CN110965586B - Construction method of multi-layer basement structure of municipal road - Google Patents
Construction method of multi-layer basement structure of municipal road Download PDFInfo
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- CN110965586B CN110965586B CN201911165016.7A CN201911165016A CN110965586B CN 110965586 B CN110965586 B CN 110965586B CN 201911165016 A CN201911165016 A CN 201911165016A CN 110965586 B CN110965586 B CN 110965586B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- 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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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
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Abstract
The invention relates to the technical field of multilayer basement structure construction, in particular to a method for constructing a municipal road multilayer basement structure, which comprises the following steps: a. planning the position of a foundation pit on the construction ground, and arranging a temporary road on the construction ground, wherein the temporary road is positioned around the foundation pit; b. dividing the foundation pit into n layers of pit bodies from top to bottom according to design requirements, wherein the numerical value of n is the same as the number of the basement layers, the numerical value of n is a natural number, and the height of each layer of pit body is the same as the height of the basement layer with the corresponding number of the basement layers; c. the construction of digging the foundation pit, the construction from the top down of digging the foundation pit is carried out in proper order, and the construction from the top down layer of foundation pit is advanced progressively, all is provided with corresponding when every layer of pit body is under construction and struts, guarantees the security of every layer of construction to showing the security that has improved foundation pit construction, just also showing the security that has improved town road multilayer basement structure construction.
Description
Technical Field
The invention relates to the technical field of construction of multilayer basement structures, in particular to a method for constructing a multilayer basement structure of a municipal road.
Background
The construction of town road multilayer basement structure, it is excavation or pouring bored concrete pile carry out foundation ditch support to be usually at construction ground upper earth, when there is the building in both sides, cause the building unstability easily and empty the collapse, dangerous during the construction is big, and the security is very low, and in addition, pouring bored concrete pile needs more reinforced concrete volume, and construction cost is high.
Disclosure of Invention
The invention aims to provide a construction method of a multi-layer basement structure of a municipal road with high safety.
The technical scheme adopted by the invention for solving the technical problems is as follows: the method for constructing the multi-layer basement structure of the municipal road comprises the following steps:
a. planning the position of a foundation pit on the construction ground, and arranging a temporary road on the construction ground, wherein the temporary road is positioned around the foundation pit;
b. dividing the foundation pit into n layers of pit bodies from top to bottom according to design requirements, wherein the numerical value of n is the same as the number of the basement layers, the numerical value of n is a natural number, and the height of each layer of pit body is the same as the height of the basement layer with the corresponding number of the basement layers;
c. and (3) excavating the foundation pit, wherein the excavation construction is sequentially carried out from top to bottom, namely after the construction of the upper layer of pit body is finished, the construction of the lower layer of pit body is carried out until the construction of the bottommost layer of pit body is finished.
Further, in the step a, after the temporary road is set, a water retaining fence structure is arranged on the construction ground between the foundation pit and the temporary road, and the water retaining fence structure is located around the foundation pit.
Further, the water retaining fence structure comprises water retaining plates, mounting upright columns are arranged on two sides of each water retaining plate, the water retaining plates are embedded into the construction ground by 50mm at least, and the mounting upright columns are embedded into the construction ground by 500mm at least.
Further, the water retaining fence structure further comprises a grid fence, and the grid fence is connected and arranged between the mounting upright posts through connecting bolts.
Further, in the step c, the concrete steps of constructing each layer of pit body are as follows: firstly, paving a concrete frame beam at the top of a basement on the surface of the corresponding pit body earthwork, and dividing the surface of the corresponding pit body earthwork into a plurality of local areas from left to right or from right to left according to the concrete frame beam at the top of the basement; then, carrying out excavation work on a local area positioned at the edge of the pit body, after the excavation work of the local area at the edge of the pit body is finished, reinforcing the peripheral side walls of the excavated local area by spraying concrete, and meanwhile, arranging a plurality of temporary supporting devices in the excavated local area, wherein the temporary supporting devices support the concrete frame beam at the top of the basement; and finally, sequentially completing the excavation work of other local areas until the construction of the layer of pit body is completed.
Further, in the step c, a motorized moving hanging basket for moving constructors is arranged on the construction ground around the foundation pit.
Furthermore, a lifting platform used for the soil loading dump truck to move up and down is arranged on the construction ground around the foundation pit.
Further, in the step c, after the construction of the bottom layer of pit body is completed, a reinforced concrete permanent support column is connected and arranged below the concrete frame beam at the top of each layer of basement.
