CN111501832B - Two-in-one underground pipe gallery construction method and two-in-one underground pipe gallery structure - Google Patents
Two-in-one underground pipe gallery construction method and two-in-one underground pipe gallery structure Download PDFInfo
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- CN111501832B CN111501832B CN202010465256.5A CN202010465256A CN111501832B CN 111501832 B CN111501832 B CN 111501832B CN 202010465256 A CN202010465256 A CN 202010465256A CN 111501832 B CN111501832 B CN 111501832B
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- 238000010276 construction Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 239000011150 reinforced concrete Substances 0.000 claims description 107
- 229910000831 Steel Inorganic materials 0.000 claims description 66
- 239000010959 steel Substances 0.000 claims description 66
- 239000010410 layer Substances 0.000 claims description 45
- 239000002689 soil Substances 0.000 claims description 31
- 239000004567 concrete Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 13
- 239000004575 stone Substances 0.000 claims description 13
- 239000002344 surface layer Substances 0.000 claims description 13
- 239000007787 solid Substances 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 8
- 238000009412 basement excavation Methods 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 5
- 229910052602 gypsum Inorganic materials 0.000 claims description 4
- 239000010440 gypsum Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000004078 waterproofing Methods 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000013016 damping Methods 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000005303 weighing Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 210000003205 muscle 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
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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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
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/08—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against transmission of vibrations or movements in the foundation soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/10—Prefabricated parts, e.g. composite sheet piles made of concrete or reinforced concrete
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
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- Agronomy & Crop Science (AREA)
- Soil Sciences (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a two-wall integrated underground pipe gallery construction method, which comprises the following steps: s1, manufacturing a prefabricated part; s2, manufacturing an outer wall of the underground pipe gallery; s4, manufacturing an underground pipe gallery floor; s5: and (5) constructing the interior of the underground pipe gallery. The invention provides a two-wall-in-one underground pipe gallery construction method, which solves the problem of resource waste caused by the fact that two walls are not integrated in the existing underground pipe gallery construction process.
Description
Technical Field
The invention relates to the field of constructional engineering, in particular to a two-wall-in-one underground pipe gallery construction method and a two-wall-in-one underground pipe gallery structure.
Background
Before excavation of a foundation pit of an underground space, a building enclosure structure (underground continuous wall) is generally designed and constructed around the foundation pit, the underground continuous wall is provided with a structure formed by cast-in-place and an assembled underground continuous wall, the existing underground continuous cavity can only be used as a water retaining and retaining wall during excavation of the foundation pit, and after the excavation of the foundation pit is completed, a weighing wall needs to be cast in the foundation pit to support an above-ground building, namely two walls need to be constructed on a wall body part in an existing building such as a pipe gallery, and integration of the two walls is not realized, so that resource waste is caused.
Disclosure of Invention
The invention provides a two-wall-in-one underground pipe gallery construction method, which solves the problem of resource waste caused by the fact that two walls are not integrated in the existing underground pipe gallery construction process.
The technical problem is solved by the following technical scheme: a two-in-one-wall underground pipe gallery construction method is characterized by comprising the following steps:
s1, manufacturing a prefabricated part: manufacturing a reinforced concrete prefabricated sheet pile and a reinforced concrete prefabricated top plate;
s2, manufacturing the outer wall of the underground pipe gallery: forming two grooves for accommodating two side walls of the pipe gallery on the foundation, and injecting waterproof solidified soil slurry into the grooves, wherein the waterproof solidified soil slurry comprises water and solids mixed in the water, the solids are soil and a soil hardening agent, the mass of the soil hardening agent is 15-30% of the mass of the soil, and the mass of the water is 1-2 times of the mass of the solids; inserting a plurality of reinforced concrete prefabricated sheet piles into waterproof slurry in a manner of being distributed along the extending direction of the groove and splicing the plurality of reinforced concrete prefabricated sheet piles together, wherein the waterproof solidified soil slurry is solidified to form a wall surface layer which completely wraps the reinforced concrete prefabricated sheet piles and has a waterproof effect, the wall surface layer extends into a gap between adjacent reinforced concrete prefabricated sheet piles to form a waterproof bonding rib, the wall surface layer and the reinforced concrete prefabricated sheet piles jointly form an outer wall of a pipe gallery, and the outer wall is used as a waterproof retaining wall during foundation pit excavation and a bearing wall for supporting a building above the underground pipe gallery;
s3, manufacturing a floor slab of the underground pipe gallery: connecting two ends of the reinforced concrete prefabricated top plate to the outer walls in the two grooves, paving a waterproof coiled material on the surface of the reinforced concrete prefabricated top plate to form a roof waterproof layer, and pouring a fine stone concrete layer on the roof waterproof layer;
s4, manufacturing the underground pipe gallery floor: digging away soil between the outer wall of the underground pipe gallery and the floor of the underground pipe gallery to form a foundation pit, and building an underground pipe gallery floor at the bottom of the foundation pit;
s5: inside construction of underground pipe gallery: and pouring a lining wall on the inner surface of the outer wall, wherein the lining wall is only used as an inner decorative surface of a foundation pit, namely the underground pipe gallery. The waterproof retaining wall of the foundation pit and the bearing wall of the ground building are integrated, and resources are saved. Good waterproof effect and high strength.
