CN114032959B - Staggered support disassembly construction method for ultra-deep basement partition asynchronous excavation - Google Patents
Staggered support disassembly construction method for ultra-deep basement partition asynchronous excavation Download PDFInfo
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- CN114032959B CN114032959B CN202111560088.9A CN202111560088A CN114032959B CN 114032959 B CN114032959 B CN 114032959B CN 202111560088 A CN202111560088 A CN 202111560088A CN 114032959 B CN114032959 B CN 114032959B
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- 238000010276 construction Methods 0.000 title claims abstract description 49
- 238000005192 partition Methods 0.000 title claims abstract description 37
- 238000009412 basement excavation Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 104
- 239000010959 steel Substances 0.000 claims abstract description 104
- 230000005540 biological transmission Effects 0.000 claims abstract description 55
- 238000000638 solvent extraction Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000003111 delayed effect Effects 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Environmental & Geological Engineering (AREA)
- Foundations (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses an ultra-deep basement partition asynchronous excavation staggered support disassembly construction method, which comprises the following steps: 1. constructing a secant pile and a steel pipe upright pile; 2. a support beam is used for constructing the crown Liang Hedi; 3. partitioning a foundation pit; 4. constructing a temporary structure force transmission column and removing a first third support beam; 5. dismantling a first second support beam; 6. dismantling a first support beam and a second support beam; 7. constructing a first structural top plate and dismantling a second supporting beam; 8. removing the steel pipe column piles in the first foundation pit area layer by layer and backfilling; 9. dismantling a first support beam II; 10. constructing a top plate of a second structure; 11. and removing the steel pipe column piles in the second foundation pit area layer by layer and backfilling. According to the invention, the steel pipe column piles are flexibly selected as the partition steel pipe column piles, a temporary structure force transmission column is constructed beside each partition steel pipe column pile, a support beam is removed in a layered and segmented mode by utilizing the stress balance of a force transmission path, a structural plate is constructed, and a part of basement main body structure is completed in advance.
Description
Technical Field
The invention belongs to the technical field of ultra-deep basement partition asynchronous excavation staggered replacement support, and particularly relates to an ultra-deep basement partition asynchronous excavation staggered replacement support construction method.
Background
The construction volume of urban underground track traffic is increased, urban land is tense, the existing ultra-deep basement construction engineering is inevitably caused to approach to urban underground tracks, the construction of the ultra-deep basement can cause interference to the nearby existing buildings, the traditional disassembly and replacement support is required to be a whole layer of main body structure to be completed, the internal support is only dismantled, the whole layer of basement main body structure is required to be waited for a foundation pit with large regional span, the construction period is delayed, or the foundation pit is partitioned by utilizing a temporary wall body with a fixed position, and the construction is inflexible; therefore, an ultra-deep basement partition asynchronous excavation staggered support disassembly construction method is lacking at present, the foundation pit is partitioned by layered segmentation, partition steel pipe upright piles are flexibly selected in the foundation pit, the foundation pit is only partitioned by the support beam stress path, the support beam stress path is transmitted, the support beam can be continuously constructed upwards in sequence, and a part of basement main structure construction is finished in advance, so that the construction deployment is very facilitated.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an ultra-deep basement partition asynchronous excavation staggered disassembly and support construction method, which flexibly selects steel pipe upright posts as partition steel pipe upright posts in a foundation pit area according to actual construction progress, constructs a temporary structure force transmission post beside each partition steel pipe upright post, and utilizes stress balance of a force transmission path to dismantle supporting beams in a segmented mode and construct a structural plate, so that foundation pit displacement is controlled within an early warning range, influence on surrounding buildings and structures is minimum, and a part of basement main structure construction is completed in advance, thereby being very beneficial to construction deployment and popularization and use.
