Support changing plate strip connecting structure for Larsen steel sheet pile enclosure and foundation slab

Abstract

The utility model provides a support changing plate strip connecting structure of a Larsen steel sheet pile enclosure and a foundation slab, a support changing plate strip is arranged on a foundation cushion layer, is arranged close to the Larsen steel sheet pile enclosure, and is used for connecting the Larsen steel sheet pile enclosure and the outer side of an outer wall of the foundation slab. The isolation material is arranged between the support replacing plate strip and the Larsen steel sheet pile enclosure, the waterproof material is continuously laid on the foundation bed and the support replacing plate strip, and the waterproof material is bent upwards when the foundation bed is transited to the upper surface of the support replacing plate strip so as to conduct waterproof sealing on the connecting position of the foundation bottom plate and the support replacing plate strip. According to the utility model, the waterproof material is prevented from being broken at the elevation position of the support changing plate belt, the bending and swelling of the waterproof material can be reduced, the waterproof quality of a basement foundation slab and an outer wall is ensured, the waste of the waterproof material is reduced, meanwhile, the requirement of horizontal force transmission of a peripheral temporary maintenance structure can be met, and the deformation of an enclosure structure is effectively controlled.

Description

Technical Field

[0001] The utility model relates to the field of building foundation pit support and foundation, in particular to a support plate belt connection structure of a Larsen steel sheet pile enclosure and a foundation bottom plate. Background Art

[0002] With the continuous development of urban construction, the number of engineering projects involving large-scale ground excavation operations is increasing. During the excavation of the foundation pit, in order to ensure the safety of surrounding buildings, roads, pipelines and other facilities, it is necessary to temporarily enclose the foundation pit. If necessary, internal supports are required to ensure the safety of the temporary enclosure system. In order to ensure the construction space for the waterproof and thermal insulation layer of the underground structure, a fertilizer trough of a certain width is usually reserved between the temporary enclosure and the outer wall of the basement. When the construction reaches a certain level and the main basement structure needs to be rebuilt, the temporary internal support will be removed. In order to ensure the safety of the enclosure structure and the smooth progress of subsequent construction, it is necessary to set a certain thickness of the replacement support plate belt before the removal of the internal support to improve the stiffness and horizontal force safety of the surrounding temporary enclosure. The replacement support plate belt is set in the fertilizer trough space, and the two ends are connected to the temporary enclosure and the outer wall of the basement respectively. The conventional connection method between the replacement plate belt and the foundation slab is to cast it together with the slab, and the external waterproof material is extended to the connection with the temporary enclosure, bent and turned up to the replacement plate belt, which will cause the external waterproof material to be interrupted at the elevation of the replacement plate belt. For projects with a higher waterproof grade for basements, since there are higher requirements for the waterproof effect of the building during the actual use stage, the replacement plate belt position will become a weak point for external waterproofing, and even have an adverse impact on the project's engineering quality and image. Especially for the case where Larsen steel sheet piles are used in the enclosure structure, such as Figure 3 As shown in the figure, due to the U-shaped undulations on the surface of the sheet pile, it is not only difficult to ensure the waterproof effect at the joint, but also may cause a waste of waterproof materials. If waterproofing is done on the side of the foundation slab, the conventional method requires the construction of brick membranes. However, the compressive strength of brick membrane blocks is very low, which is not conducive to the force transmission of the replacement support structure and cannot meet the horizontal force transmission requirements of the surrounding temporary maintenance structure, which will have an adverse effect on the deformation control of the enclosure structure. Utility Model Content

