CN112031026A - Permanent-temporary combined open-cut and smooth-built structure for subway station and construction method - Google Patents
Permanent-temporary combined open-cut and smooth-built structure for subway station and construction method Download PDFInfo
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- CN112031026A CN112031026A CN202011056515.5A CN202011056515A CN112031026A CN 112031026 A CN112031026 A CN 112031026A CN 202011056515 A CN202011056515 A CN 202011056515A CN 112031026 A CN112031026 A CN 112031026A
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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
- E02D29/04—Making large underground spaces, e.g. for underground plants, e.g. stations of underground railways; Construction or layout thereof
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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
- 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
Abstract
The invention discloses a permanent-temporary combined open-cut smooth construction structure and a construction method for a subway station, which comprises an enclosure structure and a main structure; the main body structure comprises a prefabricated top plate, a prefabricated middle plate and an upright post, wherein the prefabricated top plate is positioned above the prefabricated middle plate, and the upright post is vertically arranged in the middle of the prefabricated top plate and the middle of the prefabricated middle plate; the envelope includes that first way supports, second way supports and shaped steel lattice column, and first way supports and prefabricated roof support connection forms and faces combination roof structure forever, and the second way supports and supports to connect with prefabricated medium plate support and forms and face combination medium plate structure forever, and stand and shaped steel lattice column support connection form and face combination stand structure forever. The structure does not need to dismantle or chisel out structural members such as the reinforced concrete inner supports, the temporary stand columns and the temporary connecting beams in the temporary structure, saves materials and labor, avoids noise pollution and energy loss, saves the construction period, improves the working efficiency, ensures the safety and stability of the foundation pit, and has reliable stress and non-reduced structural durability.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a permanent-temporary combined open-cut smooth construction structure and a construction method for a subway station.
Background
Since 2009, the urban rail transit industry enters an explosive rapid development stage, most subway stations are constructed by an open cut method, the structural form is an enclosure structure and a main structure, the enclosure structure is used as a temporary structure, structural components such as reinforced concrete inner supports, temporary stand columns, temporary connecting beams and the like are required to be removed or chiseled, a large amount of construction waste is formed every year, and meanwhile, the problems of serious noise pollution, energy loss and the like are caused.
Therefore, a set of novel subway station faces to combine open cut and is in the same direction as building structure forever, accomplishes that temporary structure and permanent structure combine together, reduces in a large number that temporary structure chisels out and abandonment, reduces noise pollution, energy-concerving and environment-protective, and the positive response national development green building call, the prospect is very wide, the meaning is very great.
Disclosure of Invention
The invention aims to: aiming at the problems that structural members in an enclosure structure in the prior art need to be removed or chiseled to form a large amount of construction waste and bring serious noise pollution and energy loss, the subway station forever combined open-cut forward building structure and the construction method are provided.
In order to achieve the purpose, the invention adopts the technical scheme that:
a permanent-temporary combined open-cut smooth-built structure of a subway station comprises an enclosure structure and a main structure;
the main body structure comprises a prefabricated top plate, a prefabricated middle plate and an upright post, wherein the prefabricated top plate is positioned above the prefabricated middle plate, and the upright post is vertically arranged in the middle of the prefabricated top plate and the middle of the prefabricated middle plate;
the enclosure structure comprises a first support, a second support and the section steel lattice column, the first support and the prefabricated roof support are connected to form a permanently-faced combined roof structure, the second support and the prefabricated middle plate support are connected to form a permanently-faced combined middle plate structure, and the column and the section steel lattice column support are connected to form a permanently-faced combined column structure.
The permanent temporary combination in the invention refers to: the envelope is a temporary structure, the main structure is a permanent structure, and the envelope and the main structure are connected together to form a permanent adjacent combined structure.