In order to solve the technical problems, the invention adopts the following technical scheme: the construction method for staggered support disassembly of ultra-deep basement partition asynchronous excavation is characterized by comprising the following steps of:
step one, constructing a secant pile and a steel pipe upright pile on the ground: a plurality of occluding piles are arranged around the outer edge of the foundation pit area, a plurality of steel pipe upright piles are arranged in the foundation pit area at the same time, and blank pile positions are reserved at the top parts of the occluding piles and the steel pipe upright piles;
step two, a supporting beam is used for constructing the crown Liang Hedi: constructing a crown beam at the empty pile position at the top of the occluding pile, and connecting a plurality of steel pipe upright piles with a plurality of occluding piles by utilizing a first supporting beam;
step three, foundation pit partitioning: a row of steel pipe column piles positioned in the middle of the foundation pit in the plurality of steel pipe column piles divide the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe column piles comprise a plurality of partition steel pipe column piles, and the construction of the first foundation pit area is faster than that of the second foundation pit area;
carrying out foundation pit earth excavation, supporting the part of the second supporting beam and the third supporting beam in the first foundation pit area and constructing a first foundation roof in a layered manner in the first foundation pit area;
carrying out foundation pit earth excavation in layers in the second foundation pit area, and supporting the part of the second supporting beam and the third supporting beam in the second foundation pit area;
the first supporting beam is divided into a first supporting beam and a second supporting beam by a row of steel pipe upright posts positioned in the middle of the foundation pit;
the second supporting beam is divided into a first supporting beam and a second supporting beam by a row of steel pipe upright posts 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 posts positioned in the middle of the foundation pit;
step four, constructing a temporary structure force transfer column and removing a third support beam I, wherein the process is as follows:
step 401, setting a temporary structure force transfer column on one side of the partition steel pipe upright post pile, wherein the height of the temporary structure force transfer column is higher than that of a second supporting beam;
step 402, arranging a third layer of force transfer beam on the temporary structure force transfer column towards one side of the first foundation pit area, wherein the height of the third layer of force transfer beam is lower than that of the first support beam, arranging a third structure outer wall support short column I on a first occluding pile opposite to one side of the temporary structure force transfer column far away from the partition steel pipe upright column pile, and arranging the third structure outer wall support short column I at the same height as the third layer of force transfer beam;
step 403, an exposed end of a first outer wall supporting short column of the third structure is abutted to the outer side of the top of the outer wall of the third structure, one end of a first structural plate is connected with the inner side of the top of the outer wall of the third structure, and the other end of the first structural plate is connected with a third layer of force transmission beam;
step 404, dismantling a first third support beam;
step 405, completing excavation of foundation pit earthwork in the second foundation pit area;
step five, dismantling a first supporting beam of a second channel, wherein the process is as follows:
step 501, raising the height of the temporary structure force transfer column, wherein the height of the temporary structure force transfer column is higher than the height of the second support beam;
step 502, arranging a second layer of force transfer beam on the temporary structure force transfer column towards one side of the first foundation pit area, wherein the height of the second layer of force transfer beam is lower than that of a second support beam, and arranging a first outer wall support short column of a second structure on a first occluding pile opposite to one side of the temporary structure force transfer column far away from the partitioned steel pipe upright pile, wherein the first outer wall support short column of the second structure is equal to the second layer of force transfer beam in height;
step 503, the exposed end of the first outer wall supporting short column of the second structure is abutted to the outer side of the top of the first outer wall of the second structure, one end of the first structural plate is connected with the inner side of the top of the first outer wall of the second structure, and the other end of the first structural plate is connected with the second layer of force transmission beam;
step 504, dismantling a first second support beam;
step 505, finishing the construction of a second foundation roof in the second foundation pit area;
step six, dismantling the first support beam and the third support beam, wherein the process is as follows:
step 601, raising the height of a temporary structure force transmission column, wherein the height of the temporary structure force transmission column is higher than that of a first supporting beam II;
602, arranging a first layer of force transfer beam on a temporary structure force transfer column towards one side of a first foundation pit area, wherein the height of the first layer of force transfer beam is lower than that of a first support beam II, and arranging a first structure outer wall support short column I on a first occluding pile opposite to one side of the temporary structure force transfer column away from a partition steel pipe upright pile, wherein the first structure outer wall support short column I is equal to the first layer of force transfer beam in height;
step 603, an exposed end of a first outer wall supporting short column of the first structure is abutted to the outer side of the top of the outer wall of the first structure, one end of a first structural plate is connected with the inner side of the top of the outer wall of the first structure, and the other end of the first structural plate is connected with a first layer of force transmission beam;
step 604, dismantling a first support beam;
step 605, arranging a second outer wall supporting short column with a third structure, which is equal to the third layer of force transfer beam in height, on a second occluding pile opposite to the side, contacted with the partitioned steel pipe column pile, of the temporary structure force transfer column;
step 606, the exposed end of the second outer wall supporting short column of the third structure is abutted to the outer side of the top of the second outer wall of the third structure, one end of the second structural plate is connected with the inner side of the top of the second outer wall of the third structure, and the other end of the first structural plate passes through the temporary structure force transmission column to be connected with the third layer force transmission beam;
step 607, dismantling a third support beam II;
