CN114703833A - Construction method for semi-circular piles for covering and digging station - Google Patents
Construction method for semi-circular piles for covering and digging station Download PDFInfo
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- CN114703833A CN114703833A CN202210459034.1A CN202210459034A CN114703833A CN 114703833 A CN114703833 A CN 114703833A CN 202210459034 A CN202210459034 A CN 202210459034A CN 114703833 A CN114703833 A CN 114703833A
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- 238000010276 construction Methods 0.000 title claims abstract description 74
- 230000002787 reinforcement Effects 0.000 claims abstract description 120
- 239000011425 bamboo Substances 0.000 claims abstract description 98
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 97
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 97
- 241001330002 Bambuseae Species 0.000 claims abstract description 97
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 97
- 239000011120 plywood Substances 0.000 claims abstract description 83
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 37
- 229910052742 iron Inorganic materials 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 14
- 125000006850 spacer group Chemical group 0.000 claims description 9
- 238000005553 drilling Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 abstract description 9
- 239000000463 material Substances 0.000 abstract description 4
- 210000003205 muscle Anatomy 0.000 description 42
- 238000013461 design Methods 0.000 description 13
- 238000005098 hot rolling Methods 0.000 description 10
- 238000003466 welding Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000012937 correction Methods 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
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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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/02—Retaining or protecting walls
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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
- E02D5/38—Concrete or concrete-like piles cast in position ; Apparatus for making same making by use of mould-pipes or other moulds
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Abstract
The invention discloses a construction method for semi-circular piles for covering and digging stations. The construction method of the semi-circular pile for covering and digging the station comprises the following steps: pile position lofting is carried out on the fender pile, and a positioning hole is formed in the ground according to the structure of the fender pile; preparing a reinforcement cage, wherein part of reinforcements in the reinforcement cage protrude along the radial direction to form a semicircular reinforcement cage with a circular arc-shaped outline; arranging a bamboo plywood, wherein the bamboo plywood is connected with the semicircular reinforcement cage; lowering the reinforcement cage to be inserted into the pile hole; pouring concrete into the reinforcement cage, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (5) removing the bamboo plywood to obtain the semicircular pile. In the whole construction process, only materials such as bamboo plywood and steel bars which are easy to purchase and low in price need to be input, so that the cost input is reduced, and the economy of the whole project is improved. Simultaneously, because the demolishment of bamboo offset plate is comparatively easy, the noise has greatly reduced simultaneously, accords with green construction requirement, solves the trouble and be difficult to the problem of assurance engineering quality of semicircular pile construction.
Description
Technical Field
The invention belongs to the technical field of building construction, and particularly relates to a construction method for semi-circular piles for covering and digging stations.
Background
The guard post for the cover-dug station comprises a semicircular pile and a circular pile, wherein the upper part of the guard post is designed into the semicircular pile.
At present in the work progress, pour into the circular with fender post whole earlier, then make its top through the mode of artifical abolishing form semicircle stake again. Then, when half-pile removal is performed in the foundation pit, the process is complicated, and the removal range is difficult to accurately control, so that the flatness of the base surface is difficult to control, meanwhile, the construction efficiency is low, and the overall construction cost is high. In addition, the position of a half-width reinforcement cage is easy to deviate in the cage descending process, namely, the axis of the fender post has a certain angle deviation relative to the gravity direction, so that the reinforcement cage enters a broken part, and the reinforcement of the pile body has to be cut, so that the processing procedures are increased, and the specification and the strength of the pile body cannot meet the construction quality requirements easily due to the cutting of the structure of the pile body. Therefore, it is also necessary to provide a more reasonable technical solution to solve the current technical problem.
