L-shaped retaining wall structure

Abstract

The utility model discloses an L-shaped retaining wall structure which comprises a land parcel, the land parcel is provided with a supporting structure and a fixing and stabilizing structure, the supporting structure supports the fixing and stabilizing structure, a drainage structure is arranged in the fixing and stabilizing structure, and the fixing and stabilizing structure comprises an L-shaped retaining wall and two rows of miniature piles. The L-shaped retaining wall is simple in structure and reasonable in design, the filling weight of the L-shaped retaining wall is increased by arranging the large wall heel, and the anti-sliding stability of the L-shaped retaining wall is indirectly improved; according to the L-shaped retaining wall, the two rows of micro piles are arranged and inserted into the land parcel, the defect that the L-shaped retaining wall has no wall toe is overcome, the overturning resistance and the foundation bearing capacity of the L-shaped retaining wall are improved, excavation on the outer side can be greatly reduced, and the safety of surrounding houses or enclosing walls is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of highways and municipal roads, in particular to an L-shaped retaining wall structure. Background Art

[0002] With the continuous development of urban construction, highways and urban expressways are constantly being improved, but urban land is limited. It is often the case that the construction of urban roads is adjacent to the walls of residential communities. In many cases, in order to proceed with the construction project, it is necessary to demolish the houses set up on the walls, involving a large number of demolition projects, wasting manpower, material resources and money. These situations can be solved by setting up prefabricated light retaining walls.

[0003] Deficiencies of existing technology:

[0004] Currently, the use of prefabricated retaining walls can save construction time and reduce excavation, but the stability is poor and the height should not be too high; the use of conventional prefabricated lightweight retaining walls, in order to be reasonable in force, usually set larger wall heels and wall toes to ensure the stability of the retaining wall, but the excavation of the larger wall toe will affect the safety of the wall or building under certain circumstances. Utility Model Content

[0005] The purpose of the utility model is to provide an L-shaped retaining wall structure to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: an L-shaped retaining wall structure, comprising a plot, wherein the plot is provided with a supporting structure and a stabilizing structure, wherein the supporting structure supports the stabilizing structure, wherein a drainage structure is provided in the stabilizing structure, and wherein the stabilizing structure comprises:

[0007] An L-shaped retaining wall, the L-shaped retaining wall being arranged on the supporting structure and on the plot;

[0008] Two rows of micro piles are vertically and parallelly arranged on the L-shaped retaining wall and on the land plot.

[0009] Preferably, the support structure comprises:

[0010] A crushed stone cushion layer, the crushed stone cushion layer is arranged at the bottom of the plot, and the crushed stone cushion layer is arranged below the L-shaped retaining wall;

[0011] A concrete cushion layer, the concrete cushion layer is arranged closely above the crushed stone cushion layer, and the concrete cushion layer is arranged below the L-shaped retaining wall;

[0012] Foundation backfill soil, the foundation backfill soil is arranged above the concrete cushion layer;

[0013] Roadbed backfill material, the roadbed backfill material is arranged above the foundation backfill soil.

[0014] Preferably, the drainage structure comprises:

[0015] A formed drainage plate, wherein the formed drainage plate is arranged between the L-shaped retaining wall and the roadbed backfill material;

[0016] A drain pipe is connected to the molded drainage board and the two rows of micro piles.

[0017] Preferably, the crushed stone cushion layer is 30 cm graded crushed stone, and the concrete cushion layer is 20 cm C30 concrete.

[0018] Preferably, the diameter of the two rows of micropiles is 140 mm.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] The L-shaped retaining wall structure is provided with a stabilizing structure, which includes an L-shaped retaining wall and two rows of micro piles. The L-shaped retaining wall is provided with a larger wall heel to increase the fill weight of the L-shaped retaining wall, thereby indirectly increasing the anti-sliding stability of the L-shaped retaining wall. By providing two rows of micro piles and inserting them into the land, the disadvantage of the L-shaped retaining wall having no wall toe is solved, the anti-overturning property and foundation bearing capacity of the L-shaped retaining wall are improved, and the excavation of the outer side can be greatly reduced to avoid affecting the safety of surrounding houses or walls.

