CN115094950A - Construction method for enlarging external profile of underground structure - Google Patents
Construction method for enlarging external profile of underground structure Download PDFInfo
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- CN115094950A CN115094950A CN202210776278.2A CN202210776278A CN115094950A CN 115094950 A CN115094950 A CN 115094950A CN 202210776278 A CN202210776278 A CN 202210776278A CN 115094950 A CN115094950 A CN 115094950A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/0007—Base structures; Cellars
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0037—Clays
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B80/00—Architectural or constructional elements improving the thermal performance of buildings
- Y02B80/32—Roof garden systems
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention relates to the technical field of building construction, in particular to a construction method for enlarging the outer contour of an underground structure. A construction method for enlarging the outer contour of an underground structure, which is used for constructing the underground structure comprising at least two layers, comprises the following steps: simultaneously erecting a formwork of the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part, and then carrying out structural construction on the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part; and simultaneously erecting the formwork of the upper outer wall, the upper roof and the cantilever part of the roof, then carrying out structural construction of the upper outer wall, the upper roof and the cantilever part of the roof, and carrying out subsequent construction after dismantling the scaffold and the formwork of the cantilever part. The invention solves the problems that the construction organization difficulty is increased due to the defects of multiple insertion construction processes and long construction period in the underground structure construction, thereby providing a construction method for enlarging the external profile of the underground structure.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method for enlarging the outer contour of an underground structure.
Background
In the architectural design, designers often design two or more layers of underground structures to expand the use functions of the building (for example, the underground structures of markets and districts are mostly two layers, three layers or even more, and the functions are mainly storage, parking and the like). In consideration of the usage habit of people, the more functions of the underground structure, the more close to the ground, the larger the required usage area, so that the upper outer contour of the underground structure becomes larger gradually (i.e. the upper layer area of the underground structure is larger than the lower layer area, and the convex part with the upper layer area larger than the lower layer area can be regarded as "cantilever").
In the existing building construction, the construction process comprises the steps of dismantling a template after constructing a lower-layer outer wall, then backfilling a fertilizer groove after manufacturing a waterproof and protective layer of the outer wall, constructing an outer scaffold to construct a lower-layer top plate (including a cantilever), then performing waterproof and plastering construction, backfilling the fertilizer groove and the like. According to the construction process, the outer wall is firstly constructed in each layer to carry out operations such as waterproofing, a protective layer and a backfilling fertilizer groove, and then the top is subjected to operations such as waterproofing, a protective layer and a backfilling fertilizer groove, so that the problems of multiple alternate construction processes and long construction period exist in the whole process, the construction organization difficulty is increased, and even potential safety hazards can exist.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defects of multiple insertion construction processes and long construction period in the underground structure construction in the prior art, so that the construction organization difficulty is increased, and the construction method for enlarging the external outline of the underground structure is provided.
In order to solve the above problems, the present invention provides a method for constructing an underground structure having at least two layers, the method comprising:
simultaneously erecting a formwork of the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part, and then carrying out structural construction on the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part; and simultaneously erecting the formwork of the upper outer wall, the upper roof and the cantilever part of the roof, then carrying out structural construction of the upper outer wall, the upper roof and the cantilever part of the roof, and carrying out subsequent construction after dismantling the scaffold and the formwork of the cantilever part.
Optionally, an armpit is arranged at the junction of the overhanging part and the outer wall.
Optionally, the outer side of the outer wall, the surface of the overhanging part and the haunching inclined plane are all provided with waterproof layers.
Optionally, the structural construction includes steel bar binding, formwork erection and concrete construction.
Optionally, the subsequent construction comprises construction of a waterproof layer and a protective layer.
Optionally, the waterproof layer is a waterproof coating or a waterproof roll, and the protective layer is a coating or a hard plate.
Optionally, the underground structure is arranged in a foundation pit, a fertilizer tank is arranged between the foundation pit and the outer wall of the underground structure, and the fertilizer tank is cleaned and backfilled uniformly after the waterproof layer and the protective layer are constructed.
Optionally, the overhanging portion fertilizer groove is backfilled with a fluid material.
Optionally, the fluid material is fluid soil.
