CN113309078B - Construction method of bored pile forming system - Google Patents
Construction method of bored pile forming system Download PDFInfo
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- CN113309078B CN113309078B CN202110531955.XA CN202110531955A CN113309078B CN 113309078 B CN113309078 B CN 113309078B CN 202110531955 A CN202110531955 A CN 202110531955A CN 113309078 B CN113309078 B CN 113309078B
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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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
- E02D17/18—Making embankments, e.g. dikes, dams
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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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
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/16—Foundations formed of separate piles
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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
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
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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
- E02D27/32—Foundations for special purposes
- E02D27/52—Submerged foundations, i.e. submerged in open water
- E02D27/525—Submerged foundations, i.e. submerged in open water using elements penetrating the underwater ground
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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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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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
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0085—Geotextiles
Abstract
The invention relates to a construction method of a cast-in-situ bored pile forming system, which comprises the steps of surveying and measuring, constructing a sack-steel sheet pile cofferdam structure, hoisting a drilling platform, and finally manufacturing and installing a guide rest to complete the construction of the cast-in-situ bored pile forming system. The beneficial effects of the invention are: according to the sack-steel sheet pile cofferdam structure, the stirring pile group arranged at the bottom effectively bears the upper load, the clay sacks and the sandy soil sacks are low in material cost, the cofferdam is high in forming speed and not easy to pollute the surrounding environment, and the technical benefit advantage is obvious; the hoisting drilling platform is reasonable in structure, rapid to install and reasonable in partition, and construction efficiency is effectively improved; the guide placement frame integrates the pile casing guide frame, the reinforcement cage placement frame and the conduit (for concrete pouring) placement frame, has a reasonable structure and high utilization rate, and reduces the construction cost and the construction period.
Description
Technical Field
The invention relates to the technical field of pile foundation construction, in particular to a construction method of a pile-forming system of a cast-in-situ bored pile.
Background
In recent years, with the continuous development of bridge construction, the application of the pile foundation in the bridge is more and more extensive, and due to the change of geological conditions, the situation that the pile foundation needs to be constructed in water is more and more common. However, the construction of the pile foundation in water is more or less different from the construction method on land, and common methods for constructing the pile foundation in water include a pneumatic caisson method, a cofferdam construction pile foundation and a steel pipe pile construction pile foundation. However, in modern bridge construction, the cofferdam construction pile foundation and the steel pipe pile foundation are frequently applied.
In modern bridge construction, through the construction scheme of cofferdam building island, become the aquatic construction condition into land construction, optimized aquatic pile foundation construction technology to effectively solved aquatic pile foundation construction environment poor, the degree of difficulty scheduling problem. However, in the prior art, the problems of huge earthwork amount and easy damage to surrounding and water area environments during the conventional temporary earth and stone road building and island cofferdam building construction still exist, and the technical problems of construction hole collapse, long construction period, high island building cost and the like are caused by the adoption of cofferdam building of the island.
Therefore, at present, a construction method of a pile-forming system of a cast-in-situ bored pile, which has a safe and stable structure, fast positioning of a steel reinforcement cage, high precision, high construction efficiency, economy and environmental protection, is urgently needed to be found.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a construction method of a cast-in-situ bored pile forming system.