Disclosure of Invention
The invention aims to provide a construction method for semi-circular piles for covering and digging stations, and aims to solve the problems that the semi-circular piles are troublesome to construct and the engineering quality is difficult to ensure in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a construction method for semi-circular piles for covering and digging stations, which comprises the following steps:
pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground according to the pile position to form a pile hole;
preparing a reinforcement cage, wherein part of reinforcements in the reinforcement cage protrude along the radial direction to form a semicircular reinforcement cage with a circular arc-shaped outline;
arranging a bamboo plywood, wherein the bamboo plywood is connected to the semicircular reinforcement cage;
lowering the reinforcement cage to be inserted into the pile hole;
pouring concrete into the pile hole, and solidifying;
arranging a retaining wall on the top crown beam, and excavating earthwork;
and (5) removing the bamboo plywood to obtain the semicircular pile.
In a possible design, the welding has the location muscle on the semicircle muscle cage, the location muscle configuration is two and sets up respectively in relative both sides to can extend to ground and with subaerial stake site coincidence, realize its accurate location with this correction to the steel reinforcement cage position, and then guarantee the intensity of whole fender post through this kind of mode.
In one possible design, the bamboo plywood abuts against the reinforcement cage through a cushion block. Therefore, the bamboo plywood can be indirectly borne through the cushion block, so that the bamboo plywood can not be directly contacted with the reinforcement cage, on one hand, the contact area between the bamboo plywood and the cushion block can be increased, and on the other hand, the unit pressure intensity is reduced, and certain protection effect can be achieved on both the reinforcement cage and the bamboo plywood. Simultaneously, based on this kind of structural design, can also avoid the rainwater to soak the steel reinforcement cage, cause the steel reinforcement cage corrosion and influence its intensity, guarantee the bulk strength and the life of this fender pile indirectly, ensure broken stake (demolish bamboo plywood) and accomplish the back steel reinforcement cage protective layer and can satisfy the designing requirement.
In one possible design, the spacer is configured as a concrete spacer. Therefore, the steel reinforcement cage can be placed between the steel reinforcement and the template, the position of the steel reinforcement cage can be fixed, the steel reinforcement cage is prevented from being exposed and corroded, the structural durability is maintained, and the use safety and the structural safety of the semicircular pile are guaranteed.
In a possible design, the steel reinforcement cage includes many reinforcing bars of arranging along the circumferencial direction and winds the stirrup of locating many reinforcing bars one by one to can enclose and establish into the steel reinforcement cage that cross sectional shape is circular.
In one possible design, the bamboo plywood is connected to the semicircular reinforcement cage by an iron wire, wherein the iron wire is wound around the bamboo plywood and the semicircular reinforcement cage together every 60 cm.
In one possible design, the thickness of the bamboo plywood is 1.8-2.6 cm.
In one possible design, the thickness of the bamboo veneer is 2 cm.
In one possible design, the steel bar is configured as a hot rolled plain steel bar having a yield strength of not less than 335 MPa.
In one possible design, the compressive strength of the concrete after setting is equal to or greater than 30 MPa.
Through above-mentioned technical scheme, can utilize bamboo offset plate and convex long steel bar, enclose into the semicircle muscle cage that satisfies the construction requirements, so, can retrain the flow direction of concrete through the setting of bamboo offset plate. Therefore, in actual construction, after the concrete pouring work of the fender post is finished, the bamboo plywood forms a template interlayer between the broken concrete and the original concrete, so that the broken concrete is easier to peel and break. Thus, the concrete is poured into the reinforcement cage and after solidification, a round pile can be formed; and after the concrete poured into the semicircular reinforcement cage is solidified, a semicircular pile can be formed.
Therefore, the steel reinforcement cage can be accurately positioned by improving the construction method, so that the requirement on the flatness of the base surface is met while the construction efficiency of breaking the semicircular piles is improved, and the construction cost is reduced. In the subsequent construction process, the bamboo rubber plates are only required to be arranged on the plane of the half fender pile, so that the broken concrete is stripped from the original concrete in a loose manner, the construction difficulty is reduced, and the method has better practicability.