A subway station faces and combines the open cut to build the structure forever, through the above-mentioned structure, support the prefabricated roof the first way, and form and face and combine the roof structure forever with it together, support the prefabricated median plate the second way, and form and face and combine the median plate structure forever with it together, set up the column support of the shaped steel lattice column into an organic whole, and form and face and combine the column structure forever with it together, make the first way support, second way support and shaped steel lattice column not only can play the enclosure effect, can also be used for supporting the corresponding structure in the main body structure, the above-mentioned structure can exist as a part of the main body structure after finishing the enclosure effect, so does not need to demolish or chisel, thus has reduced chiseling and abandoning to the material, save material and manpower, have avoided noise pollution and energy loss, because it is a part to support the main body structure at the same time, have reduced the material and construction time used for supporting the supporting assembly of the main body structure in the original design, further save material and manual work, practiced thrift the time limit for a project, improved work efficiency to guaranteed foundation ditch safety and stability, the structure atress is reliable, structure durability does not reduce.
As the preferable scheme of the invention, the enclosure structure further comprises a top plate cast-in-place layer, and the top plate cast-in-place layer is connected above the first support. Through the structure, the cast-in-place layer of the top plate does not need to be detached after the enclosing process is finished, so that the material and labor are further saved, the construction period is shortened, and the working efficiency is improved.
As a preferable scheme of the invention, the enclosure structure further comprises a half-pile structure, the half-pile structure is vertically arranged, the half-pile structure support is connected with a crown beam, and the crown beam is connected with the end part of the first support close to the half-pile structure. Through the structure, the half-pile structure does not need to be dismantled after the enclosing process is finished, so that the material and labor are further saved, the construction period is shortened, and the working efficiency is improved.
According to the preferable scheme of the invention, the number of the first supports is two, the prefabricated top plate is arranged between the two first supports, and the two first supports are connected with the same crown beam.
As a preferable scheme of the present invention, the envelope further includes a middle plate finishing layer, and the middle plate finishing layer is connected above the second support.
As a preferable scheme of the invention, the semi-pile structure support is connected with a wale, the wale is positioned below the crown beam and arranged at an interval, and the wale is connected with the end part of the second support close to the semi-pile structure.
As a preferable aspect of the present invention, the number of the second supports is two, and the prefabricated middle plate is disposed between the two second supports.
As a preferable scheme of the invention, the enclosure structure further comprises an outer-wrapping structure, and the outer-wrapping structure is arranged outside the section steel lattice column.
As a preferable scheme of the invention, the main body structure further comprises a top longitudinal beam and a middle longitudinal beam, the top longitudinal beam and the first support are connected with the joint of the section steel lattice column to form a permanently adjacent combined top longitudinal beam structure, and the middle longitudinal beam and the second support are connected with the joint of the section steel lattice column to form a permanently adjacent combined middle longitudinal beam structure.
In the invention, the number of the permanent temporary combined middle plate structures is determined according to the number of the subway station layers.
A construction method of a permanent temporary combined open cut and smooth construction structure of a subway station is used for forming the permanent temporary combined open cut and smooth construction structure of the subway station, and comprises the following steps:
s1: constructing the enclosure structure of the station;
s2: constructing the section steel lattice column;
s3: excavating a foundation pit to the position below the permanent temporary combined top plate structure, constructing the permanent temporary combined top longitudinal beam structure, and then respectively constructing the crown beam and the first support to form a first permanent temporary combined support system;
s4: excavating a foundation pit to the position below a first permanent temporary combined middle plate structure positioned below the permanent temporary combined top plate structure, constructing the permanent temporary combined middle longitudinal beam structure, and then respectively constructing the waist beam and the second support to form a second permanent temporary combined support system;
s5: excavating a foundation pit to the position below a second permanent temporary combined middle plate structure positioned below the permanent temporary combined top plate structure, constructing the permanent temporary combined middle longitudinal beam structure, and then respectively constructing the waist beam and the second support to form a third permanent temporary combined support system;