step seven, constructing a first structural top plate and removing a second supporting beam, wherein the process is as follows:
701, arranging a structural roof transfer beam on a temporary structural transfer column towards the top of one side of a first foundation pit area, and arranging a first structural roof outer wall support short column on the top of a first occluding pile;
step 702, an exposed end of a first structural roof outer wall supporting short column is abutted to the outer side of the top of a first structural roof outer wall, one end of the first structural roof is connected with the inner side of the top of the first structural roof outer wall, and the other end of the first structural roof is connected with a structural roof force transmission beam;
703, arranging a second structural outer wall supporting short column II with the same height as a second layer of force transfer beam on a second occluding pile opposite to the side, contacted with the partitioned steel pipe column pile, of the temporary structural force transfer column;
step 704, the exposed end of the second structural outer wall supporting short column is abutted to the outer side of the top of the second structural outer wall, one end of the second structural plate is connected with the inner side of the top of the second structural outer wall, and the other end of the second structural plate passes through the temporary structural force transfer column to be connected with the second layer of force transfer beam;
step 705, dismantling a second support beam;
step eight, dismantling steel pipe upright piles in the first foundation pit area layer by layer and filling backfill materials between the first occluding piles and the first outer wall;
step nine, dismantling a first supporting beam II, wherein the process is as follows:
step 901, arranging a first structural outer wall supporting short column II with the same height as a first layer of force transfer beam on a second occluding pile opposite to the side, contacted with the partitioned steel pipe column pile, of the temporary structural force transfer column;
902, abutting the exposed end of a second outer wall support short column of the first structure against the outer side of the top of the second outer wall of the first structure, wherein one end of a second structural plate is connected with the inner side of the top of the second outer wall of the first structure, and the other end of the second structural plate penetrates through a temporary structure force transmission column to be connected with a first layer of force transmission beam;
step 903, dismantling a first support beam II;
tenth, constructing a top plate of the second structure: arranging a second structural roof outer wall supporting short column at the top of the second occluding pile, wherein the exposed end of the second structural roof outer wall supporting short column is abutted to the outer side of the top of the second structural roof outer wall, one end of the second structural roof is connected with the inner side of the top of the second structural roof outer wall, and the other end of the second structural roof passes through the temporary structural force transfer column to be connected with the structural roof force transfer beam;
and step eleven, removing the steel pipe column piles in the second foundation pit area layer by layer, and filling backfill between the second occluding piles and the second outer wall.
The above-mentioned construction method is characterized in that: the snap piles in the first foundation pit area are first snap piles, the snap piles in the second foundation pit area are second snap piles, the steel pipe column pile located in the first foundation pit area in the plurality of steel pipe column piles is a first steel pipe column pile, and the steel pipe column pile located in the second foundation pit area in the plurality of steel pipe column piles is a second steel pipe column pile.
The above-mentioned construction method is characterized in that: one end of the first supporting beam away from the second supporting beam is connected with the first crown beam, and one end of the second supporting beam away from the first supporting beam is connected with the second crown beam;
one end of the second support beam away from the second support beam and one end of the third support beam away from the third support beam are connected with the first occluding pile through the first waist beam, and one end of the second support beam away from the second support beam and one end of the third support beam away from the third support beam are connected with the second occluding pile through the second waist beam.
The above-mentioned construction method is characterized in that: the first structural roof outer wall support short column is connected with the first occluding pile through a first crown beam; the outer wall support short column of the top plate of the second structure is connected with the second occluding pile through the second crown beam.
The method has the advantages that the steel pipe upright posts are flexibly selected as the partitioned steel pipe upright posts in the foundation pit area according to the actual construction progress, a temporary structure force transmission post is constructed beside each partitioned steel pipe upright post, the support beams are removed in a layered and segmented mode by using the stress balance of the force transmission path, the structural plates are constructed, the foundation pit displacement is controlled within the early warning range, the influence on surrounding buildings and structures is minimum, a part of basement main structure construction is completed in advance, construction deployment is facilitated, and popularization and use are facilitated.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
FIG. 1 is a schematic diagram of the partition structure of an ultra-deep basement according to the present invention.
Fig. 2 is a cross-sectional view A-A of the first foundation pit area of fig. 1 at the stage of excavation of foundation pit earth in the first foundation pit area and the second foundation pit area.
Fig. 3 is a cross-sectional view A-A of the construction stage of the first foundation pit area in which the third structural slab is constructed and the second foundation pit area in which the excavation of the foundation pit in the first foundation pit area is completed in fig. 1.
Fig. 4 is a cross-sectional view A-A of the first foundation pit area of fig. 1 at the stage of construction of the second structural panel and the foundation roof in the second foundation pit area.
Fig. 5 is a cross-sectional view A-A of the first foundation pit area in fig. 1 at a second stage of construction of a first structural panel and a second structural panel in the second foundation pit area.
Fig. 6 is a cross-sectional view A-A of the first foundation pit area of fig. 1 at a second stage of construction of a first structural ceiling and a second structural ceiling.
Fig. 7 is a cross-sectional view A-A of the first foundation pit area of fig. 1 at two construction stages of removing the lower steel tube column pile section of the first structural roof and constructing the first structural panel in the second foundation pit area.
Fig. 8 is a cross-sectional view A-A of the first foundation pit area of fig. 1 with a lower steel tubular pile section of the first structural panel removed and a second structural ceiling constructed in the second foundation pit area.