The cast-in-situ bored pile forming system comprises a sack-steel sheet pile cofferdam structure arranged on a riverbed, a hoisting drilling platform arranged above the sack-steel sheet pile cofferdam structure and a guide shelf arranged above the hoisting drilling platform;
the gunny bag-steel sheet pile cofferdam structure comprises a clay gunny bag pile, a leveling layer, a steel sheet pile, an annular rib, a sand gunny bag pile and a stirring pile group, wherein the stirring pile group is arranged in a riverbed below the gunny bag-steel sheet pile cofferdam structure, the clay gunny bag pile is arranged above the stirring pile group, the sand gunny bag pile is arranged at the inner side of the clay gunny bag pile, the leveling layer is arranged above the sand gunny bag pile, and the steel sheet pile is arranged in a central area enclosed by the clay gunny bag pile and the sand gunny bag pile;
the hoisting drilling platform comprises a personnel flowing gallery, a base framework, an annular laying steel plate, a stacking steel plate, a hoisting device, a slurry circulating device and a drilling device, wherein the base framework is arranged on a leveling layer and is divided into five areas, namely a hoisting area, a material stacking area, a slurry circulating area, a drilling area and a laying area, all the areas are connected through the personnel flowing gallery, the hoisting device is arranged in the hoisting area on the base framework, the stacking steel plate is arranged in the material stacking area on the base framework, the slurry circulating device is arranged in the slurry circulating area on the base framework, the drilling device is arranged in the drilling area on the base framework, and the annular laying steel plate is arranged in the laying area on the base framework;
the guide placement frame comprises a support frame, horizontal hydraulic equipment, a top operation platform, a ladder and a penetrating bar system, wherein the support frame is located above the annular placement steel plate, the top of the support frame is provided with the top operation platform, the middle of the support frame is provided with the horizontal hydraulic equipment and the penetrating bar system, one side edge of the support frame is provided with the ladder, the penetrating bar system comprises a penetrating bar base, a penetrating bar and a hydraulic jack, the penetrating bar base is arranged below the penetrating bar, and the hydraulic jack is arranged below the penetrating bar base.
Preferably, the method comprises the following steps: the steel sheet pile forms annular steel sheet pile cofferdam, and the steel sheet pile cofferdam inboard sets up multichannel annular rib.
Preferably, the method comprises the following steps: the base framework is directly fixed with an annular steel plate, a stacked steel plate, a personnel flow gallery road, a hoisting device, a drilling device and a slurry circulating device.
Preferably, the method comprises the following steps: the middle part of the support frame is provided with double layers of horizontal hydraulic equipment, and each layer is provided with a plurality of horizontal hydraulic equipment.
Preferably, the method comprises the following steps: the middle part of the support frame is provided with a plurality of penetrating bars which are crossed in space; the penetrating bar penetrates through the reinforcement cage.
The construction method of the cast-in-situ bored pile forming system comprises the following steps:
1) Surveying and measuring: carrying out on-site investigation in advance, checking on-site hydrogeological conditions, selecting and preparing appropriate materials, carrying out measurement lofting according to engineering, and determining the position of the sack-steel sheet pile cofferdam structure;
2) Constructing the sack-steel sheet pile cofferdam structure: firstly, constructing a stirring pile group under a river bed in a construction area, then piling up a clay gunny bag pile and a sandy soil gunny bag pile above the river bed, wherein the sandy soil gunny bag pile is arranged at the inner side of the clay gunny bag pile, and is higher than the water surface by a certain height, then paving a sandy soil leveling layer above the sandy soil gunny bag pile, and then inserting and striking steel plate piles in the middle of an area enclosed by the clay gunny bag pile and the sandy soil gunny bag pile to form an annular steel plate pile cofferdam, wherein a plurality of annular ribs are arranged at the inner side of the steel plate pile cofferdam;
3) And (3) hoisting the drilling platform: firstly, mounting a base framework on a leveling layer, wherein the base framework is divided into five areas, namely a lifting area, a material stacking area, a slurry circulation area, a drilling area and a shelving area, the areas are connected by a personnel flow gallery, then hoisting equipment is bolted to the lifting area mounted on the base framework, stacking steel plates are bolted to the material stacking area mounted on the base framework, the slurry circulation equipment is bolted to the slurry circulation area mounted on the base framework, the drilling equipment is bolted to the drilling area mounted on the base framework, and annular shelving steel plates are bolted to the shelving area mounted on the base framework;
4) Manufacturing and installing the guide placement frame: on the annular laying steel plate at the periphery of the steel sheet pile cofferdam, steel is selected and welded to form a support frame, the bottom of the support frame is firmly bolted with the annular laying steel plate, then a ladder is welded and installed on the side edge of the support frame, a top operation platform is paved on the top of the support frame, and finally a horizontal hydraulic device and a penetrating bar system are installed in the middle of the support frame, so that the construction of the cast-in-situ bored pile forming system is completed.