Preferably, a reinforced concrete precast slab pile portion flange is arranged on one side, away from the inner space of the underground pipe gallery, of the upper end of the reinforced concrete precast slab pile, section steel, the upper end of which extends out of the upper end face of the reinforced concrete precast slab pile, is pre-embedded in the reinforced concrete precast slab pile, connecting holes are formed in two ends of the reinforced concrete precast top plate, the upper end of the section steel is arranged in the connecting holes in a penetrating mode, and the reinforced concrete precast slab pile portion flange forms a formwork for pouring a fine stone concrete layer in the step S3. The connection reliability between the reinforced concrete top plate and the outer wall can be improved, and the convenience in pouring the fine stone concrete layer can be improved.
Preferably, the section steel is sleeved with a sleeve web, the upper end of the sleeve web is provided with a flange pressed on the reinforced concrete prefabricated top plate, the sleeve web and the section steel are fixed together through a bolt and a nut in a matching mode, the flange, the reinforced concrete prefabricated top plate and the reinforced concrete prefabricated sheet pile are fixed together through a bolt and a nut in a matching mode, and the sleeve web and the flange are both poured in the fine aggregate concrete layer. The underground pipe gallery wall and the floor can be reliably fixed together by reliably ensuring that all components forming the underground pipe gallery wall and the floor are reliably fixed together, so that the earthquake resistance and the settlement resistance are improved.
Preferably, the underground pipe gallery is a widened pipe gallery, the reinforced concrete precast slab pile comprises a first slab pile with a linear structure and a second slab pile with a broken line structure, the second slab pile comprises a first section and a second section, one ends of the first section and the second section are connected together in a broken line mode, profile steel with exposed upper ends is pre-embedded in the upper ends of the first section and the second section, one sides, far away from the inner space of the underground pipe gallery, of the upper ends of the first section and the second section are provided with the reinforced concrete precast slab pile part flanges, and the second slab pile forms a corner of the widened part of the underground pipe gallery. The waterproof butt joint at the corner is conveniently and reliably realized.
The invention also provides a two-in-one underground pipe gallery structure, which comprises two wall bodies arranged oppositely and a floor slab with two ends connected to the upper ends of the two wall bodies, wherein each wall body comprises an outer wall for retaining soil and preventing water and an inner lining wall which is positioned on the inner surface of the outer wall and only serves as an inner facing of the underground pipe gallery, the outer wall comprises a wall body surface layer formed by cast-in-place and an inner layer which is poured in the wall body surface layer and formed by splicing reinforced concrete prefabricated sheet piles, the floor slab comprises a bottom layer, a roof waterproof layer and a fine stone concrete layer, the bottom layer is formed by splicing reinforced concrete prefabricated roof plates, and the waterproof layer and the fine stone concrete layer are sequentially arranged from bottom to top. The outer wall of this technical scheme can be as the wall of weighing of retaining wall and building when foundation ditch excavation simultaneously. The prefabricated member is formed, and the construction period is short.
Preferably, sheet pile part angle steels extending along the vertical direction are pre-embedded in two sides of the reinforced concrete prefabricated sheet piles along the length direction of the wall body, and adjacent reinforced concrete prefabricated sheet piles are hooked together through the sheet pile part angle steels. The mutual support effect between the reinforced concrete prefabricated sheet piles can be strengthened so as to improve the strength of the wall body.
