CN110438988A - A kind of prefabricated bulkhead and pore digging method - Google Patents

A kind of prefabricated bulkhead and pore digging method Download PDF

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Publication number
CN110438988A
CN110438988A CN201910750428.0A CN201910750428A CN110438988A CN 110438988 A CN110438988 A CN 110438988A CN 201910750428 A CN201910750428 A CN 201910750428A CN 110438988 A CN110438988 A CN 110438988A
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CN
China
Prior art keywords
prefabricated bulkhead
segment
prefabricated
bulkhead
ontology
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Pending
Application number
CN201910750428.0A
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Chinese (zh)
Inventor
杨泉
徐骏
高柏松
郭海强
王占盛
李炼
姚裕春
陶奇
庞林
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China Railway Eryuan Engineering Group Co Ltd CREEC
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China Railway Eryuan Engineering Group Co Ltd CREEC
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Priority to CN201910750428.0A priority Critical patent/CN110438988A/en
Publication of CN110438988A publication Critical patent/CN110438988A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/66Mould-pipes or other moulds
    • E02D5/68Mould-pipes or other moulds for making bulkheads or elements thereof

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lining And Supports For Tunnels (AREA)

Abstract

The invention discloses a kind of prefabricated bulkhead and pore digging methods, its excavation method is first to carry out drawing hole construction using mechanical in the excavation region of rectangular opening, after internal openings, the corner soil body within the scope of rectangular opening is disturbed, internal stress is released, subsequent excavation difficulty substantially reduces, and with being continuously increased for the gravity of prefabricated bulkhead, the infall process of prefabricated bulkhead is more easier, conducive to raising construction efficiency, rectangular opening can effectively be excavated using this method, improve working security, reduce difficulty of construction, meet the pore-forming demand of large-sized rectangular opening, prefabricated bulkhead structure is effectively installed simultaneously, avoid the occurrence of collapse hole risk, borehole and retaining wall can synchronously complete, conducive to shortening the construction period, energy conservation and environmental protection, effectively retaining wall is avoided hidden danger of quality occur, friction pile especially suitable for the high and cold high altitude localities such as Sichuan-Tibet line is applied Work.