s6: after the foundation pit is excavated to the base, a bottom plate is poured, then a negative three-layer side wall is sequentially built and connected with a second permanent temporary combined middle plate structure, and meanwhile, an outer wrapping structure wrapping the exterior of the section steel lattice column is constructed to form a permanent temporary combined upright column structure;
s7: constructing the rest part of a second permanent temporary combined middle plate structure, and connecting the prefabricated middle plate with a second support;
s8: after the second permanent temporary combined middle plate structure is completed, continuously and sequentially building a negative second-layer side wall, connecting the negative second-layer side wall with the first permanent temporary combined middle plate structure, and simultaneously constructing an outer wrapping structure wrapping the outer part of the section steel lattice column to form a permanent temporary combined upright column structure;
s9: constructing the rest part of the first permanent temporary combined middle plate structure, and connecting the prefabricated middle plate with the second support;
s10: after the first permanent temporary combined middle plate structure is completed, a negative layer of side wall is continuously built, the side wall is connected with the permanent temporary combined top plate structure, and meanwhile, an outer wrapping structure wrapping the outer part of the section steel lattice column is constructed to form the permanent temporary combined upright column structure;
s11: constructing the rest part of the permanent temporary combined roof structure, and connecting the prefabricated roof with the first support; then, connecting the top plate cast-in-place layer with the prefabricated top plate and the first support, and then casting in place to form the permanent temporary combined top plate structure;
s12: and finishing the middle plate decoration layer.
A subway station faces and combines the open cut to be in the same direction as the construction method of building the structure forever, through the above-mentioned method, can realize the above-mentioned subway station faces and combines the open cut to be in the same direction as the function of building the structure forever, the above-mentioned structure can exist as a part of the major structure after finishing the containment effect, so do not need demolish or chisel and remove, has improved work efficiency, construction convenience, easy operation.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. a subway station faces and combines the open cut to build the structure forever, through the above-mentioned structure, support the prefabricated roof the first way, and form and face and combine the roof structure forever with it together, support the prefabricated median plate the second way, and form and face and combine the median plate structure forever with it together, set up the column support of the shaped steel lattice column into an organic whole, and form and face and combine the column structure forever with it together, make the first way support, second way support and shaped steel lattice column not only can play the enclosure effect, can also be used for supporting the corresponding structure in the main body structure, the above-mentioned structure can exist as a part of the main body structure after finishing the enclosure effect, so does not need to demolish or chisel, thus has reduced chiseling and abandoning to the material, save material and manpower, have avoided noise pollution and energy loss, because it is a part to support the main body structure at the same time, have reduced the material and construction time used for supporting the supporting assembly of the main body structure in the original design, further save material and manual work, practiced thrift the time limit for a project, improved work efficiency to guaranteed foundation ditch safety and stability, the structure atress is reliable, structure durability does not reduce.
2. A subway station faces and combines the open cut to be in the same direction as the construction method of building the structure forever, through the above-mentioned method, can realize the above-mentioned subway station faces and combines the open cut to be in the same direction as the function of building the structure forever, the above-mentioned structure can exist as a part of the major structure after finishing the containment effect, so do not need demolish or chisel and remove, has improved work efficiency, construction convenience, easy operation.
Drawings
Fig. 1 is a schematic structural view of a permanent-temporary combined open-cut and smooth-built structure of a subway station.
Fig. 2 is a plan layout view of a subway station permanent-temporary combined open-cut smooth-construction structure.
Fig. 3 is a plan layout view of a first permanent temporary combined middle plate structure of the permanent temporary combined open cut and smooth construction structure of the subway station.
Fig. 4 is a plan layout view of a second permanent temporary combined middle plate structure of the permanent temporary combined open cut and smooth construction structure of the subway station.
Fig. 5 is a schematic structural diagram of a permanent temporary combined roof structure of a permanent temporary combined open cut and smooth construction structure of a subway station.
Fig. 6 is a schematic structural diagram of the connection of the half-pile structure and the permanent temporary combined roof structure of the permanent temporary combined open cut and smooth construction structure of the subway station.
