CN114775585A - Construction method of manual hole digging pile on plateau steep side slope - Google Patents
Construction method of manual hole digging pile on plateau steep side slope Download PDFInfo
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- CN114775585A CN114775585A CN202210555052.XA CN202210555052A CN114775585A CN 114775585 A CN114775585 A CN 114775585A CN 202210555052 A CN202210555052 A CN 202210555052A CN 114775585 A CN114775585 A CN 114775585A
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- 230000002787 reinforcement Effects 0.000 claims abstract description 10
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 230000009193 crawling Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000011435 rock Substances 0.000 claims description 52
- 238000005553 drilling Methods 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 26
- 238000009412 basement excavation Methods 0.000 claims description 20
- 230000008569 process Effects 0.000 claims description 19
- 239000002893 slag Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 5
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- 238000012544 monitoring process Methods 0.000 claims description 5
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
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- 239000002994 raw material Substances 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 231100000331 toxic Toxicity 0.000 claims description 3
- 230000002588 toxic effect Effects 0.000 claims description 3
- 230000009194 climbing Effects 0.000 claims description 2
- 238000010009 beating Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 7
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000001503 joint Anatomy 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
-
- 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
- E02D5/74—Means for anchoring structural elements or bulkheads
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/32—Safety or protective measures for persons during the construction of buildings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G27/00—Temporary arrangements for giving access from one level to another for men or vehicles, e.g. steps, ramps
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G3/00—Scaffolds essentially supported by building constructions, e.g. adjustable in height
- E04G3/24—Scaffolds essentially supported by building constructions, e.g. adjustable in height specially adapted for particular parts of buildings or for buildings of particular shape, e.g. chimney stacks or pylons
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/001—Safety or protective measures against falling down relating to scaffoldings
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G5/00—Component parts or accessories for scaffolds
- E04G5/08—Scaffold boards or planks
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
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Abstract
The invention discloses a construction method of a manual hole digging pile on a steep plateau side slope, which comprises the following steps: step 1: construction preparation; and 2, step: a personnel access scaffold is erected and extends from the bottom of the side slope to the top of the side slope to the construction position of the manual hole digging pile; and step 3: the electric crawling ladder is installed; and 4, step 4: erecting an operation platform of the manual hole digging pile; and 5: mounting a chute; step 6: setting a locking notch; and 7: manually digging holes and arranging a protective wall; and step 8: hole forming inspection; and step 9: installing a steel reinforcement cage in the hole; step 10: pouring concrete; step 11: and (5) pile forming detection. The invention can provide a transportation channel for personnel, materials, construction waste and muck, greatly improves the construction efficiency of the plateau steep slope manual hole digging pile, and simultaneously improves the construction safety of the plateau steep slope manual hole digging pile through the protective structure.
Description
Technical Field
The invention relates to a construction method of a manual hole digging pile, in particular to a construction method of a manual hole digging pile on a steep plateau slope.
Background
The manual hole digging pile technology is widely applied because of its unique advantages, which are shown as follows: (1) the construction equipment is simple; in the construction of the manual hole digging pile, the used mechanical equipment is simple and low in cost, such as a generator, a stirrer, an air compressor and the like. (2) The pollution to the environment is small; the manual hole digging pile construction does not use slurry, and the noise generated during the construction is relatively small. (3) The construction quality is high; compared with a cast-in-situ bored pile, the manual bored pile can observe the stratum structure during excavation and detect the bearing capacity of the foundation; in addition, as no slurry exists in the pile hole, the slurry cannot enter the concrete. (4) The construction cost is reduced; the common form of the manual hole digging pile is an end bearing pile, the reinforcement ratio is low, the labor cost is low, and the construction cost of the whole process is lower.
However, the workload and the working strength of the manual hole digging pile are relatively large, the construction condition is poor, particularly, the construction of the manual hole digging pile at a high slope part in a plateau area has the characteristics of high altitude, steep slope (the slope is more than 60 degrees), serious rock weathering and the like, and the difficulties of low air pressure, low oxygen content, serious physical strength consumption and great danger of people for getting on and off the high slope, difficult mechanical material transportation, fragile environment, inconvenient slag disposal, more developed stratum rock joint cracks, possible poisonous and harmful gas in the underground and the like exist, so that the construction safety and the construction efficiency of the manual hole digging pile are greatly influenced.
