CN216515630U - Construction system for dismantling, replacing and supporting ultra-deep basement in subareas - Google Patents
Construction system for dismantling, replacing and supporting ultra-deep basement in subareas Download PDFInfo
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- CN216515630U CN216515630U CN202123204069.0U CN202123204069U CN216515630U CN 216515630 U CN216515630 U CN 216515630U CN 202123204069 U CN202123204069 U CN 202123204069U CN 216515630 U CN216515630 U CN 216515630U
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Abstract
The utility model discloses a construction system for removing, replacing and supporting an ultra-deep basement in a partitioning manner, which comprises a plurality of secant piles, steel pipe upright piles and N supporting beams arranged from top to bottom, wherein a foundation pit is divided into a first foundation pit area and a second foundation pit area by part of the steel pipe upright piles, part of the steel pipe upright piles comprise the plurality of partitioning steel pipe upright piles, a temporary structure force transfer column is arranged on one side of each partitioning steel pipe upright pile, N +1 structural outer wall supporting short columns are arranged on each secant pile from bottom to top, N +1 layers of force transfer beams are arranged on each temporary structure force transfer column from bottom to top, a structural plate is connected between each outer wall and each force transfer beam, and N is a positive integer. According to the construction method, the steel pipe upright post piles are flexibly selected as the subarea steel pipe upright post piles in the foundation pit area according to the actual construction progress, a temporary structure force transmission post is constructed beside each subarea steel pipe upright post pile, the support beams are dismantled layer by layer and sectionally by utilizing the stress balance of the force transmission path, the structural plate is constructed, a part of basement main body structures are completed in advance, and the construction and the deployment are facilitated.
Description
Technical Field
The utility model belongs to the technical field of support removal and replacement of an ultra-deep basement in a subarea manner, and particularly relates to a support removal and replacement construction system for the ultra-deep basement in a subarea manner.
Background
The construction volume of urban underground rail transit construction is increased, urban land is short, the existing ultra-deep basement construction engineering is inevitably close to the urban underground rail, the construction of the ultra-deep basement can interfere with the adjacent existing building, the traditional support dismounting and replacement is completed by a whole layer of main structure, the inner support can be dismounted, for a foundation pit with large regional span, the whole layer of main structure of the basement must be waited, the construction period is delayed, or the foundation pit is partitioned by a temporary wall body with a fixed position, and the construction is not flexible enough; therefore, at present, an ultra-deep basement partition dismantling and replacing support construction system is lacked, and partition steel pipe column piles are flexibly selected in a foundation pit for partitioning the foundation pit, so that only a supporting beam stress path is required to be transmitted and completed, the construction can be continued to be performed upwards in sequence, the construction of a part of basement main body structures is completed in advance, and the construction and deployment are very facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects in the prior art are overcome, and provides a construction system for removing and replacing support in a partition mode for an ultra-deep basement, which is novel and reasonable in design, steel pipe upright posts are flexibly selected as partition steel pipe upright posts in a foundation pit area according to the actual construction progress, a temporary structure force transfer post is constructed beside each partition steel pipe upright post, a support beam is removed in a layered and segmented mode by utilizing the stress balance of a force transfer path, a structural plate is constructed, the foundation pit displacement is controlled within the early warning range, the influence on surrounding buildings and structures is minimal, a part of construction of a main structure of the basement is completed in advance, construction deployment is facilitated, and popularization and use are facilitated.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: the utility model provides an extra-deep basement subregion is torn open and is traded and prop construction system which characterized in that: the foundation pit is divided into a first foundation pit area and a second foundation pit area by a row of steel pipe upright piles positioned in the middle of the foundation pit in the plurality of steel pipe upright piles, the row of steel pipe upright piles comprises a plurality of partition steel pipe upright piles, a temporary structure transmission column is arranged on one side of each partition steel pipe upright pile, N +1 structural outer wall supporting short columns are arranged on the engaged piles opposite to one side, away from the partition steel pipe upright piles, of the temporary structure transmission column from bottom to top, N +1 structural outer wall supporting short columns are arranged on the engaged piles opposite to one side, in contact with the partition steel pipe upright piles, of the temporary structure transmission column, N +1 structural outer wall supporting short columns are arranged from bottom to top, and N +1 layers of transmission beams are arranged on the temporary structure transmission column from bottom to top, the force transfer beam is equal in height and in one-to-one correspondence with a first structural outer wall supporting short column on a corresponding secant pile and a second structural outer wall supporting short column on a corresponding secant pile, the exposed end of the first structural outer wall supporting short column is abutted against the outer side of the top of the first outer wall, one end of a first structural plate is connected with the inner side of the top of the first outer wall, the other end of the first structural plate is connected with the corresponding force transfer beam, the exposed end of the second structural outer wall supporting short column is abutted against the outer side of the top of the second outer wall, one end of the second structural plate is connected with the inner side of the top of the second outer wall, the other end of the second structural plate penetrates through a temporary structural force transfer column to be connected with the corresponding force transfer beam, and N is a positive integer;
the N support beams and the N +1 layers of force transfer beams are arranged in a vertically staggered manner;
backfill materials are filled between the first outer wall and the occlusive piles and between the second outer wall and the occlusive piles.