Fig. 7 is a schematic structural diagram of a permanent temporary combined middle plate structure of a permanent temporary combined open cut and smooth construction structure of a subway station.
Fig. 8 is a schematic structural view of connection of a prefabricated middle plate and a waist rail of a permanent temporary combined open cut and smooth construction structure of a subway station.
Fig. 9 is a schematic structural diagram of a permanent temporary combined upright post structure of a permanent temporary combined open cut and smooth construction structure of a subway station.
Icon: 1-permanently adjacent combined top plate structure; 11-first track support; 12-prefabricating a top plate; 13-top plate cast-in-place layer; 14-a crown beam; 2-permanent temporary combined middle plate structure; 21-second support; 22-prefabricating a middle plate; 23-middle board decoration layer; 24-waist rail; 3-permanently adjacent combined upright column structure; 31-section steel lattice columns; 32-an outer-wrapped structure; 4-permanently adjacent combined top longitudinal beam structure; 5-permanently adjacent combined middle longitudinal beam structure; 6-half pile structure.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Examples
As shown in fig. 1 to 9, the present embodiment provides a subway station permanent-temporary combined open-cut down-side building structure, which includes an enclosure structure and a main structure.
The main structure comprises a prefabricated top plate 12, a prefabricated middle plate 22, upright posts, top longitudinal beams and middle longitudinal beams;
specifically, the prefabricated top plate 12 is located above the prefabricated middle plate 22, and the upright columns are vertically arranged in the middle of the prefabricated top plate 12 and the prefabricated middle plate 22.
The envelope structure comprises a first support 11, a second support 21, a section steel lattice column 31, a crown beam 14, a waist beam 24, a top plate cast-in-place layer 13, a middle plate decoration layer 23, an outer packing structure 32 and a half-pile structure 6;
specifically, the first support 11 is located above the second support 21, the top plate cast-in-place layer 13 is connected above the first support 11, the middle plate decoration layer 23 is located above the second support 21, and the outer wrapping structure 32 is located outside the section steel lattice column 31.
The number of the first supports 11 is two, the prefabricated top plate 12 is arranged between the two first supports 11, and the two first supports 11 are connected with the same crown beam 14; specifically, the prefabricated top plate 12 is paved between two first supports 11 and connected by bolts.
The number of the second supports 21 is two, the prefabricated middle plate 22 is arranged between the two second supports 21, and the two second supports 21 are connected with the same waist rail 24; specifically, the prefabricated middle plate 22 is paved between two second supports 21 and connected by bolts.
The half-pile structure 6 is vertically arranged, the half-pile structure 6 is connected with a crown beam 14, and the crown beam 14 is connected with the end part of the first support 11 close to the half-pile structure 6; specifically, the top beam 14 and the steel bars of the pile head of the half-pile structure 6 are anchored and cast-in-situ connected with each other, and the first support 11 and the steel bars of the top beam 14 are anchored and cast-in-situ connected with each other.
The semi-pile structure 6 is also connected with a wale 24, the crown beam 14 is positioned above the wale 24 and arranged at an interval, and the wale 24 is connected with the end part of the second support 21 close to the semi-pile structure 6; specifically, the wale 24 and the embedded steel bars of the half-pile structure 6 are anchored and connected with each other and then cast in situ, and the second support 21 and the wale 24 are anchored and cast in situ and connected with each other.