Fig. 9 is a cross-sectional view A-A of the construction stage of fig. 1 with the second structural panel lower steel tube column pile section removed in the first foundation pit area and the second structural roof lower steel tube column pile section removed in the second foundation pit area.
Fig. 10 is a cross-sectional view A-A of the construction stage of fig. 1 with the third structural panel lower steel tube column pile section removed in the first foundation pit area and the first structural roof lower steel tube column pile section removed in the second foundation pit area.
Fig. 11 is a cross-sectional view A-A of the basement body structure construction completion in the first foundation pit area and the construction stage of removing the lower steel tube column pile segment of the second structural roof in the second foundation pit area of fig. 1.
FIG. 12 is a cross-sectional view A-A of the completion of the construction of the main structure of the basement in the foundation pit area of FIG. 1.
Fig. 13 is a flow chart of the method of the present invention.
Reference numerals illustrate:
1-a first snap-in pile; 2-a first snap-in pile; 3-a first steel pipe column pile;
4-a second steel pipe column pile; 5-a first crown bar; 6-a second crown beam;
7-a first support beam I; 8-a first supporting beam II; 9-a first waist beam;
10-a second waist beam; 11-a second support beam I; 12-a second supporting beam II;
13-a third support beam I; 14-a third support beam II; 15-foundation roof;
16-foundation pit earthwork; 17-partitioning steel pipe column piles; 18-temporary structural force transfer column;
19-1-third structural outer wall support stub one; 19-2-a second structural exterior wall support stub one;
19-3-first structural exterior wall support stub one; 19-4-a first structural roof exterior wall support stub;
20-1 to a first outer wall of a third structure; 20-2, a first outer wall of a second structure;
20-3, a first structural outer wall I; 20-4 parts of a first structural roof outer wall;
21-1 to a third layer of force transfer beam; 21-2-a second layer of force transfer beam;
21-3-a first layer of force transfer beam; 21-4, a structural roof transfer beam;
22-1-third structural panel one; 22-2-second structural panel one;
22-3-first structural panel one; 22-4-a first structural ceiling;
23-backfilling; 24-1-a third structural outer wall support short column II;
24-2-second structural outer wall support post two; 24-3-a first structural outer wall support post two;
24-4-a second structural roof exterior wall support stub; 25-1 to a second outer wall with a third structure;
25-2, a second structural outer wall; 25-3, a first outer wall of a second structure;
25-4 parts of a top plate outer wall of a second structure; 26-1-a third structural panel II;
26-2-second structural plate II; 26-3-a first structural panel II; 26-4-second structural ceiling.
Detailed Description
As shown in fig. 1 to 13, the construction method for staggered support disassembly in ultra-deep basement partition asynchronous excavation comprises the following steps:
step one, constructing a secant pile and a steel pipe upright pile on the ground: a plurality of occluding piles are arranged around the outer edge of the foundation pit area, a plurality of steel pipe upright piles are arranged in the foundation pit area at the same time, and blank pile positions are reserved at the top parts of the occluding piles and the steel pipe upright piles;
step two, a supporting beam is used for constructing the crown Liang Hedi: constructing a crown beam at the empty pile position at the top of the occluding pile, and connecting a plurality of steel pipe upright piles with a plurality of occluding piles by utilizing a first supporting beam;
step three, foundation pit partitioning: a row of steel pipe column piles positioned in the middle of the foundation pit in the plurality of steel pipe column piles divide the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe column piles comprise a plurality of partition steel pipe column piles 17, and the construction of the first foundation pit area is faster than that of the second foundation pit area;
foundation pit earthwork 16 excavation, supporting of the parts of the second supporting beam and the third supporting beam in the first foundation pit area and construction of the first foundation roof 15 are carried out in layers in the first foundation pit area;
the foundation pit earthwork 16 excavation is carried out in the second foundation pit area in a layered mode, and the second supporting beam and the third supporting beam are supported at the part, located in the second foundation pit area;
the first supporting beam is divided into a first supporting beam 7 and a second supporting beam 8 by a row of steel pipe upright posts positioned in the middle of the foundation pit;
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 posts positioned 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 posts positioned in the middle of the foundation pit;
step four, constructing a temporary structure force transfer column and removing a third support beam I, wherein the process is as follows:
step 401, setting a temporary structure force transmission column 18 on one side of the partition steel pipe upright post pile 17, wherein the height of the temporary structure force transmission column 18 is higher than that of a third support beam II 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 the third layer of support beam 13, arranging a third structure outer wall support short column 19-1 on a first occluding pile 1 opposite to one side of the temporary structure force transfer column 18 far away from the partition steel pipe upright pile 17, and arranging the third structure outer wall support short column 19-1 to be equal to the third layer of force transfer beam 21-1 in height;
step 403, the exposed end of the first 19-1 outer wall support post of the third structure is abutted to the outer side of the top of the first 20-1 outer wall of the third structure, one end of the first 22-1 structural plate is connected with the inner side of the top of the first 20-1 outer wall of the third structure, and the other end of the first 22-1 structural plate is connected with the third 21-1 layer force transfer beam;
step 404, dismantling a first support beam 13 of a third channel;
step 405, excavating foundation pit earthwork 16 in the second foundation pit area;
step five, dismantling a first supporting beam of a second channel, wherein the process is as follows:
step 501, raising the height of the temporary structure force transmission column 18, wherein 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 beams 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 beams 21-2 is lower than that of the second support beam 12, arranging a first outer wall support short column 19-2 on a first occluding pile 1 which is opposite to one side of the temporary structure force transfer column 18, which is far away from the partition steel pipe upright column pile 17, and arranging the first outer wall support short column 19-2 at the same height as the second layer of force transfer beams 21-2;
step 503, the exposed end of the first 19-2 outer wall support short column of the second structure is abutted to the outer side of the top of the first 20-2 outer wall of the second structure, one end of the first 22-2 structural plate is connected with the inner side of the top of the first 20-2 outer wall of the second structure, and the other end of the first 22-2 structural plate is connected with the second layer of force transmission beam 21-2;
step 504, dismantling the first support beam 11 of the second channel;
step 505, finishing the construction of a second foundation roof in the second foundation pit area;
step six, dismantling the first support beam and the third support beam, wherein the process is as follows:
step 601, raising the height of the temporary structure force transmission column 18, wherein the height of the temporary structure force transmission column 18 is higher than that of the first support beam II 8;
602, arranging a first layer of force transfer beams 21-3 on a 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 occluding pile 1 which is opposite to one side of the temporary structure force transfer column 18, which is far away from a partition steel pipe upright column pile 17, and the first structure outer wall support short column I19-3 is equal to the first layer of force transfer beams 21-3 in height;
step 603, the exposed end of the first structural outer wall supporting short column I19-3 is abutted to the outer side of the top of the first structural outer wall I20-3, one end of the first structural plate I22-3 is connected with the inner side of the top of the first structural outer wall I20-3, and the other end of the first structural plate I22-3 is connected with the first layer of force transfer beam 21-3;
step 604, dismantling the first support beam 7;
step 605, arranging a second outer wall supporting short column 24-1 with a third structure, which is equal to the third layer of force transmission beam 21-1 in height, on a second occluding pile 2 opposite to the side, contacted with the partitioned steel pipe upright pile 17, of the temporary structure force transmission column 18;
step 606, the exposed end of the second outer wall support short column 24-1 of the third structure is abutted to the outer side of the top of the second outer wall 25-1 of the third structure, one end of the second structural plate 26-1 is connected with the inner side of the top of the second outer wall 25-1 of the third structure, and the other end of the first structural plate 22-1 passes through the temporary structure force transmission column 18 to be connected with the third layer force transmission beam 21-1;
step 607, dismantling a third support beam II 14;
step seven, constructing a first structural top plate and removing a second supporting beam, wherein the process is as follows:
701, arranging a structural roof transfer beam 21-4 on the temporary structural transfer column 18 towards the top of one side of the first foundation pit area, and arranging a first structural roof outer wall support short column 19-4 on the top of the first occluding pile 1;
step 702, the exposed end of the first structural roof outer wall supporting short column 19-4 abuts against the outer side of the top of the first structural roof outer wall 20-4, one end of the first structural roof 22-4 is connected with the inner side of the top of the first structural roof outer wall 20-4, and the other end of the first structural roof 22-4 is connected with the structural roof force transfer beam 21-4;
step 703, arranging second structural outer wall supporting short columns 24-2 with the same height as the second layer of force transmission beams 21-2 on a second occluding pile 2 opposite to the side, contacted with the partitioned steel pipe upright piles 17, of the temporary structural force transmission columns 18;
step 704, the exposed end of the second structural outer wall support short column II 24-2 is abutted against the outer side of the top of the second structural outer wall II 25-2, one end of the second structural plate II 26-2 is connected with the inner side of the top of the second structural outer wall II 25-2, and the other end of the second structural plate II 22-2 passes through the temporary structural force transfer column 18 to be connected with the second layer of force transfer beam 21-2;
step 705, dismantling a second support beam 12;
step eight, dismantling steel pipe upright piles in the first foundation pit area layer by layer and filling backfill 23 between the first occluding pile 1 and the first outer wall;
step nine, dismantling a first supporting beam II, wherein the process is as follows:
step 901, arranging a first structural outer wall supporting short column II 24-3 with the same height as a first layer of force transfer beam 21-3 on a second occluding pile 2 opposite to the side, contacted with the partitioned steel pipe upright pile 17, of the temporary structural force transfer column 18;
step 902, the exposed end of a second outer wall supporting short column 24-3 of the first structure is abutted to the outer side of the top of a second outer wall 25-3 of the first structure, one end of a second structural plate 26-3 is connected with the inner side of the top of the second outer wall 25-3 of the first structure, and the other end of the second structural plate 22-3 passes through a temporary structure force transfer column 18 to be connected with a first layer of force transfer beam 21-3;
step 903, dismantling a first support beam II 8;
tenth, constructing a top plate of the second structure: a second structure top plate outer wall supporting short column 24-4 is arranged at the top of the second occluding pile 2, the exposed end of the second structure top plate outer wall supporting short column 24-4 is abutted to 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 passes through the temporary structure force transmission column 18 to be connected with the structure top plate force transmission beam 21-4;
and step eleven, removing the steel pipe column piles in the second foundation pit area layer by layer and filling backfill 23 between the second occluding pile 2 and the second outer wall.