[0003] The purpose of the utility model is to provide a connection solution for the replacement support plate belt of Larsen steel sheet pile enclosure and foundation bottom plate in view of the deficiencies existing in the above-mentioned background technology, so as to solve the problems that it is difficult to ensure the external waterproof effect and the waterproof material is easily wasted at the replacement support plate belt position of the Larsen steel sheet pile support in the fertilizer trough, while ensuring the force transmission capacity of the replacement support plate belt and being able to effectively control the deformation of the Larsen steel sheet pile.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a connection structure of a Larsen steel sheet pile enclosure and a replacement plate belt for a foundation slab, comprising a Larsen steel sheet pile enclosure, a replacement plate belt, an isolation material, a waterproof material, a foundation cushion layer and a foundation slab, the replacement plate belt being arranged on the foundation cushion layer, the replacement plate belt being arranged close to the Larsen steel sheet pile enclosure, the replacement plate belt being used to connect the Larsen steel sheet pile enclosure and the outer side of the outer wall of the foundation slab, the isolation material being arranged between the replacement plate belt and the Larsen steel sheet pile enclosure, the waterproof material being continuously laid on the foundation cushion layer and the replacement plate belt, and the waterproof material being bent upward when transitioning from the foundation cushion layer to the upper surface of the replacement plate belt to waterproof and seal the connection between the foundation slab and the replacement plate belt.

[0005] Furthermore, the support plate replacement belt is arranged in the manure trough space between the outer side of the outer wall of the foundation slab and the Larsen steel sheet pile enclosure.

[0006] Furthermore, the support plate strip is a plain concrete support plate strip.

[0007] Furthermore, above the supporting plate belt, the waterproof material is closely attached to the supporting plate belt and has a reserved bend.

[0008] The above solution of the utility model has the following beneficial effects:

[0009] The utility model provides a connection structure of a Larsen steel sheet pile enclosure and a replacement plate belt of a foundation bottom plate, in which no waterproof material is laid between the replacement plate belt and the Larsen steel sheet pile enclosure. By eliminating the waterproof material between the replacement plate belt and the Larsen steel sheet pile enclosure, the waterproof material is replaced by being laid between the replacement plate belt and the outer side of the outer wall of the foundation bottom plate, thereby avoiding the interruption of the waterproof material at the replacement plate belt elevation position, and avoiding the U-shaped undulation of the Larsen steel sheet pile enclosure surface to reduce the waterproof effect, and can reduce the bending and bulging of the waterproof material, thereby ensuring the waterproof quality of the basement foundation bottom plate and the outer wall, and reducing the waste of waterproof material.

[0010] In the utility model, the brick membrane is cancelled when pouring the foundation bottom plate. First, the replacement support plate belt is poured, and the brick membrane is replaced by a plain concrete plate belt, thereby avoiding the brick membrane block becoming a weak point of force transmission of the replacement support structure, meeting the horizontal force transmission requirements of the surrounding temporary maintenance structure, and effectively controlling the deformation of the enclosure structure;

[0011] Other beneficial effects of the present invention will be described in detail in the subsequent specific implementation sections. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram for reserving waterproof materials before the construction of the foundation bottom plate in the utility model;

[0013] Figure 2It is a schematic diagram of the connection of the replacement support plate belt between the Larsen steel sheet pile enclosure and the foundation bottom plate in the utility model;

[0014] Figure 3 It is a schematic diagram of the plane positive and negative continuous U-shape of the Larsen steel sheet pile enclosure in the utility model.

[0015] [Description of Reference Numerals]

[0016] 1-Larsen steel sheet pile enclosure; 2-replacement support strip; 3-isolation material; 4-waterproof material; 5-foundation cushion layer; 6-foundation bottom plate; 7-exterior wall. DETAILED DESCRIPTION

[0017] In order to facilitate the understanding of the present application, the present application will be described more comprehensively with reference to the relevant drawings below. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0018] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0019] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application 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 application.

[0020] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0022] The embodiment of the utility model provides a Larsen steel sheet pile enclosure and a base plate replacement plate belt connection structure, comprising a Larsen steel sheet pile enclosure 1, a replacement plate belt 2, an isolation material 3, a waterproof material 4, a base cushion layer 5 and a base plate 6. Figure 1 As shown, the support strip 2 is arranged before the construction of the foundation slab 6. The support strip 2 is set close to the Larsen steel sheet pile enclosure 1, specifically, it is set in the fertilizer trough space between the outer wall 7 of the foundation slab 6 and the Larsen steel sheet pile enclosure 1. The lower layer of the support strip 2 is the foundation cushion layer 5, and isolation material is set between the support strip 2 and the Larsen steel sheet pile enclosure 1 to facilitate the later pile extraction. The waterproof material 4 is continuously pre-laid on the foundation cushion layer 5 and the support strip 2, and the waterproof material 4 is bent upward when transitioning from the foundation cushion layer 5 to the upper surface of the support strip 2.

