CN110258621B

CN110258621B - Assembled retaining wall convenient to quick construction

Info

Publication number: CN110258621B
Application number: CN201910361482.6A
Authority: CN
Inventors: 原育兵; 方涛
Original assignee: China MCC20 Group Corp Ltd; Shanghai Ershiye Construction Co Ltd
Current assignee: China MCC20 Group Corp Ltd; Shanghai Ershiye Construction Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2021-03-26
Anticipated expiration: 2039-04-30
Also published as: CN110258621A

Abstract

The invention particularly relates to an assembled retaining wall which is convenient for rapid construction; the method is characterized in that: the structure of the assembled retaining wall comprises a foundation, standard slabs, longitudinal force transfer rods, transverse force transfer rods and water drainage holes; the retaining wall is formed by sequentially arranging a plurality of standard slabs, wherein the standard slabs are connected by a transverse dowel bar and are used for transmitting and balancing the stress of the standard half slabs; the thrust force borne by the whole retaining wall is transmitted to the foundation through the foundation soil and the foundation. This assembled retaining wall can effectively improve the efficiency of construction under the prerequisite of guaranteeing construction quality to this assembled retaining wall can satisfy the requirement of various topography, geology. Simultaneously, this assembled retaining wall's footing upper portion is the plane, can set up facilities such as view, road, can not produce obvious influence to the barricade load, still can improve the stability of barricade.

Description

Assembled retaining wall convenient to quick construction

Technical Field

The invention relates to the field of civil engineering, in particular to an assembled retaining wall convenient for rapid construction.

Background

The current construction project planning all relates to the utilization in underground space, therefore large-scale basement foundation ditch construction extensively exists in the construction, in the foundation ditch construction, under the condition that has enough construction place, adopts the requirement of large-opening foundation ditch to excavation supporting simple, can practice thrift the cost greatly. However, even in a construction site with a wide site, the construction site cannot be placed on a slope naturally without limit, and various temporary facilities need to be arranged after competition. Meanwhile, even if a natural slope is used, facilities such as safety slope, slope protection and the like and essential basic support are still considered. When the temporary slope design is selected, safe slope releasing and slope maintenance are considered, and plane coordination of a construction site is also considered. The building plane layout of a construction project under the condition of a sloping field needs to be combined with permanent slope support and the like, namely, the project use requirements need to be met, the reasonable utilization of the land and the coordination of planning and layout need to be met, and the design and selection of the slope support type are involved.

Disclosure of Invention

The invention aims to provide an assembled retaining wall which can meet various site requirements and ensure construction quality and efficiency and is convenient for rapid construction.

In order to achieve the above object, the present invention is realized by:

the utility model provides an assembled retaining wall convenient to quick construction, characterized by: the structure of the assembled retaining wall comprises a foundation, standard slabs, longitudinal force transfer rods, transverse force transfer rods and water drainage holes; the retaining wall is formed by sequentially arranging a plurality of standard slabs, wherein the standard slabs are connected by a transverse dowel bar and are used for transmitting and balancing the stress of the standard slabs; the thrust borne by the whole retaining wall is transmitted to the foundation through the foundation soil and the foundation;

the construction method and the stress mechanism of the assembled retaining wall convenient for quick construction comprise the following steps:

step 1, determining selected or designed standard plates according to the rock and soil characteristics and the slope height of geological survey data and performing factory prefabrication;

step 2, excavating earthwork on site, constructing a foundation, wherein a pile foundation needs to be additionally arranged, and the pile foundation is constructed before excavation so as to shorten the side slope exposure time;

step 3, leveling the retaining wall substrate, hoisting the retaining wall plates in sequence, inserting the dowel bars while positioning, and filling asphalt cement into the front holes by inserting the transverse dowel bars;

step 4, backfilling the lower plate according to the mounting sequence of the plates, and correcting the plates while backfilling;

step 5, penetrating a flexible sleeve of a longitudinal force transmission rod plate;

step 6, penetrating a steel reinforcement cage for grouting or tensioning and sealing a prestressed steel cable;

step 7, backfilling the whole body, and greening the upper drainage ditch and the slope;

step 8, after the construction is basically stable, grouting and caulking the joints among the plates and between the plates and the foundation by using flexible materials;

because the soil-facing surface and the bottom surface of the retaining wall form a cutting angle relative to the depth of a soil body, the horizontal thrust of the soil body is converted into pressure which is downward and oblique to foundation soil after being transmitted to the retaining wall, so that the overturning force and the horizontal stress born by the retaining wall are solved, the residual horizontal stress is transmitted to a foundation embedded in a foundation, and the horizontal pushing of the retaining wall is prevented; under the condition that the self strength of the retaining wall sheet is enough, the retaining wall does not have an anchoring section and does not bear double stress, so that the deformation monitoring requirement in the use process is not high, and generally only visual observation is needed; in order to realize rapid construction and reuse, the standard slab of the retaining wall can be made of steel or other high-strength materials, as well as reinforced concrete; for the retaining wall with larger stress, the plate sheets can be provided with reinforcing ribs during design and manufacture, and a secondary or multistage retaining wall is constructed according to the site plane condition and the side slope height so as to adapt to the requirement of a high side slope.