In the whole construction process, only materials such as bamboo plywood and reinforcing steel bars which are easy to purchase and low in price need to be input, so that the cost input is reduced, and the economy of the whole project is improved. Simultaneously, because the demolishment of bamboo plywood is comparatively easy, can reduce artificial input, the noise has greatly reduced simultaneously, accords with green construction requirement.
Drawings
Fig. 1 is a schematic diagram illustrating the positioning of a semicircular pile cage in the construction method of a semicircular pile for a covered and excavated station according to the present invention;
fig. 2 is a schematic view of installation of a bamboo plywood in the construction method of the semi-circular pile for covering and digging a station provided by the invention.
Description of the reference numerals
1-reinforcement cage, 2-semicircular reinforcement cage, 3-bamboo plywood, 4-positioning rib, 5-ground, 61-upper crown beam, 62-lower crown beam, 7-concrete and 8-iron wire.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
According to the specific implementation mode of the disclosure, a construction method for covering and digging a station semicircular pile is provided.
Referring to fig. 1 and 2, the construction method of the semi-circular pile for the covered and excavated station includes the following steps: pile position lofting is carried out on the fender pile, and a positioning hole is formed in the ground 5 according to the structure of the fender pile; preparing a reinforcement cage 1, wherein part of reinforcements in the reinforcement cage 1 protrude in the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected to the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
For the sake of a differential description, the retaining wall is here a crown beam 61. In the present disclosure, a lower crown beam 62 is also provided for supporting the cover plate.
Specifically, the bamboo plywood 3 and the convex long steel bars can be utilized to enclose the semicircular reinforcement cage 2 meeting the construction requirements, so that the flow direction of the concrete 7 can be restricted by the arrangement of the bamboo plywood 3. In actual construction, after the concrete 7 of the fender post is poured, the bamboo plywood 3 forms a template interlayer between the broken concrete 7 and the original concrete 7, so that the broken concrete 7 is easier to peel and break. In this way, the concrete 7 is poured into the reinforcement cage 1 and, after solidification, a round pile can be formed; and after the concrete 7 poured into the semicircular reinforcement cage 2 is solidified, a semicircular pile can be formed.
Therefore, by improving the construction method, the steel reinforcement cage 1 can be accurately positioned, the construction efficiency of breaking the semicircular piles is improved, the requirement on the flatness of the base surface during design is met, and the construction cost is reduced. In the subsequent construction process, the bamboo rubber plates 3 are only required to be arranged on the plane of the fender pile half pile, so that the broken concrete 7 is easily stripped from the original-state concrete 7, the construction difficulty is reduced, and the method has better practicability.
In the whole construction process, only the materials such as the bamboo plywood 3 and the reinforcing steel bars, which are easy to purchase and have low price, are needed to be input, so that the cost input is reduced, and the economy of the whole project is improved. Simultaneously, because the demolishment of bamboo plywood 3 is comparatively easy, can reduce artificial input, the noise has greatly reduced simultaneously, accords with green construction requirement.
In an embodiment provided by the present disclosure, the semicircular reinforcement cage 2 is welded with the positioning ribs 4, and the positioning ribs 4 are configured to be two and are respectively disposed on two opposite sides so as to be able to extend to the ground 5 and coincide with pile sites on the ground 5, thereby ensuring the positioning accuracy of the reinforcement cage 1. Even the condition of angular migration appears in the process of transferring of steel reinforcement cage 1, also can realize its accurate location to the correction of steel reinforcement cage 1 position, and then guarantee the compressive strength of whole fender pile through this kind of mode.