The construction system for dismantling, replacing and supporting the ultra-deep basement in the subareas is characterized in that: the method comprises the following steps that a plurality of secant piles located in a first foundation pit area in the secant piles are first secant piles, a plurality of secant piles located in a second foundation pit area in the secant piles are second secant piles, steel pipe upright piles located in the first foundation pit area in the plurality of steel pipe upright piles are first steel pipe upright piles, steel pipe upright piles located in the second foundation pit area in the plurality of steel pipe upright piles are second steel pipe upright piles, a first crown beam is arranged at the top of each first secant pile, and a second crown beam is arranged at the top of each second secant pile.
The construction system for dismantling, replacing and supporting the ultra-deep basement in the subareas is characterized in that: the method comprises the following steps of (3) taking N, wherein a first supporting beam is divided into a first supporting beam and a second supporting beam by a row of steel pipe upright piles positioned in the middle of the inside of a foundation pit, one end, far away from the first supporting beam, of the first supporting beam is connected with a first crown beam, and one end, far away from the first supporting beam, of the second supporting beam is connected with a second crown beam;
the second supporting beam is divided into a first supporting beam and a second supporting beam by a row of steel pipe upright piles positioned in the middle of the foundation pit, the third supporting beam is divided into a first supporting beam and a second supporting beam by a row of steel pipe upright piles positioned in the middle of the foundation pit, one end of the first supporting beam, far away from the second supporting beam, and one end of the third supporting beam, far away from the third supporting beam, are connected with the first secant pile through first waist beams, one end of the second supporting beam, far away from the first supporting beam, and one end of the third supporting beam, far away from the third supporting beam, are connected with the second secant pile through second waist beams.
The construction system for dismantling, replacing and supporting the ultra-deep basement in the subareas is characterized in that: the bottom of foundation ditch is provided with the basis top, the basis top is divided into first basis top and second basis top by the row of steel pipe stand pile that is located the interior middle part of foundation ditch.
The construction system for dismantling, replacing and supporting the ultra-deep basement in the subareas is characterized in that: the first snap-in pile opposite to one side, away from the partition steel pipe upright pile, of the temporary structure transmission column is provided with 4 first structure outer wall supporting short columns from bottom to top, the 4 first structure outer wall supporting short columns are respectively a third structure outer wall supporting short column, a second structure outer wall supporting short column, a first structure outer wall supporting short column and a first structure top plate outer wall supporting short column from bottom to top, and the first structure top plate outer wall supporting short column is connected with the first snap-in pile through a first crown beam;
a second snap-in pile opposite to one side, in contact with the partition steel pipe upright pile, of the temporary structure transmission column is provided with 4 second structure outer wall supporting short columns from bottom to top, the 4 second structure outer wall supporting short columns are respectively a third structure outer wall supporting short column second, a second structure outer wall supporting short column second, a first structure outer wall supporting short column second and a second structure top plate outer wall supporting short column from bottom to top, and the second structure top plate outer wall supporting short column is connected with the second snap-in pile through a second crown beam;
the temporary structure force transfer column is provided with 4 layers of force transfer beams from bottom to top, wherein the 4 layers of force transfer beams are respectively a third layer of force transfer beam, a second layer of force transfer beam, a first layer of force transfer beam and a structure top plate force transfer beam;
the exposed end of the first third structure outer wall supporting short column is abutted against the outer side of the top of the first third structure outer wall, one end of the first third structure plate is connected with the inner side of the top of the first third structure outer wall, and the other end of the first third structure plate is connected with the third layer of force transmission beam;
the exposed end of the first supporting short column of the second structure outer wall is abutted against the outer side of the top of the first second structure outer wall, one end of the first second structure plate is connected with the inner side of the top of the first second structure outer wall, and the other end of the first second structure plate is connected with the second layer of force transfer beam;
the exposed end of the first structure outer wall supporting short column is abutted against the outer side of the top of the first structure outer wall, one end of the first structure plate is connected with the inner side of the top of the first structure outer wall, and the other end of the first structure plate is connected with the first layer of force transfer beam;
the exposed end of the supporting short column of the first structure top plate outer wall is abutted against the outer side of the top of the first structure top plate outer wall, one end of the first structure top plate is connected with the inner side of the top of the first structure top plate outer wall, and the other end of the first structure top plate is connected with the force transmission beam of the structure top plate;
the exposed end of the second third structural outer wall supporting short column is abutted against the outer side of the top of the second third structural outer wall, one end of the second third structural plate is connected with the inner side of the top of the second third structural outer wall, and the other end of the first third structural plate penetrates through the temporary structural force transmission column to be connected with the third layer of force transmission beam;
the exposed end of the second structure outer wall supporting short column II is abutted against the outer side of the top of the second structure outer wall, one end of the second structure plate II is connected with the inner side of the top of the second structure outer wall, and the other end of the second structure plate II penetrates through the temporary structure force transfer column to be connected with the second layer of force transfer beam;
the exposed end of the second first structure outer wall supporting short column is abutted against the outer side of the top of the second first structure outer wall, one end of the second first structure plate is connected with the inner side of the top of the second first structure outer wall, and the other end of the second first structure plate penetrates through the temporary structure force transmission column to be connected with the first layer of force transmission beam;
the exposed end of the supporting short column of the outer wall of the second structure top plate is abutted to the outer side of the top of the outer wall of the second structure top plate, one end of the second structure top plate is connected with the inner side of the top of the outer wall of the second structure top plate, and the other end of the second structure top plate penetrates through the temporary structure force transmission column to be connected with the force transmission beam of the structure top plate.
