Structure for reducing differential settlement of underground space by using enclosure structure

Abstract

The utility model belongs to the technical field of engineering construction, and particularly relates to a structure for reducing differential settlement of an underground space by utilizing an enclosure structure, which comprises an underground space main body structure, a plurality of side walls and a bottom plate, underground space structure beams are arranged on the underground space main body structure top plate and the underground space main body structure bottom plate, and an underground space structure column is vertically arranged between the two underground space structure beams which correspond to each other up and down; the enclosure structure is tightly attached to the side wall of the underground space main body structure; a top beam is arranged at the top of the enclosure structure; the bracket foundation is fixed to the side, facing the underground space main body structure, of the enclosure structure and located under the side wall of the underground space main body structure and the bottom plate of the underground space main body structure. The utility model can solve the problem of structural differential settlement caused by large load difference of the bearing stratum of the foundation or the upper part and the like, and has better economic benefit and better market application prospect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of engineering construction, specifically relates to a structure for reducing uneven settlement of underground space by using enclosure structure. BACKGROUND

[0002] When the ground bearing stratum of underground space structure or the upper load difference is large and it is inconvenient to set a deformation joint, differential settlement is easily caused, and corresponding measures need to be taken for the structural foundation scheme. At present, there are many research results in China. The patent with publication number CN109214070A discloses a leveling method for pile foundation of main-skirt connected high-rise building, which proposes to adjust the support stiffness distribution of pile soil to make the settlement tend to be uniform. The patent with publication number CN116090054A discloses a ground layout method and device for deep overburden layer rigid dam, which proposes to use different layout of high-pressure rotary jet grouting piles to reduce differential settlement. The paper "New Progress of Differential Settlement Control Technology of Main-skirt Building" (Construction Technology (English and Chinese), 2021.07) also proposes to adjust uneven settlement by changing pile spacing and pile length. These technical achievements mostly adopt pile foundation or ground treatment forms, and propose technical measures to effectively reduce structural differential settlement. However, these technical measures are still expensive, and there is room for improvement in green construction and saving engineering investment.

[0003] Based on the above deficiencies, the utility model provides a structure for reducing uneven settlement of underground space by using enclosure structure, which effectively solves the problem of structural differential settlement caused by large difference in ground bearing stratum or upper load, and has good economic benefits.

[0004] The information disclosed in the background section of this document is intended only to increase an understanding of the general background of the present utility model and should not be construed as recognizing or implying that this information constitutes prior art that forms a part of the commonly held general knowledge of those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a structure for reducing uneven settlement of underground space by using enclosure structure, which solves the problem of structural differential settlement caused by large difference in ground bearing stratum or upper load, and has good economic benefits.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0007] A structure for reducing uneven settlement of underground space by using enclosure structure, comprising:

[0008] The underground space main structure comprises a top plate, side walls and a bottom plate; the top plate and the bottom plate are provided with underground space structure beams, and underground space structure columns are vertically arranged between two underground space structure beams corresponding in position;

[0009] The enclosure structure is tightly attached to the side walls of the underground space main structure; a corbel beam is arranged on the top of the enclosure structure;

[0010] The corbel foundation is fixed to the side of the enclosure structure facing the underground space main structure and is located directly below the side walls and the bottom plate of the underground space main structure.

[0011] Preferably, the underground space main structure, the enclosure structure and the corbel foundation are cast-in-situ reinforced concrete structures.

[0012] Preferably, the enclosure structure adopts bored piles or underground continuous walls.

[0013] Preferably, the enclosure structure is provided with connecting steel bars of the corbel foundation on the reinforcement cage.

[0014] Preferably, the underground space main structure is further provided with a structural foundation below the bottom plate; the structural foundation adopts a column-independent foundation or a settlement-reducing pile and corresponds to the underground space structure column in position.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] (1) The structure for reducing uneven settlement of the underground space by using the enclosure structure sets the corbel foundation on the enclosure structure to support the underground space main structure, and adopts a column-independent foundation and other structures for transition, so that the differential settlement of the main structure can be effectively reduced.

[0017] (2) The structure for reducing uneven settlement of the underground space by using the enclosure structure fully utilizes the vertical bearing capacity of the enclosure structure, can effectively solve the problem of structural differential settlement caused by large differences in the bearing stratum of the foundation or the upper load, and has good economic benefits and can reduce the engineering investment. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 is a plane layout schematic diagram of the utility model;

[0019] Fig. 2 is a transverse section schematic diagram of the utility model;

[0020] MAIN REFERENCE MARK EXPLANATION:

[0021] 1, enclosure structure; 1a, corbel beam; 1b, corbel foundation;

[0022] 2. The side wall of the underground space main structure; 2a, the roof of the underground space main structure; 2b, the floor of the underground space main structure;

[0023] 3. The structure foundation;

[0024] 4. The underground space structure column;

[0025] 5. The underground space structure beam. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the skilled in the art without creative labor belong to the protection scope of the utility model.