Disclosure of Invention
The invention aims to provide a construction method of a manual hole digging pile on a steep side slope in a plateau, which can provide a transportation channel for personnel, materials, construction waste and muck, greatly improve the construction efficiency of the manual hole digging pile on the steep side slope in the plateau, and simultaneously improve the construction safety of the manual hole digging pile on the steep side slope in the plateau through a protective structure.
The invention is realized in the following way:
a construction method of a manual hole digging pile on a steep plateau side slope comprises the following steps:
step 1: construction preparation;
step 2: erecting a personnel access scaffold, wherein the personnel access scaffold extends from the bottom of the side slope to the top of the side slope to the construction position of the manual hole digging pile;
and 3, step 3: the electric crawling ladder is installed;
and 4, step 4: erecting an operation platform of the manual hole digging pile;
and 5: mounting a chute;
step 6: setting a locking notch;
and 7: manually digging holes and arranging a protective wall;
and step 8: pore-forming inspection;
and step 9: installing a steel reinforcement cage in the hole;
step 10: pouring concrete;
step 11: and (5) pile forming detection.
The step 1 comprises the following sub-steps:
step 1.1: mastering the geological condition of a construction site, technical parameters of construction equipment and quality inspection results of raw materials;
step 1.2: and cleaning the steep side slope of the plateau in the required construction area, including removing weeds and broken rocks, and measuring and lofting the positions of a personnel passage, an electric ladder and an orifice.
The step 2 comprises the following sub-steps:
step 2.1: pouring a foundation in the erection area of the personnel access scaffold;
step 2.2: drilling anchor rod holes in the foundation and the mountain, inserting anchor rods into the anchor rod holes, and arranging the anchor rods in double rows on two sides of the chute;
step 2.3: the upper end of the anchor rod is connected with vertical rods, so that the vertical rods are arranged in two rows on two sides of the chute, a personnel channel is formed between the two rows of the vertical rods, and the upper ends of the vertical rods extend upwards;
step 2.4: transverse rods are transversely and vertically lapped on the inner side of each row of upright rods, and a plurality of transverse rods are arranged along the height direction of the upright rods in a multi-channel manner, so that the transverse rods are arranged at two sides of the personnel channel in a multi-channel manner, and safety nets are hung on the transverse rods arranged in the multi-channel manner;
step 2.5: longitudinal rods are longitudinally arranged between the two rows of upright rods, two ends of one part of the longitudinal rods are respectively connected with the connecting nodes of the two rows of upright rods and the transverse rods, and two ends of the other part of the longitudinal rods are respectively connected with the midspan of the two rows of transverse rods;
step 2.6: a cross brace is arranged among the cross rods, the longitudinal rods and the vertical rods which are positioned in the same vertical plane, and an inclined brace is arranged between the outer-row vertical rods far away from the personnel passage and the mountain body;
step 2.7: the pedal plates are laid in the personnel passage, the pedal plates are horizontally erected on the transverse rods and the longitudinal rods and are fixedly connected with the vertical rods, and the edge of each pedal plate is provided with an anti-slip strip.
The step 3 comprises the following sub-steps:
step 3.1: drilling anchor rod holes in the foundation and the mountain, and inserting anchor rods into the anchor rod holes;
step 3.2: the walking track framework of the electric crawling ladder is fixedly arranged on the anchor rod;
step 3.3: inclined struts are arranged on two sides of the walking track framework, and a ladder climbing structure is arranged on the walking track framework.
The step 4 comprises the following sub-steps:
step 4.1: leveling the site of the construction position of the manual hole digging pile;
and 4.2: laying a lengthening plate on a personnel access scaffold at the outer edge of the field to be used as an operation platform of the manual hole digging pile;
step 4.3: an annular drainage ditch is arranged above the operation platform, a first platform protective net is arranged above the annular drainage ditch, and a second platform protective net is arranged below the operation platform;
step 4.4: and a monitoring system is arranged at the top of the side slope.