The construction system for dismantling, replacing and supporting the ultra-deep basement in the subareas is characterized in that: the third layer of force transfer beam is positioned at the lower sides of the first third support beam and the second third support beam;
the second layer of force transfer beams are positioned at the lower sides of the first second support beam and the second support beam;
the first layer of force transfer beam is positioned at the lower sides of the first support beam I and the second support beam II;
the structural top plate force transmission beam is positioned on the upper sides of the first supporting beam and the second supporting beam.
The construction method has the advantages that the steel pipe upright post pile is flexibly selected as the partitioned steel pipe upright post pile in the foundation pit area according to the actual construction progress, a temporary structure force transmission column is constructed beside each partitioned steel pipe upright post pile, the supporting beams are dismantled in a layered and segmented mode by utilizing the stress balance of the force transmission path, the structural plate is constructed, the foundation pit displacement is guaranteed to be controlled within the early warning range, the influence on surrounding buildings and structures is minimum, a part of basement main body structure construction is completed in advance, construction deployment is facilitated, and popularization and use are facilitated.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view a-a of the foundation pit in the first foundation pit area after the construction of the foundation cap and the excavation of the foundation pit in the second foundation pit area in fig. 1.
Fig. 3 is a sectional view a-a of the foundation pit in the first foundation pit area and the second foundation pit area in fig. 1 at the construction completion stage of foundation pit earth excavation.
Fig. 4 is a sectional view a-a of the first construction of the second structural slab in the first foundation pit area and the second foundation pit area of fig. 1 at the stage of the foundation cap construction.
Fig. 5 is a sectional view a-a of the first construction site in the first foundation pit area and the third construction site in the second foundation pit area in fig. 1.
Fig. 6 is a sectional view a-a of the first structural ceiling and the second structural slab in the first and second foundation pit areas in fig. 1 at a second construction stage.
Fig. 7 is a sectional view a-a of the first foundation pit area of fig. 1 at a second construction stage of removing a steel pipe stud section under the first structural roof and constructing the first structural slab in the second foundation pit area.
Fig. 8 is a sectional view a-a of the construction stage of removing a first structural plate, a lower steel pipe stud segment and constructing a second structural roof in the second foundation pit area in the first foundation pit area in fig. 1.
Fig. 9 is a sectional view a-a of the construction stage of removing a lower steel pipe stud pile section of the second structural plate in the first foundation pit area and removing a lower steel pipe stud pile section of the second structural top plate in the second foundation pit area in fig. 1.
Fig. 10 is a sectional view a-a of the construction stage of removing the lower steel pipe stud section of the third structural plate in the first foundation pit area and removing the lower steel pipe stud section of the first structural top plate in the second foundation pit area in fig. 1.
Fig. 11 is a sectional view a-a of the basement main structure in the first foundation pit area in fig. 1 at the construction stage when the construction of the steel pipe upright post segment under the second structure top plate is completed and removed in the second foundation pit area.
Fig. 12 is a sectional view a-a of the completed construction of the main structure of the basement in the foundation pit area of fig. 1.
Description of reference numerals:
1-a first occlusive pile; 2-a first occlusive pile; 3, a first steel pipe upright pile;
4, a second steel pipe upright pile; 5-a first crown beam; 6-second crown beam;
7, a first supporting beam I; 8, a second support beam; 9-a first wale;
10-second wale; 11-a first second supporting beam; 12-a second support beam II;
13-a third supporting beam I; 14-a second support beam; 15-foundation top;
16-foundation pit earthwork; 17-zoning steel pipe upright post piles; 18-temporary structural force transfer columns;
19-1-a first supporting short column of the third structure outer wall; 19-2-a first supporting short column of the second structure outer wall;
19-3-first structural exterior wall supporting short column I; 19-4-first structure roof outer wall support studs;
20-1 — a third structure exterior wall one; 20-2-a first external wall of a second structure;
20-3 — first structural exterior wall one; 20-4 — a first structural roof outer wall;
21-1-third layer of force transfer beam; 21-2-second layer of transfer beam;
21-3-first layer of transfer beam; 21-4-structural roof force transfer beam;
22-1-third structural panel one; 22-2 — a second structural panel one;
22-3 — first structural panel one; 22-4 — a first structural ceiling;
23-backfill; 24-1-a second supporting short column of the third structure outer wall;
24-2-a second structural outer wall supporting short column II; 24-3-a second supporting short column of the first structure outer wall;
24-4-a second structure roof outer wall support stud; 25-1-a second exterior wall of a third structure;
25-2-a second structural exterior wall II; 25-3-a first external wall of a second structure;
25-4-a second structure roof exterior wall; 26-1-third structural panel two;
26-2 — a second structural panel two; 26-3 — a second structural panel; 26-4 — second structural ceiling.