The embodiment also provides a construction method of the permanent-temporary combined open-cut and smooth-built structure of the subway station, which is used for forming the permanent-temporary combined open-cut and smooth-built structure of the subway station, and comprises the following steps:
s1: constructing a station enclosure structure;
specifically, a station enclosure structure is constructed, and a half-pile structure 6 or a half-wall structure is adopted at the top of the enclosure structure and is used for supporting and retaining a lateral soil body above a top plate of a main structure;
s2: constructing the section steel lattice column 31;
specifically, a temporary middle upright post of the station is constructed, a temporary upright post pile is firstly made, and then a section steel lattice column 31 is inserted into the pile foundation to form a permanent temporary combined upright post structure 3;
s3: excavating a foundation pit to the position below the permanent temporary combined top plate structure 1, constructing a permanent temporary combined top longitudinal beam structure 4, and then respectively constructing a crown beam 14 and a first support 11 to form a first permanent temporary combined support system;
specifically, the positions of part of the large holes are directly arranged into a plate support type;
s4: excavating a foundation pit to the position below a first permanent temporary combined middle plate structure 2 positioned below the permanent temporary combined top plate structure 1, constructing a permanent temporary combined middle longitudinal beam structure 5, and then respectively constructing a waist beam 24 and a second support 21 to form a second permanent temporary combined support system;
specifically, the positions of part of the large holes are directly arranged into a plate support type;
s5: excavating the foundation pit to the position below a second permanent temporary combined middle plate structure 2 positioned below the permanent temporary combined top plate structure 2, constructing a permanent temporary combined middle longitudinal beam structure 5, and then respectively constructing a waist beam 24 and a second support 21 to form a third permanent temporary combined support system;
specifically, the positions of part of the large holes are directly arranged into a plate support type;
s6: after the foundation pit is excavated to the base, a bottom plate is poured, then a negative three-layer side wall is sequentially built and connected with a second permanent temporary combined middle plate structure 2, and an outer wrapping structure 32 wrapping the exterior of the section steel lattice column 31 is constructed to form a permanent temporary combined upright column structure 3;
specifically, the second permanent temporary combined middle plate structure 2 is connected with a connector reserved in advance;
s7: constructing the rest part of a second permanent temporary combined middle plate structure 2, and connecting the prefabricated middle plate 2 with a second support 21;
specifically, a second permanent temporary combined middle plate structure 2 is constructed by adopting a prefabricated assembling technology, the prefabricated middle plate 2 is assembled in the blank of the second support 21, and the second permanent temporary combined middle plate structure is reliably connected by adopting bolts;
s8: after the second permanent temporary combined middle plate structure 2 is finished, continuously and sequentially building a negative second-layer side wall, connecting the negative second-layer side wall with the first permanent temporary combined middle plate structure 2, and simultaneously constructing an outer wrapping structure 32 wrapping the outer part of the section steel lattice column 31 to form a permanent temporary combined upright column structure 3;
specifically, the first permanent temporary combined middle plate structure 2 is connected with a connector reserved in advance;
s9: constructing the rest part of the first permanent temporary combined middle plate structure 2, and connecting the prefabricated middle plate 22 with the second support 21;
specifically, a first permanent temporary combined middle plate structure 2 is constructed by adopting a prefabrication and assembly technology, the prefabrication middle plate 2 is assembled in a blank of a second support 21, and the prefabricated middle plate structure is reliably connected by adopting bolts;
s10: after the first permanent temporary combined middle plate structure 2 is finished, a negative layer of side wall is continuously built, the side wall is connected with the permanent temporary combined top plate structure 1, and an outer wrapping structure 32 wrapping the outer part of the section steel lattice column 31 is constructed to form a permanent temporary combined upright column structure 3;
specifically, the permanent temporary combined top plate structure 1 is connected through a pre-reserved connector;
s11: constructing the rest part of the permanent temporary combined roof structure 1, connecting the prefabricated roof 12 with the first support 11, then connecting the roof cast-in-place layer 13 with the prefabricated roof 12 and the first support 11, and then casting in place to form the permanent temporary combined roof structure 1;
specifically, a prefabricated assembly technology is adopted to construct the permanent temporary combined roof structure 1, the prefabricated roof 12 is assembled at the blank of the first support 11 through a reserved tie bar extending out of the panel surface, and finally, a steel bar on the upper edge of the permanent temporary combined roof structure 1 is bound and connected with the reserved tie bar of the first support 11 and the prefabricated roof 12, and then a roof cast-in-place layer 13 is completed;
s12: finishing a middle plate decoration layer 23;
specifically, the middle plate finishing layer 23 is finished in the interior finishing and construction.