The step 5 comprises the following sub-steps:
step 5.1: a plurality of fixing laths extend to the construction position of the manual hole digging pile from the bottom to the top of the side slope;
step 5.2: the chute is arranged on a plurality of fixed battens, and the longitudinal section of the chute is of a trapezoidal structure with an opening at the top and a wide top and a narrow bottom.
The step 6 comprises the following sub-steps:
step 6.1: mixing and pouring concrete on site, and constructing a locking opening, wherein the height of the locking opening is higher than that of an orifice of the manual hole digging pile;
step 6.2: annular hardening is carried out within the range of 1m of the periphery of the lock opening, and a drainage ditch is arranged outside the lock opening.
In the step 7, a pile separation excavation mode is adopted, and excavation can be continued only after the concrete of the adjacent manual hole digging piles reaches 50% of the design strength; each manual hole digging pile is excavated in a sectional excavation mode, each section of excavation is not more than 2m, and a retaining wall is timely arranged in a mode of excavating one section and supporting one section, and the soil and stone change part and the sliding surface part cannot be sectioned; and continuously inputting oxygen to the working face in the excavation process, and simultaneously detecting toxic and harmful gases in real time in the excavation process.
In the step 7, in the manual hole digging operation process, a bucket is adopted to remove slag and is transported to the slope bottom of the side slope through a chute, and the volume of slag filled in the bucket is not more than 70%; and the soil layer section is excavated by adopting an air pick to be matched with a shovel, and when the strongly weathered rock stratum is limited by the surrounding environment, a hole is formed by adopting a manual water drilling construction process.
The construction process of the artificial water drill construction process comprises the following steps:
a. drilling surrounding rocks: arranging core taking points along the wall of the pile foundation hole, enabling a core taking circle to be tangent to the inner wall of the locking port, sequentially drilling peripheral cores, and forming an annular blank surface on the periphery of a pile core body rock after the peripheral cores are taken;
b. drilling out middle rocks: drilling a core along the radius of the pile, and equally dividing a pile core rock mass into three equal parts, wherein each part accounts for 1/3 of the pile core rock mass;
c. drilling by using an electric hand drill: drilling holes in the pile core rock mass by using an electric hand drill, and dividing the pile rock mass into 4-6 equal parts;
d. inserting a steel wedge, and striking the steel wedge to split the rock: a steel wedge is drilled in a hole drilled by an electric hand drill along the radial direction of a pile foundation, a large hammer is used for hammering the steel wedge to enable a rock body to obtain a horizontal impact force, the rock is pulled and cracked along a plumb bob surface under the action of the horizontal impact force, and the bottom of the rock body can be horizontally sheared and cracked; and sequentially splitting the rock mass until the pile core rock mass of the layer is completely fractured.
Compared with the prior art, the invention has the following beneficial effects:
1. the personnel access scaffold is provided with the personnel access scaffold, the personnel access scaffold can provide personnel access, the installation and construction of an electric ladder stand, a chute, an operation platform, a locking port and the like are facilitated, the efficiency of construction operation is improved, the personnel access scaffold is composed of the vertical rods, the transverse rods, the longitudinal rods, the cross braces and the inclined braces, the structural strength is high, the bearing performance is high, and meanwhile the personnel construction safety of the personnel access scaffold is guaranteed through the arrangement of the safety net.
2. The electric crawling ladder is arranged, so that the transportation of personnel, materials, construction waste materials and the like can be provided, the passing efficiency and safety of the personnel and the materials are greatly improved, the construction efficiency of manual hole digging piles on steep slopes on plateaus is improved, and the electric crawling ladder is simple and convenient to operate, economical, environment-friendly, high in practicability and high in safety.
3. According to the invention, the fore shaft, the first platform protective net and the second platform protective net are arranged, the fore shaft and the outer side drainage ditch can prevent sundries and surface water from entering the pile hole to damage personnel in the hole, the first platform protective net and the second platform protective net can form protection above and below the operation platform, prevent personnel from falling or falling rocks from damaging the personnel, and effectively improve the construction safety of the pile for manually digging the hole on the steep slope in the plateau.
Drawings
FIG. 1 is a flow chart of the construction method of the manual hole digging pile on the steep plateau side slope.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
Referring to the attached figure 1, the construction method of the manual hole digging pile on the steep plateau side slope comprises the following steps:
step 1: and (5) preparing construction.