In this embodiment, the engagement pile located in the first foundation pit area of the engagement piles is a first engagement pile 1, the engagement pile located in the second foundation pit area of the engagement piles is a second engagement pile 2, the steel pipe column pile located in the first foundation pit area of the steel pipe column piles is a first steel pipe column pile 3, and the steel pipe column pile located in the second foundation pit area of the steel pipe column piles is a second steel pipe column pile 4.
In this embodiment, one end of the first support beam 7 away from the second support beam 8 is connected to the first crown beam 5, and one end of the second support beam 8 away from the first support beam 7 is connected to the second crown beam 6;
one end of the second channel support beam 11, which is far away from the second channel support beam 12, and one end of the third channel support beam 13, which is far away from the third channel support beam 14, are connected with the first occluding pile 1 through the first waist beam 9, and one end of the second channel support beam 12, which is far away from the second channel support beam 11, and one end of the third channel support beam 14, which is far away from the third channel support beam 13, are connected with the second occluding pile 2 through the second waist beam 10.
In this embodiment, the first structural roof outer wall support stub 19-4 is connected to the first snap-in pile 1 through the first crown beam 5; the second structural roof exterior wall support stud 24-4 is connected to the second snap post 2 by a second crown beam 6.
When the invention is used, the steel pipe column piles are flexibly selected as the partition steel pipe column piles in the foundation pit area according to the actual construction progress, a temporary structure force transmission column is constructed beside each partition steel pipe column pile, the support beams are removed in a layered and segmented mode by utilizing the stress balance of the force transmission path, the structural plates are constructed, the foundation pit displacement is 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, and construction deployment is facilitated.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any simple modification, variation and equivalent structural changes made to the above embodiment according to the technical substance of the present invention still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The construction method for staggered support disassembly of ultra-deep basement partition asynchronous excavation is characterized by comprising the following steps of:
step one, constructing a secant pile and a steel pipe upright pile on the ground: a plurality of occluding piles are arranged around the outer edge of the foundation pit area, a plurality of steel pipe upright piles are arranged in the foundation pit area at the same time, and blank pile positions are reserved at the top parts of the occluding piles and the steel pipe upright piles;
step two, a supporting beam is used for constructing the crown Liang Hedi: constructing a crown beam at the empty pile position at the top of the occluding pile, and connecting a plurality of steel pipe upright piles with a plurality of occluding piles by utilizing a first supporting beam;
step three, foundation pit partitioning: a row of steel pipe column piles positioned in the middle of the foundation pit in the plurality of steel pipe column piles divide the foundation pit into a first foundation pit area and a second foundation pit area, the row of steel pipe column piles comprise a plurality of partition steel pipe column piles (17), and the construction of the first foundation pit area is faster than that of the second foundation pit area;
the foundation pit earthwork (16) excavation, the support of the part of the second supporting beam and the third supporting beam in the first foundation pit area and the construction of the first foundation roof (15) are carried out in a layered manner in the first foundation pit area;
the foundation pit earthwork (16) excavation is carried out in the second foundation pit area in a layering manner, and the second supporting beam and the third supporting beam are supported at the inner part of the second foundation pit area;
the first supporting beam is divided into a first supporting beam (7) and a second supporting beam (8) by a row of steel pipe upright posts positioned in the middle of the foundation pit;
the second supporting beam is divided into a first second supporting beam (11) and a second supporting beam (12) 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 (13) and a second supporting beam (14) by a row of steel pipe upright piles positioned in the middle of the foundation pit;
step four, constructing a temporary structure force transfer column and removing a third support beam I, wherein the process is as follows:
step 401, arranging a temporary structure force transmission column (18) on one side of the partition steel pipe upright column pile (17), wherein the height of the temporary structure force transmission column (18) is higher than that of a third support beam II (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 the third support beam (13), arranging a third structure outer wall support short column I (19-1) on a first occluding pile (1) opposite to one side of the temporary structure force transfer column (18) far away from the partition steel pipe upright pile (17), and arranging the third structure outer wall support short column I (19-1) to be equal to the third layer of force transfer beam (21-1);
step 403, an exposed end of a first outer wall supporting short column (19-1) of the third structure is abutted against the outer side of the top of the first outer wall (20-1) of the third structure, one end of a first structural plate (22-1) is connected with the inner side of the top of the first outer wall (20-1) of the third structure, and the other end of the first structural plate (22-1) is connected with a third layer of force transmission beam (21-1);
step 404, dismantling a first third support beam (13);
step 405, excavating foundation pit earthwork (16) in the second foundation pit area;
step five, dismantling a first supporting beam of a second channel, wherein the process is as follows:
step 501, raising the height of the temporary structure force transmission column (18), wherein 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 beams (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 beams (21-2) is lower than that of the second support beam (12), arranging a second structure outer wall support short column I (19-2) on a first occluding pile (1) opposite to one side of the temporary structure force transfer column (18) far away from the partition steel pipe upright pile (17), and enabling the second structure outer wall support short column I (19-2) to be equal to the second layer of force transfer beams (21-2);
