cast-in-place piles 1, and the inter-pile plate 2 is provided at an upper portion of the cast-in-place piles 1. The retaining wall comprises a bearing platform 3, a wall body 4 and toughened glass 5, wherein the bearing platform 3, the wall body 4 and the toughened glass 5 are all arranged along the length direction of the retaining wall. The top of the cast-in-place pile 1 is provided with the bearing platform 3, the wall body 4 is arranged on the top of the bearing platform 3, and the top of the wall body 4 is provided with the toughened glass 5. The cast-in-place pile 1 is of a reinforced concrete structure, and the pile length of the cast-in-place pile 1 is 4m. The inter-pile plate 2 is a reinforced concrete plate, the plate thickness is 60cm, and the plate height is 1.4m. The inter-pile plate 2 is integrally connected with the cast-in-place pile 1 to form an underground wall together, and the horizontal thrust of flood outside the retaining wall is resisted through the passive soil pressure behind the wall. Because of the problem of the site, manual excavation is completely adopted, and the excavated foundation is temporarily supported by loose wood piles and wood piles. And (4) manually digging a pile and jumping holes, and putting a pile foundation reinforcement cage after hole forming. As shown in fig. 6, the horizontally distributed steel bars 7 of the inter-pile slab 2 are inserted into the pile foundation reinforcement cage of the cast-in-place pile 1, and the cast-in-place pile 1 and the inter-pile slab 2 are integrally cast with concrete. And a reinforcing steel bar 7 extending into the bearing platform 3 is reserved at the top of the inter-pile plate 2, so that the anchoring length is ensured. After the inter-pile plate 2 is constructed, the excavation surface is slightly larger, so that backfilling is needed, and if backfilling is carried out by using filling soil, compaction cannot be carried out due to the problem of a site. Therefore, the overexcavation surface of the inter-pile plate 2 is backfilled by low-standard concrete C15, and the foundation soil is guaranteed to be compact. Whether the horizontal and vertical bearing capacity of the pile foundation of the cast-in-place pile 1 is detected according to the requirements of an owner, if so, pouring a bearing platform 3 and a wall 4 after the detection is qualified; if detection is not required, the bearing platform 3 and the wall 4 can be directly poured. The steel bars 7 are preset at the top of the inter-pile plate 2 and are connected with the cast-in-place bearing platform 3 to form an integral foundation, and flood thrust transmitted by the upper wall 4 and the toughened glass 5 is resisted together. The inter-pile plate 2 is inserted underground, so that the seepage path of the water of the base can be effectively increased, and the waterproof curtain effect is achieved. The retaining wall structure has the advantages of safety, reliability, durability, economy, reasonability, convenience in construction and the like, and has very good popularization value.

The above examples are set forth so that this disclosure will be more clearly understood and understood, and not as a limitation on the scope of the invention, since various equivalent modifications of the invention will become apparent to those skilled in the art after reading this disclosure, and all such modifications are intended to fall within the scope of the invention as defined in the appended claims.

Claims

1. The utility model provides a retaining wall structure, includes the retaining wall and sets up in bored concrete pile (1) of retaining wall bottom, its characterized in that: the multiple cast-in-place piles (1) are arranged along the length direction of the retaining wall, and the pile length of each cast-in-place pile (1) is less than or equal to 5m; adjacent bored concrete piles (1) are integrally connected through an inter-pile plate (2), and the inter-pile plate (2) is arranged on the upper portion of the bored concrete piles (1).

2. The retaining wall structure according to claim 1, wherein: the retaining wall comprises a bearing platform (3), and the bearing platform (3) is arranged at the top of the cast-in-place pile (1); cushion cap (3) are followed retaining wall length direction arranges, between stake board (2) top with cushion cap (3) are integrative to be linked to each other.

3. The retaining wall structure according to claim 1, wherein: the cross section of the cast-in-place pile (1) is circular, and the diameter of the cast-in-place pile is D; the distance between the adjacent cast-in-place piles (1) is L, and the value range of L is more than or equal to 2.5D and less than or equal to 5D.

4. The retaining wall structure according to claim 1, wherein: the cast-in-place pile (1) is a hole digging cast-in-place pile.

5. The retaining wall structure according to claim 1, wherein: many bored concrete pile (1) are followed retaining wall length direction evenly arranges.

6. The retaining wall structure according to claim 1, wherein: many bored concrete pile (1) are followed retaining wall width direction arranges two rows.

7. The retaining wall structure according to claim 2, wherein: the inter-pile plate (2) is of a reinforced concrete structure, and the steel bars (7) preset at the top of the inter-pile plate (2) and the bearing platform (3) are connected into an integral structure.

8. The retaining wall structure according to claim 1, wherein: the height of the inter-pile plate (2) is larger than or equal to 1m, and the thickness of the inter-pile plate (2) is larger than or equal to 50cm.

9. The retaining wall structure according to claim 2, wherein: the retaining wall further comprises a wall body (4) and toughened glass (5), wherein the wall body (4) and the toughened glass (5) are arranged along the length direction of the retaining wall; the wall body (4) is arranged at the top of the bearing platform (3), and the toughened glass (5) is arranged at the top of the wall body (4).