The step 1 comprises the following sub-steps:
step 1.1: and (4) mastering the geological condition of a construction site, technical parameters of construction equipment, a quality inspection result of raw materials and the like.
Step 1.2: cleaning the steep side slope (hereinafter referred to as side slope) of the plateau in the required construction area, including removing weeds, broken rocks and the like, and measuring and lofting the positions of personnel passages, electric crawling ladders and orifices.
And 2, step: and (4) erecting a personnel access scaffold, wherein the personnel access scaffold extends to the construction position of the manual hole digging pile from the bottom of the side slope to the top of the side slope. The personnel access scaffold can be used for mounting, personnel and materials of the electric ladder stand.
The step 2 comprises the following sub-steps:
step 2.1: and pouring a foundation in the erection area of the personnel access scaffold. Preferably, C30 concrete is poured on the ground, and the pouring thickness is 30cm, so that the scaffold for the personnel access can be reliably supported and the load can be transferred.
Step 2.2: and (3) drilling anchor rod holes in the foundation and the mountain, inserting anchor rods in the anchor rod holes, and arranging the anchor rods in double rows on two sides of the chute. Preferably, the anchor rod hole is 2.5m long and 42mm in diameter, the anchor rod hole is filled with the anchoring agent, the lower end of the anchor rod with the diameter of 25mm is inserted into the anchor rod hole through the anchoring agent, and the anchor rod hole can be adjusted according to actual construction requirements.
Step 2.3: the upper end of the anchor rod is connected with the vertical rods, so that the vertical rods are arranged on two sides of the chute in a double row mode, a personnel channel is formed between the double rows of the vertical rods, and the upper ends of the vertical rods extend upwards. Preferably, the vertical rod is made of a steel pipe with the diameter of 48mm, and the welding length of the vertical rod and the anchor rod is not less than 25 cm. The vertical rods are 1.5m higher than the design height of the whole structure. The vertical distance of the vertical rods arranged in double rows is 1.2m, the transverse distance is 0.9m, and the vertical rods can be adjusted according to actual construction requirements. When the vertical rods are not long enough and need to be spliced, the butt joint fasteners special for the steel pipes are adopted to connect the two vertical rods, and the reliability of the splicing nodes of the vertical rods is ensured.
Step 2.4: at the equal horizontal perpendicular overlap joint horizontal pole of the inboard of each row pole setting (use the pole setting to be inboard towards one side of personnel's passageway, the one side of keeping away from personnel's passageway is the outside), many horizontal poles are arranged along the direction of height multichannel of pole setting, make the horizontal pole all be the multichannel and arrange in the both sides of personnel's passageway to hang the safety net on the horizontal pole that the multichannel was arranged. Preferably, the upright posts and the cross rods can be connected by right-angle fasteners, the multi-row arrangement distance of the cross rods along the height direction is 1.5-1.8m, and the adjustment can also be carried out according to the actual construction requirements.
Step 2.5: longitudinal rods are longitudinally arranged between the double rows of upright rods, two ends of one part of the longitudinal rods are respectively connected to the connecting nodes of the double rows of upright rods and the transverse rods, and two ends of the other part of the longitudinal rods are respectively connected to the midspan parts of the two rows of transverse rods. Double-row structures are connected into a whole through the longitudinal rods, and the structural stability and the bearing capacity of the whole scaffold are improved.
Step 2.6: the cross braces are arranged among the cross rods, the longitudinal rods and the vertical rods which are positioned in the same vertical plane, and the inclined braces are arranged between the outer row of vertical rods far away from the personnel passage and the mountain. The overall stability and the bearing capacity of the whole scaffold structure are further improved through the cross braces and the inclined braces. Preferably, the cross brace strides every 5 and sets up one, and the bracing sets up one every 3m, also can adjust according to actual support load demand.
Step 2.7: the pedal plates are laid in the personnel passage, the pedal plates are horizontally erected on the transverse rods and the longitudinal rods and are fixedly connected with the vertical rods, and the edge of each pedal plate is provided with an anti-slip strip. Preferably, the pedal plate can adopt a laminated plate with the thickness of 1cm, the laminated plate is fixedly connected with the upright rod through screws, and the number, the size and the arrangement position of the pedal plate can be adjusted according to the actual construction requirement so as to meet the requirements of standing and up-and-down of personnel.