[0021] The L-shaped retaining wall structure is provided with a drainage structure, which includes a formed drainage plate and a drainage pipe. The formed drainage plate is arranged between the L-shaped retaining wall and the roadbed backfill material. The drainage pipe connects the formed drainage plate and two rows of micro piles to improve the drainage system capacity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] In the figure: 110, plot; 121, L-shaped retaining wall; 122, two rows of micro piles; 131, crushed stone cushion layer; 132, concrete cushion layer; 133, foundation backfill; 134, roadbed backfill; 141, formed drainage board; 142, drain pipe; 150, sidewalk pavement; 160, sidewalk guardrail. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "setting" should be understood in a broad sense, for example, it can be fixed connection, setting, or detachable connection, setting, or integrated connection, setting. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "several" is two or more, unless otherwise clearly and specifically defined. Example

[0028] See also Figure 1 As shown, the utility model provides a technical solution of an L-shaped retaining wall structure: including a plot 110, the plot 110 is cast with a supporting structure and a stabilizing structure, the supporting structure supports the stabilizing structure, the stabilizing structure is provided with a drainage structure, the stabilizing structure includes an L-shaped retaining wall 121 and two rows of micro piles 122, the L-shaped retaining wall 121 is cast above the supporting structure and cast on the plot 110, the two rows of micro piles 122 are vertically and parallelly inserted in the L-shaped retaining wall 121 and inserted into the plot 110, the L-shaped retaining wall 121 increases the fill weight of the L-shaped retaining wall 121 by providing a larger wall heel, thereby indirectly increasing the anti-slip stability of the L-shaped retaining wall 121; by providing two rows of micro piles 122 and inserting them into the plot 110, the disadvantage of the L-shaped retaining wall 121 having no wall toe is solved and the anti-overturning property and foundation bearing capacity of the L-shaped retaining wall 121 are improved.

[0029] Furthermore, the supporting structure includes a crushed stone cushion layer 131, a concrete cushion layer 132, a foundation backfill 133 and a roadbed backfill 134. The crushed stone cushion layer 131 is cast at the bottom of the plot 110, the crushed stone cushion layer 131 is cast below the L-shaped retaining wall 121, the concrete cushion layer 132 is cast closely above the crushed stone cushion layer 131, the concrete cushion layer 132 is cast below the L-shaped retaining wall 121, the foundation backfill 133 is cast above the concrete cushion layer 132, and the roadbed backfill The material 134 is poured on the top of the foundation backfill 133, the surface of the roadbed backfill 134 is provided with a sidewalk pavement 150, and the L-shaped retaining wall 121 is provided with a sidewalk guardrail 160; during construction, the foundation of the L-shaped retaining wall 121 is excavated first, the depth of the plot 1101m~1.5m is excavated, and the side template of the concrete is used as a temporary support on the side close to the plot 110 to achieve effective utilization of resources; then 30cm graded crushed stone is backfilled as the crushed stone cushion 131, and then 20cm graded crushed stone is backfilled The cmC30 concrete cushion layer 132 is used as the base for supporting the formwork and setting up the steel bars of the L-shaped retaining wall 121; then the steel bars are tied and the formwork is erected; then two rows of micro piles 122 are set, and the lengths of the two rows of micro piles 122 are determined according to the bearing capacity, settlement and anti-overturning stability calculation of the L-shaped retaining wall 121. The diameter of the two rows of micro piles 122 is 140 mm. The bearing capacity of the L-shaped retaining wall 121 is obtained by a composite base bearing capacity calculation method, and the settlement is determined by a layered total method. The contact point between the outer side of the L-shaped retaining wall 121 and the soil is taken as the base point to calculate the anti-overturning stability, that is, the anti-overturning moment or overturning moment; then the concrete of the L-shaped retaining wall 121 is poured; finally, after the concrete strength of the L-shaped retaining wall 121 reaches more than 75%, the foundation backfill soil 133 and the roadbed backfill material 134 are filled; the setting of the L-shaped retaining wall 121 can greatly reduce the excavation of the outer side and avoid affecting the safety of surrounding houses or walls.

