CN111485578A - Stepped edge forward and backward building construction method - Google Patents
Stepped edge forward and backward building construction method Download PDFInfo
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- CN111485578A CN111485578A CN202010332230.3A CN202010332230A CN111485578A CN 111485578 A CN111485578 A CN 111485578A CN 202010332230 A CN202010332230 A CN 202010332230A CN 111485578 A CN111485578 A CN 111485578A
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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
- E02D29/05—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 at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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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
- E02D29/05—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 at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—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 at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- General Engineering & Computer Science (AREA)
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
A construction method for a stepped edge along with an edge in a reverse direction comprises the following steps: s1, reversing the vertical supporting members of the peripheral reverse construction area; s2, constructing horizontal supporting members which are also used as structural beam plates in the peripheral reverse region by using a reverse method, and forming a closed-loop horizontal supporting system at the periphery of the main building; s3, reserving counter-pressure soil in the peripheral reverse construction area according to the deformation requirement of the foundation pit, and excavating the main building area to the substrate by adopting multi-level slope releasing; s4, sequentially constructing the main building area structure, and when the beam slab structures of all layers of the sequentially constructed main building and the beam slab structures of all layers of the corresponding peripheral reverse construction form a whole, constructing upwards in the main building and simultaneously constructing downwards reversely to construct the underground structure of the peripheral reserved soil slope area of the main building. The invention saves a large amount of temporary supporting work, improves the unearthing efficiency and greatly accelerates the construction progress. In the peripheral reverse construction stage, the large space opening of the main building forward construction area can obviously improve the ventilation and lighting conditions of underground construction operation.
Description
Technical Field
The invention relates to the technical field of buildings, in particular to a stepped construction method with a forward side and a reverse side.
Background
The general field of construction uses a sequential approach, i.e. from the bottom floor upwards to the top floor, which is generally applicable to areas with a relatively simple environment and few underground floors. In the prior art, a reverse construction method is adopted under the special conditions of deep foundation, complex geology, high underground water level, strict requirements on surrounding environment and the like, namely, an underground continuous wall or other supporting structures are reversely constructed along the axis or the periphery of a basement of a building, and simultaneously, supporting piles and steel upright posts are reversely constructed to serve as vertical members for bearing the self weight and the construction load of an upper structure before the bottom plate is sealed during construction; and then excavating the earthwork to the elevation of the bottom surface of the basement of the first layer, completing the beam slab floor structure of the layer, serving as a horizontal support system, and then excavating the earthwork downwards layer by layer and pouring underground beam slab structures of each layer until the bottom plate is sealed.
Generally, the single reverse construction method results in a long construction period due to low unearthing efficiency, and the reverse construction method project with a main building is difficult to achieve the purpose of constructing the main building above the ground in advance. In view of the above requirements, there is a need for a construction method that can improve construction speed, reduce construction cost, and ensure building safety in a complex environment.
Disclosure of Invention
In order to realize that the construction speed can be improved, the construction cost can be reduced and the construction safety can be ensured under the complex environment, the invention provides the stepped construction method for the building with the forward and reverse sides. The invention adopts the following technical scheme:
a construction method for a stepped edge along with an edge in a reverse direction comprises the following steps:
s1, reversing the vertical supporting members of the peripheral reverse construction area;
s2, constructing horizontal supporting members which are also used as structural beam plates in the peripheral reverse region by using a reverse method, and forming a closed-loop horizontal supporting system at the periphery of the main building;
s3, reserving counter-pressure soil in the peripheral reverse construction area according to the deformation requirement of the foundation pit, and excavating the main building area to the substrate by adopting multi-level slope releasing;
s4, sequentially constructing the main building area structure, and when the beam slab structures of all layers of the sequentially constructed main building and the beam slab structures of all layers of the corresponding peripheral reverse construction form a whole, constructing upwards in the main building and simultaneously constructing downwards reversely to construct the underground structure of the peripheral reserved soil slope area of the main building.