Description

A kind of prefabricated bulkhead and pore digging method
Technical field
The present invention relates to panelling construction technical field, in particular to a kind of prefabricated bulkhead and pore digging method.
Background technique
With the development of the social economy, large diameter pile and super-large diameter stake frequently occur in engineering, traditional construction technical face Face great challenge.The general cyclotomy shape stake in pile foundation section and rectangular pile, at present circle stake mostly use mechanical hole building to cooperate mud off Construction, realizes Fully-mechanized construction, such as uses churning driven and impact drill, but its diameter is typically only capable to reach 2.5m, and rectangle Stake (such as friction pile) sectional dimension is larger, and usually 3m * 4m is even more big, relies on manual work pore-forming in the prior art more, and Using cast-in-place concrete retaining wall carry out supporting prevent collapse hole, manually digging hole risk is high and retaining wall needs formwork erection cast-in-place, the duration compared with Long, extreme influence reduces engineering efficiency.
Summary of the invention
It is an object of the invention to overcome in the prior art rectangular opening sectional dimension it is larger, can not by mechanical hole building, and Using manually digging hole risk height, low efficiency, the above-mentioned deficiency such as long in time limit, Forming Quality is poor, a kind of prefabricated bulkhead and stake holes are provided Excavation method.
To achieve the goals above, the present invention provides following technical schemes:
A kind of pore digging method, comprises the following steps:
A, construction lofting determines stake holes position;
B, using machinery progress pilot hole to designed elevation depth, and the pilot hole earthwork is cleared;
C, sinking prefabricated bulkhead first positions the prefabricated bulkhead segment of first segment, then by the prefabricated bulkhead section of first segment Suitable for reading be depressed into of section is higher by the 10cm-50cm of nature ground, then excavates the earthwork in the prefabricated bulkhead and clear;
It d, will be described after the prefabricated bulkhead segment of next section being connected to the prefabricated bulkhead segment top of previous section Suitable for reading be depressed into of next section prefabricated bulkhead segment is higher by the 10cm-50cm of nature ground, then excavates the soil in the prefabricated bulkhead It simultaneously clears side;
E, step d is repeated, until the prefabricated bulkhead segment of final section to be connected to the prefabricated shield of section second from the bottom Behind the top of wall segment, the suitable for reading of the prefabricated bulkhead segment of final section is depressed at nature ground, is then excavated described pre- The earthwork in retaining wall processed is simultaneously cleared, and the excavation of stake holes is completed;;
Wherein, the prefabricated bulkhead includes several described prefabricated bulkhead segments, and the section of the prefabricated bulkhead is rectangle, step The sectional dimension of pilot hole is less than the sectional dimension of the prefabricated bulkhead in b.
Using a kind of pore digging method of the present invention, in order to excavate rectangular opening, first in the excavation of rectangular opening Drawing hole construction is carried out using mechanical in region, the sectional dimension of pilot hole is less than the sectional dimension of the prefabricated bulkhead, that is, is less than square The sectional dimension in shape hole, after internal openings, the corner soil body within the scope of rectangular opening is disturbed, and internal stress is released, Subsequent excavation difficulty substantially reduces, and excavates the earthwork in the prefabricated bulkhead again using first sedimentation prefabricated bulkhead segment, into The safety that the guarantee of one step is excavated, while being continuously increased with the gravity of prefabricated bulkhead, the infall process of prefabricated bulkhead is more It is easy to add, and is conducive to improve construction efficiency, can effectively excavate rectangular opening using this method, improve working security, reduces artificial It participates in, reduces difficulty of construction, meet the pore-forming demand of large-sized rectangular opening, while effectively installation prefabricated bulkhead structure, avoid There is collapse hole risk, borehole and retaining wall can synchronously complete, and conducive to shortening the construction period, energy conservation and environmental protection effectively avoids retaining wall from matter occur Measure hidden danger, the antiskid pile driving construction especially suitable for the high and cold high altitude localities such as Sichuan-Tibet line.
Preferably, in the step b, pore-forming center is located at the center of the prefabricated bulkhead, and mud is used in pilot hole Retaining wall.
Preferably, in the step c, the prefabricated bulkhead segment is settled using static pressure method.
Preferably, the length of the prefabricated bulkhead segment is 1m-2m.
Preferably, the prefabricated bulkhead is reinforced concrete structure, when the two neighboring prefabricated bulkhead segment connects, First binding material will be poured into the groove of mounted prefabricated bulkhead segment top surface, then by the prefabricated bulkhead to be installed The shear connector and reinforcing bar of segment bottom surface are inserted into corresponding groove.
Easy to connect and stable between adjacent segment, convenient for positioning, shearing resistance effect is good, avoids corroding.
A kind of prefabricated bulkhead, applied to the pore digging method as described in any of the above-described, including ontology, the ontology is cut Face is rectangle, and the ontology includes several prefabricated bulkhead segments, and all prefabricated bulkhead segments continuously stack setting, adjacent Jointing is equipped between two prefabricated bulkhead segments.
Using a kind of prefabricated bulkhead of the present invention, as the dado structure to the molding rectangular opening of needs, in borehole When can effectively avoid collapse hole, the compact dimensions and hole quality of rectangular opening are effectively ensured, reduce cast-in-place formwork, assembling reinforcement, It pours and shortens the construction period with curing concrete period, raising construction efficiency, improve working security.
Preferably, the bottom of the ontology is equipped with blade foot.
It is further preferred that the inclined-plane of the blade foot is arranged towards the outside of the ontology, the inclined-plane of the blade foot and institute Stating the angle between the axial direction of ontology is 15 ° -55 °.
Using aforesaid way, resistance when prefabricated bulkhead decentralization is efficiently reduced, construction cost is reduced, guarantees construction matter Amount.
Preferably, the jointing includes the top connection portion being located above and underlying lower contact portion, it is described on Connector portions include several shear connectors and several reinforcing bars, and the lower contact portion includes several grooves and is set to corresponding described recessed Built-in fitting in slot, the top connection portion and the adaptation connection of lower contact portion.
Preferably, the ontology is reinforced concrete member, and the wall thickness of the ontology is 20 cm -50cm, each described The length of prefabricated bulkhead segment is 1m-2m.
In conclusion compared with prior art, the beneficial effects of the present invention are:
1, using a kind of pore digging method of the present invention, rectangular opening can be effectively excavated using this method, improve construction Safety reduces artificial participation, reduces difficulty of construction, meets the pore-forming demand of large-sized rectangular opening, while effectively installation is pre- Dado structure processed avoids the occurrence of collapse hole risk, and borehole and retaining wall can synchronously complete, conducive to shortening the construction period, energy conservation and environmental protection, effectively Retaining wall is avoided hidden danger of quality occur, the antiskid pile driving construction especially suitable for the high and cold high altitude localities such as Sichuan-Tibet line.
2, using a kind of prefabricated bulkhead of the present invention, collapse hole can be effectively avoided in borehole, rectangle is effectively ensured The compact dimensions and hole quality in hole reduce cast-in-place formwork, assembling reinforcement, pour and curing concrete period, raising construction effect Rate shortens the construction period, improves working security.