In the present disclosure, the bamboo plywood 3 abuts against the reinforcement cage 1 through a cushion block. So, can come indirect bearing bamboo glued membrane 3 through the cushion for bamboo glued membrane 3 can not the direct contact to steel reinforcement cage 1, can increase the area of contact of bamboo glued membrane 3 and cushion on the one hand, thereby reduces the unit pressure, can all play certain guard action to both steel reinforcement cage 1 and bamboo glued membrane 3. Simultaneously, based on this kind of structural design, can also avoid rainwater infiltration steel reinforcement cage 1, cause steel reinforcement cage 1 corrosion and influence its intensity, guarantee this fender pile's bulk strength and life indirectly, ensure that 1 protective layer of steel reinforcement cage can satisfy the designing requirement after broken stake is accomplished.
In one embodiment provided by the present disclosure, the spacer is configured as a concrete spacer, that is, the spacer is configured as a concrete 7 spacer, and is placed between the steel bar and the formwork, so as to fix the position of the steel bar cage 1, thereby preventing the steel bar cage 1 from being exposed and corroded, thereby maintaining the structural durability, and ensuring the use safety and the structural safety of the semicircular pile.
In an embodiment provided by the present disclosure, the reinforcement cage 1 includes a plurality of reinforcements arranged along the circumferential direction and stirrups wound around the plurality of reinforcements one by one to enclose the reinforcement cage 1 having a circular cross-sectional shape. Therefore, the specification and the number of the steel reinforcement cages 1 can be adjusted conveniently according to the designed steel structure, and the flexibility is good.
In this disclosure, bamboo plywood 3 pass through iron wire 8 connect in semicircle muscle cage 2 to adjust the inseparable degree of connection. Wherein, every 60cm of iron wire 8 twine jointly in bamboo offset plate 3 with semicircle muscle cage 2 is of value to like this and guarantees the joint strength between bamboo offset plate 3 and the semicircle muscle cage 2 to make bamboo offset plate 3 play better effect of blockking to concrete 7, prevent that concrete 7 from spilling from the side.
In one embodiment provided by the present disclosure, the thickness of the bamboo plywood 3 is 1.8-2.6 cm, which is beneficial to ensure the resisting effect on the concrete 7, so that the concrete 7 can be set and formed.
In one embodiment, the bamboo plywood 3 has a thickness of 2 cm.
The invention has the beneficial effects that:
(1) the construction method of the semicircular pile is suitable for the construction of the fender pile with the lower part being circular and the upper part being in a semicircular structure form, and can be widely applied to the construction of the fender pile of a station dug by a subway cover. The construction method has the advantages of improving work efficiency, reducing noise and improving construction quality, meets the requirement of green construction, and has good popularization prospect.
(2) The cost investment is low, and the bamboo plywood 3, the iron wire and the reinforcing steel bar which are easily purchased and low in price can be used. Meanwhile, the operation is simple, and the construction is convenient.
(3) The fender pile breaking difficulty is reduced, the influence of noise disturbing residents is reduced to a great extent, and the green construction requirement is met.
Example 1
In the embodiment, the construction method for covering and digging the semi-circular pile of the station comprises the following steps: pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground 5 according to the pile position to form a pile hole; preparing a reinforcement cage 1, wherein in the reinforcement cage 1, part of reinforcements protrude along the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected with the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
Wherein, the welding has location muscle 4 on the semicircle muscle cage 2, and location muscle 4 configuration is two and sets up respectively in relative both sides to can extend to ground 5 and with the pile position coincidence on the ground 5. Two bamboo rubber plates are adopted, and the bamboo rubber plates 3 are abutted to the reinforcement cage 1 through concrete cushion blocks.
The steel reinforcement cage 1 includes 20 reinforcing bars arranged along the circumferential direction and stirrups wound around a plurality of reinforcing bars one by one to can enclose into the steel reinforcement cage 1 that the cross-sectional shape is circular. Bamboo plywood 3 passes through the iron wire and connects in semicircle muscle cage 2, and wherein, the iron wire twines in bamboo plywood 3 and semicircle muscle cage 2 once per 60 cm.