Preferably, sheet pile portion hooking grooves are formed between the sheet pile portion angle steels and the reinforced concrete prefabricated sheet piles, and the opening directions of the sheet pile portion hooking grooves on the two sides of the same reinforced concrete prefabricated sheet pile are opposite. The reinforced concrete precast slab pile can form mutual support in two directions of the width direction of the wall body. The connection reliability is good.
Preferably, a reinforced concrete precast slab pile portion flange is arranged on one side, away from the inner space of the underground pipe gallery, of the upper end of the reinforced concrete precast slab pile, section steel with the upper end extending out of the upper end face of the reinforced concrete precast slab pile is pre-embedded in the reinforced concrete precast slab pile, connecting holes are formed in two ends of the reinforced concrete precast top plate, the upper end of the section steel penetrates through the connecting holes, and the reinforced concrete precast slab pile portion flange forms a template for pouring a fine stone concrete layer. The connection reliability and the convenience in manufacturing a floor cast-in-place layer can be improved.
Preferably, the section steel is sleeved with a sleeve web, the sleeve web is arranged in the connecting hole in a penetrating mode, the sleeve web and the connecting hole are sealed together through a sealing ring, a flange pressed on the reinforced concrete prefabricated top plate is arranged at the upper end of the sleeve web, the sleeve web and the section steel are fixed together through bolts and nuts in a matching mode, the flange, the reinforced concrete prefabricated top plate and the reinforced concrete prefabricated sheet pile are fixed together through bolts and nuts in a matching mode, and the sleeve web and the flange are all poured in the fine aggregate concrete layer. The reliability of the connection between the wall and the floor can be further improved.
Preferably, top plate part angle steels extending along the width direction of the underground pipe gallery are pre-embedded in two sides of the reinforced concrete prefabricated top plates along the length direction of the wall body, the adjacent reinforced concrete prefabricated top plates are hooked together through the top plate part angle steels, the top plate part angle steels on the adjacent reinforced concrete prefabricated top plates are connected together in a sealing mode through expansion water stop bars, and damping bars clamped by the top plate part angle steels on the adjacent reinforced concrete prefabricated top plates are arranged between the top plate part angle steels on the adjacent reinforced concrete prefabricated top plates. The waterproof effect and the antidetonation damping effect of bottom can be improved.
The invention has the following beneficial effects: the wall body of the underground pipe gallery is formed by pouring the reinforced concrete prefabricated sheet piles in the waterproof solidified soil paste with the new formula, so that the wall body can be used as a waterproof retaining wall when a foundation pit is excavated, and can also be used as a weighing wall for weighing a ground building, and the two walls are integrated; the solid layer formed by curing the waterproof cured soil paste has higher strength and waterproof effect than the solid layer formed by curing cement, and the solid layer (namely the outer layer) is wrapped outside the prefabricated sheet pile, so that the waterproof effect is better, and the waterproof effect is realized when a wall body is poured; the connection between the floor and the wall is reliable; the floor has good waterproof and anti-seismic effects.
Drawings
FIG. 1 is a schematic top view of a two-in-one underground pipe gallery according to the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a schematic side view of a two-in-one underground pipe gallery according to the present invention;
FIG. 4 is a schematic top view of a sleeve web;
FIG. 5 is a schematic front view of a sleeve web;
FIG. 6 is a schematic top view of a reinforced concrete precast roof panel;
FIG. 7 is a schematic side view of a reinforced concrete precast roof panel;
fig. 8 is a schematic front view of a first sheet pile;
fig. 9 is a schematic side view of a first sheet pile;
fig. 10 is a schematic top view of a first sheet pile;
fig. 11 is a schematic top view of a second sheet pile.