Detailed Description
As shown in fig. 1 to 12, the utility model includes a plurality of secant piles arranged around the outer edge of a foundation pit area and a plurality of steel pipe upright piles arranged in the foundation pit area, the plurality of steel pipe upright piles and the plurality of secant piles are connected through N support beams arranged from top to bottom, a row of steel pipe upright piles positioned in the middle of the foundation pit among the plurality of steel pipe upright piles divides the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe upright piles includes a plurality of partition steel pipe upright piles 17, one side of the partition steel pipe upright piles 17 is provided with a temporary structure transmission column 18, one side of the temporary structure transmission column 18 far away from the partition steel pipe upright piles 17 is provided with N +1 structural outer wall supporting short columns one from bottom to top on the secant pile opposite to the side, the temporary structure transmission column 18 is provided with N +1 structural outer wall supporting short columns two from bottom to top on the secant pile opposite to the side contacting with the partition steel pipe upright piles 17, the temporary structure force transfer column 18 is provided with N +1 layers of force transfer beams from bottom to top, the force transfer beams are in equal height and one-to-one correspondence with the first structural outer wall supporting short columns on the corresponding secant piles and the second structural outer wall supporting short columns on the corresponding secant piles, the exposed ends of the first structural outer wall supporting short columns are abutted against the outer side of the top of the first outer wall, one ends of the first structural plates are connected with the inner side of the top of the first outer wall, the other ends of the first structural plates are connected with the corresponding force transfer beams, the exposed ends of the second structural outer wall supporting short columns are abutted against the outer side of the top of the second outer wall, one ends of the second structural plates are connected with the inner side of the top of the second outer wall, and the other ends of the second structural plates penetrate through the temporary structure force transfer column 18 to be connected with the corresponding force transfer beams, wherein N is a positive integer;
the N support beams and the N +1 layers of force transfer beams are arranged in a vertically staggered manner;
backfill 23 is filled between the first outer wall and the occlusive piles and between the second outer wall and the occlusive piles.
In this embodiment, among the plurality of occlusive piles, the occlusive pile located in the first foundation pit area is a first occlusive pile 1, among the plurality of occlusive piles, the occlusive pile located in the second foundation pit area is a second occlusive pile 2, among the plurality of steel pipe stud piles, the steel pipe stud pile located in the first foundation pit area is a first steel pipe stud pile 3, among the plurality of steel pipe stud piles, the steel pipe stud pile located in the second foundation pit area is a second steel pipe stud pile 4, a first crown beam 5 is arranged at the top of the first occlusive pile 1, and a second crown beam 6 is arranged at the top of the second occlusive pile 2.
In the embodiment, the N is 3, wherein the first supporting beam is divided into a first supporting beam I7 and a first supporting beam II 8 by a row of steel pipe upright piles positioned in the middle of the foundation pit, one end, far away from the first supporting beam II 8, of the first supporting beam I7 is connected with the first crown beam 5, and one end, far away from the first supporting beam I7, of the first supporting beam II 8 is connected with the second crown beam 6;
the second supporting beam is divided into a first supporting beam 11 and a second supporting beam 12 by a row of steel pipe upright piles in the middle of the foundation pit, the third supporting beam is divided into a first supporting beam 13 and a second supporting beam 14 by a row of steel pipe upright piles in the middle of the foundation pit, one end of the first supporting beam 11, far away from the second supporting beam 12, and one end of the first supporting beam 13, far away from the third supporting beam 14, are connected with the first occlusive pile 1 through a first wale 9, one end of the second supporting beam 12, far away from the first supporting beam 11, and one end of the third supporting beam 14, far away from the third supporting beam 13, are connected with the second occlusive pile 2 through a second wale 10.
In this embodiment, the bottom of foundation ditch is provided with the basis top, the basis top is divided into first basis top 15 and second basis top by the row of steel pipe upright post stake that is located the interior middle part of foundation ditch.
In the embodiment, 4 first structural outer wall supporting short columns are arranged on the first occlusive pile 1 opposite to one side, away from the partition steel pipe upright pile 17, of the temporary structural transmission column 18 from bottom to top, the 4 first structural outer wall supporting short columns are respectively a third structural outer wall supporting short column 19-1, a second structural outer wall supporting short column 19-2, a first structural outer wall supporting short column 19-3 and a first structural top plate outer wall supporting short column 19-4 from bottom to top, and the first structural top plate outer wall supporting short column 19-4 is connected with the first occlusive pile 1 through a first crown beam 5;
a second snap pile 2 opposite to one side, in contact with the partition steel pipe upright pile 17, of the temporary structure transmission column 18 is provided with 4 second structure outer wall supporting short columns from bottom to top, the 4 second structure outer wall supporting short columns are respectively a third structure outer wall supporting short column second 24-1, a second structure outer wall supporting short column second 24-2, a first structure outer wall supporting short column second 24-3 and a second structure top plate outer wall supporting short column 24-4 from bottom to top, and the second structure top plate outer wall supporting short column 24-4 is connected with the second snap pile 2 through a second crown beam 6;
the temporary structure force transfer column 18 is provided with 4 layers of force transfer beams from bottom to top, wherein the 4 layers of force transfer beams are respectively a third layer of force transfer beam 21-1, a second layer of force transfer beam 21-2, a first layer of force transfer beam 21-3 and a structure top plate force transfer beam 21-4;