The thickness of the bamboo plywood 3 is 1.8 cm. The reinforcing bar configuration is hot rolling plain steel muscle, and this hot rolling plain steel muscle's yield strength is 350MPa, and the compressive strength after concrete 7 solidifies is 35 MPa.
Example 2
In this embodiment, the construction method of the semi-circular pile for covering and digging a station includes the following steps: pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground 5 according to the pile position to form a pile hole; preparing a reinforcement cage 1, wherein in the reinforcement cage 1, part of reinforcements protrude along the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected with the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
The welding has location muscle 4 on the semicircle muscle cage 2, and location muscle 4 configuration is two and sets up respectively in relative both sides to can extend to ground 5 and with the pile site stake hole point location coincidence on the ground 5. The bamboo plywood 3 is connected with the reinforcement cage 1 in an abutting mode through a concrete cushion block.
The reinforcement cage 1 includes 22 reinforcing bars arranged along the circumferential direction and stirrups wound around the many reinforcing bars one by one to can enclose into the reinforcement cage 1 that the cross-sectional shape is circular.
The reinforcing bar configuration is hot rolling plain steel muscle, and this hot rolling plain steel muscle's yield strength is 350 MPa. The compressive strength of the concrete 7 after setting is 33 MPa.
Example 3
In this embodiment, the construction method of the semi-circular pile for covering and digging a station includes the following steps: pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground 5 according to the pile position to form a pile hole; preparing a reinforcement cage 1, wherein in the reinforcement cage 1, part of reinforcements protrude along the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected with the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
The welding has location muscle 4 on the semicircle muscle cage 2, and location muscle 4 configuration is two and sets up respectively in relative both sides to can extend to ground 5 and with the pile position coincidence on the ground 5. The bamboo plywood 3 is connected with the reinforcement cage 1 in an abutting mode through a concrete cushion block.
The reinforcement cage 1 includes 26 reinforcing bars arranged along the circumferential direction and stirrups wound around the many reinforcing bars one by one to can enclose into the reinforcement cage 1 that the cross-sectional shape is circular. Bamboo plywood 3 passes through the iron wire and connects in semicircle muscle cage 2, and wherein, the iron wire twines in bamboo plywood 3 and semicircle muscle cage 2 once per 60cm, has adopted two bamboo plywood, and the thickness of bamboo plywood 3 is 2.6 cm.
The reinforcing bar configuration is hot rolling plain steel muscle, and this hot rolling plain steel muscle's yield strength is 335 MPa. The compressive strength of the concrete 7 after setting was 35 MPa.
Example 4
In this embodiment, the construction method of the semi-circular pile for covering and digging a station includes the following steps: pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground 5 according to the pile position to form a pile hole; preparing a reinforcement cage 1, wherein in the reinforcement cage 1, part of reinforcements protrude along the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected with the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the crown beam is provided with a retaining wall, and the earthwork is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
The welding has location muscle 4 on the semicircle muscle cage 2, and location muscle 4 configuration is two and sets up respectively in relative both sides to can extend to ground 5 and with the pile position coincidence on the ground 5. The bamboo plywood 3 is connected with the reinforcement cage 1 in an abutting mode through a concrete cushion block.
The steel reinforcement cage 1 includes 24 reinforcing bars arranged along the circumferential direction and stirrups wound around a plurality of reinforcing bars one by one to can enclose into the steel reinforcement cage 1 that the cross-sectional shape is circular. Bamboo plywood 3 passes through the iron wire and connects in semicircle muscle cage 2, and wherein, the iron wire twines in bamboo plywood 3 and semicircle muscle cage 2 once per 60cm, has adopted two bamboo plywood, and the thickness of bamboo plywood 3 is 2.4 cm.
The reinforcing bar configuration is hot rolling plain steel muscle, and this hot rolling plain steel muscle's yield strength is 350 MPa. The compressive strength of the concrete 7 after setting was 33 MPa.