The specific steps of step S1 are: the periphery of the basement is reversely constructed with underground continuous walls and supporting piles, and steel upright posts are inserted into the supporting piles to serve as vertical supporting members of the peripheral reverse construction area in the construction stage.
Step S2 specifically includes:
s21, constructing to form a B0 layer of peripheral beam slab in the peripheral reverse construction area;
s22, excavating earthwork in the range of the main building, then excavating earthwork in the peripheral reverse construction area in a hidden mode, excavating to the depth where the next layer of peripheral beam plate can be arranged, and constructing to form the next layer of peripheral beam plate;
and S23, repeating the step S22 until the Bx-th layer of peripheral beam plate is built.
Step S3 specifically includes:
s31, excavating earthwork in the range of the main building downwards, and reserving counter-pressure soil in the peripheral reverse construction area to form a supporting effect of gradually stepping slope from the periphery to the main building area;
and S32, when the earth in the range of the main building is excavated to the substrate, starting to construct engineering piles of the main building structure, and then sequentially constructing the Am-th layer main floor beam plate.
Step S4 specifically includes:
s41, the main building is upwards and sequentially constructed until the main building is built to be level with the Bx layer peripheral beam plate and connected with the Bx layer peripheral beam plate to form a whole;
and S42, continuing to sequentially operate the main floor, and respectively connecting the main floor with corresponding peripheral beam plates until forming a 0-layer main floor beam plate which is flush with the B0-layer peripheral beam plate, and meanwhile, reversely operating the peripheral beam plates until the peripheral beam plates are constructed to be horizontally connected with the Am-layer main floor beam plate.
In the peripheral reverse-construction area, under the condition of meeting the requirement of foundation pit deformation, a skip-layer excavation technology is adopted, wherein the skip-layer excavation technology is a construction technology for skipping the peripheral beam plate for the previous earthwork excavation and is used as a construction technology for one-time excavation together with the next earthwork excavation, and then a form that the Am-layer main beam plate is at least one layer lower than the Bx-layer peripheral beam plate is formed.
The invention has the advantages that:
(1) the whole foundation pit atmosphere main building forward construction area and the peripheral reverse construction area are integrally supported by the structural beam plates serving as horizontal supports, so that a large amount of temporary supporting engineering is saved, and meanwhile, the main building area is constructed in an open manner, so that the soil discharging speed is high, and the progress of the whole construction is greatly accelerated. The large space opening of the main building area in the reverse operation stage can obviously improve the ventilation and lighting conditions of underground operation.
(2) The underground structure of partial floors is firstly constructed reversely on the periphery of the main building, and the multi-stage slope-releasing soil-reserving of the passive area and the peripheral structure are utilized to restrain the displacement of the enclosure body in the construction process of the main building, so that the aims of controlling the deformation of the foundation pit and protecting the environment are fulfilled.
(3) The first-floor structure which is firstly reversely constructed around the main building is used as a construction site, so that the problems of narrow site and difficult operation are solved; on the other hand, the area of the foundation pit of the main building sequential construction area is relatively small, the main building area is not limited by the completion time of a large-area basement structure, the up-and-down synchronous construction can accelerate the construction progress of the main building, shorten the total construction period and reduce the early investment amount of the project.
Drawings
FIG. 1 is a flow chart of the present invention.
Fig. 2-10 are graphs illustrating the effects of the present invention according to the sequence of operations.
The notations in the figures have the following meanings:
1-underground continuous wall 2-steel upright post 3-peripheral beam plate 4-main floor beam plate
5-engineering pile 6-bearing pile
Detailed Description
As shown in fig. 1, a method for building construction with a step-shaped edge along and along the reverse direction comprises the following steps:
and S1, reverse construction of the vertical supporting member in the peripheral reverse construction area. As shown in fig. 2, the underground diaphragm wall 1 and the supporting pile 6 are constructed in the reverse direction around the basement, and the steel upright posts are inserted into the supporting pile 6 to be used as vertical supporting members of the peripheral reverse-construction area in the construction stage.
