CN109083122B - Construction method of construction operation platform in deep peat soil region - Google Patents
Construction method of construction operation platform in deep peat soil region Download PDFInfo
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- CN109083122B CN109083122B CN201811010277.7A CN201811010277A CN109083122B CN 109083122 B CN109083122 B CN 109083122B CN 201811010277 A CN201811010277 A CN 201811010277A CN 109083122 B CN109083122 B CN 109083122B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C3/00—Foundations for pavings
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
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- Life Sciences & Earth Sciences (AREA)
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- Mining & Mineral Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention provides a construction method of a construction operation platform in a deep peat soil area, which comprises the following steps: d: excavating a road base groove within the range of a machine arm of the excavator; e: laying geotextile at the bottom of the roadbed trench; f: backfilling sea sand into the roadbed trench to form a primary platform; g: moving the excavator to the primary platform obtained in the previous step; h: repeating the steps D-G until all primary platforms in the construction area are completed; and H, backfilling sea sand above the primary platform and compacting after the primary platform with the first specific distance length is finished to form a construction operation platform. The construction method provided by the invention fully utilizes the water permeability and the reinforcement of the sea sand resource and the geotextile, enhances the bearing capacity of the foundation, ensures that construction equipment normally enters and exits and operates, avoids the construction error of the mechanical equipment caused by uneven settlement, and provides reliable guarantee for the construction of subsequent foundation treatment.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a construction operation platform in a deep peat soil region.
Background
In order to reduce the damage to land resources and the removal work, the majority of highway lines are selected from marshland, lake-drainage areas and areas with few buildings. The large-scale construction machinery can not enter the field and influence the construction operation of foundation treatment because the large-scale construction machinery cannot enter the field and the construction operation platform must be built before the foundation treatment, so that the large-scale construction machinery can enter and leave the field and can normally operate and operate.
To solve this problem, a construction operation platform is required to be established to ensure that the construction machine can enter and exit and normally run.
Disclosure of Invention
The invention aims to provide a construction method of a construction operation platform in a deep peat soil area, which is used for establishing the construction operation platform and ensuring that construction machinery can enter and exit and normally run.
The invention provides a construction method of a construction operation platform in a deep peat soil area, which comprises the following steps:
a: searching a hard foundation in a deep peat soil area, wherein the hard foundation can bear the weight of the excavator;
b: defining a construction area of a construction operation platform between the hard foundation and a construction point;
c: moving the excavator onto the hard foundation;
d: excavating a roadbed trench along the path of the construction area within the range of the boom of the excavator;
e: laying geotextile at the bottom of the roadbed trench;
f: backfilling sea sand into the roadbed trench to form a primary platform, wherein the primary platform can bear the weight of the excavator;
g: moving the excavator to the primary platform obtained in the previous step;
h: repeating the steps D-G until all primary platforms in the construction area are completed;
and H, backfilling sea sand above the primary platform and compacting after the primary platform with the first specific distance length is finished to form a construction operation platform.
Further, the first specific distance is 40-60 m.
Further, the method also comprises the following steps:
i: monitoring the elevation of the construction operation platform, and backfilling sea sand and compacting when the elevation is lower than the control elevation by a second specific distance until the elevation of the operation platform reaches the control elevation;
j: and (5) repeating the step I until the project is finished.
Further, the second specific distance is 20 cm.
Further, the step J further comprises the following steps:
k: and after the project is finished, excavating the construction operation platform, and recovering the original landform of the deep peat soil region.
Further, the following steps are also included between the steps B and C:
and S1, arranging a plurality of control piles along the path of the construction area, wherein the control piles are distributed on two sides of the construction area.
Further, in step S1, the distance between two adjacent control piles is a third specific distance along the path direction of the construction area.
In step S1, if the path of the construction area is a straight line segment, the third specific distance is 20m, and if the path of the construction area is a curved line segment, the third specific distance is 10 m.