[0027] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by terms such as 'center', 'upper', 'lower', 'left', 'right','vertical', 'horizontal', 'inner', 'outer' and the like is the orientation or position relationship based on the drawing shown, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model.

[0028] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, terms such as'mounting', 'connection', 'connecting' should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or the connection inside two elements. For the skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] Referring to the drawings Figs. 1-2 A structure for reducing uneven settlement of underground space by using enclosure structure, comprising: underground space main structure, enclosure structure 1 and corbel foundation 1b. Wherein,

[0030] The underground space main structure is cast-in-place reinforced concrete structure, comprising roof, side wall and floor; the underground space structure beam 5 is arranged on the underground space main structure roof 2a and the underground space main structure floor 2b, and the underground space structure column 4 is vertically arranged between the two underground space structure beams 5 corresponding in position;

[0031] The enclosure 1 is a cast-in-place reinforced concrete structure, which is closely attached to the side wall 2 of the underground space main structure; the enclosure 1 can adopt bored piles or underground continuous walls, which are used for supporting and retaining soil of the foundation pit and providing vertical support force; the crown beam 1a is arranged at the top of the enclosure 1, and the bracket foundation 1b is reserved on the reinforcement cage of the enclosure 1; the embedment depth of the enclosure 1 needs to consider over-excavation of the bracket foundation 1b, and the enclosure 1 is implemented before the foundation pit is excavated;

[0032] The bracket foundation 1b is a cast-in-place reinforced concrete structure, which is used for directly providing vertical support to the underground space main structure; the bracket foundation 1b is located directly below the side wall 2 of the underground space main structure and the bottom plate 2b of the underground space main structure, and is rigidly connected with the enclosure 1 through the reserved connecting reinforcement on the reinforcement cage of the enclosure 1.

[0033] After the foundation pit is excavated to the base elevation, the protective layer of the enclosure 1 is removed, the reserved connecting reinforcement is bent out, and then the bracket foundation 1b is implemented. The bracket foundation 1b can be arranged along the direction of the side wall 2 of the underground space main structure or can be arranged locally, and the size and reserved reinforcement specification of the bracket foundation 1b are determined according to the bearing capacity requirement.

[0034] In the embodiment, the underground space main structure can not be provided with a settlement joint. In order to reduce the differential settlement of the structure, the structural foundation 3 needs to be arranged at a proper position according to calculation, so as to ensure that the differential settlement meets the requirement; the structural foundation 3 can adopt a column-independent foundation or a settlement-reducing pile, etc. The structural foundation 3 is arranged below the bottom plate 2b of the underground space main structure and corresponds to the position of the underground space structure column 4.

[0035] In actual construction, the following steps are implemented:

[0036] (1) The enclosure 1 is constructed, and the bracket foundation 1b connecting reinforcement is reserved on the reinforcement cage of the enclosure 1;

[0037] (2) After excavation to the base, the protective layer of the enclosure 1 at the position of the bracket foundation 1b is removed, and the bracket foundation 1b connecting reinforcement is bent out;

[0038] (3) The bracket foundation 1b reinforcement is bound, the contact surface between the new and old structures is treated, the bracket foundation 1b concrete is poured and cured;

[0039] (4) The independent foundation or pile foundation under the underground space structure column 4 is implemented.

[0040] (5) The waterproof and the bottom plate, side wall and top plate structures are constructed.

[0041] The structure for reducing uneven settlement of underground space by using the enclosure structure effectively solves the structural differential settlement problem caused by the great difference of the foundation bearing stratum or upper load, and has good economic benefits, is very practical, and has good market application prospect.

[0042] The foregoing description of the specific exemplary embodiments of the present application is for the purpose of illustration and example. These descriptions are not intended to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teachings. The specific exemplary embodiments were chosen and described in order to explain the particular principles of the application, and its practical application, and to thereby enable others skilled in the art to best utilize it and various embodiments with various modifications as are suited to the particular use contemplated. It is intended that the scope of the application be defined by the claims and their equivalents.

Claims

1. A structure for reducing uneven settlement of an underground space using a building envelope, characterized by, The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction.

2. The structure for reducing uneven settlement of an underground space using a building envelope according to claim 1, characterized in that, The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction.

3. The structure for reducing uneven settlement of an underground space using a building envelope according to claim 1, characterized in that, The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction.

4. The structure for reducing uneven settlement of an underground space using a building envelope according to claim 1, characterized in that, The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction.

5. The structure for reducing uneven settlement of an underground space using a building envelope according to claim 1, characterized in that, The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates to the technical field of underground space construction. The utility model relates to an underground space main body structure, a surrounding structure and a bracket foundation, and relates

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