Example 5
In this embodiment, the construction method of the semi-circular pile for covering and digging a station includes the following steps: pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground 5 according to the pile position to form a pile hole; preparing a reinforcement cage 1, wherein in the reinforcement cage 1, part of reinforcements protrude along the radial direction to form a semicircular reinforcement cage 2 with a circular arc-shaped outline; arranging a bamboo plywood 3, wherein the bamboo plywood 3 is connected with the semicircular reinforcement cage 2; lowering the reinforcement cage 1 to be inserted into the pile hole; pouring concrete 7 into the pile hole, and solidifying; the top beam is provided with a retaining wall, and earth is excavated; and (4) removing the bamboo plywood 3 to obtain the semicircular pile.
The welding has location muscle 4 on the semicircle muscle cage 2, and location muscle 4 configuration is two and sets up respectively in relative both sides to can extend to ground 5 and with the pile position coincidence on the ground 5. The bamboo plywood 3 is connected with the reinforcement cage 1 in an abutting mode through a concrete cushion block.
The steel reinforcement cage 1 includes 24 reinforcing bars arranged along the circumferential direction and stirrups wound around a plurality of reinforcing bars one by one to can enclose into the steel reinforcement cage 1 that the cross-sectional shape is circular. Bamboo plywood 3 passes through the iron wire and connects in semicircle muscle cage 2, and wherein, the iron wire twines in bamboo plywood 3 and semicircle muscle cage 2 once per 60cm, has adopted two bamboo plywood, and the thickness of bamboo plywood 3 is 2.2 cm.
The reinforcing bar configuration is hot rolling plain steel muscle, and this hot rolling plain steel muscle's yield strength is 335 MPa. The compressive strength of the concrete 7 after setting was 32 MPa.
In the above embodiments 1 to 5, when the method for constructing a semicircular pile is applied to the construction of the subway covering and excavating section, 283 fenders of fender piles are constructed in total in the whole covering and excavating section. Specifically, the compressive strength of the concrete 7 after solidification is more than 30MPa, wherein the HE type concrete 7 micro-expanding agent is added into the concrete 7.
The reinforcing steel bars are hot-rolled plain steel bars with yield strength of HPB335 or HRB 400. When welding, the selected welding rods are Q235B-E43 and Q345B-E55. All welds are of one quality grade and all butt welds require penetration and must be non-destructive inspected. In addition, when the concrete 7 is poured, the pouring is carried out in a continuous pouring mode, and when the pouring is necessary, the intermittent time does not exceed the final setting time of the concrete 7. Therefore, the construction efficiency is improved, the construction quality of the semicircular pile is guaranteed, meanwhile, the influence of noise on surrounding residents is reduced, and the construction method achieves a good effect.
The construction method has the following advantages:
(1) reduce the cost input
283 semicircular piles are constructed, 2 (1.2 m. by 2.4m) bamboo plywood 3 are required for constructing each pile, 566 piles are constructed, and the investment cost is about 8 ten thousand yuan.
② the total investment of the installation personnel of the bamboo plywood 3 is about 20 people, and the labor cost is increased by about 0.4 ten thousand yuan.
And the investment cost of the positioning steel bars of the steel reinforcement cage 1 and the iron wires fixed by the bamboo plywood 3 is about 0.3 ten thousand yuan.
(2) Other economic benefits
Firstly, the working efficiency of the semicircular pile breaking is optimized through the construction process, the manual input of 2 persons can be reduced when each pile is broken, the manual input of 566 persons can be reduced in an accumulated mode, and the labor cost is saved by about 19.8 ten thousand yuan.
Secondly, the steel reinforcement cage 1 is accurately positioned, so that the labor and material investment for later-stage position deviation correction of the steel reinforcement cage 1 is reduced, and the cost is saved by about 4 ten thousand yuan.
The sum of the above results in the total benefit of 19.8+4-8-0.4-0.3 ═ 15.1 ten thousand yuan.