The technical scheme of the invention has the following advantages:
1. the invention provides a construction method for enlarging the external contour of an underground structure, which is used for constructing the underground structure comprising at least two layers and comprises the following steps: simultaneously erecting a formwork of the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part, and then carrying out structural construction on the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part to finish construction of the lower layer; and simultaneously erecting a formwork of the upper outer wall, the upper roof and the roof overhanging part, then carrying out structural construction of the upper outer wall, the upper roof and the roof overhanging part, finishing construction of the upper layer, and carrying out subsequent construction after dismantling the scaffold. In this construction method, accomplish lower floor's outer wall and roof structure construction earlier simultaneously, accomplish the structure construction of upper outer wall and upper roof simultaneously again, then demolish the scaffold frame and carry out follow-up construction again, avoid according to the construction mode of traditional "lower floor's outer wall → lower floor's roof → upper strata outer wall → upper roof", the construction process is less, the time limit for a project shortens, still can reduce the construction organization degree of difficulty simultaneously, realizes overhanging portion and roof integrated construction, has accelerated the structure construction speed of overhanging portion.
2. According to the construction method for enlarging the external contour of the underground structure, the haunching is arranged at the junction of the overhanging part and the outer wall, and the haunching means that the areas of two cross sections are enlarged at the corners of the integral structure, so that the connection between the overhanging part and the outer wall is enhanced, and the strength of the overhanging part is further enhanced. Meanwhile, the armpit is beneficial to the structural reinforcement of the overhanging part, the construction quality of the waterproof layer and the backfill construction process of the fluid soil to ensure that gas is effectively discharged, and the backfilling of the overhanging part is dense.
3. According to the construction method for enlarging the external contour of the underground structure, the waterproof layers are arranged on the outer side of the outer wall, the surface of the overhanging part and the haunching inclined plane, so that the waterproof construction quality of the building is ensured, the gas is effectively discharged in the fluid-state soil backfilling construction process, and the dense backfilling of the fluid-state soil at the overhanging part is ensured.
4. The invention provides a construction method for enlarging the external contour of an underground structure, which comprises the steps of binding reinforcing steel bars, erecting a template and constructing concrete, wherein the reinforcing steel bars are bound to form a framework, and the concrete (also called concrete) construction is carried out after the template is erected to form a main body part of the underground structure.
5. The construction method for enlarging the external profile of the underground structure comprises the following construction of a waterproof layer and a protective layer, wherein the waterproof layer is made of waterproof paint or waterproof coiled materials, the protective layer is made of a coating or a hard plate, and the construction of the protective layer is carried out outside the waterproof layer so as to realize the waterproofing and the protection of the underground structure.
6. According to the construction method for enlarging the external profile of the underground structure, the underground structure is arranged in the foundation pit, the fertilizer groove is arranged between the foundation pit and the outer wall of the underground structure, and the fertilizer groove is cleaned and backfilled uniformly after the waterproof layer and the protective layer are constructed.
7. According to the construction method for enlarging the external profile of the underground structure, the fertilizer tank is backfilled by using the fluid material, the fluid material is liquid soil, compared with a backfilling mode of plain soil or lime soil, a fluid soil conveying mode has the advantages that the waterproof material is well protected, the fluid soil is short in solidification time, certain strength and strong self-sealing performance and fluidity are achieved, rolling and tamping treatment by large-scale machinery are not needed during construction, construction cost and time are effectively saved, and surface water can be prevented from seeping along the junction of the underground structure and the liquid soil.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flow chart of a construction method for enlarging the outer contour of an underground structure according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but 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 thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of the method of constructing an underground structure as shown in fig. 1 includes: the foundation ditch is equipped with the underground structure of three-layer in the foundation ditch, and wherein, burden one deck area is greater than burden two layers area, burden two layers area is greater than burden three layers area, still is equipped with fertile groove between the outer wall of underground structure and foundation ditch.
In the construction process, on the basis that the valve plate construction is finished, the outer wall, the top plate and the formwork of the overhanging part of the negative three layers are built at the same time, and then the scaffold is built. After the scaffold is erected, performing structural construction such as steel bar binding, template building, concrete (also called concrete) construction and the like; then, simultaneously building a formwork of the outer wall, the top plate and the overhanging part of the negative two layers, and after the formwork is built, carrying out structural construction such as reinforcing steel bar binding, formwork building and concrete (also called concrete) construction; and finally, erecting a formwork of the outer wall, the top plate and the overhanging part of the negative layer, and after the formwork is erected, performing structural construction such as reinforcing steel bar binding, formwork building and concrete (also called concrete) construction. In order to further strengthen the strength of the wall body and the overhanging part, armpits are arranged at the wall body and the overhanging part. After the structural construction of the negative three-layer, the negative two-layer and the negative one-layer is finished, after the age of the concrete of the negative one-layer, the negative two-layer and the negative three-layer meets the formwork removal requirement, base layer treatment such as split bolt plugging is carried out, and then the scaffold and the formwork of the overhanging part are integrally dismantled from top to bottom.