step 503, the exposed end of the first outer wall supporting short column (19-2) of the second structure is abutted against the outer side of the top of the first outer wall (20-2) of the second structure, one end of the first structural plate (22-2) is connected with the inner side of the top of the first outer wall (20-2) of the second structure, and the other end of the first structural plate (22-2) is connected with the second layer of force transmission beam (21-2);
step 504, dismantling a first second support beam (11);
step 505, finishing the construction of a second foundation roof in the second foundation pit area;
step six, dismantling the first support beam and the third support beam, wherein the process is as follows:
step 601, raising the height of the temporary structure force transmission column (18), wherein the height of the temporary structure force transmission column (18) is higher than that of the first support beam II (8);
602, arranging a first layer of force transfer beams (21-3) on a 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 I (19-3) on a first occluding pile (1) opposite to one side of the temporary structure force transfer column (18) away from a partition steel pipe upright pile (17), and enabling the first structure outer wall support short column I (19-3) to be at the same height as the first layer of force transfer beams (21-3);
step 603, the exposed end of the first structural outer wall supporting short column I (19-3) is abutted against the outer side of the top of the first structural outer wall I (20-3), one end of the first structural plate I (22-3) is connected with the inner side of the top of the first structural outer wall I (20-3), and the other end of the first structural plate I (22-3) is connected with the first layer of force transmission beam (21-3);
step 604, dismantling a first support beam I (7);
step 605, arranging a second outer wall supporting short column (24-1) of a third structure, which is equal to the third layer of force transmission beam (21-1), on a second occluding pile (2) opposite to the side, contacted with the partitioned steel pipe upright pile (17), of the temporary structure force transmission column (18);
step 606, the exposed end of the second outer wall supporting short column (24-1) of the third structure is abutted to the outer side of the top of the second outer wall (25-1) of the third structure, one end of the second structural plate (26-1) is connected with the inner side of the top of the second outer wall (25-1) of the third structure, and the other end of the first structural plate (22-1) passes through the temporary structure force transmission column (18) to be connected with the third layer force transmission beam (21-1);
step 607, dismantling a third support beam II (14);
step seven, constructing a first structural top plate and removing a second supporting beam, wherein the process is as follows:
701, arranging a structural roof transfer beam (21-4) on a temporary structural transfer column (18) towards the top of one side of a first foundation pit area, and arranging a first structural roof outer wall support short column (19-4) on the top of a first occluding pile (1);
step 702, an exposed end of a first structural roof outer wall supporting short column (19-4) is abutted against the outer side of the top of a first structural roof outer wall (20-4), one end of a first structural roof (22-4) is connected with the inner side of the top of the first structural roof outer wall (20-4), and the other end of the first structural roof (22-4) is connected with a structural roof force transfer beam (21-4);
703, arranging a second structural outer wall support short column II (24-2) with the same height as a second layer of force transmission beam (21-2) on a second occluding pile (2) opposite to the side, contacted with the partition steel pipe upright pile (17), of the temporary structural force transmission column (18);
step 704, the exposed end of the second structural outer wall support short column II (24-2) is abutted against the outer side of the top of the second structural outer wall II (25-2), one end of the second structural plate II (26-2) is connected with the inner side of the top of the second structural outer wall II (25-2), and the other end of the second structural plate II (22-2) penetrates through the temporary structural force transmission column (18) to be connected with the second layer of force transmission beam (21-2);
step 705, dismantling a second support beam (12);
step eight, dismantling steel pipe upright piles in the first foundation pit area layer by layer and filling backfill materials (23) between the first occluding piles (1) and the first outer wall;
step nine, dismantling a first supporting beam II, wherein the process is as follows:
step 901, arranging a first structural outer wall support short column II (24-3) with the same height as a first layer of force transfer beam (21-3) on a second occluding pile (2) opposite to the side, contacted with the partition steel pipe upright pile (17), of a temporary structural force transfer column (18);
902, abutting the exposed end of a second outer wall support short column (24-3) of the first structure against the outer side of the top of a second outer wall (25-3) of the first structure, connecting one end of a second structural plate (26-3) with the inner side of the top of the second outer wall (25-3) of the first structure, and connecting the other end of the second structural plate (22-3) with a first layer of force transmission beam (21-3) through a temporary structure force transmission column (18);
step 903, dismantling a first support beam II (8);
tenth, constructing a top plate of the second structure: a second structure top plate outer wall supporting short column (24-4) is arranged at the top of the second occluding pile (2), the exposed end of the second structure top plate outer wall supporting short column (24-4) is abutted to 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) passes through the temporary structure force transmission column (18) to be connected with the structure top plate force transmission beam (21-4);
and step eleven, removing the steel pipe column piles in the second foundation pit area layer by layer, and filling backfill (23) between the second occluding pile (2) and the second outer wall.