The subway station faces combination open cut forever and is in the same direction as building structure and construction method's that this embodiment provided beneficial effect lies in:
the first support 11 supports the prefabricated roof 12 and forms a permanent temporary combined roof structure 1 together with the prefabricated roof, the second support 21 supports the prefabricated middle plate 22 and forms a permanent temporary combined middle plate structure 2 together with the prefabricated middle plate structure, the section steel lattice column 31 support columns are arranged into a whole and form a permanent temporary combined column structure 3 together with the section steel lattice column, so that the first support 11, the second support 21 and the section steel lattice column 31 can play a role of enclosure and can also be used for supporting a corresponding structure in a main body structure, the structure can exist as a part of the main body structure after the enclosure function is finished, and does not need to be dismantled or removed, thereby reducing the removal and abandonment of materials, saving materials and labor, avoiding noise pollution and energy loss, and simultaneously reducing the material consumption and the construction time of a support component for supporting the main body structure in the original design because the structure is used as a part of the supporting main body structure, materials and labor are further saved, the construction period is saved, the working efficiency is improved, the safety and stability of the foundation pit are ensured, the structural stress is reliable, and the structural durability is not reduced;
the method can effectively realize the function of combining the permanent temporary open excavation and forward construction of the subway station, and the structure can exist as a part of a main structure after the enclosing effect is finished, so that the structure does not need to be dismantled or chiseled, the working efficiency is improved, the construction is convenient, and the operation is simple.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A permanent-temporary combined open-cut smooth-construction structure of a subway station is characterized by comprising an enclosure structure and a main structure;
the main body structure comprises a prefabricated top plate (12), a prefabricated middle plate (22) and an upright column, wherein the prefabricated top plate (12) is positioned above the prefabricated middle plate (22), and the upright column is vertically arranged in the middle of the prefabricated top plate (12) and the prefabricated middle plate (22);
the building enclosure structure comprises a first support (11), a second support (21) and a section steel lattice column (31), wherein the first support (11) and the prefabricated roof (12) are supported and connected to form a combined roof structure (1) which is permanently adjacent, the second support (21) and the prefabricated middle plate (22) are supported and connected to form a combined middle plate structure (2) which is permanently adjacent, and the column and the section steel lattice column (31) are supported and connected to form a combined column structure (3) which is permanently adjacent.
2. The subway station permanent-temporary combined open-cut forward building structure as claimed in claim 1, wherein said enclosure structure further comprises a top plate cast-in-place layer (13), said top plate cast-in-place layer (13) being connected above said first support (11).
3. The subway station faces combination open cut cis-trans building forever according to claim 2, characterized in that, envelope still includes half pile structure (6), half pile structure (6) vertical setting, half pile structure (6) support and are connected with crown beam (14), crown beam (14) with first support (11) be close to the tip of half pile structure (6) be connected.
4. The subway station permanent-temporary combined open-cut smooth-built structure as claimed in claim 3, wherein the number of said first supports (11) is two, said prefabricated top plate (12) is arranged between said two first supports (11), and said two first supports (11) are connected with the same said crown beam (14).
5. The subway station permanent-temporary combined open-cut smooth-construction structure as claimed in claim 4, wherein said enclosure structure further comprises a middle plate finishing layer (23), said middle plate finishing layer (23) being connected above said second support (21).
6. The subway station permanent-temporary combined open-cut smooth-construction structure as claimed in claim 5, wherein said semi-pile structure (6) supports and connects with a wale (24), said wale (24) is located under said crown beam (14), and both are arranged at an interval, said wale (24) and said second support (21) are connected near the end of said semi-pile structure (6).
7. The subway station permanent-temporary combined open-cut and smooth-built structure as claimed in claim 6, wherein the number of said second supports (21) is two, and said prefabricated middle plate (22) is disposed between two of said second supports (21).