And step 3: the electric ladder stand is installed. The electric ladder stand can be used for people to go up and down and for transporting materials and construction waste.
The step 3 comprises the following sub-steps:
step 3.1: and (4) drilling anchor rod holes in the foundation and the mountain, and inserting anchor rods into the anchor rod holes. Preferably, but electric cat ladder interval 2m parallel arrangement is at personnel's passageway scaffold's side, and the construction mode of stock hole and stock is the same with the construction mode in step 2 in step 3, and this is no longer repeated here.
Step 3.2: the walking track skeleton of electronic cat ladder is fixed mounting on the stock. Preferably, the walking track skeleton can adopt modes such as welding to fix with the stock, ensures electronic cat ladder installation stability.
Step 3.3: inclined struts are arranged on two sides of the walking rail framework, and a ladder stand structure is arranged on the walking rail framework. Preferably, one inclined strut is arranged at intervals of 2 m.
And 4, step 4: and (4) erecting an operation platform of the manual hole digging pile.
The step 4 comprises the following sub-steps:
step 4.1: and leveling the construction position of the manual hole digging pile.
And 4.2: and (3) paving a lengthening plate on a personnel access scaffold at the outer edge of the field to be used as an operation platform of the manual hole digging pile. Preferably, the extension board can be a laminated board with the thickness of 1cm, and the extension board and the pedal plate are connected and fixed through bolts, iron wires and the like.
Step 4.3: an annular drainage ditch is arranged above the operation platform to prevent rainwater from washing and causing slope instability, a first platform protective net is arranged above the annular drainage ditch, and a second platform protective net is arranged below the operation platform. Preferably, the annular drainage ditch is positioned 2m above the operation platform, and the first platform protective net is positioned 4m above the operation platform; the second platform protective net is positioned 1m below the working platform. The first platform protective net and the second platform protective net can adopt flexible protective nets, the first platform protective net is used for preventing falling rocks from injuring people, and the second platform protective net is used for preventing people from falling.
Step 4.4: the top of the side slope is provided with a monitoring system, and a high-side slope solar automatic monitoring system for monitoring the settlement of the side slope in the prior art can be adopted, so that the effective early warning function is played for landslide disasters, settlement and the like caused by construction vibration of the open excavation surface and the like, and casualties are avoided.
And 5: and (6) chute installation.
The step 5 comprises the following sub-steps:
step 5.1: the mountain body between two rows of personnel's passageway scaffolds sets up fixed laths, and a plurality of fixed laths extend to the construction position department of artifical bored pile from the slope bottom to the top. Preferably, the fixing plate strips are arranged one at every interval of 1m, and the fixing plate strips are inserted into the ground by 80mm to ensure the installation reliability.
Step 5.2: the chute is arranged on a plurality of fixed battens, and the longitudinal section of the chute is of a trapezoidal structure with an opening at the top and a wide top and a narrow bottom. Preferably, the chute can be made of laminated plates, the size of the bottom plate of the chute is 600 × 1000 × 10mm, the size of the inclined plates at two sides of the chute is 300 × 1000 × 10mm, and the included angle between each inclined plate and the bottom plate is 120 degrees.
Step 6: the locking notch is arranged.
The step 6 comprises the following sub-steps:
step 6.1: and mixing and pouring concrete on site, and constructing a lock opening, wherein the height of the lock opening is higher than the elevation of an orifice of the manual hole digging pile. Preferably, the locking notch is formed by pouring C30 concrete, the elevation of the locking notch is not less than 30cm higher than the elevation of the hole opening of the manual dug pile, and the thickness of the locking notch is more than 30 cm. The locking notch before hole digging is set to be the conventional operation of manual hole digging, the locking notch is constructed by the prior art, and the description is omitted here.
Step 6.2: annular hardening is carried out within the range of 1m of the periphery of the lock opening, and a drainage ditch is arranged outside the lock opening. The locking notch prevents sundries from falling into the hole through the hole opening of the manual hole digging pile to hurt people, and the drainage ditch prevents surface water from flowing into the hole of the manual hole digging pile.