This assembled retaining wall can effectively improve the efficiency of construction under the prerequisite of guaranteeing construction quality to this assembled retaining wall can satisfy the requirement of various topography, geology. Simultaneously, this assembled retaining wall's footing upper portion is the plane, can set up facilities such as view, road, can not produce obvious influence to the barricade load, still can improve the stability of barricade.

Drawings

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

FIG. 2 is a schematic view of the construction of the retaining wall as a secondary retaining wall.

Fig. 3 is a schematic diagram of the plate structure of the retaining wall.

Fig. 4 is a side view of the plate structure of the retaining wall.

Fig. 5 is a schematic side view (two or more stages) of the plate structure of the retaining wall.

FIG. 6 is a schematic front and side view of a ribbed retaining wall plate.

FIG. 7 is a schematic diagram of the force transfer structure between the retaining wall and the foundation.

FIG. 8 is a schematic view of the force transfer structure of the retaining wall and the lower retaining wall.

Fig. 9 is a schematic view of the construction of a retaining wall longitudinal dowel bar.

Fig. 10 is a schematic view of a reinforcement cage structure when the retaining wall longitudinal dowel bar is made of reinforced concrete.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1 to 2, the retaining wall is constructed rapidly, and the retaining wall slope includes 1 retaining wall slab, 2 retaining wall slab (two or more stages), 3 foundation, 4 gravel filter bag, 5 backfill, 6 drainage ditch, 7 longitudinal force transfer rod, 8 water drainage hole, 9 transverse force transfer rod, 10 transverse force transfer rod (two or more stages), 11 retaining wall slab reinforcing rib, 12 high strength plate flexible PE pipe. The

retaining wall sheets

1 and 2 and the longitudinal force transmission rods 2 form a retaining wall body, and the retaining wall body, the foundation 3, the transverse force transmission rods 9, the foundation and the back filling 5 form a retaining wall system.

The use method of the rapid construction retaining wall comprises the following steps:

and after the earth excavation is finished, the standard retaining wall plates 1 are longitudinally arranged in one direction after the base is cleaned and treated. The slab is poured into asphalt factice in the reserved hole of the transverse dowel bar before hoisting, the reserved hole is inserted into the reserved dowel bar steel bar of the foundation during hoisting, the position is adjusted, and secondary grouting can be performed by grouting material or low-grade mortar after the slab footing is leveled with the foundation when the contact between the slab footing and the foundation is poor so as to ensure that the slab and the foundation are stably contacted. When the slab is hoisted in place for one section, the slab penetrates into the plate flexible sleeve 12 of the longitudinal dowel bar 7, meanwhile, back soil backfilling is carried out, the backfilling soil is required to be as compact as possible, and a gravel filter bag 4 is required to be arranged when the backfilling soil is backfilled to the height close to the water drainage hole. After the retaining wall is finished and the preliminary backfill is checked, the construction of the rod core of the longitudinal dowel bar is carried out, if the deformation of the back soil in the later period is large and uneven, the dowel bar can adopt a prestressed steel cable, when the stress of the soil body is even, reinforced concrete can be used, and the manufacturing of a reinforcement cage can refer to the attached drawing 10. And when the strength of the concrete of the longitudinal dowel bar meets the requirement, finishing the side slope at the upper part of the retaining wall, and constructing a drainage ditch 6. The gap between the sheets can be caulked by asphalt paste or neutral building sealant, and the gap between the sheets and the foundation can be caulked by asphalt mortar.

When a second-level or multi-level side slope is adopted, the higher-level retaining wall can be constructed without waiting for the grouting of the dowel bars of the lower-level side slope, and only foundation soil needs to be tamped and filled compactly, for example, the higher-level retaining wall is constructed after the dowel bars are grouted, and the construction is carried out after the grouted concrete reaches certain strength.

The upper part of the retaining wall footing is a plane, facilities such as landscape, roads and the like can be arranged, the load of the retaining wall cannot be obviously influenced, and the stability of the retaining wall can be improved. When the foundation is coated with road and other covering layers, the root of the wall plate is provided with a drainage ditch to ensure the drainage of the drainage holes and the daily drainage of the ground surface.

Claims

1. The utility model provides an assembled retaining wall convenient to quick construction, characterized by: the structure of the assembled retaining wall comprises a foundation, standard slabs, longitudinal force transfer rods, transverse force transfer rods and water drainage holes; the retaining wall is formed by sequentially arranging a plurality of standard slabs, wherein the standard slabs are connected by a transverse dowel bar and are used for transmitting and balancing the stress of the standard slabs; the thrust borne by the whole retaining wall is transmitted to the foundation through the foundation soil and the foundation;