CN110735397A - Construction method of large bearing platform on inclined river bed surface - Google Patents
Construction method of large bearing platform on inclined river bed surface Download PDFInfo
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- CN110735397A CN110735397A CN201910858808.6A CN201910858808A CN110735397A CN 110735397 A CN110735397 A CN 110735397A CN 201910858808 A CN201910858808 A CN 201910858808A CN 110735397 A CN110735397 A CN 110735397A
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- 238000010276 construction Methods 0.000 title claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 49
- 239000010959 steel Substances 0.000 claims abstract description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 17
- 239000002689 soil Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims abstract description 10
- 238000009412 basement excavation Methods 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 14
- 238000009411 base construction Methods 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 238000007599 discharging Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Foundations (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention discloses a construction method of large bearing platforms on a sloping river bed surface, which comprises the steps of driving steel pipe piles outside a cofferdam, discharging soil pressure, leveling the river bed surface roughly, driving a steel plate pile cofferdam, leveling the river bed surface for the second time, pouring back cover concrete, pumping water, installing ring beam inner supports, constructing the bearing platforms, balancing partial soil pressure through steel pipe pile soil retaining, leveling the river bed surface after the steel plate pile cofferdam is formed, reducing the engineering quantity of large-area filling, excavation and river bed leveling, ensuring safe construction and reliable quality, avoiding the processing and installation of large steel structures, saving construction period and cost, and providing experience for similar engineering construction.
Description
Technical Field
The invention relates to road and bridge engineering, in particular to a construction method of a large bearing platform on kinds of inclined river bed surfaces.
Background
In the road and bridge construction, the bearing platform construction needs to be carried out on the inclined river bed surface, and the construction is difficult and dangerous due to the poor geological stability of the inclined river bed surface.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide construction methods for large bearing platforms on the surface of an oblique river bed.
The technical scheme adopted by the invention for solving the technical problems is as follows: the construction method of the large bearing platform on the inclined river bed surface comprises the following steps:
s1, preparation before construction, namely, retesting a measurement control network provided by design according to the requirements of design files before the construction of a bearing platform, and compiling a measurement construction scheme;
s2, after the pile foundation construction is finished, removing the pile foundation drilling area platform, and keeping the pile foundation construction auxiliary platform as an auxiliary platform for subsequent pile cap construction;
s3, constructing the retaining wall of the steel pipe pile on the side close to the shore;
s4, building an excavation platform on the constructed pile foundation, excavating and filling the original river bed surface within the cofferdam range of the bearing platform, excavating according to a natural slope during construction, reducing the elevation of the soil surface of the area, leveling the ground during filling, and taking the soil body of the cofferdam base as a bearing layer to support the dead weight and other construction loads of the bottom sealing concrete and the bearing platform concrete;
s5, after the excavation platform is dismantled, an th layer of wailing installation is carried out at a low water level, and the wailing installation is also used as a guide beam for piling steel sheet piles;
s6, after wails at the th layer are installed, steel sheet piles are driven by using wails at the th layer as a guide, and the steel sheet piles are driven by a vibration hammer which is used for lifting and hoisting a hoisting device and is placed on a pile foundation auxiliary platform;
s7, after the steel sheet pile is driven, wails are fixed on the steel sheet pile through corbels;
s8, after the support conversion of wails is completed, the installation construction of an inner support can be carried out;
s9, excavating and filling in the cofferdam to finish secondary leveling;
s10, mounting an th layer inner support, mounting a bearing platform for constructing an upper channel and a lower channel, and building an underwater bottom sealing concrete pouring platform;
s11, pouring underwater bottom sealing concrete;
s12, pumping water to the mounting height of the inner support of the second layer after equal strength, and mounting the inner support of the second layer;
s13, draining water in the cofferdam, and pouring a residual bottom sealing concrete layer;
s14, cutting off a pile foundation pile casing and cleaning a pile head;
s15, constructing reinforced concrete of the bearing platform;
s16, removing wails, steel sheet piles and steel pipe pile retaining walls on the side close to the bank.
In S16, after the construction of a second-layer bearing platform is completed, a bearing platform template is detached, steel bars are welded from the side face of the bearing platform to support wails, then wails , inner stays and corresponding supporting brackets are detached, unbalanced water pressure borne by steel sheet piles is converted into water borne by wails, then water is retained by the steel sheet piles, tower base construction is carried out, after the tower base construction is completed, water is poured into the cofferdam to balance the inner and outer water surfaces during a low water level period, wails are detached, then the steel sheet piles and steel pipe pile retaining walls are pulled out, and the whole construction is completed.