the exposed end of the first supporting short column 19-1 of the third structure outer wall is abutted against the outer side of the top of the first 20-1 of the third structure outer wall, one end of a first 22-1 of the third structure plate is connected with the inner side of the top of the first 20-1 of the third structure outer wall, and the other end of the first 22-1 of the third structure plate is connected with a third layer of force transmission beam 21-1;
the exposed end of the first support short column 19-2 of the second structure outer wall is abutted against the outer side of the top of the first 20-2 of the second structure outer wall, one end of a first 22-2 of the second structure plate is connected with the inner side of the top of the first 20-2 of the second structure outer wall, and the other end of the first 22-2 of the second structure plate is connected with a second layer of force transfer beam 21-2;
the exposed end of the first structure outer wall supporting short column I19-3 abuts against the outer side of the top of the first structure outer wall I20-3, one end of a first structure plate I22-3 is connected with the inner side of the top of the first structure outer wall I20-3, and the other end of the first structure plate I22-3 is connected with a first layer of force transfer beam 21-3;
the exposed end of the supporting short column 19-4 of the outer wall of the first structure top plate is abutted against the outer side of the top of the outer wall 20-4 of the first structure top plate, one end of the first structure top plate 22-4 is connected with the inner side of the top of the outer wall 20-4 of the first structure top plate, and the other end of the first structure top plate 22-4 is connected with the force transmission beam 21-4 of the structure top plate;
the exposed end of the second third structure outer wall supporting short column 24-1 is abutted against the outer side of the top of the second third structure outer wall 25-1, one end of the second third structure plate 26-1 is connected with the inner side of the top of the second third structure outer wall 25-1, and the other end of the first third structure plate 22-1 penetrates through the temporary structure force transfer column 18 to be connected with the third layer of force transfer beam 21-1;
the exposed end of the second structure outer wall support short column II 24-2 is abutted against the outer side of the top of the second structure outer wall II 25-2, one end of a second structure plate II 26-2 is connected with the inner side of the top of the second structure outer wall II 25-2, and the other end of the second structure plate II 22-2 penetrates through the temporary structure force transfer column 18 to be connected with the second layer of force transfer beam 21-2;
the exposed end of the second support short column 24-3 of the first structure outer wall is abutted against the outer side of the top of the second 25-3 of the first structure outer wall, one end of the second 26-3 of the first structure plate is connected with the inner side of the top of the second 25-3 of the first structure outer wall, and the other end of the second 22-3 of the first structure plate penetrates through the temporary structure force transfer column 18 to be connected with the first layer of force transfer beam 21-3;
the exposed end of the supporting short column 24-4 of the second structure top plate outer wall is abutted against the outer side of the top of the second structure top plate outer wall 25-4, one end of the second structure top plate 26-4 is connected with the inner side of the top of the second structure top plate outer wall 25-4, and the other end of the second structure top plate 22-4 penetrates through the temporary structure force transfer column 18 to be connected with the structure top plate force transfer beam 21-4.
In this embodiment, the third layer of the transfer beam 21-1 is located at the lower side of the third first support beam 13 and the third second support beam 14;
the second layer of the transfer beams 21-2 is positioned at the lower sides of the first support beam 11 and the second support beam 12;
the first layer of the force transfer beams 21-3 are positioned at the lower sides of the first support beam I7 and the first support beam II 8;
the structural roof transfer beam 21-4 is located on the upper side of the first support beam 7 and the second support beam 8.
When the utility model is implemented, the method comprises the following steps:
step one, constructing an occlusive pile and a steel pipe upright pile on the ground: driving a plurality of secant piles around the outer edge of the foundation pit area, driving a plurality of steel pipe upright piles in the foundation pit area, and reserving empty pile positions at the tops of the secant piles and the steel pipe upright piles;
step two, constructing the crown beam and the first support beam: constructing a crown beam at the empty pile position at the top of the secant pile, and connecting a plurality of steel pipe upright piles with a plurality of secant piles by using a first supporting beam;
step three, foundation pit partitioning: the row of steel pipe upright piles positioned in the middle of the inside of the foundation pit in the plurality of steel pipe upright piles divides the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe upright piles comprises a plurality of subarea steel pipe upright piles 17, and the construction of the first foundation pit area is faster than that of the second foundation pit area;
carrying out foundation pit earthwork 16 excavation, support of parts of a second support beam and a third support beam in the first foundation pit area and construction of a first foundation top 15 in a layered mode in the first foundation pit area;
carrying out foundation pit earthwork 16 excavation in a second foundation pit area in a layered mode, and supporting parts of a second supporting beam and a third supporting beam in the second foundation pit area;
the first support beam is divided into a first support beam I7 and a first support beam II 8 by a row of steel pipe upright piles positioned in the middle of the inside of the foundation pit;
the second support beam is divided into a first support beam 11 and a second support beam 12 by a row of steel pipe upright piles positioned in the middle of the foundation pit;
the third support beam is divided into a first support beam 13 and a second support beam 14 by a row of steel pipe upright piles positioned in the middle of the foundation pit;
step four, constructing the force transfer column of the temporary structure and dismantling a first third supporting beam, wherein the process is as follows:
step 401, arranging a temporary structure force transfer column 18 on one side of the partition steel pipe upright column 17, wherein the height of the temporary structure force transfer column 18 is higher than that of the second support beam 14;