[0030] Furthermore, the drainage structure includes a formed drainage plate 141 and a drainage pipe 142. The formed drainage plate 141 is installed between the L-shaped retaining wall 121 and the roadbed backfill material 134. The drainage pipe 142 connects the formed drainage plate 141 and two rows of micropiles 122 to improve the drainage system capacity.

[0031] Furthermore, if the L-shaped retaining wall 121 is relatively high, foam lightweight soil may be used for backfilling.

[0032] The working principle of the utility model is as follows:

[0033] When an L-shaped retaining wall structure of the present embodiment is used, the foundation of the L-shaped retaining wall 121 is first excavated, the depth of the plot 1101m~1.5m is excavated, and one side of the concrete formwork is used as a temporary support on the side close to the plot 110 to achieve effective utilization of resources; then 30cm graded crushed stone is backfilled as a crushed stone cushion layer 131, and then 20cmC30 concrete cushion layer 132 is backfilled as a base for supporting the formwork of the L-shaped retaining wall 121 and setting up steel bars; then the steel bars are tied and the formwork is erected; then two rows of micro piles 122 are set, and the lengths of the two rows of micro piles 122 are determined according to the bearing capacity, settlement and anti-overturning stability of the L-shaped retaining wall 121. Qualitative calculations determined that the diameter of the two rows of micropiles 122 was 140 mm, the bearing capacity of the L-shaped retaining wall 121 was calculated using a composite base bearing capacity calculation method, and the settlement was determined using a layered totalization method. The contact point between the outer side of the L-shaped retaining wall 121 and the soil was used as a base point to calculate the anti-overturning stability, i.e., the anti-overturning moment or overturning moment. Then, the concrete of the L-shaped retaining wall 121 was poured. Finally, after the concrete strength of the L-shaped retaining wall 121 reached more than 75%, the foundation backfill 133 and the roadbed backfill 134 were filled. Setting up the L-shaped retaining wall 121 can greatly reduce the excavation of the outer side, and avoid affecting the safety of surrounding houses or walls.

[0034] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An L-shaped retaining wall structure, comprising a land block (110), characterized in that: The plot (110) is provided with a supporting structure and a stabilizing structure, wherein the supporting structure supports the stabilizing structure, wherein a drainage structure is provided in the stabilizing structure, and the stabilizing structure comprises: An L-shaped retaining wall (121), the L-shaped retaining wall (121) being arranged on the supporting structure and on the plot (110); Two rows of micro piles (122), the two rows of micro piles (122) are arranged vertically and parallely on the L-shaped retaining wall (121) and on the land plot (110).

2. The L-shaped retaining wall structure according to claim 1, characterized in that: The support structure comprises: A crushed stone cushion layer (131), the crushed stone cushion layer (131) being arranged at the bottom of the plot (110), and the crushed stone cushion layer (131) being arranged below the L-shaped retaining wall (121); A concrete cushion layer (132), the concrete cushion layer (132) being arranged closely above the crushed stone cushion layer (131), and the concrete cushion layer (132) being arranged below the L-shaped retaining wall (121); Foundation backfill soil (133), the foundation backfill soil (133) being arranged above the concrete cushion layer (132); A roadbed backfill material (134), wherein the roadbed backfill material (134) is arranged above the foundation backfill soil (133).

3. The L-shaped retaining wall structure according to claim 2, characterized in that: The drainage structure comprises: A shaped drainage plate (141), wherein the shaped drainage plate (141) is arranged between the L-shaped retaining wall (121) and the roadbed backfill material (134); A drainage pipe (142), wherein the drainage pipe (142) connects the molded drainage board (141) and the two rows of micro piles (122).

4. The L-shaped retaining wall structure according to claim 2, characterized in that: The crushed stone cushion layer (131) is 30 cm graded crushed stone, and the concrete cushion layer (132) is 20 cm C30 concrete.

5. The L-shaped retaining wall structure according to claim 1, characterized in that: The diameter of the two rows of micropiles (122) is 140 mm.

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