In the figure: the prefabricated steel concrete slab comprises a prefabricated steel concrete top plate 1, prefabricated steel concrete sheet piles 2, a wall body surface layer 3, a laid wall body part waterproof layer 4, a roof waterproof layer 5, a fine stone concrete layer 6, an underground pipe gallery floor 7, first sheet piles 8, second sheet piles 9, first sections 10, section steels 11, second sections 12, connecting holes 13, section steel part screw holes 14, sheet pile part screw holes 15, sleeve web plates 16, web plate part screw holes 17, top plate part screw holes 18, flanges 19, lining walls 20, reinforced concrete pile part flanges 21, sheet pile part hooking grooves 22, sheet pile part angle steel 23, top plate part angle steel 24, damping strips 25, hoisting holes 26 and flange part bolt holes 27.
Detailed Description
The invention is further described with reference to the following figures and examples.
Referring to fig. 1 to 11, a two-in-one type underground pipe gallery construction method is characterized by comprising the following steps:
s1, manufacturing a prefabricated part: manufacturing a reinforced concrete prefabricated sheet pile and a reinforced concrete prefabricated top plate 1;
s2, manufacturing the outer wall of the underground pipe gallery: two grooves for accommodating two side walls of the pipe gallery are formed in the foundation, waterproof solidified soil slurry is injected into the grooves, the grooves are dug and simultaneously injected with the waterproof solidified soil slurry, the waterproof solidified soil slurry comprises the components of water and solids mixed in the water, the solids are soil and soil hardening agents of a construction site, the mass of the soil hardening agents is 15% -30% of that of the soil, and the mass of the water is 1-2 times of that of the solids. The soil hardening agent is a mixture of cement, steel slag, slag and desulfurized gypsum, and the mass ratio of the cement to the steel slag to the desulfurized gypsum is 5: 2: 2: 1. the mode that a plurality of reinforced concrete prefabricated sheet piles 2 are distributed along the extending direction of the groove is inserted into the waterproof slurry by means of self weight and spliced together, and the waterproof solidified soil slurry is solidified to form a waterproof wall surface layer 3 which completely wraps the reinforced concrete prefabricated sheet piles. The thickness on wall body top layer is more than 10 centimetres, and the wall body top layer extends to and forms waterproof bonding muscle in the clearance between the prefabricated sheet pile of adjacent reinforced concrete, and wall body top layer and the prefabricated sheet pile of reinforced concrete constitute the outer wall of piping lane jointly. The outer wall is used as a waterproof retaining wall when a foundation pit is excavated and also used as a bearing wall for supporting buildings and a pipe gallery floor slab above the underground pipe gallery;
s3, manufacturing a floor slab of the underground pipe gallery: connecting two ends of a reinforced concrete prefabricated top plate to outer walls in two grooves, paving a waterproof coiled material on the surface of the reinforced concrete prefabricated top plate to form a roof waterproof layer 5, pouring a fine stone concrete layer 6 on the roof waterproof layer, and waterproofing gaps between the prefabricated top plate and centrifugal prefabricated plate piles in a grouting mode;
s4, manufacturing the underground pipe gallery floor: digging away soil between the outer wall of the underground pipe gallery and the floor of the underground pipe gallery to form a foundation pit, and building an underground pipe gallery floor 7 at the bottom of the foundation pit;
s5: inside construction of underground pipe gallery: and paving a wall part waterproof layer 4 on the inner surface of the outer wall and pouring a lining wall 20, wherein the lining wall is only used as an inner decorative surface of a foundation pit, namely an underground pipe gallery.