In order to avoid the corrosion and damage to the outside of the underground structure, waterproof layers are arranged on the outer side of the outer wall of the underground structure, the surface of the overhanging part and the haunching inclined plane. Specifically, the waterproof layer is waterproof paint. In the concrete work progress, foundation ditch surface, the fertile groove that is close to the foundation ditch are according to normally being under construction to waterproof, adopt to cover sheet iron as the waterproof layer protective layer, and the underground structure at construction position presses the thin sheet iron of protective layer to scaffold frame one side when putting up the scaffold frame, treats that the scaffold frame of underground structure is demolishd the back and unify again and do the waterproof layer and seal. In order to further protect the underground structure, the outer side of the outer wall and the surface of the overhanging part are provided with protective layers, and particularly, the protective layers are coatings. After the waterproof layer and the protective layer are constructed, the fertilizer grooves are cleaned in a unified mode, and the whole backfilling work of the fertilizer grooves is carried out by adopting fluid soil in a comprehensive mode.
Alternatively, the number of layers of the underground structure may be 2, 4 or even more.
Alternatively, the negative one-layer area is equal to the negative two-layer area, which is equal to the negative three-layer area.
Alternatively, the waterproof layer may be a waterproof roll, and the protective layer may be a hard sheet.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (9)
1. A construction method for enlarging an outer contour of an underground structure for constructing an underground structure including at least two floors, comprising:
simultaneously erecting a formwork of the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part, and then carrying out structural construction on the lower-layer outer wall, the lower-layer top plate and the top plate cantilever part; and simultaneously setting up the formwork of the upper outer wall, the upper top plate and the top plate overhanging part, then carrying out structural construction on the upper outer wall, the upper top plate and the top plate overhanging part, and carrying out subsequent construction after dismantling the scaffold and the formwork of the overhanging part.
2. The method as claimed in claim 1, wherein an armpit is formed at a junction of the overhang portion and the outer wall.
3. The construction method for enlarging the outer contour of an underground structure as claimed in claim 2, wherein the outer side of the outer wall, the surface of the overhanging part and the inclined surface of the haunching part are provided with waterproof layers.
4. The construction method for enlarging the outer contour of an underground structure as claimed in claim 1, wherein the construction of the structure comprises the steps of binding reinforcing steel bars, erecting formworks and constructing concrete.
5. A method of constructing an underground structure with an enlarged external contour according to any one of claims 1 to 4, wherein the subsequent construction comprises the construction of a waterproof layer and a protective layer.
6. The construction method for enlarging the outer contour of an underground structure according to claim 5, wherein the waterproof layer is waterproof paint or waterproof coiled material, and the protective layer is a coating or a hard plate.
7. A construction method for enlarging the external contour of an underground structure as claimed in claim 5, wherein the underground structure is arranged in a foundation pit, a fertilizer groove is arranged between the foundation pit and the outer wall of the underground structure, and the fertilizer groove is cleaned and backfilled uniformly after the waterproof layer and the protective layer are constructed.
8. A method of constructing an underground structure with an increased external contour according to claim 7, wherein the overhanging portion trench is backfilled with a fluid material.
9. A method of constructing an enlarged exterior profile of a subterranean structure according to claim 8 wherein said fluid material is fluid soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210776278.2A CN115094950A (en) | 2022-06-29 | 2022-06-29 | Construction method for enlarging external profile of underground structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210776278.2A CN115094950A (en) | 2022-06-29 | 2022-06-29 | Construction method for enlarging external profile of underground structure |
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| CN115094950A true CN115094950A (en) | 2022-09-23 |
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| CN202210776278.2A Pending CN115094950A (en) | 2022-06-29 | 2022-06-29 | Construction method for enlarging external profile of underground structure |
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2022
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| RU2715497C1 (en) * | 2019-05-16 | 2020-02-28 | Открытое акционерное общество "Научно-исследовательский, проектно-изыскательский институт "Ленметрогипротранс" | Method of erection and arrangement of a single-span underground metro station of an open method of performing works |
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