The invention has the beneficial effects that: according to the construction method, the foundation pit is sequentially divided into n layers of pit bodies from top to bottom according to design requirements, when the foundation pit is excavated, the excavation construction is sequentially carried out from top to bottom, the construction of the foundation pit is carried out from top to bottom, corresponding supports are arranged when each layer of pit body is constructed, and the safety of each layer of construction is ensured, so that the safety of the foundation pit construction is remarkably improved, and the safety of the construction of the multi-layer basement structure of the municipal road is also remarkably improved.
Drawings
FIG. 1 is a schematic plan view of the present invention during its construction;
FIG. 2 is a schematic elevation view of the present invention during construction;
fig. 3 is a structural schematic view of a water-retaining fence structure;
labeled as: the construction method comprises the following steps of construction ground 1, a foundation pit 2, a temporary road 3, a pit body 4, a water retaining fence structure 5, a water retaining plate 6, an installation upright post 7, a grid fence 8, a connecting bolt 9, a basement top concrete frame beam 10, a local area 11, a side wall 12, a temporary supporting device 13, a mobile hanging basket 14, a soil loading dump truck 15, a lifting platform 16 and a reinforced concrete permanent supporting column 17.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in figures 1 and 2, the method for constructing the multi-layer basement structure of the municipal road is characterized by comprising the following steps:
a. the method comprises the steps that the position of a foundation pit 2 is planned on a construction ground 1, a temporary road 3 is arranged on the construction ground 1, the temporary road 3 is located around the foundation pit 2, and vehicles and constructors enter and exit the temporary road 3 during construction;
b. dividing the foundation pit 2 into n layers of pit bodies 4 from top to bottom in sequence according to design requirements, wherein the numerical value of n is the same as the number of the basement layers, the numerical value of n is a natural number, and the height of each layer of pit body 4 is the same as the height of the basement layer with the corresponding number of the basement layers;
c. the excavation of the foundation pit 2 is performed by adopting a reverse construction method, the construction of the excavation of the foundation pit 2 is performed from top to bottom, namely after the construction of the upper layer of pit body 4 is completed, the construction of the lower layer of pit body 4 is performed until the construction of the bottommost layer of pit body 4 is completed.
Adopt the low bank to carry out the manger plate around current foundation ditch 2, the manger plate effect is not good, and in step a, temporary road 3 sets up the completion back, sets up manger plate rail structure 5 on construction ground 1 between foundation ditch 2 and temporary road 3, and manger plate rail structure 5 is located foundation ditch 2 all around, carries out the manger plate through manger plate rail structure 5. The preferable structure of the water retaining fence structure 5 of the invention is as follows: as shown in fig. 3, the water fence structure 5 includes a water guard 6, and mounting posts 7 are provided on both sides of the water guard 6. In order to ensure the strength of fixing the water retaining fence structure 5 on the construction ground 1, the water retaining plate 6 is embedded into the construction ground 1 by 50mm at least, and the mounting upright post 7 is embedded into the construction ground 1 by 500mm at least. In order to facilitate the installation of the upright post 7 embedded under the construction ground 1, the lower end part of the installation upright post 7 is pointed. This manger plate rail structure 5's material is preferably steel, and breakwater 6 is connected through the bolt with installation stand 7, and after the construction was accomplished, demolishs manger plate rail structure 5, and manger plate rail structure 5 still can be under construction in other places and use, realizes manger plate rail structure 5's used repeatedly. During construction, in order to improve the ventilation of the foundation pit 2 and improve the fluidity of air during construction, grid fences 8 may be further provided, and the grid fences 8 are connected and disposed between the mounting pillars 7 by connecting bolts 9. Although the water retaining fence structure 5 is convenient to use and good in effect, the water retaining fence structure is inconvenient to arrange in some places, and when the place is encountered, where the water retaining fence structure 5 is inconvenient to arrange, a ridge can be locally arranged to retain water, for example, the place for installing equipment for construction.