(3) Bring social benefits
The application of the construction method creates economic benefits, improves construction efficiency, shortens construction time and saves construction period for 15 days. Meanwhile, the influence of pile body breaking noise on the life of surrounding residents is reduced, and consistent approval and high evaluation of other relevant units such as construction units, supervision units, design units and the like are obtained.
The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.
Claims (10)
1. A construction method for semi-circular piles for covering and digging stations is characterized by comprising the following steps:
pile position lofting is carried out on the fender pile, and drilling construction is carried out on the ground (5) according to the pile position to form a pile hole;
preparing a reinforcement cage (1), wherein part of reinforcements in the reinforcement cage (1) protrude in the radial direction to form a semicircular reinforcement cage (2) with a circular arc-shaped outline;
arranging a bamboo plywood (3), wherein the bamboo plywood (3) is connected to the semicircular reinforcement cage (2);
lowering the reinforcement cage (1) to be inserted into the pile hole;
pouring concrete (7) into the pile hole, and solidifying;
the crown beam is provided with a retaining wall, and the earthwork is excavated;
and (4) removing the bamboo plywood (3) to obtain the semicircular pile.
2. The construction method of the semi-circular pile for the cover-dug station as claimed in claim 1, wherein the semi-circular reinforcement cage (2) is welded with positioning ribs (4), and the positioning ribs (4) are configured into two and respectively arranged at two opposite sides so as to extend to the ground (5) and coincide with pile positions on the ground (5).
3. The construction method of the cover-excavated station semi-circular pile according to claim 1, wherein the bamboo plywood (3) abuts against the reinforcement cage (1) through a spacer.
4. The method of constructing a cover-dug station semi-circular pile as claimed in claim 3, wherein the spacer is configured as a concrete spacer.
5. The method of constructing a semi-circular pile for a covered and excavated station according to claim 1, wherein the reinforcement cage (1) includes a plurality of reinforcing bars arranged in a circumferential direction and stirrups wound around the plurality of reinforcing bars one by one so as to surround the reinforcement cage (1) having a circular cross-sectional shape.
6. The construction method of a cover-excavating station semicircular pile according to claim 1, wherein the bamboo plywood (3) is connected to the semicircular reinforcement cage (2) by iron wires, wherein the iron wires are wound around the bamboo plywood (3) and the semicircular reinforcement cage (2) at one turn per 60 cm.
7. The construction method of the semi-circular pile for the cover-and-dig station as claimed in claim 1, wherein the thickness of the bamboo plywood (3) is 1.8-2.6 cm.
8. The construction method of a cover-dug station semi-circular pile as claimed in claim 7, wherein the thickness of the bamboo plywood (3) is 2 cm.
9. The construction method of a semi-circular pile for a cover-and-dig station as claimed in claim 1, wherein the steel bar is configured as a hot rolled plain steel bar, and the yield strength of the hot rolled plain steel bar is not lower than 335 MPa.