The invention has the beneficial effects that:
1. compared with the prior art, the sack-steel sheet pile cofferdam structure adopted by the invention has the advantages that the stirring pile group arranged at the bottom effectively bears the upper load, the materials of the clay sack and the sandy soil sack are low, the cofferdam forming speed is high, the surrounding environment is not easily polluted, and the technical benefit advantage is obvious.
2. The hoisting drilling platform is reasonable in structure, rapid to install and reasonable in partition, and construction efficiency is effectively improved.
3. The guide placement frame integrates the pile casing guide frame, the reinforcement cage placement frame and the conduit (for concrete pouring) placement frame, has a reasonable structure and high utilization rate, and reduces the construction cost and the construction period.
4. The penetrating bar system adopts multiple layers of penetrating bars, so that the supporting force is greatly enhanced, accurate positioning can be realized by matching with a vertical meter or an inclinometer, and the verticality of the reinforcement cage is adjusted.
Drawings
FIG. 1 is a schematic diagram of a cast-in-situ bored pile forming system;
FIG. 2 is a schematic diagram of a sack-steel sheet pile cofferdam structure;
FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 2;
FIG. 4 is a schematic view of a hoisted drilling platform;
FIG. 5 is a schematic view of a guide rest;
FIG. 6 is a structural elevation of the guide rest;
fig. 7 is a structural elevation view of the cross-bar architecture.
Description of reference numerals: 1-sack-steel sheet pile cofferdam structure; 2, hoisting the drilling platform; 3-a guide rest stand; 4-clay gunny bag pile; 5-leveling layer; 6-steel sheet pile; 7-annular rib; 8-riverbed; 9-water surface; 10-sandy soil gunny bag pile; 11-stirring pile group; 12-a hoisting zone; 13-material deposit area; 14-passenger flow stack; 15-base frame; 16-mud circulation zone; 17-drilling area; 18-a support frame; 19-horizontal hydraulic equipment; 20-bar base; 21-penetrating bar; 22-steel sheet pile cofferdam; 23-top work platform; 24-ladder; 25-bar penetrating system; 26-a reinforcement cage; 27-hydraulic jack; 28-parking area.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Example one
The cast-in-situ bored pile forming system comprises a sack-steel sheet pile cofferdam structure 1 arranged on a riverbed 8, a hoisting drilling platform 2 arranged above the sack-steel sheet pile cofferdam structure 1 and a guide shelf 3 arranged above the hoisting drilling platform 2.
The sack-steel sheet pile cofferdam structure 1 comprises a clay sack pile 4, a leveling layer 5, a steel sheet pile 6, an annular rib 7, a sandy soil sack pile 10 and a stirring pile group 11, wherein the stirring pile group 11 is arranged in a riverbed 8 below the cofferdam structure, the clay sack pile 4 is arranged above the stirring pile group 11, the sandy soil sack pile 10 is arranged on the inner side of the clay sack pile 4, the leveling layer 5 is arranged above the sandy soil sack pile 10, and the steel sheet pile 6 is arranged in a central area surrounded by the clay sack pile 4 and the sandy soil sack pile 10.
Hoist and mount drilling platform 2 including personnel flow plank road 14, base skeleton 15, annular shelve the steel sheet, stack the steel sheet, lift by crane equipment, mud circulation equipment and drilling equipment, base skeleton 15 sets up on screed-coat 5, and base skeleton 15 is gone up to divide into and lifts by crane five regions 12, material stack district 13, mud circulation district 16, drilling district 17 and shelve district 28, connects each region with personnel flow plank road 14, lift by crane equipment setting and lift by crane district 12 on base skeleton 15, stack material stack district 13 that the steel sheet set up on base skeleton 15, mud circulation equipment sets up mud circulation district 16 on base skeleton 15, drilling equipment sets up drilling district 17 on base skeleton 15, the annular shelve district 28 that the steel sheet setting was on base skeleton 15.