S2, constructing horizontal supporting members which are also used as structural beam plates in the peripheral reverse region by using a reverse method, and forming a closed-loop horizontal supporting system at the periphery of the main building, wherein the method specifically comprises the following steps:
s21, as shown in FIG. 3, B is formed in the peripheral reverse construction zone0A layer peripheral beam panel;
s22, as shown in fig. 4-5, excavating the earthwork in the range of the main building, then excavating the earthwork in the peripheral reverse construction area, excavating to the depth where the next layer of peripheral beam plate 3 can be arranged, and constructing to form the next layer of peripheral beam plate 3.
And S23, repeating the step S22 until the Bx-th layer of peripheral beam plates is established, wherein B1 layers of peripheral beam plates are formed in the step S4, and B2 layers of peripheral beam plates are formed in the step S5.
S3, reserving counter-pressure soil in the peripheral reverse construction area according to the foundation pit deformation requirement, and excavating the main building area to the substrate by adopting multi-level slope-releasing, wherein the method specifically comprises the following steps:
s31, as shown in figure 6, excavating earthwork in the range of the main building downwards, and reserving counter-pressure soil in the peripheral reverse construction area to form a supporting effect of grading slope from the periphery to the area of the main building;
s32, as shown in fig. 7, when the earth in the main floor is excavated to the base, the construction of the engineering pile 5 of the main floor structure is started, and then the Am-th layer main floor beam slab and the a4 layer main floor beam slab are constructed in sequence.
S4, as shown in fig. 8-10, constructing the main building sequentially, and when the beam slab structures of all layers of the main building sequentially constructed and the beam slab structures of all layers of the corresponding peripheral reverse constructed form an integral, constructing the main building upward and simultaneously constructing the underground structure of the peripheral reserved soil slope area of the main building downward and reversely, specifically comprising the following steps:
s41, as shown in FIG. 8, the main floor is upwards and sequentially operated until the main floor is built to be level with the B3 outer peripheral beam plate and connected with the B3 outer peripheral beam plate to form a whole;
s42, as shown in FIGS. 9-10, the main building continues to be sequentially operated and is respectively connected with the corresponding peripheral beam plates 3 until the connection with the B board is formed0Flush with layer-surrounding beam slab A0The main floor beam plate of the floor, meanwhile, the peripheral beam plate 3 is reversed until the peripheral beam plate 3 is built to be horizontally connected with the main floor beam plate of the A4 floor.
Specifically, in the peripheral reverse construction area, under the condition that the requirement of foundation pit deformation is met, the skip-layer excavation technology is adopted, namely, the skip-layer excavation technology is used for skipping the construction of the peripheral beam plate 3 for the previous earthwork excavation and is used as the construction technology for one-time excavation together with the next earthwork excavation, and then the form that the Am-layer main beam plate 4 is at least one layer lower than the Bx-layer peripheral beam plate is formed, so that the earthwork excavation efficiency can be further improved, and the effect of saving the construction period is achieved.
The invention is not to be considered as limited to the specific embodiments shown and described, but is to be understood to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. A stepped edge forward and backward building construction method is characterized by comprising the following steps:
s1, reversing the vertical supporting members of the peripheral reverse construction area;
s2, constructing horizontal supporting members which are also used as structural beam plates in the peripheral reverse region by using a reverse method, and forming a closed-loop horizontal supporting system at the periphery of the main building;
s3, reserving counter-pressure soil in the peripheral reverse construction area according to the deformation requirement of the foundation pit, and excavating the main building area to the substrate by adopting multi-level slope releasing;
s4, sequentially constructing the main building area structure, and when the beam slab structures of all layers of the sequentially constructed main building and the beam slab structures of all layers of the corresponding peripheral reverse construction form a whole, constructing upwards in the main building and simultaneously constructing downwards reversely to construct the underground structure of the peripheral reserved soil slope area of the main building.
2. The stepped edge clockwise and anticlockwise building construction method according to claim 1, wherein the concrete steps of step S1 are as follows: the periphery of the basement is reversely constructed with the underground continuous wall (1) and the supporting pile (6), and the steel upright posts are inserted into the supporting pile (6) and used as vertical supporting members of the peripheral reverse construction area in the construction stage.