The underground pipe gallery is a widening pipe gallery. The reinforced concrete prefabricated sheet pile comprises a first sheet pile 8 in a linear structure and a second sheet pile 9 in a broken line structure. The second sheet pile comprises a first section 10 and a second section 12. One end of the first section and one end of the second section are connected together in a folding line. The first sheet pile, the first section and the second section are embedded with section steel 11 with the upper ends exposed on the upper end surface of the reinforced concrete precast sheet pile, specifically, I-shaped steel. The part of the section steel exposed out of the concrete precast pile is provided with a plurality of section steel part screw holes 14 surrounding the periphery of the section steel. The non-threaded hole of the section steel is a through hole. And the upper end face of the reinforced concrete prefabricated sheet pile is provided with a sheet pile part screw hole 15. The upper ends of the first sheet pile, the first section and the second section are provided with reinforced concrete precast slab pile part flanges 21 on the sides far away from the inner space of the underground pipe gallery. The second sheet pile forms a corner of the widened part of the underground pipe gallery. And connecting holes 13 with the same shape as the cross section of the steel are arranged at the two ends of the reinforced concrete prefabricated top plate. And a plurality of top plate part screw holes 18 surrounding the connecting holes are also arranged on the reinforced concrete prefabricated top plate. The screw hole of the top plate part is a through hole. The upper end of the section steel is arranged in the connecting hole in a penetrating way. And (4) forming a template for pouring a fine stone concrete layer in the step S3 by using the pile part flange of the reinforced concrete precast slab. The section steel is sleeved with a sleeve web 16. The sleeve web is of a steel structure. The sleeve web is provided with a web screw hole 17. The screw hole of the web part is a through hole. The upper end of the sleeve web plate is provided with a flange 19 pressed on the reinforced concrete prefabricated top plate. The flange is provided with a plurality of flange bolt holes surrounding the sleeve web. The flange screw hole is a through hole. The sleeve web and the section steel are fixed together by a bolt which passes through the screw hole of the web part and the non-screw hole of the section steel and then is matched with a nut. The flange, the reinforced concrete prefabricated top plate and the reinforced concrete prefabricated sheet pile are fixed together through bolts and nuts, specifically, one end of a bolt (such as an expansion bolt) penetrates through a flange part screw hole and a top plate part screw hole in sequence and then is fixed in a sheet pile part screw hole, and one end of the bolt is connected with the nuts for fixing. And the sleeve web and the flange are both poured in the fine aggregate concrete layer.
The invention discloses a two-wall-in-one underground pipe gallery structure, which comprises two wall bodies arranged oppositely and a floor slab with two ends connected to the upper ends of the two wall bodies, wherein each wall body comprises an outer wall for retaining soil and preventing water and a lining wall 20 which is positioned on the inner surface of the outer wall and only serves as an inner decorative surface of an underground pipe gallery. The outer wall comprises a wall surface layer 3 formed by cast-in-place and an inner layer which is poured in the wall surface layer and formed by splicing reinforced concrete prefabricated sheet piles 2. The floor slab comprises a bottom layer, a roof waterproof layer 5 and a cast-in-place fine stone concrete layer 6 which are sequentially arranged from bottom to top. The bottom layer is formed by splicing reinforced concrete prefabricated top plates 1. Sheet pile part angle steel 23 extending along the up-down direction is pre-embedded in both sides of the reinforced concrete prefabricated sheet pile along the length direction of the wall body. And adjacent reinforced concrete prefabricated sheet piles are hooked together through sheet pile part angle steel. The sheet pile part angle steel and the reinforced concrete prefabricated sheet pile form a sheet pile part hooking groove 22, and the opening directions of the sheet pile part hooking grooves on the two sides of the same reinforced concrete prefabricated sheet pile are opposite. The underground pipe gallery of the invention is a widened pipe gallery. The reinforced concrete prefabricated sheet pile comprises a first sheet pile 8 in a linear structure and a second sheet pile 9 in a broken line structure. The second sheet pile comprises a first section 10 and a second section 12. One end of the first section and one end of the second section are connected together in a folding line. The first sheet pile, the first section and the second section are embedded with section steel 11 with the upper ends exposed on the upper end surface of the reinforced concrete precast sheet pile, specifically, I-shaped steel. The part of the section steel exposed out of the concrete precast pile is provided with a plurality of section steel part screw holes 14 surrounding the periphery of the section steel. The non-threaded hole of the section steel is a through hole. And the upper end face of the reinforced concrete prefabricated sheet pile is provided with a sheet pile part screw hole 15. The upper ends of the first sheet pile, the first section and the second section are provided with reinforced concrete precast slab pile part flanges 21 on