The guide placement frame 3 comprises a support frame 18, horizontal hydraulic equipment 19, a top operation platform 23, a ladder 24 and a penetrating bar system 25, the support frame 18 is located above an annular placement steel plate, the top of the support frame 18 is provided with the top operation platform 23, the middle of the support frame 18 is provided with the horizontal hydraulic equipment 19 and the penetrating bar system 25, one side edge of the support frame 18 is provided with the ladder 24, the penetrating bar system 25 comprises a penetrating bar base 20, a penetrating bar 21 and a hydraulic jack 27, the penetrating bar base 20 is arranged below the penetrating bar 21, and the hydraulic jack 27 is arranged below the penetrating bar base 20.
The steel sheet pile 6 forms an annular steel sheet pile cofferdam 22, and a plurality of annular ribs 7 are arranged on the inner side of the steel sheet pile cofferdam 22.
The base framework 15 can be directly fixed with annular steel plates, stacked steel plates, a personnel flow gallery road 14, hoisting equipment, drilling equipment and slurry circulating equipment.
The middle part of the support frame 18 is provided with double-layer horizontal hydraulic equipment 19, each layer is provided with 3 horizontal hydraulic equipment 19, and the verticality of the casing beating is ensured by matching with a level gauge.
Two or more through bars 21 are arranged in the middle of the supporting frame 18, and the space is in a cross shape; the through bar 21 passes through the reinforcement cage 26.
Example two
The construction method of the cast-in-situ bored pile forming system comprises the steps of surveying and measuring, constructing a sack-steel sheet pile cofferdam structure, constructing a hoisting drilling platform, and finally manufacturing and installing a guide placement frame to complete the construction of the cast-in-situ bored pile forming system. The method specifically comprises the following steps:
1) Surveying and measuring: carrying out on-site investigation in advance, checking on-site hydrogeological conditions, selecting and preparing appropriate materials, carrying out measurement lofting according to engineering, and determining the position of the sack-steel sheet pile cofferdam structure 1;
2) As shown in fig. 2 and 3, the gunny bag-steel sheet pile cofferdam structure 1 is constructed by: firstly, constructing a stirring pile group 11 under a riverbed 8 in a construction area, then stacking a clay gunny bag pile 4 and a sand gunny bag pile 10 above the riverbed 8, after the clay gunny bag pile 4 and the sand gunny bag pile 10 are higher than the water surface by a certain height, laying a sand leveling layer 5 above the sand gunny bag pile 10, then inserting and striking a steel sheet pile 6 in the middle of an area enclosed by the clay gunny bag pile 4 and the sand gunny bag pile 10 to form an annular steel sheet pile cofferdam 22, and installing a plurality of annular ribs 7 on the inner side of the steel sheet pile cofferdam 22;
3) As shown in fig. 4, construction of hoisting the drilling platform 2: firstly, a base framework 15 is installed on a leveling layer 5, the base framework 15 is divided into five areas, namely a lifting area 12, a material stacking area 13, a slurry circulation area 16, a drilling area 17 and a shelving area 28 according to design, a personnel flow trestle 14 is used for connecting the areas, then a lifting device is bolted to the lifting area 12 installed on the base framework 15, a stacking steel plate is bolted to the material stacking area 13 installed on the base framework 15, the slurry circulation device is bolted to the slurry circulation area 16 installed on the base framework 15, the drilling device is bolted to the drilling area 17 installed on the base framework 15, and an annular shelving steel plate is bolted to the shelving area 28 installed on the base framework 15;
4) As shown in fig. 1, 5, 6 and 7, the guide shelf 3 is manufactured and installed: on the annular laying steel plate at the periphery of the steel sheet pile cofferdam 22, firstly, steel is selected and welded to form a support frame 18, the bottom of the support frame 18 is firmly bolted with the annular laying steel plate, then, a ladder 24 is welded and installed on the side edge of the support frame 18, then, a top operation platform 23 is paved on the top of the support frame 18, and finally, horizontal hydraulic equipment 19 and a penetrating rod system 25 are installed in the middle of the support frame 18, so that the construction of the bored pile forming system is completed.