The invention has the beneficial effects that: the large-area low-filling and high-digging of the riverbed can be avoided, the sealing bottom concrete is saved by adopting the dry sealing bottom by 800m3, the steel sleeve box is eliminated, the underwater operation time is reduced, the construction is organized by using the turnover materials such as the steel pipe piles, the steel sheet piles, the section steel and the like, the steel material can be saved by 400t, the construction period is shortened by 10d, and the benefit is increased by 400 ten thousand; to oblique riverbed face, adopt steel sheet pile cofferdam + steel-pipe pile to keep off the construction thinking that combines together, rationally born the soil pressure and the unbalanced soil pressure of high earthwork, guarantee construction safety, make the high work of digging low fill-up on the riverbed face of sloping simultaneously become the land construction by the construction under water, reduced riverbed flattening engineering volume, the engineering progress has been accelerated in the use of flexible arm grab bucket, construction quality has been guaranteed, provide valuable experience for similar engineering construction.
Drawings
FIG. 1 is a flowchart illustrating the overall steps of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1, the construction method of the large bearing platform on the inclined river bed surface comprises the following steps:
s1, preparation before construction: before the construction of the bearing platform, retesting a measurement control network provided by design according to the requirements of design files according to the construction requirements, and compiling a measurement construction scheme;
s2, after the pile foundation construction is finished, removing the pile foundation drilling area platform, and keeping the pile foundation construction auxiliary platform as an auxiliary platform for subsequent pile cap construction;
s3, steel pipe pile retaining wall construction is carried out to the side close to the bank: inserting and beating by using a steel protective pipe;
s4, building an excavation platform on the constructed pile foundation, excavating and filling the original river bed surface within the range of the bearing platform cofferdam, and performing high excavation and low filling on the original river bed surface of the cofferdam; during construction, excavating according to a natural slope, reducing the elevation of the soil surface of the area, leveling the ground during filling, taking the foundation soil body of the cofferdam as a bearing layer to support the dead weight of the bottom sealing concrete and the bearing platform concrete and other construction loads, reducing the elevation of the original soil surface to the elevation below +4.0m through the natural slope excavation in the area with the highest elevation of about +7.0m, and excavating the rest parts to the water surface in the construction period by using a hook machine;
s5, after the excavation platform is dismantled, an th layer of wailing installation is carried out at a low water level, and the wailing installation is also used as a guide beam for piling steel sheet piles;
s6, after wails at the th layer are installed, steel sheet piles are driven by using wails at the th layer as a guide, and the steel sheet piles are driven by a vibration hammer which is used for lifting and hoisting a hoisting device and is placed on a pile foundation auxiliary platform;
s7, after the steel sheet pile is driven, wails are fixed on the steel sheet pile through corbels (beam supports);
s8, after the support conversion of wails is completed, the installation construction of an inner support can be carried out;
s9, excavating and filling in the cofferdam to finish secondary leveling;
s10, after the requirements are met, mounting an th layer of inner support, mounting a bearing platform for constructing an upper channel and a lower channel, and building an underwater bottom sealing concrete pouring platform;
s11, pouring underwater bottom sealing concrete;
s12, pumping water to the mounting height of the inner support of the second layer after equal strength, and mounting the inner support of the second layer;
s13, draining water in the cofferdam, and pouring a residual bottom sealing concrete layer;
s14, cutting off a pile foundation pile casing and cleaning a pile head;
s15, constructing reinforced concrete of the bearing platform;
s16, after the construction of a second-layer bearing platform is completed, a bearing platform template is detached, steel bars are welded from the side face of the bearing platform to support wails, then wails , internal stays and corresponding supporting brackets are detached, unbalanced water pressure borne by steel sheet piles is converted into being borne by wails, then water is retained by the steel sheet piles, tower base construction is conducted, after the tower base construction is completed, water is filled in a cofferdam to balance the inner water surface and the outer water surface in a low water level period, wails are detached, and then the steel sheet piles and a steel pipe pile retaining wall are removed, so that the whole construction is completed.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made in the claims and the description of the present invention are within the scope of the present invention.