In step c, the construction of each layer of pit body 4 preferably comprises the following specific steps: as shown in fig. 1 and 2, firstly, the basement top concrete frame beam 10 is paved on the surface of the corresponding pit body 4, and the surface of the corresponding pit body 4 is divided into a plurality of local areas 11 from left to right or from right to left according to the basement top concrete frame beam 10; then, carrying out excavation work on a local area 11 positioned at the edge of the pit body 4, after the excavation work of the local area 11 positioned at the edge of the pit body 4 is finished, reinforcing the peripheral side walls 12 of the excavated local area 11 by spraying concrete, meanwhile, arranging a plurality of temporary supporting devices 13 in the excavated local area 11, wherein the height of each temporary supporting device 13 is the same as that of the corresponding pit body 4, the upper end and the lower end of each temporary supporting device are respectively provided with a supporting pad, and the temporary supporting devices 13 support the concrete frame beam 10 at the top of the basement; and finally, sequentially finishing the earth excavation work of other local areas 11 until the construction of the layer of pit body 4 is finished. The concrete frame beam 10 at the top of the basement is of a frame grid structure, each grid corresponds to one local area 11, the local areas 11 at the edges of the pit bodies 4 are excavated, after the excavation is finished, the peripheral side walls 12 are reinforced by concrete spraying, and the concrete spraying reinforcement of the side walls 12 is also constructed by adopting a reverse construction method from top to bottom, so that the construction strength of the whole foundation pit 2 is ensured. After the construction of the bottom layer of pit body 4 is completed, a reinforced concrete permanent support column 17 is connected and arranged below the concrete frame beam 10 at the top of each layer of basement, and the temporary support device 13 is detached at the same time. Therefore, the basement frame shear wall design structure after construction is large in supporting force, and safety is remarkably improved.
In order to facilitate the delivery of excavated earthwork spoil, a lifting platform 16 for moving an earth-loading dump truck 15 up and down is provided on the construction ground 1 around the foundation pit 2. During construction, the soil loading dump truck 15 is integrally conveyed to a foundation pit 2 under construction through the lifting platform 16, excavated soil waste is placed in the soil loading dump truck 15, and the soil loading dump truck 15 with the soil waste is integrally conveyed to the construction ground 1 through the lifting platform 16. The spoil is only needed to be transported once by adopting the mode, so that the workload of transporting the spoil is reduced, and the construction efficiency is improved.
In order to facilitate the constructors to enter the foundation pit 2 under construction for construction, in the step c, the construction ground 1 around the foundation pit 2 is provided with a motorized movement hanging basket 14 for moving the constructors, and during construction, the constructors are conveyed to a construction point by using the motorized movement hanging basket 14, so that the constructors do not need to enter the foundation pit 2 under construction by climbing a scaffold, and the construction efficiency is improved.
In conclusion, the foundation pit 2 is sequentially divided into n layers of pit bodies 4 from top to bottom according to design requirements, when the foundation pit 2 is dug, the construction of the foundation pit 2 is sequentially carried out from top to bottom, the construction of the foundation pit 2 is carried out from top to bottom, corresponding supports are arranged during the construction of each layer of pit body 4, the safety of each layer of construction is ensured, the safety of the construction of the foundation pit 2 is obviously improved, and the safety of the construction of the multi-layer basement structure of the municipal road is also obviously improved.
Claims (7)
1. The method for constructing the multi-layer basement structure of the municipal road is characterized by comprising the following steps of:
a. the method comprises the steps that the position of a foundation pit (2) is planned on a construction ground (1), a temporary road (3) is arranged on the construction ground (1), and the temporary road (3) is located on the periphery of the foundation pit (2);
b. the foundation pit (2) is sequentially divided into n layers of pit bodies (4) from top to bottom according to design requirements, the numerical value of n is the same as the number of the layers of the basement, the numerical value of n is a natural number, and the height of each layer of pit body (4) is the same as the height of the basement with the corresponding number of the layers;
c. the construction of the foundation pit (2) is carried out, the construction of the foundation pit (2) is carried out from top to bottom, namely after the construction of the upper layer of pit body (4) is finished, the construction of the lower layer of pit body (4) is carried out until the construction of the bottom layer of pit body (4) is finished;
in the step c, the construction of each layer of pit body (4) comprises the following specific steps: firstly, paving a basement top concrete frame beam (10) on the surface of the earthwork of the corresponding pit body (4), and dividing the surface of the earthwork of the corresponding pit body (4) into a plurality of local areas (11) from left to right or from right to left according to the basement top concrete frame beam (10); then, carrying out excavation work on a local area (11) positioned at the edge of the pit body (4), after the excavation work of the local area (11) at the edge of the pit body (4) is finished, reinforcing the peripheral side walls (12) of the excavated local area (11) by spraying concrete, and meanwhile, arranging a plurality of temporary supporting devices (13) in the excavated local area (11), wherein the temporary supporting devices (13) support the concrete frame beam (10) at the top of the basement; and finally, sequentially completing the excavation work of other local areas (11) until the construction of the layer of pit body (4) is completed.