Claims (1)
1. A construction method of a pile-forming system of a cast-in-situ bored pile is characterized by comprising the following steps:
1) Surveying and measuring: carrying out site investigation in advance, checking the hydrogeological condition on site, selecting and preparing appropriate materials, carrying out measurement lofting according to the project, and determining the position of the sack-steel sheet pile cofferdam structure (1);
2) Constructing a sack-steel sheet pile cofferdam structure (1): firstly, constructing a stirring pile group (11) under a riverbed (8) in a construction area, then stacking a clay gunny bag pile (4) and a sand gunny bag pile (10) above the riverbed (8), wherein the sand gunny bag pile (10) is arranged at the inner side of the clay gunny bag pile (4), after the sand gunny bag pile (10) is higher than the water surface by a certain height, paving a sand leveling layer (5) above the sand gunny bag pile (10), then inserting steel sheet piles (6) in the middle of an area enclosed by the clay gunny bag pile (4) and the sand gunny bag pile (10) to form an annular steel sheet pile cofferdam (22), and installing a plurality of annular ribs (7) at the inner side of the steel sheet pile cofferdam (22);
3) And (3) hoisting the drilling platform (2): firstly, a base framework (15) is installed on a leveling layer (5), the base framework (15) is divided into five areas, namely a lifting area (12), a material stacking area (13), a slurry circulation area (16), a drilling area (17) and a resting area (28), a personnel flow gallery (14) is used for connecting the areas, then lifting equipment is bolted to the lifting area (12) installed on the base framework (15), a stacking steel plate is bolted to the material stacking area (13) installed on the base framework (15), the slurry circulation equipment is bolted to the slurry circulation area (16) installed on the base framework (15), the drilling equipment is bolted to the drilling area (17) installed on the base framework (15), and an annular resting steel plate is bolted to the resting area (28) installed on the base framework (15);
4) Manufacturing and installing the guide placement frame (3): on an annular laying steel plate at the periphery of a steel sheet pile cofferdam (22), firstly, steel is selected and welded to form a support frame (18), the bottom of the support frame (18) is firmly bolted with the annular laying steel plate, then, a ladder (24) is welded and installed on the side edge of the support frame (18), then, a top operation platform (23) is paved on the top of the support frame (18), and finally, horizontal hydraulic equipment (19) and a penetrating bar system (25) are installed in the middle of the support frame (18), so that the construction of the bored pile forming system is completed.
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| CN202110531955.XA CN113309078B (en) | 2021-05-17 | 2021-05-17 | Construction method of bored pile forming system |
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| CN202110531955.XA CN113309078B (en) | 2021-05-17 | 2021-05-17 | Construction method of bored pile forming system |
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| CN113309078B true CN113309078B (en) | 2023-03-31 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017210779A (en) * | 2016-05-24 | 2017-11-30 | 大成建設株式会社 | Construction method of substructural column and foundation |
| CN108755665A (en) * | 2018-05-31 | 2018-11-06 | 诚邦生态环境股份有限公司 | Enclose the integrated platform construction method of brill |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017210779A (en) * | 2016-05-24 | 2017-11-30 | 大成建設株式会社 | Construction method of substructural column and foundation |
| CN108755665A (en) * | 2018-05-31 | 2018-11-06 | 诚邦生态环境股份有限公司 | Enclose the integrated platform construction method of brill |
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