2. The construction method for staggered support disassembly in ultra-deep basement partition asynchronous excavation is characterized by comprising the following steps of: the snap piles in the first foundation pit area are first snap piles (1), the snap piles in the second foundation pit area are second snap piles (2), the steel pipe column pile located in the first foundation pit area in the plurality of steel pipe column piles is a first steel pipe column pile (3), and the steel pipe column pile located in the second foundation pit area in the plurality of steel pipe column piles is a second steel pipe column pile (4).
3. The construction method for staggered support disassembly in ultra-deep basement partition asynchronous excavation is characterized by comprising the following steps of: one end of the first supporting beam I (7) far away from the first supporting beam II (8) is connected with the first crown beam (5), and one end of the first supporting beam II (8) far away from the first supporting beam I (7) is connected with the second crown beam (6);
one end of a second support beam I (11) far away from a second support beam II (12) and one end of a third support beam I (13) far away from a third support beam II (14) are connected with the first occluding pile (1) through a first waist beam (9), one end of the second support beam II (12) far away from the second support beam I (11) and one end of the third support beam II (14) far away from the third support beam I (13) are connected with the second occluding pile (2) through a second waist beam (10).
4. The construction method for staggered support disassembly in ultra-deep basement partition asynchronous excavation is characterized by comprising the following steps of: the first structural roof outer wall supporting short column (19-4) is connected with the first occluding pile (1) through the first crown beam (5); the outer wall supporting short column (24-4) of the top plate of the second structure is connected with the second occluding pile (2) through the second crown beam (6).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100925023B1 (en) * | 2008-08-26 | 2009-11-04 | 주식회사 벤트코리아 | Construction method using pile head reinforcing apparatus for a temporary structure |
| CN105951843A (en) * | 2016-06-17 | 2016-09-21 | 中建八局第建设有限公司 | Construction method of deep foundation pit |
| CN111945743A (en) * | 2020-08-15 | 2020-11-17 | 中铁十一局集团第一工程有限公司 | Multi-layer unbalanced foundation pit supporting method suitable for staged excavation |
| CN112832252A (en) * | 2021-01-06 | 2021-05-25 | 深圳市工勘岩土集团有限公司 | Deep foundation pit supporting construction method with large height difference of two sides |
| CN113737857A (en) * | 2021-10-09 | 2021-12-03 | 中国建筑第二工程局有限公司 | Be used for deep pipe gallery structure and major structure to build connection structure again and worker's method thereof |
-
2021
- 2021-12-20 CN CN202111560088.9A patent/CN114032959B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100925023B1 (en) * | 2008-08-26 | 2009-11-04 | 주식회사 벤트코리아 | Construction method using pile head reinforcing apparatus for a temporary structure |
| CN105951843A (en) * | 2016-06-17 | 2016-09-21 | 中建八局第建设有限公司 | Construction method of deep foundation pit |
| CN111945743A (en) * | 2020-08-15 | 2020-11-17 | 中铁十一局集团第一工程有限公司 | Multi-layer unbalanced foundation pit supporting method suitable for staged excavation |
| CN112832252A (en) * | 2021-01-06 | 2021-05-25 | 深圳市工勘岩土集团有限公司 | Deep foundation pit supporting construction method with large height difference of two sides |
| CN113737857A (en) * | 2021-10-09 | 2021-12-03 | 中国建筑第二工程局有限公司 | Be used for deep pipe gallery structure and major structure to build connection structure again and worker's method thereof |
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