2. The method for constructing the multi-layer basement structure of the municipal road according to claim 1, wherein the method comprises the following steps: in the step a, after the temporary road (3) is arranged, a water retaining fence structure (5) is arranged on the construction ground (1) between the foundation pit (2) and the temporary road (3), and the water retaining fence structure (5) is located around the foundation pit (2).
3. The method for constructing the multi-layer basement structure of the municipal road according to claim 2, wherein the method comprises the following steps: the water retaining fence structure (5) comprises water retaining plates (6), mounting upright posts (7) are arranged on two sides of each water retaining plate (6), the water retaining plates (6) are embedded into the construction ground (1) by 50mm at least, and the mounting upright posts (7) are embedded into the construction ground (1) by 500mm at least.
4. The method for constructing the multi-layer basement structure of the municipal road according to claim 3, wherein the method comprises the following steps: the water retaining fence structure (5) further comprises grid fences (8), and the grid fences (8) are connected and arranged between the mounting upright posts (7) through connecting bolts (9).
5. The method for constructing the multi-layer basement structure of the municipal road according to claim 1, wherein the method comprises the following steps: in the step c, a motorized moving hanging basket (14) for moving constructors is arranged on the construction ground (1) at the periphery of the foundation pit (2).
6. The method for constructing the multi-layer basement structure of the municipal road according to claim 1, wherein the method comprises the following steps: a lifting platform (16) used for the soil loading dump truck (15) to move up and down is arranged on the construction ground (1) around the foundation pit (2).
7. The method for constructing the multi-layer basement structure of the municipal road according to claim 1, wherein the method comprises the following steps: in the step c, after the construction of the bottom layer of pit body (4) is completed, a reinforced concrete permanent support column (17) is connected and arranged below the concrete frame beam (10) at the top of each layer of basement.
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| CN201911165016.7A CN110965586B (en) | 2019-11-25 | 2019-11-25 | Construction method of multi-layer basement structure of municipal road |
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| CN201911165016.7A CN110965586B (en) | 2019-11-25 | 2019-11-25 | Construction method of multi-layer basement structure of municipal road |
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| CN110965586B true CN110965586B (en) | 2021-06-29 |
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Citations (6)
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| CN102477744A (en) * | 2010-11-23 | 2012-05-30 | 中国二十冶集团有限公司 | Pit excavation method in large-area pit with internal support under condition of soft soil foundation |
| CN103821149A (en) * | 2014-02-28 | 2014-05-28 | 中天建设集团有限公司 | Large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method |
| CN103938634A (en) * | 2014-03-22 | 2014-07-23 | 王继远 | Deep foundation pit supporting structure and construction method |
| CN104372799A (en) * | 2014-11-26 | 2015-02-25 | 江苏鸿基科技有限公司 | Rigid unearthing platform foundation pit inner support structure and construction method |
| CN104404967A (en) * | 2014-11-26 | 2015-03-11 | 南京东大鸿基新技术发展有限公司 | Rigid frame foundation pit support structure and construction method |
| CN208088970U (en) * | 2018-03-26 | 2018-11-13 | 四川省场道工程有限公司 | A kind of foundation pit edge protection fence |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101902786B1 (en) * | 2017-03-29 | 2018-10-01 | 유병훈 | Under ground structure construction method using composite sheet pile and under ground structure therewith |
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- 2019-11-25 CN CN201911165016.7A patent/CN110965586B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477744A (en) * | 2010-11-23 | 2012-05-30 | 中国二十冶集团有限公司 | Pit excavation method in large-area pit with internal support under condition of soft soil foundation |
| CN103821149A (en) * | 2014-02-28 | 2014-05-28 | 中天建设集团有限公司 | Large-scale deep foundation pit slope remaining soil digging and pit-in-pit concrete post casting construction method |
| CN103938634A (en) * | 2014-03-22 | 2014-07-23 | 王继远 | Deep foundation pit supporting structure and construction method |
| CN104372799A (en) * | 2014-11-26 | 2015-02-25 | 江苏鸿基科技有限公司 | Rigid unearthing platform foundation pit inner support structure and construction method |
| CN104404967A (en) * | 2014-11-26 | 2015-03-11 | 南京东大鸿基新技术发展有限公司 | Rigid frame foundation pit support structure and construction method |
| CN208088970U (en) * | 2018-03-26 | 2018-11-13 | 四川省场道工程有限公司 | A kind of foundation pit edge protection fence |
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