Detailed description of the invention:
Fig. 1 is the schematic diagram of one of present invention pore digging method;
Fig. 2 is the structural schematic diagram of one of embodiment 1 prefabricated bulkhead;
Fig. 3 is the structural schematic diagram of the prefabricated bulkhead segment of the first segment in embodiment 1;
Fig. 4 is the structural schematic diagram of the prefabricated bulkhead segment of the middle node in embodiment 1;
Fig. 5 is the structural schematic diagram of the prefabricated bulkhead segment of the final section in embodiment 1.
Marked in the figure: 1- prefabricated bulkhead segment, 2- groove, 3- blade foot.
Specific embodiment
With reference to the accompanying drawing and specific embodiment the present invention is described in further detail.But this should not be interpreted as to this The range for inventing above-mentioned theme is only limitted to embodiment below, all to belong to the present invention based on the technology that the content of present invention is realized Range.
Embodiment 1
A kind of pore digging method of the present invention, comprises the following steps:
A, construction lofting determines stake holes position;
B, using machinery progress pilot hole to designed elevation depth, and the pilot hole earthwork is cleared;
C, sinking prefabricated bulkhead first positions the prefabricated bulkhead segment 1 of first segment, then by the prefabricated bulkhead section of first segment Suitable for reading be depressed into of section 1 is higher by the 10cm-50cm of nature ground, then excavates the earthwork in the prefabricated bulkhead and clear;
It d, will be next after the prefabricated bulkhead segment 1 of next section to be connected to 1 top of prefabricated bulkhead segment of previous section Suitable for reading be depressed into of the prefabricated bulkhead segment 1 of section is higher by the 10cm-50cm of nature ground, then excavates in the prefabricated bulkhead The earthwork is simultaneously cleared;
E, step d is repeated, until the prefabricated bulkhead segment 1 of final section to be connected to the prefabricated shield of section second from the bottom Behind 1 top of wall segment, the suitable for reading of the prefabricated bulkhead segment 1 of final section is depressed at nature ground, then described in excavation The earthwork in prefabricated bulkhead is simultaneously cleared, and the excavation of stake holes is completed;
Wherein, the prefabricated bulkhead includes several described prefabricated bulkhead segments 1, and the section of the prefabricated bulkhead is rectangle, institute There is the prefabricated bulkhead segment 1 continuously to stack setting, the prefabricated bulkhead is reinforced concrete member, each prefabricated bulkhead The length of segment 1 is 1m-2m, and the wall thickness of the prefabricated bulkhead is 20 cm -50cm, the ruler of all prefabricated bulkhead segments 1 It is very little all the same, as shown in Figure 2.
Jointing, the position when jointing is included in connection are equipped between the two neighboring prefabricated bulkhead segment 1 In the top connection portion and underlying lower contact portion of top, the top connection portion and lower contact portion adaptation connection, it is described on connect Head includes several shear connectors and several reinforcing bars, and the lower contact portion includes several grooves 2 and is set to corresponding described recessed Built-in fitting (such as grout sleeve) in slot 2, specifically, as shown in figure 3, the top surface of the prefabricated bulkhead segment 1 of first segment has There are several grooves 2, the sword of a circle steel is continuously arranged in four end faces of 1 bottom of prefabricated bulkhead segment of first segment Foot 3 efficiently reduces resistance when prefabricated bulkhead decentralization, reduces construction cost, guarantees construction quality, it is preferred that the sword The bottom surface of foot 3 is plane, and the width of 3 bottom surface of blade foot is less than the width of its top surface, and the inner wall of the blade foot 3 is to face directly, with The inner wall of the prefabricated bulkhead flushes, and the outer wall of the blade foot 3 is inclined-plane, the inclined-plane of the blade foot 3 and the axial direction of the ontology Between angle be 15 ° -55 °, such as 30 °;As shown in figure 4, each end face of the bottom of the prefabricated bulkhead segment 1 of middle node It is extended with vertical muscle and pre-buried shear connector, the corresponding position of the top surface of the prefabricated bulkhead segment 1 of middle node is equipped with groove 2, It, first will be in the groove 2 of mounted 1 top surface of prefabricated bulkhead segment when the two neighboring prefabricated bulkhead segment 1 connects Binding material, such as strength cement-based grouting material are poured into, then inserts the shear connector of 1 bottom surface of prefabricated bulkhead segment to be installed and reinforcing bar Entering in corresponding groove 2, easy to connect between adjacent segment and stable, convenient for positioning, shearing resistance effect is good, it avoids corroding, last The structure of the prefabricated bulkhead segment 1 of section is similar with middle node, as shown in Figure 5.
In order to excavate rectangular opening, stake holes position is first determined, applied in the excavation region of rectangular opening using the mechanical pilot hole that carries out Work, such as forms round hole using churning driven, and the sectional dimension of round hole is less than the sectional dimension of rectangular opening, it is preferred that round hole Pore-forming center be located at the center of the prefabricated bulkhead mud can be used in pilot hole according to the diameter of round hole and stratum needs Retaining wall is starched, after internal openings, as shown in Figure 1, starting sinking prefabricated bulkhead, static pressure method is such as used, first by the prefabricated of first segment Retaining wall segment 1 positions, and suitable for reading be depressed into of the prefabricated bulkhead segment 1 of first segment is then higher by nature ground 10cm-50cm Place such as 50cm at, then excavates the earthwork in the prefabricated bulkhead segment 1 of first segment and clears, due to internal with aperture, square The corner soil body within the scope of shape hole is disturbed, and internal stress is released, and subsequent excavation difficulty substantially reduces, and using first The earthwork in corresponding region is excavated in sedimentation prefabricated bulkhead segment 1 again, further to ensure the safety excavated, then in first segment The prefabricated bulkhead segment 1 the groove 2 in be in the milk, by the shear connector and steel of the prefabricated bulkhead segment 1 of the second section Corresponding be inserted into the groove 2 of muscle is docked, and is then higher by suitable for reading be depressed into of the prefabricated bulkhead segment 1 of the second section certainly It at right ground 10cm-50cm, then excavates the earthwork in the prefabricated bulkhead and clears, then connect prefabricated bulkhead described in third section Segment 1, piling are excavated the earthwork in the corresponding sedimentation depth of prefabricated bulkhead and are cleared, that is, repeat piling excavation above-mentioned and clear step Suddenly, the infall process of being continuously increased with the gravity of prefabricated bulkhead, prefabricated bulkhead is more easier, and is conducive to improve construction efficiency, Until after the prefabricated bulkhead segment 1 of final section to be connected to 1 top of prefabricated bulkhead segment of section second from the bottom, it will The suitable for reading of the prefabricated bulkhead segment 1 of final section is depressed at nature ground, finally excavates the earthwork in the prefabricated bulkhead And clear, complete the excavation of stake holes.
Rectangular opening can effectively be excavated using this method, guarantee the compact dimensions and hole quality of rectangular opening, improve construction Safety reduces artificial participation, reduces difficulty of construction, meets the pore-forming demand of large-sized rectangular opening, while effectively installation is pre- Dado structure processed avoids the occurrence of collapse hole risk, and borehole and retaining wall can synchronously complete, and reduces cast-in-place formwork, assembling reinforcement, pours With the curing concrete period, conducive to shortening the construction period, energy conservation and environmental protection effectively avoids retaining wall from hidden danger of quality occur, especially suitable for river Hide the antiskid pile driving construction of the high and cold high altitude localities such as line.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (10)