step 402, arranging a third layer of force transfer beam 21-1 on the temporary structure force transfer column 18 towards one side of the first foundation pit area, wherein the height of the third layer of force transfer beam 21-1 is lower than that of a third support beam 13, arranging a third structure outer wall support short column I19-1 on the first snap-in pile 1 opposite to one side, far away from the partition steel pipe upright column pile 17, of the temporary structure force transfer column 18, and enabling the third structure outer wall support short column I19-1 to be as high as the third layer of force transfer beam 21-1;
step 403, the exposed end of the first supporting short column 19-1 of the third structural outer wall abuts against the outer side of the top of the first 20-1 of the third structural outer wall, one end of a first 22-1 of the third structural plate is connected with the inner side of the top of the first 20-1 of the third structural outer wall, and the other end of the first 22-1 of the third structural plate is connected with a third layer of force transmission beam 21-1;
step 404, removing the third support beam I13;
step 405, completing excavation of foundation pit earthwork 16 in the second foundation pit area;
step five, dismantling the first second supporting beam, wherein the process is as follows:
step 501, the height of the temporary structure force transmission column 18 is increased, and the height of the temporary structure force transmission column 18 is higher than that of the second support beam 12;
step 502, arranging a second layer of force transfer beam 21-2 on the temporary structure force transfer column 18 towards one side of the first foundation pit area, wherein the height of the second layer of force transfer beam 21-2 is lower than that of a second support beam 12, arranging a first second structure outer wall support short column 19-2 on the first snap pile 1 opposite to one side, far away from the partition steel pipe upright column pile 17, of the temporary structure force transfer column 18, and the first second structure outer wall support short column 19-2 is as high as the second layer of force transfer beam 21-2;
step 503, the exposed end of the first supporting short column 19-2 of the first structural outer wall is abutted against the outer side of the top of the first 20-2 of the second structural outer wall, one end of a first 22-2 of the second structural plate is connected with the inner side of the top of the first 20-2 of the second structural outer wall, and the other end of the first 22-2 of the second structural plate is connected with a second layer of force transmission beam 21-2;
step 504, removing the first support beam 11;
step 505, completing construction of a second foundation top in the second foundation pit area;
step six, dismantling the first support beam and the second support beam, wherein the process is as follows:
step 601, the height of the temporary structure force transmission column 18 is increased, and the height of the temporary structure force transmission column 18 is higher than that of the first support beam II 8;
step 602, arranging a first layer of force transfer beams 21-3 on the temporary structure force transfer column 18 towards one side of a first foundation pit area, wherein the height of the first layer of force transfer beams 21-3 is lower than that of a first support beam II 8, arranging a first structure outer wall support short column I19-3 on a first snap-in pile 1 opposite to one side, far away from a partition steel pipe upright column pile 17, of the temporary structure force transfer column 18, and enabling the first structure outer wall support short column I19-3 to be as high as the first layer of force transfer beams 21-3;
603, the exposed end of the first structure outer wall supporting short column 19-3 is abutted against the outer side of the top of the first structure outer wall 20-3, one end of a first structure plate 22-3 is connected with the inner side of the top of the first structure outer wall 20-3, and the other end of the first structure plate 22-3 is connected with the first layer of force transmission beam 21-3;
step 604, removing the first support beam I7;
605, arranging a second third structure outer wall supporting short column 24-1 with the same height as that of a third layer of force transfer beam 21-1 on the second occlusive pile 2 opposite to the side, in contact with the partition steel pipe upright pile 17, of the temporary structure force transfer column 18;
606, the exposed end of the second supporting short column 24-1 of the third structural outer wall is abutted against the outer side of the top of the second 25-1 of the third structural outer wall, one end of a second 26-1 of the third structural plate is connected with the inner side of the top of the second 25-1 of the third structural outer wall, and the other end of a first 22-1 of the third structural plate penetrates through the temporary structural force transfer column 18 to be connected with a third layer of force transfer beam 21-1;
step 607, removing the second support beam 14;
step seven, constructing a first structure top plate and dismantling a second support beam II, wherein the process is as follows:
701, arranging a structural roof force transfer beam 21-4 on the temporary structural force transfer column 18 towards the top of one side of the first foundation pit area, and arranging a first structural roof outer wall supporting short column 19-4 on the top of the first occlusive pile 1;
702, abutting the exposed end of the supporting short column 19-4 of the outer wall of the first structure top plate against the outer side of the top of the outer wall 20-4 of the first structure top plate, connecting one end of the first structure top plate 22-4 with the inner side of the top of the outer wall 20-4 of the first structure top plate, and connecting the other end of the first structure top plate 22-4 with the force transmission beam 21-4 of the structure top plate;
703, arranging a second structure outer wall supporting short column second 24-2 with the same height as the second layer of force transfer beam 21-2 on the second occlusive pile 2 opposite to the side, in contact with the partition steel pipe upright pile 17, of the temporary structure force transfer column 18;
step 704, the exposed end of the second structure outer wall supporting short column II 24-2 is abutted against the outer side of the top of the second structure outer wall II 25-2, one end of a second structure plate II 26-2 is connected with the inner side of the top of the second structure outer wall II 25-2, and the other end of the second structure plate II 22-2 penetrates through the temporary structure force transfer column 18 to be connected with a second layer of force transfer beam 21-2;
step 705, removing the second support beam II 12;
step eight, removing the steel pipe upright piles in the first foundation pit area layer by layer, and filling backfill materials 23 between the first occlusive pile 1 and the first outer wall;
step nine, dismantling a second support beam, wherein the process is as follows:
step 901, arranging a second support short column 24-3 of the first structure outer wall, which is as high as the first layer of transmission beam 21-3, on the second occlusive pile 2 opposite to the side, which is in contact with the partition steel pipe upright pile 17, of the temporary structure transmission column 18;
step 902, the exposed end of the second support short column 24-3 of the first structure outer wall abuts against the outer side of the top of the second 25-3 of the first structure outer wall, one end of the second 26-3 of the first structure plate is connected with the inner side of the top of the second 25-3 of the first structure outer wall, and the other end of the second 22-3 of the first structure plate penetrates through the temporary structure force transfer column 18 to be connected with the first layer of force transfer beam 21-3;
step 903, dismantling the second support beam 8 of the first pass;
step ten, constructing a second structure top plate: a second structure top plate outer wall supporting short column 24-4 is arranged at the top of the second snap pile 2, the exposed end of the second structure top plate outer wall supporting short column 24-4 is abutted against the outer side of the top of the second structure top plate outer wall 25-4, one end of a second structure top plate 26-4 is connected with the inner side of the top of the second structure top plate outer wall 25-4, and the other end of the second structure top plate 22-4 penetrates through the temporary structure force transfer column 18 to be connected with a structure top plate force transfer beam 21-4;
eleven, removing the steel pipe upright piles in the second foundation pit area layer by layer, and filling backfill 23 between the second occlusive pile 2 and the outer wall II.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. The utility model provides an extra-deep basement subregion is torn open and is traded and prop construction system which characterized in that: the foundation pit structure comprises a plurality of secant piles arranged around the outer edge of a foundation pit area in a driving mode and a plurality of steel pipe upright piles arranged in the foundation pit area in a driving mode, wherein the plurality of steel pipe upright piles and the plurality of secant piles are connected through N supporting beams arranged from top to bottom, a row of steel pipe upright piles positioned in the middle of the interior of the foundation pit among the plurality of steel pipe upright piles divides the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe upright piles comprises a plurality of partition steel pipe upright piles (17), a temporary structure transmission column (18) is arranged on one side of each partition steel pipe upright pile (17), N +1 structural outer wall supports I are arranged on the secant pile opposite to one side, away from the partition steel pipe upright pile (17), of each temporary structure transmission column (18), N +1 structural outer wall supports II are arranged on the secant pile opposite to one side, contacting with the partition steel pipe upright pile (17), of each temporary structure transmission column (18), from bottom to top, the temporary structure force transfer column (18) is provided with N +1 layers of force transfer beams from bottom to top, the force transfer beams are in equal height and one-to-one correspondence with a first structure outer wall supporting short column on a corresponding secant pile and a second structure outer wall supporting short column on a corresponding secant pile, the exposed end of the first structure outer wall supporting short column is abutted against the outer side of the top of the first outer wall, one end of the first structure plate is connected with the inner side of the top of the first outer wall, the other end of the first structure plate is connected with the corresponding force transfer beam, the exposed end of the second structure outer wall supporting short column is abutted against the outer side of the top of the second outer wall, one end of the second structure plate is connected with the inner side of the top of the second outer wall, the other end of the second structure plate penetrates through the temporary structure force transfer column (18) to be connected with the corresponding force transfer beam, wherein N is a positive integer;
the N support beams and the N +1 layers of force transfer beams are arranged in a vertically staggered manner;
backfill (23) is filled between the first outer wall and the secant pile and between the second outer wall and the secant pile.
2. The construction system for partition dismantling, replacing and supporting of the ultra-deep basement according to claim 1, characterized in that: the method comprises the following steps that a secant pile located in a first foundation pit area in the secant piles is a first secant pile (1), a secant pile located in a second foundation pit area in the secant piles is a second secant pile (2), a steel pipe upright pile located in the first foundation pit area in the steel pipe upright piles is a first steel pipe upright pile (3), a steel pipe upright pile located in the second foundation pit area in the steel pipe upright piles is a second steel pipe upright pile (4), a first crown beam (5) is arranged at the top of the first secant pile (1), and a second crown beam (6) is arranged at the top of the second secant pile (2).
3. The construction system for partition dismantling, replacing and supporting of the ultra-deep basement according to claim 2, characterized in that: the method comprises the following steps that 3 is obtained, wherein a first supporting beam is divided into a first supporting beam I (7) and a second supporting beam II (8) by a row of steel pipe upright piles positioned in the middle of the inside of a foundation pit, one end, far away from the first supporting beam II (8), of the first supporting beam I (7) is connected with a first crown beam (5), and one end, far away from the first supporting beam I (7), of the first supporting beam II (8) is connected with a second crown beam (6);
the second supporting beam is divided into a first supporting beam (11) and a second supporting beam (12) by a row of steel pipe column piles in the middle of the inner portion of the foundation pit, the third supporting beam is divided into a first supporting beam (13) and a second supporting beam (14) by a row of steel pipe column piles in the middle of the inner portion of the foundation pit, one end of the first supporting beam (11) far away from the second supporting beam (12) and one end of the first supporting beam (13) far away from the third supporting beam (14) are connected with the first occlusive pile (1) through the first waist beam (9), one end of the second supporting beam (12) far away from the first supporting beam (11) and one end of the third supporting beam (14) far away from the first supporting beam (13) are connected with the second occlusive pile (2) through the second waist beam (10).