Further, in the step H, after the primary platform with the first specific distance length is finished, sea sand is backfilled and compacted on the primary platform for multiple times until the elevation is controlled, and a construction operation platform is formed.
The construction method of the construction operation platform in the deep peat soil area provided by the invention fully utilizes the water permeability and the reinforcement of sea sand resources and geotextiles, enhances the bearing capacity of the foundation, ensures that construction equipment normally enters and exits and operates, avoids construction errors of mechanical equipment caused by uneven settlement, and provides reliable guarantee for the construction of subsequent foundation treatment.
Drawings
FIG. 1 is a schematic structural view of the construction state of the present invention;
fig. 2 is a sectional view a-a in fig. 1.
In the figure, 1, a deep peat soil area, 2, a roadbed trench, 3, geotextile, 4, sea sand, 5, an excavator and 6, a control pile.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
A construction method of a construction operation platform in a deep peat soil area refers to figures 1 and 2, and comprises the following steps:
a: a hard foundation is sought in the deep peat soil area 1, which can bear the weight of the excavator 5. In the deep peat soil region 1, the soil is soft, and one land needs to be found as a starting point of operation.
B: a construction area of a construction operation platform is defined between the hard foundation and a construction point, wherein the construction point is an engineering construction site, such as a pile foundation construction point of a bridge.
And S1, arranging a plurality of control piles 6 along the path of the construction area, wherein the control piles 6 are distributed on two sides of the construction area, and the distance between two adjacent control piles 6 is a third specific distance along the path direction of the construction area, if the path of the construction area is a straight line section, the third specific distance is 20m, and if the path of the construction area is a curve section, the third specific distance is 10 m.
C: moving the excavator 5 onto the hard foundation.
D: within the range of the arm of the excavator 5, the distance is usually 3-4 m, and the roadbed trench 2 is excavated along the path of the construction area, namely the soil layer, the big trees, the tree roots, the weeds and the like on the surface of the deep peat soil area 1 are removed.
E: and the bottom of the roadbed groove 2 is paved with geotextile 3, a layer of geotextile 3 can be additionally paved on the marshland section, and after one excavation operation section is finished, the geotextile 3 is paved along the full section of the operation section.
F: backfilling the subgrade groove 2 with sea sand forms a primary platform that can bear the weight of the excavator 5, where the primary platform is simply to facilitate the excavator 5 to continue moving along the path of the construction area, so the amount of backfilled sea sand in this step is not significant.
G: moving the excavator 5 to the primary platform obtained in the previous step;
h: repeating the steps D-G until all primary platforms in the construction area are completed;
and H, backfilling sea sand above the primary platform and compacting after the primary platform with the first specific distance length is finished to form a construction operation platform. The first specific distance is 40-60 m, and preferably, the first specific distance is 50 mm.
Specifically, the excavator 5 excavates the roadbed trench 2 at the front and forms a primary platform for the excavator 5 to go forward continuously, backfill work is synchronously carried out at the rear while the excavator 5 works, the backfill work adopts sea sand 4, and after the primary platform is formed to a certain length, the sea sand 4 backfilled above the primary platform is compacted to form a construction operation platform, wherein the distance between the backfilled sea sand 4 and the construction operation platform is 50 m. In the forming process of the construction operation platform, backfilling and compaction can be carried out for multiple times until the backfilling and compaction reach a control elevation, so that mechanical equipment for foundation treatment can normally enter and exit and operate. The control elevation is standard which is higher than the water level of the existing marsh area or 50cm above the original ground elevation (if necessary, the filling height of the construction operation platform can be adjusted according to the actual situation to ensure the normal operation of the machine), and marks are made on the control piles 6.
I: and monitoring the elevation of the construction operation platform, when the elevation is lower than the control elevation by a second specific distance which can be 20cm, backfilling sea sand and compacting until the elevation of the operation platform reaches the control elevation.
J: and (5) repeating the step I until the project is finished.