And 7: and (5) manually digging holes and arranging a protective wall.
In the step 7, a pile separation excavation mode is adopted, and excavation can be continued only after the concrete of the adjacent manual hole digging piles reaches 50% of the design strength; each manual hole digging pile is excavated in a sectional excavation mode, each section of the pile is excavated to be less than 2m, and a retaining wall is arranged in time in a mode of excavating one section to support one section, and the pile cannot be sectioned at the earth and stone change position and the sliding surface position; oxygen is continuously input to the working face in the excavation process, and meanwhile, toxic and harmful gas detection is carried out in real time in the excavation process. Preferably, concrete required by the retaining wall is mixed on site, the next section of excavation can be carried out after the last section of retaining wall concrete is finally set, and the retaining wall template can be detached after being poured for 24 hours.
In the step 7, in the manual hole digging operation process, the bucket is adopted to discharge slag and is transported to the slope bottom of the side slope through the chute, the volume of slag filled in the bucket is not more than 70%, and the excessive loading is strictly prohibited, so that the slag is conveniently and intensively transported to a slag disposal site, and the slag is prevented from being randomly stacked or discarded on the construction site. And the soil layer section is excavated by adopting an air pick to be matched with a shovel, and when the strongly weathered rock stratum is limited by the surrounding environment, a hole is formed by adopting a manual water drilling construction process.
The construction process of the artificial water drill construction technology comprises the following steps:
a. drilling surrounding rocks: arrange along the pile foundation pore wall and get the core point, get the core diameter and be 150mm, get the core circle tangent with the fore shaft inner wall, get the distance between the core circle and be 130 mm. And sequentially drilling peripheral rock cores, wherein the height of the taken rock cores is about 500mm, and the periphery of the pile core body rock forms an annular face surface after the peripheral rock cores are taken.
b. Drilling out middle rocks: and drilling a core along the radius of the pile, and equally dividing the pile core rock mass into three equal parts, wherein each part accounts for 1/3 of the pile core rock mass so as to facilitate the rock mass to break.
c. Drilling by using an electric hand drill: and drilling holes on the pile core rock mass by using an electric hand drill, and dividing the pile rock mass into 4-6 equal parts.
d. Inserting a steel wedge, and striking the steel wedge to split the rock: a steel wedge is drilled in a hole drilled by an electric hand drill along the radial direction of a pile foundation, a sledge hammer is used for hammering the steel wedge to enable a rock body to obtain a horizontal impact force, the rock is pulled and cracked along a plumb bob surface under the action of the horizontal impact force, and the bottom of the rock body can be horizontally sheared and cracked. And sequentially splitting the rock mass until the pile core rock mass of the layer is completely fractured.
And 8: and (4) hole forming inspection, wherein the inspection contents mainly comprise the central position, the verticality, the pile bottom mark and the like of the pile hole, and the inspection standard can be determined according to design requirements, industrial requirements, standard requirements and the like.
And step 9: and installing a reinforcement cage in the hole.
The method comprises the steps of adopting a reinforcement processing field to intensively process and distribute semi-finished reinforcements, binding and forming the reinforcements in holes on the field, binding a metal pipe with the diameter of 40mm at each of main reinforcements at four corners, wherein the reinforcement processing and connection are in accordance with technical regulations for railway concrete engineering construction (Q/CR 9207 plus 2017), and the embedding quantity, size and the like of sound measurement pipes are in accordance with technical regulations for railway engineering pile foundation detection (TB10218-2019) (J808-2019).
Step 10: and (5) pouring concrete.
The concrete is intensively stirred and supplied by a mixing station, and the cast-in-place mode adopts a cylinder stringing and manual vibrating mode.
Step 11: and (5) pile forming detection.
Pile formation detection can be carried out by adopting sound wave transmission, and the detection standard is executed according to technical specifications for detecting the pile foundation of railway engineering (TB10218-2019) (J808-2019).
The present invention is not limited to the above embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the present invention should be construed as being included in the present invention.