1. a kind of pore digging method, which is characterized in that comprise the following steps:
A, construction lofting determines stake holes position;
B, using machinery progress pilot hole to designed elevation depth, and the pilot hole earthwork is cleared;
C, sinking prefabricated bulkhead first positions the prefabricated bulkhead segment (1) of first segment, then by the prefabricated bulkhead of first segment Suitable for reading be depressed into of segment (1) is higher by the 10cm-50cm of nature ground, then excavates the earthwork in the prefabricated bulkhead and clear;
It d, will after the prefabricated bulkhead segment (1) of next section to be connected to prefabricated bulkhead segment (1) top of previous section Suitable for reading be depressed into of next section prefabricated bulkhead segment (1) is higher by the 10cm-50cm of nature ground, then excavates the prefabricated shield The earthwork in wall is simultaneously cleared;
E, step d is repeated, until the prefabricated bulkhead segment (1) of final section is connected to the described prefabricated of section second from the bottom Behind retaining wall segment (1) top, the suitable for reading of prefabricated bulkhead segment (1) of final section is depressed at nature ground, is then opened The earthwork dug in the prefabricated bulkhead is simultaneously cleared, and the excavation of stake holes is completed;
Wherein, the prefabricated bulkhead includes several described prefabricated bulkhead segments (1), and the section of the prefabricated bulkhead is rectangle, The sectional dimension of pilot hole is less than the sectional dimension of the prefabricated bulkhead in step b.
2. excavation method according to claim 1, which is characterized in that in the step b, pore-forming center is located at described pre- The center of retaining wall processed uses mud off in pilot hole.
3. excavation method according to claim 1, which is characterized in that in the step c, using static pressure method to described pre- Retaining wall segment (1) processed is settled.
4. excavation method according to claim 1 to 3, which is characterized in that the length of the prefabricated bulkhead segment (1) For 1m-2m.
5. excavation method according to claim 1 to 3, which is characterized in that the prefabricated bulkhead is armored concrete knot Structure, in the connection of the two neighboring prefabricated bulkhead segment (1), first by mounted prefabricated bulkhead segment (1) top surface Groove pours into binding material in (2), then by the shear connector of prefabricated bulkhead segment (1) bottom surface to be installed and reinforcing bar insertion pair In the groove (2) answered.
6. a kind of prefabricated bulkhead, which is characterized in that it is applied to pore digging method a method as claimed in any one of claims 1 to 5, including Ontology, the section of the ontology are rectangle, and the ontology includes several prefabricated bulkhead segments (1), all prefabricated bulkheads Segment (1) continuously stacks setting, is equipped with jointing between the two neighboring prefabricated bulkhead segment (1).
7. prefabricated bulkhead according to claim 6, which is characterized in that the bottom of the ontology is equipped with blade foot (3).
8. prefabricated bulkhead according to claim 7, which is characterized in that the inclined-plane of the blade foot (3) is towards the ontology Outside setting, the angle between the inclined-plane of the blade foot (3) and the axial direction of the ontology is 15 ° -55 °.
9. prefabricated bulkhead according to claim 6, which is characterized in that the jointing includes the top connection being located above Portion and underlying lower contact portion, the top connection portion include several shear connectors and several reinforcing bars, the lower contact portion Comprising several grooves (2) and the built-in fitting being set in the corresponding groove (2), the top connection portion and lower contact portion adaptation connect It connects.
10. according to any prefabricated bulkhead of claim 6-9, which is characterized in that the ontology is reinforced concrete member, The wall thickness of the ontology is 20 cm -50cm, and the length of each prefabricated bulkhead segment (1) is 1m-2m.
CN201910750428.0A 2019-08-14 2019-08-14 A kind of prefabricated bulkhead and pore digging method Pending CN110438988A (en)