8. The subway station permanent-temporary combined open-cut smooth building structure as claimed in claim 7, wherein said enclosure structure further comprises an outer-wrapped structure (32), said outer-wrapped structure (32) being disposed outside said steel lattice column (31).
9. The subway station permanent-temporary combined open-cut smooth-construction structure as claimed in claim 8, wherein said main structure further comprises a top longitudinal beam and a middle longitudinal beam, said top longitudinal beam and said first support (11) are connected with the joint of said section steel lattice column (31) to form a permanent-temporary combined top longitudinal beam structure (4), and said middle longitudinal beam and said second support (21) are connected with the joint of said section steel lattice column (31) to form a permanent-temporary combined middle longitudinal beam structure (5).
10. A construction method of a subway station permanent-temporary combined open-cut smooth-built structure, characterized by being used for forming the subway station permanent-temporary combined open-cut smooth-built structure as claimed in claim 9, the method comprising the steps of:
s1: constructing the enclosure structure of the station;
s2: constructing the section steel lattice column (31);
s3: excavating a foundation pit to the lower part of the permanent temporary combined top plate structure (1), constructing the permanent temporary combined top longitudinal beam structure (4), and then respectively constructing the crown beam (14) and the first support (11) to form a first permanent temporary combined support system;
s4: excavating a foundation pit to the position below a first permanent temporary combined middle plate structure (2) positioned below the permanent temporary combined top plate structure (1), constructing a permanent temporary combined middle longitudinal beam structure (5), and then respectively constructing a waist beam (24) and a second support (21) to form a second permanent temporary combined support system;
s5: excavating a foundation pit to the position below a second permanent temporary combined middle plate structure (2) positioned below the permanent temporary combined top plate structure (1), constructing a permanent temporary combined middle longitudinal beam structure (5), and then respectively constructing a waist beam (24) and a second support (21) to form a third permanent temporary combined support system;
s6: after the foundation pit is excavated to the base, a bottom plate is poured, then a negative three-layer side wall is sequentially built and connected with a second permanent temporary combined middle plate structure (2), and meanwhile, an outer covering structure (32) wrapping the outer part of the section steel lattice column (31) is constructed to form a permanent temporary combined upright column structure (3);
s7: constructing the rest part of a second permanent temporary combined middle plate structure (2), and connecting the prefabricated middle plate (22) with a second support (21);
s8: after the second permanent temporary combined middle plate structure (2) is finished, continuously building a negative two-layer side wall, connecting the negative two-layer side wall with the first permanent temporary combined middle plate structure (2), and constructing an outer wrapping structure (32) wrapping the outer part of the section steel lattice column (31) to form the permanent temporary combined upright column structure (3);
s9: constructing the rest part of the first permanent temporary combined middle plate structure (2) and connecting the prefabricated middle plate (22) with the second support (21);
s10: after the first permanent temporary combined middle plate structure (2) is finished, a negative side wall is continuously built sequentially and is connected with the permanent temporary combined top plate structure (1), and meanwhile, an outer wrapping structure (32) wrapping the outer part of the section steel lattice column (31) is constructed to form a permanent temporary combined upright column structure (3);
s11: constructing the rest part of the permanent temporary combined roof structure (1), and connecting the prefabricated roof (12) with the first support (11); then, connecting the top plate cast-in-place layer (13), the prefabricated top plate (12) and the first support (11) and then casting in place to form the permanent temporary combined top plate structure (1);
s12: and finishing the middle plate decoration layer (23).
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| CN202011056515.5A CN112031026A (en) | 2020-09-29 | 2020-09-29 | Permanent-temporary combined open-cut and smooth-built structure for subway station and construction method |
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| CN202011056515.5A CN112031026A (en) | 2020-09-29 | 2020-09-29 | Permanent-temporary combined open-cut and smooth-built structure for subway station and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115387378A (en) * | 2022-07-26 | 2022-11-25 | 广州地铁设计研究院股份有限公司 | Semi-pillarless assembly type station based on simply supported superposed side walls and floorslabs and method thereof |
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