[0023] At the same time Figure 2 As shown, the support strip 2 is used to connect the Larsen steel sheet pile enclosure 1 and the outer side of the outer wall 7 of the foundation bottom plate 6. The support strip 2 is cast by plain concrete, and the foundation bottom plate 6 is cast when the concrete strength of the support strip 2 reaches more than 80% of the design strength. For the waterproof material 4, it is bent upward along the support strip 2 at the connection between the foundation bottom plate 6 and the support strip 2; above the support strip 2, the waterproof material is close to the support strip 2 and a bend is reserved, and it can continue to be laid in a continuous overlap with the waterproof layer of the outer wall 7 later.

[0024] It should be noted that the solution provided in this embodiment does not lay the waterproof material 4 between the replacement support plate belt 2 and the Larsen steel sheet pile enclosure 1. By canceling the waterproof material 4 between the replacement support plate belt 2 and the Larsen steel sheet pile enclosure 1 and replacing it with laying it between the replacement support plate belt 2 and the outer side of the outer wall 7 of the foundation slab 6, the waterproof material 4 is avoided from being interrupted at the elevation position of the replacement support plate belt 2, and the U-shaped undulation of the surface of the Larsen steel sheet pile enclosure 1 is avoided to reduce the waterproof effect, and the bending and bulging of the waterproof material 4 can be reduced, thereby ensuring the waterproof quality of the basement foundation slab 6 and the outer wall 7, and reducing the waste of the waterproof material 4.

[0025] It should be noted that in the present embodiment, the brick membrane is cancelled when pouring the foundation slab 6. First, the replacement support plate 2 is poured, and the brick membrane is replaced by a plain concrete plate, thereby avoiding the brick membrane blocks becoming the weak point of force transmission of the replacement support structure, and being able to meet the horizontal force transmission requirements of the surrounding temporary maintenance structure and effectively control the deformation of the enclosing structure.

[0026] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A Larsen steel sheet pile enclosure and a base plate replacement plate belt connection structure, characterized in that: The invention comprises a Larsen steel sheet pile enclosure (1), a supporting plate belt (2), an isolation material (3), a waterproof material (4), a foundation cushion layer (5) and a foundation bottom plate (6), wherein the supporting plate belt (2) is arranged on the foundation cushion layer (5), the supporting plate belt (2) is arranged close to the Larsen steel sheet pile enclosure (1), the supporting plate belt (2) is used to connect the Larsen steel sheet pile enclosure (1) and the outer side of the outer wall (7) of the foundation bottom plate (6), the isolation material (3) is arranged between the supporting plate belt (2) and the Larsen steel sheet pile enclosure (1), the waterproof material (4) is continuously laid on the foundation cushion layer (5) and the supporting plate belt (2), and the waterproof material (4) is bent upward when transitioning from the foundation cushion layer (5) to the upper surface of the supporting plate belt (2) to waterproof and seal the connection between the foundation bottom plate (6) and the supporting plate belt (2).

2. The Larsen steel sheet pile enclosure and the base plate replacement plate belt connection structure according to claim 1 is characterized in that: The support plate replacement belt (2) is arranged in the manure trough space between the outer side of the outer wall (7) of the foundation slab (6) and the Larsen steel sheet pile enclosure (1).

3. The connection structure of the Larsen steel sheet pile enclosure and the base plate according to claim 1 is characterized in that: The support plate belt (2) is a plain concrete support plate belt (2).

4. The Larsen steel sheet pile enclosure and the base plate replacement plate belt connection structure according to claim 1 is characterized in that: Above the supporting plate belt (2), the waterproof material (4) is closely attached to the supporting plate belt (2) and is reserved for bending.

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