Claims (3)
1. The construction method of the large bearing platform on the inclined river bed surface is characterized by comprising the following steps:
s1, preparing before construction, and compiling a measurement construction scheme;
s2, after the pile foundation construction is finished, removing the pile foundation drilling area platform, and keeping the pile foundation construction auxiliary platform as an auxiliary platform for subsequent pile cap construction;
s3, constructing the retaining wall of the steel pipe pile on the side close to the shore;
s4, building an excavation platform on the constructed pile foundation, excavating and filling the original river bed surface within the range of the bearing platform cofferdam, and taking the foundation soil body of the cofferdam as a bearing layer to support the dead weight of the bottom sealing concrete and the bearing platform concrete and other construction loads;
s5, after the excavation platform is dismantled, an th layer of wailing installation is carried out, and the wailing installation is also used as a guide beam for driving a steel sheet pile;
s6, after wails at the th layer are installed, steel sheet piles are driven by using wails at the th layer as a guide, and the steel sheet piles are driven by a vibration hammer which is used for lifting and hoisting a hoisting device and is placed on a pile foundation auxiliary platform;
s7, after the steel sheet pile is driven, wails are fixed on the steel sheet pile through corbels;
s8, after the support conversion of wails is completed, the installation construction of an inner support can be carried out;
s9, excavating and filling in the cofferdam to finish secondary leveling;
s10, mounting an th layer inner support, mounting a bearing platform for constructing an upper channel and a lower channel, and building an underwater bottom sealing concrete pouring platform;
s11, pouring underwater bottom sealing concrete;
s12, pumping water to the mounting height of the inner support of the second layer after equal strength, and mounting the inner support of the second layer;
s13, draining water in the cofferdam, and pouring a residual bottom sealing concrete layer;
s14, cutting off a pile foundation pile casing and cleaning a pile head;
s15, constructing th layer bearing platform reinforced concrete;
s16, removing wails, steel sheet piles and steel pipe pile retaining walls on the side close to the bank.
2. The construction method of the large bearing platform on the inclined river bed surface according to claim 1, which is characterized by comprising the following steps: and in the step S4, during construction, excavating according to a natural slope, and reducing the elevation of the soil surface of the area.
3. The construction method of the large bearing platform on the slope river bed surface according to claim 1, characterized by comprising the following steps of removing a bearing platform template after the construction of a second-layer bearing platform is completed in the step S16, welding profile steel from the side surface of the bearing platform to support a second wailing, removing a second wailing , an internal stay and corresponding support corbels, converting unbalanced water pressure borne by a steel plate pile into the force borne by the second wailing, blocking water by the steel plate pile, performing tower base construction, filling water in a cofferdam until the inner water surface and the outer water surface are balanced after the tower base construction is completed, removing the second wailing, and removing the steel plate pile and a steel pipe pile retaining wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910858808.6A CN110735397A (en) | 2019-09-11 | 2019-09-11 | Construction method of large bearing platform on inclined river bed surface |
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| CN201910858808.6A CN110735397A (en) | 2019-09-11 | 2019-09-11 | Construction method of large bearing platform on inclined river bed surface |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411600A (en) * | 2020-12-11 | 2021-02-26 | 保利长大工程有限公司 | Combined pile foundation structure of full-support-structure branch pile and boulder treatment process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205077A (en) * | 2006-02-03 | 2007-08-16 | Shimizu Corp | Temporary coffering method |
| CN101736720A (en) * | 2009-12-01 | 2010-06-16 | 中国第一冶金建设有限责任公司 | Bottom sealing method for intestinal bag concrete, plastic clay and conventional concrete in steel cofferdam |
| CN102121251A (en) * | 2011-01-30 | 2011-07-13 | 中铁八局集团第一工程有限公司 | Construction method for pouring main tower pier foundation of bridge on deep-water oblique river bed |
| CN102409688A (en) * | 2011-08-16 | 2012-04-11 | 中建三局建设工程股份有限公司 | Construction method of steel plate pile cofferdam |
| CN107642101A (en) * | 2017-09-27 | 2018-01-30 | 中铁二十局集团第工程有限公司 | A kind of rocky bed steel cofferdam back cover leak stopping and guarded drainage construction method |
-
2019
- 2019-09-11 CN CN201910858808.6A patent/CN110735397A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007205077A (en) * | 2006-02-03 | 2007-08-16 | Shimizu Corp | Temporary coffering method |
| CN101736720A (en) * | 2009-12-01 | 2010-06-16 | 中国第一冶金建设有限责任公司 | Bottom sealing method for intestinal bag concrete, plastic clay and conventional concrete in steel cofferdam |
| CN102121251A (en) * | 2011-01-30 | 2011-07-13 | 中铁八局集团第一工程有限公司 | Construction method for pouring main tower pier foundation of bridge on deep-water oblique river bed |
| CN102409688A (en) * | 2011-08-16 | 2012-04-11 | 中建三局建设工程股份有限公司 | Construction method of steel plate pile cofferdam |
| CN107642101A (en) * | 2017-09-27 | 2018-01-30 | 中铁二十局集团第工程有限公司 | A kind of rocky bed steel cofferdam back cover leak stopping and guarded drainage construction method |
Non-Patent Citations (3)
| Title |
|---|
| 侯文飞: "钢板桩围堰施工质量控制", 《民营科技》 * |
| 胡振伟: "斜河床面上大型承台的一种施工方法", 《城市道桥与防洪》 * |
| 赵祥允等: "拉森Ⅳ型钢板桩围堰技术在高速铁路施工中的应用", 《水运工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112411600A (en) * | 2020-12-11 | 2021-02-26 | 保利长大工程有限公司 | Combined pile foundation structure of full-support-structure branch pile and boulder treatment process |
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Application publication date: 20200131 |
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