Claims (10)
1. A construction method of a manual hole digging pile on a steep plateau slope is characterized by comprising the following steps: the method comprises the following steps:
step 1: preparing for construction;
and 2, step: erecting a personnel access scaffold, wherein the personnel access scaffold extends from the bottom of the side slope to the top of the side slope to the construction position of the manual hole digging pile;
and step 3: the electric crawling ladder is installed;
and 4, step 4: erecting an operation platform of the manual hole digging pile;
and 5: chute installation;
and 6: setting a locking notch;
and 7: manually digging holes and arranging a protective wall;
and 8: pore-forming inspection;
and step 9: installing a steel reinforcement cage in the hole;
step 10: pouring concrete;
step 11: and (5) pile forming detection.
2. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1, wherein the method comprises the following steps: the step 1 comprises the following sub-steps:
step 1.1: grasping geological conditions of a construction site, technical parameters of construction equipment and quality inspection results of raw materials;
step 1.2: and cleaning the steep side slope of the plateau in the required construction area, including removing weeds and broken rocks, and measuring and lofting the positions of a personnel passage, an electric ladder and an orifice.
3. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1, wherein the method comprises the following steps: the step 2 comprises the following sub-steps:
step 2.1: pouring a foundation in the erection area of the personnel access scaffold;
step 2.2: drilling anchor rod holes in the foundation and the mountain, inserting anchor rods in the anchor rod holes, and arranging the anchor rods on two sides of the chute in a double-row manner;
step 2.3: the upper end of the anchor rod is connected with vertical rods, so that the vertical rods are arranged in double rows on two sides of the chute, a personnel channel is formed between the double rows of the vertical rods, and the upper ends of the vertical rods extend upwards;
step 2.4: transverse rods are transversely and vertically lapped on the inner side of each row of upright rods, and a plurality of transverse rods are arranged along the height direction of the upright rods in a multi-channel manner, so that the transverse rods are arranged at two sides of the personnel channel in a multi-channel manner, and safety nets are hung on the transverse rods arranged in the multi-channel manner;
step 2.5: longitudinal rods are longitudinally arranged between the two rows of upright rods, two ends of one part of longitudinal rods are respectively connected with the connecting nodes of the two rows of upright rods and the transverse rods, and two ends of the other part of longitudinal rods are respectively connected with the midspan parts of the two rows of transverse rods;
step 2.6: a cross brace is arranged among the cross rods, the longitudinal rods and the upright rods which are positioned in the same vertical plane, and an inclined brace is arranged between the outer row upright rods far away from the personnel passage and the mountain body;
step 2.7: the foot boards are laid in the personnel passage, the foot boards are horizontally erected on the transverse rods and the longitudinal rods and are fixedly connected with the vertical rods, and the edges of the foot boards are provided with anti-slip strips.
4. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1, wherein the method comprises the following steps: the step 3 comprises the following sub-steps:
step 3.1: drilling anchor rod holes in the foundation and the mountain, and inserting anchor rods into the anchor rod holes;
step 3.2: the walking track framework of the electric crawling ladder is fixedly arranged on the anchor rod;
step 3.3: inclined struts are arranged on two sides of the walking track framework, and a ladder climbing structure is arranged on the walking track framework.
5. The construction method of the manual hole digging pile on the steep plateau side slope as claimed in claim 1, characterized in that: the step 4 comprises the following sub-steps:
step 4.1: leveling a field of a construction position of the manual hole digging pile;
and 4.2: laying a lengthening plate on a personnel access scaffold at the outer edge of the field to be used as an operation platform of the manual hole digging pile;
step 4.3: an annular drainage ditch is arranged above the operation platform, a first platform protective net is arranged above the annular drainage ditch, and a second platform protective net is arranged below the operation platform;
step 4.4: and a monitoring system is arranged at the top of the side slope.
6. The construction method of the manual hole digging pile on the steep plateau side slope as claimed in claim 1, characterized in that: the step 5 comprises the following sub-steps:
step 5.1: a plurality of fixing laths extend to the construction position of the manual hole digging pile from the bottom to the top of the side slope;
step 5.2: the chute is arranged on a plurality of fixed laths, and the longitudinal section of the chute is of a trapezoidal structure with an opening at the top and a wide top and a narrow bottom.
7. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1, wherein the method comprises the following steps: the step 6 comprises the following sub-steps:
step 6.1: mixing and pouring concrete on site, and constructing a locking opening, wherein the height of the locking opening is higher than that of an orifice of the manual hole digging pile;
step 6.2: annular hardening is carried out within the range of 1m of the periphery of the lock opening, and a drainage ditch is arranged outside the lock opening.
8. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1, wherein the method comprises the following steps: in the step 7, a pile separation excavation mode is adopted, and excavation can be continued only after the concrete of the adjacent manual hole digging piles reaches 50% of the design strength; each manual hole digging pile is excavated in a sectional excavation mode, each section of excavation is not more than 2m, and a retaining wall is timely arranged in a mode of excavating one section and supporting one section, and the soil and stone change part and the sliding surface part cannot be sectioned; and continuously inputting oxygen to the working face in the excavation process, and simultaneously detecting toxic and harmful gases in real time in the excavation process.
9. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 1 or 8, wherein the construction method comprises the following steps: in the step 7, in the manual hole digging operation process, a bucket is used for deslagging and is conveyed to the slope bottom of a side slope through a chute, and the volume of slag filled in the bucket is not more than 70%; and the soil layer is excavated by adopting an air pick to be matched with a shovel, and when the strongly weathered rock stratum is limited by the surrounding environment, the hole is formed by adopting a manual water drilling construction process.
10. The construction method of the artificial dug pile on the steep plateau side slope as claimed in claim 9, wherein the construction method comprises the following steps: the construction process of the artificial water drill construction process comprises the following steps:
a. drilling surrounding rocks: arranging core taking points along the wall of the pile foundation, wherein the core taking circle is tangent to the inner wall of the locking opening, sequentially drilling peripheral cores, and forming an annular blank surface at the periphery of a pile core body after the peripheral cores are taken;
b. drilling out middle rocks: drilling a core along the radius of the pile, and equally dividing the pile core rock mass into three equal parts, wherein each part accounts for 1/3 of the pile core rock mass;
c. drilling by using an electric hand drill: drilling holes in the pile core rock mass by using an electric hand drill, and dividing the pile rock mass into 4-6 equal parts;
d. inserting a steel wedge, beating the steel wedge to split the rock: a steel wedge is drilled into a hole drilled by an electric hand drill along the radial direction of the pile foundation, a hammer is used for hammering the steel wedge to enable a rock body to obtain a horizontal impact force, the rock is pulled and cracked along a plumb bob surface under the action of the horizontal impact force, and the bottom of the rock is horizontally sheared and cracked; and sequentially splitting the rock mass until the pile core rock mass of the layer is completely fractured.
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| CN202210555052.XA CN114775585A (en) | 2022-05-20 | 2022-05-20 | Construction method of manual hole digging pile on plateau steep side slope |
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| CN202210555052.XA CN114775585A (en) | 2022-05-20 | 2022-05-20 | Construction method of manual hole digging pile on plateau steep side slope |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108487854A (en) * | 2018-03-27 | 2018-09-04 | 青岛理工大学 | It is a kind of to be used for the manned multi-functional climbing device with instrument and equipment of outdoor high gradient slope |
| CN112982381A (en) * | 2021-02-25 | 2021-06-18 | 中铁二十五局集团第五工程有限公司 | Construction method of slide-resistant pile |
| CN114182935A (en) * | 2021-12-27 | 2022-03-15 | 中国铁道科学研究院集团有限公司 | Construction method of integral scaffold for ultra-high steep rock slope |
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2022
- 2022-05-20 CN CN202210555052.XA patent/CN114775585A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108487854A (en) * | 2018-03-27 | 2018-09-04 | 青岛理工大学 | It is a kind of to be used for the manned multi-functional climbing device with instrument and equipment of outdoor high gradient slope |
| CN112982381A (en) * | 2021-02-25 | 2021-06-18 | 中铁二十五局集团第五工程有限公司 | Construction method of slide-resistant pile |
| CN114182935A (en) * | 2021-12-27 | 2022-03-15 | 中国铁道科学研究院集团有限公司 | Construction method of integral scaffold for ultra-high steep rock slope |
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Application publication date: 20220722 |