3. The stepped edge clockwise and anticlockwise building construction method according to claim 2, wherein step S2 specifically comprises:
s21, constructing to form B in the peripheral reverse construction area0A layer peripheral beam plate (3);
s22, excavating earthwork in the range of the main building, then excavating earthwork of the peripheral reverse construction area in a hidden mode, excavating to the depth where the next layer of peripheral beam plate (3) can be arranged, and constructing to form the next layer of peripheral beam plate (3);
and S23, repeating the step S22 until the Bx-th layer peripheral beam plate (3) is established.
4. The stepped edge clockwise and anticlockwise building construction method according to claim 3, wherein the step S3 specifically comprises:
s31, excavating earthwork in the range of the main building downwards, and reserving counter-pressure soil in the peripheral reverse construction area to form a supporting effect of gradually stepping slope from the periphery to the main building area;
s32, when the earth in the range of the main floor is excavated to the basement, the construction of the engineering pile (5) of the main floor structure is started, and then the Am-th layer of the main floor beam plate (4) is constructed sequentially.
5. The stepped edge clockwise and anticlockwise building construction method according to claim 3, wherein the step S4 specifically comprises:
s41, the main floor is upwards and sequentially constructed until the main floor is built to be as high as the Bx layer peripheral beam plate (3) and is connected with the Bx layer peripheral beam plate (3) to form a whole;
s42, continuing to operate sequentially, and respectively connecting with corresponding peripheral beam plates (3) until forming and B0Flush A of layer peripheral beam plate (3)0The main floor beam plates (4) on the floor and the peripheral beam plates (3) are reversely worked until the peripheral beam plates (3) are built to be horizontally connected with the main floor beam plates (4) on the Am floor.
6. The method for building construction of stepwise forward and backward sides according to claim 1, wherein in the peripheral backward working area, under the condition of satisfying the requirement of foundation pit deformation, the skip-floor excavation technique is adopted, wherein the skip-floor excavation technique is used for construction of skipping the peripheral beam slab (3) for the previous earthwork excavation and is used as construction technique for one-time excavation together with the next earthwork excavation, and further, the Am-layer main floor beam slab (4) is formed to be at least one layer lower than the Bx-layer peripheral beam slab (3).
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| CN202010332230.3A CN111485578A (en) | 2020-04-24 | 2020-04-24 | Stepped edge forward and backward building construction method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113266038A (en) * | 2021-05-27 | 2021-08-17 | 中冶建工集团有限公司 | Construction method for excavating underground building in foundation pit |
| CN115094912A (en) * | 2022-08-01 | 2022-09-23 | 上海建工一建集团有限公司 | Trans-partition forward and backward combined construction method for building on upper part of ultra-large soft soil foundation pit |
| CN115354694A (en) * | 2022-09-22 | 2022-11-18 | 中建三局集团华南有限公司 | Super high-rise full-reverse construction method |
| CN115559351A (en) * | 2022-10-24 | 2023-01-03 | 中建三局集团华南有限公司 | Reverse construction method for all-steel-structure multi-layer basement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113266038A (en) * | 2021-05-27 | 2021-08-17 | 中冶建工集团有限公司 | Construction method for excavating underground building in foundation pit |
| CN115094912A (en) * | 2022-08-01 | 2022-09-23 | 上海建工一建集团有限公司 | Trans-partition forward and backward combined construction method for building on upper part of ultra-large soft soil foundation pit |
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| CN115354694A (en) * | 2022-09-22 | 2022-11-18 | 中建三局集团华南有限公司 | Super high-rise full-reverse construction method |
| CN115559351A (en) * | 2022-10-24 | 2023-01-03 | 中建三局集团华南有限公司 | Reverse construction method for all-steel-structure multi-layer basement |
| CN115559351B (en) * | 2022-10-24 | 2023-08-08 | 中建三局集团华南有限公司 | Reverse construction method for multi-layer basement of all-steel structure |
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Application publication date: 20200804 |