10. The construction method of a semi-circular pile for a covered and excavated station according to claim 1, wherein the compressive strength of the concrete (7) after setting is equal to or greater than 30 MPa.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459034.1A CN114703833A (en) | 2022-04-27 | 2022-04-27 | Construction method for semi-circular piles for covering and digging station |
| ZA2022/06406A ZA202206406B (en) | 2022-04-27 | 2022-06-09 | Construction method of semi-cylindrical pile for cut-and-cover station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459034.1A CN114703833A (en) | 2022-04-27 | 2022-04-27 | Construction method for semi-circular piles for covering and digging station |
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| Publication Number | Publication Date |
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| CN114703833A true CN114703833A (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210459034.1A Pending CN114703833A (en) | 2022-04-27 | 2022-04-27 | Construction method for semi-circular piles for covering and digging station |
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| Country | Link |
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| CN (1) | CN114703833A (en) |
| ZA (1) | ZA202206406B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005163421A (en) * | 2003-12-03 | 2005-06-23 | Shimizu Corp | Pile head reinforcing structure |
| CN103437349A (en) * | 2013-08-26 | 2013-12-11 | 中冶天工集团有限公司 | Method for constructing reinforced-concrete-poured irregular-shaped pile |
| CN106013241A (en) * | 2016-07-12 | 2016-10-12 | 中铁第勘察设计院集团有限公司 | Crown beam foundation trench upright construction and cover-excavation method station combination structural system and construction method |
| CN207749515U (en) * | 2017-12-21 | 2018-08-21 | 中铁二十一局集团轨道交通工程有限公司 | A kind of semicircle pile driving construction device |
| CN211849437U (en) * | 2019-12-31 | 2020-11-03 | 中铁大桥局集团第一工程有限公司 | Adjustable steel reinforcement cage positioning device |
| CN113482021A (en) * | 2021-08-19 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Half-pile supporting structure for excavating shallow foundation pit above underground structure floor and construction method |
| CN113718793A (en) * | 2021-09-15 | 2021-11-30 | 中交一公局集团有限公司 | Cover-excavation construction fender post structure and construction method |
| CN215888234U (en) * | 2021-05-21 | 2022-02-22 | 粤水电轨道交通建设有限公司 | Half pile head breaking structure |
-
2022
- 2022-04-27 CN CN202210459034.1A patent/CN114703833A/en active Pending
- 2022-06-09 ZA ZA2022/06406A patent/ZA202206406B/en unknown
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005163421A (en) * | 2003-12-03 | 2005-06-23 | Shimizu Corp | Pile head reinforcing structure |
| CN103437349A (en) * | 2013-08-26 | 2013-12-11 | 中冶天工集团有限公司 | Method for constructing reinforced-concrete-poured irregular-shaped pile |
| CN106013241A (en) * | 2016-07-12 | 2016-10-12 | 中铁第勘察设计院集团有限公司 | Crown beam foundation trench upright construction and cover-excavation method station combination structural system and construction method |
| CN207749515U (en) * | 2017-12-21 | 2018-08-21 | 中铁二十一局集团轨道交通工程有限公司 | A kind of semicircle pile driving construction device |
| CN211849437U (en) * | 2019-12-31 | 2020-11-03 | 中铁大桥局集团第一工程有限公司 | Adjustable steel reinforcement cage positioning device |
| CN215888234U (en) * | 2021-05-21 | 2022-02-22 | 粤水电轨道交通建设有限公司 | Half pile head breaking structure |
| CN113482021A (en) * | 2021-08-19 | 2021-10-08 | 中铁第六勘察设计院集团有限公司 | Half-pile supporting structure for excavating shallow foundation pit above underground structure floor and construction method |
| CN113718793A (en) * | 2021-09-15 | 2021-11-30 | 中交一公局集团有限公司 | Cover-excavation construction fender post structure and construction method |
Non-Patent Citations (1)
| Title |
|---|
| 梁丽双: "深基坑围护桩半桩施工技术", 《建筑机械》 * |
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| ZA202206406B (en) | 2022-08-31 |
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Address after: 25 Xinjian Road, Sanjiadian, Mentougou District, Beijing Applicant after: NO.4 ENGINEERING CO.,LTD. OF CHINA RAILWAY NO.3 ENGINEERING GROUP CO.,LTD. Applicant after: CHINA RAILWAY NO.3 ENGINEERING GROUP Co.,Ltd. Applicant after: China Railway North Investment Co.,Ltd. Address before: No.269, Yingze street, Yingze District, Taiyuan City, Shanxi Province Applicant before: CHINA RAILWAY NO.3 ENGINEERING GROUP Co.,Ltd. Applicant before: NO.4 ENGINEERING CO.,LTD. OF CHINA RAILWAY NO.3 ENGINEERING GROUP CO.,LTD. Applicant before: China Railway North Investment Co.,Ltd. |
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Application publication date: 20220705 |