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CN110904950A (en) * 2019-12-19 2020-03-24 中交第二公路勘察设计研究院有限公司 Steel structure retaining wall of anti-slide pile and construction method thereof
CN110952453A (en) * 2019-11-25 2020-04-03 通号建设集团有限公司 Construction method of abutment structure
CN110984143A (en) * 2019-12-31 2020-04-10 甘肃地质灾害防治工程勘查设计院 Prefabricated rectangular slide-resistant pile retaining wall and construction method thereof
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CN111321743A (en) * 2019-12-19 2020-06-23 中交第二公路勘察设计研究院有限公司 Design method of steel structure retaining wall of anti-slide pile
CN111321727A (en) * 2019-12-19 2020-06-23 中交第二公路勘察设计研究院有限公司 Design method of slide-resistant pile retaining wall structure
CN114517476A (en) * 2022-02-25 2022-05-20 广东省源天工程有限公司 Cast-in-place pile Internet of things accurate excavation pile-forming construction method

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CN110952453B (en) * 2019-11-25 2021-11-12 通号建设集团有限公司 Construction method of abutment structure
CN110904950A (en) * 2019-12-19 2020-03-24 中交第二公路勘察设计研究院有限公司 Steel structure retaining wall of anti-slide pile and construction method thereof
CN111321743A (en) * 2019-12-19 2020-06-23 中交第二公路勘察设计研究院有限公司 Design method of steel structure retaining wall of anti-slide pile
CN111321727A (en) * 2019-12-19 2020-06-23 中交第二公路勘察设计研究院有限公司 Design method of slide-resistant pile retaining wall structure
CN110984143A (en) * 2019-12-31 2020-04-10 甘肃地质灾害防治工程勘查设计院 Prefabricated rectangular slide-resistant pile retaining wall and construction method thereof
CN114517476A (en) * 2022-02-25 2022-05-20 广东省源天工程有限公司 Cast-in-place pile Internet of things accurate excavation pile-forming construction method

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