K: after the project is finished, the construction operation platform is excavated, and the original landform of the deep peat soil region 1 is recovered, so that the original functions of flood discharge and water storage are not influenced.
The scope of the invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (9)
1. A construction method of a construction operation platform in a deep peat soil area is characterized by comprising the following steps:
a: searching a hard foundation in a deep peat soil area, wherein the hard foundation can bear the weight of the excavator;
b: defining a construction area of a construction operation platform between the hard foundation and a construction point;
c: moving the excavator onto the hard foundation;
d: excavating a roadbed trench along the path of the construction area within the range of the boom of the excavator;
e: laying geotextile at the bottom of the roadbed trench;
f: backfilling sea sand into the roadbed trench to form a primary platform, wherein the primary platform can bear the weight of the excavator;
g: moving the excavator to the primary platform obtained in the previous step;
h: repeating the steps D-G until all primary platforms in the construction area are completed;
and H, backfilling sea sand above the primary platform and compacting after the primary platform with the first specific distance length is finished to form a construction operation platform.
2. The construction method of the operating platform for construction in the deep peat soil area according to claim 1, wherein the first specific distance is 40-60 m.
3. The construction method of the operating platform for construction in the deep peat soil area according to claim 1, further comprising the steps of:
i: monitoring the elevation of the construction operation platform, and backfilling sea sand and compacting when the elevation is lower than the control elevation by a second specific distance until the elevation of the operation platform reaches the control elevation;
j: and (5) repeating the step I until the project is finished.
4. The construction method of the operating platform for construction in the deep peat soil area according to claim 3, wherein the second specific distance is 20 cm.
5. The construction method of the operating platform for construction in the deep peat soil region according to claim 3, wherein the step J is followed by the following steps:
k: and after the project is finished, excavating the construction operation platform, and recovering the original landform of the deep peat soil region.
6. The construction method of the operating platform for construction in the deep peat soil region according to claim 1, wherein the following steps are further included between the steps B and C:
and S1, arranging a plurality of control piles along the path of the construction area, wherein the control piles are distributed on two sides of the construction area.
7. The method according to claim 6, wherein in step S1, the distance between two adjacent control piles is a third specific distance along the path of the construction area.
8. The method of claim 7, wherein in step S1, if the path of the construction area is a straight line segment, the third specific distance is 20m, and if the path of the construction area is a curved line segment, the third specific distance is 10 m.
9. The construction method of the operating platform for construction in the deep peat soil area according to claim 1, wherein in the step H, after each primary platform with a first specific distance length is completed, sea sand is backfilled and compacted above the primary platform for a plurality of times until a control elevation is reached, so as to form the operating platform for construction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811010277.7A CN109083122B (en) | 2018-08-31 | 2018-08-31 | Construction method of construction operation platform in deep peat soil region |
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| CN201811010277.7A CN109083122B (en) | 2018-08-31 | 2018-08-31 | Construction method of construction operation platform in deep peat soil region |
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| CN109083122A CN109083122A (en) | 2018-12-25 |
| CN109083122B true CN109083122B (en) | 2020-03-27 |
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| CN109930608A (en) * | 2019-03-05 | 2019-06-25 | 云南建投第十二建设有限公司 | A kind of pit earthwork excavation method of peat matter weak soil |
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| CN103161109A (en) * | 2011-12-13 | 2013-06-19 | 中国二十冶集团有限公司 | Method for subgrade filling of peat soil subgrade by sea sand |
| CN104775415B (en) * | 2015-04-03 | 2016-06-15 | 重庆大学 | Blow and fill out workplatform and the constructional method that super soft ground is reinforced fast |
| CN106836175B (en) * | 2017-03-28 | 2019-01-22 | 罗淮东 | A kind of construction method suitable for cluster well platform during rainy season |
| CN107675693A (en) * | 2017-09-27 | 2018-02-09 | 中国二十冶集团有限公司 | The soft base comprehensive processing method of road peat soil |
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