4. The construction system for partition dismantling, replacing and supporting of the ultra-deep basement according to claim 2, characterized in that: the bottom of foundation ditch is provided with the basis top, the basis top is divided into first basis top (15) and second basis top by the row of steel pipe column pile that is located the interior middle part of foundation ditch.
5. The construction system for partition dismantling, replacing and supporting of the ultra-deep basement according to claim 3, characterized in that: the temporary structure force transmission column (18) is provided with a first structural outer wall supporting short column from bottom to top on the first occlusive pile (1) opposite to one side far away from the partition steel pipe upright column (17), the first 4 structural outer wall supporting short columns are respectively a first third structural outer wall supporting short column (19-1), a first second structural outer wall supporting short column (19-2), a first structural outer wall supporting short column (19-3) and a first structure top plate outer wall supporting short column (19-4) from bottom to top, and the first structure top plate outer wall supporting short column (19-4) is connected with the first occlusive pile (1) through a first crown beam (5);
a second structural outer wall supporting short column (4) is arranged on the second occlusive pile (2) opposite to the side, in contact with the partition steel pipe upright column pile (17), of the temporary structural transmission column (18) from bottom to top, the second structural outer wall supporting short column (4) is respectively a third structural outer wall supporting short column (24-1), a second structural outer wall supporting short column (24-2), a first structural outer wall supporting short column (24-3) and a second structural top plate outer wall supporting short column (24-4) from bottom to top, and the second structural top plate outer wall supporting short column (24-4) is connected with the second occlusive pile (2) through a second crown beam (6);
the temporary structure force transfer column (18) is provided with 4 layers of force transfer beams from bottom to top, wherein the 4 layers of force transfer beams are respectively a third layer of force transfer beam (21-1), a second layer of force transfer beam (21-2), a first layer of force transfer beam (21-3) and a structure top plate force transfer beam (21-4);
the exposed end of the first supporting short column (19-1) of the third structure outer wall is abutted against the outer side of the top of the first third structure outer wall (20-1), one end of the first third structure plate (22-1) is connected with the inner side of the top of the first third structure outer wall (20-1), and the other end of the first third structure plate (22-1) is connected with the third layer of force transmission beam (21-1);
the exposed end of the first supporting short column (19-2) of the second structure outer wall is abutted against the outer side of the top of the first structure outer wall (20-2), one end of the first second structure plate (22-2) is connected with the inner side of the top of the first second structure outer wall (20-2), and the other end of the first second structure plate (22-2) is connected with the second layer of force transmission beam (21-2);
the exposed end of the first structure outer wall supporting short column (19-3) is abutted against the outer side of the top of the first structure outer wall (20-3), one end of a first structure plate (22-3) is connected with the inner side of the top of the first structure outer wall (20-3), and the other end of the first structure plate (22-3) is connected with a first layer of force transmission beam (21-3);
the exposed end of the supporting short column (19-4) of the first structure top plate outer wall is abutted against the outer side of the top of the first structure top plate outer wall (20-4), one end of the first structure top plate (22-4) is connected with the inner side of the top of the first structure top plate outer wall (20-4), and the other end of the first structure top plate (22-4) is connected with the force transmission beam (21-4) of the structure top plate;
the exposed end of the second third-structure outer wall supporting short column (24-1) is abutted against the outer side of the top of the second third-structure outer wall (25-1), one end of the second third-structure plate (26-1) is connected with the inner side of the top of the second third-structure outer wall (25-1), and the other end of the first third-structure plate (22-1) penetrates through the temporary structure force transfer column (18) to be connected with the third layer of force transfer beam (21-1);
the exposed end of the second structure outer wall supporting short column II (24-2) is abutted against the outer side of the top of the second structure outer wall II (25-2), one end of the second structure plate II (26-2) is connected with the inner side of the top of the second structure outer wall II (25-2), and the other end of the second structure plate II (26-2) penetrates through the temporary structure force transfer column (18) to be connected with the second layer of force transfer beam (21-2);
the exposed end of the second support short column (24-3) of the first structure outer wall is abutted against the outer side of the top of the second support short column (25-3) of the first structure outer wall, one end of the second first structure plate (26-3) is connected with the inner side of the top of the second support short column (25-3) of the first structure outer wall, and the other end of the second first structure plate (26-3) penetrates through the temporary structure force transfer column (18) to be connected with the first layer of force transfer beam (21-3);
the exposed end of the supporting short column (24-4) of the outer wall of the second structure top plate is abutted against the outer side of the top of the outer wall (25-4) of the second structure top plate, one end of the second structure top plate (26-4) is connected with the inner side of the top of the outer wall (25-4) of the second structure top plate, and the other end of the second structure top plate (26-4) penetrates through the temporary structure force transfer column (18) to be connected with the force transfer beam (21-4) of the structure top plate.
6. The construction system for partition dismantling, replacing and supporting of the ultra-deep basement according to claim 5, characterized in that: the third layer of the force transfer beam (21-1) is positioned at the lower sides of the first support beam (13) and the second support beam (14);
the second layer of the force transfer beams (21-2) are positioned at the lower sides of the first support beam (11) and the second support beam (12);
the first layer of force transfer beams (21-3) are positioned at the lower sides of the first support beam I (7) and the first support beam II (8);
the force transfer beam (21-4) of the structural top plate is positioned on the upper sides of the first support beam I (7) and the second support beam II (8).
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