the sides far away from the inner space of the underground pipe gallery. The second sheet pile forms a corner of the widened part of the underground pipe gallery. And connecting holes 13 with the same shape as the cross section of the steel are arranged at the two ends of the reinforced concrete prefabricated top plate. And a plurality of top plate part screw holes 18 surrounding the connecting holes are also arranged on the reinforced concrete prefabricated top plate. The screw hole of the top plate part is a through hole. The upper end of the section steel is arranged in the connecting hole in a penetrating way. The pile part flange of the reinforced concrete precast slab forms a template for pouring a fine stone concrete layer. The section steel is sleeved with a sleeve web 16. The sleeve web is of a steel structure. The sleeve web is provided with a web screw hole 17. The web screw hole is a through hole. The upper end of the sleeve web plate is provided with a flange 19 pressed on the reinforced concrete prefabricated top plate. The flange is provided with a plurality of flange bolt holes 27 which surround the sleeve web. The flange screw hole is a through hole. The sleeve web and the section steel are fixed together by a bolt which passes through the screw hole of the web part and the non-screw hole of the section steel and then is matched with a nut. The flange, the reinforced concrete prefabricated top plate and the reinforced concrete prefabricated sheet pile are fixed together through bolts and nuts, specifically, one end of a bolt (such as an expansion bolt) penetrates through a flange part screw hole and a top plate part screw hole in sequence and then is fixed in a sheet pile part screw hole, and one end of the bolt is connected with the nuts for fixing. And the sleeve web and the flange are both poured in the fine aggregate concrete layer. And the two sides of the reinforced concrete prefabricated top plate along the length direction of the wall body are pre-embedded with top plate part angle steel 24 extending along the width direction of the underground pipe gallery. And adjacent reinforced concrete prefabricated top plates are hooked together through the top plate part angle steel. And the top plate part angle steels on the adjacent reinforced concrete prefabricated top plates are connected together in a sealing way through the expansion water stop strips. And a damping strip 25 clamped by the top plate part angle steel on the adjacent reinforced concrete prefabricated top plate is arranged between the top plate part angle steel on the adjacent reinforced concrete prefabricated top plate. The reinforced concrete top plate is provided with hoisting holes 26 on the upper and lower surfaces. The hoisting hole is a blind hole.
Claims (1)
1. A two-in-one-wall underground pipe gallery construction method is characterized by comprising the following steps:
s1, manufacturing a prefabricated part: manufacturing a reinforced concrete prefabricated sheet pile and a reinforced concrete prefabricated top plate;
s2, manufacturing the outer wall of the underground pipe gallery: forming two grooves for accommodating two side walls of the pipe gallery on the foundation, and injecting waterproof solidified soil slurry into the grooves, wherein the waterproof solidified soil slurry comprises water and solid matters mixed in the water, the solid matters are soil and soil hardening agents of a construction site, the mass of the soil hardening agents is 15-30% of that of the soil, and the mass of the water is 1-2 times of that of the solid matters; the soil hardening agent is a mixture of cement, steel slag, slag and desulfurized gypsum, and the mass ratio of the cement to the steel slag to the desulfurized gypsum is 5: 2: 2: 1; inserting a plurality of reinforced concrete prefabricated sheet piles into waterproof slurry in a distribution mode along the extending direction of the groove and splicing the plurality of reinforced concrete prefabricated sheet piles together, wherein the waterproof solidified soil slurry is solidified to form a wall surface layer which completely wraps the reinforced concrete prefabricated sheet piles and has a waterproof effect, the thickness of the wall surface layer is more than 10 cm, the wall surface layer extends to gaps between adjacent reinforced concrete prefabricated sheet piles to form waterproof bonding ribs, the wall surface layer and the reinforced concrete prefabricated sheet piles jointly form an outer wall of the pipe gallery, and the outer wall serves as a waterproof retaining wall during excavation of the foundation pit and a bearing wall for supporting a building above the underground pipe gallery;
s3, manufacturing a floor slab of the underground pipe gallery: connecting two ends of a reinforced concrete prefabricated top plate to the outer walls in the two grooves, paving a waterproof coiled material on the surface of the reinforced concrete prefabricated top plate to form a roof waterproof layer, pouring a fine stone concrete layer on the roof waterproof layer, and waterproofing a gap between the prefabricated top plate and a centrifugal prefabricated plate pile in a grouting mode;
s4, manufacturing the underground pipe gallery floor: digging away soil between the outer wall of the underground pipe gallery and the floor of the underground pipe gallery to form a foundation pit, and building an underground pipe gallery floor at the bottom of the foundation pit;
s5: inside construction of underground pipe gallery: paving a wall part waterproof layer on the inner surface of the outer wall and pouring a lining wall, wherein the lining wall is only used as an inner decorative surface of a foundation pit, namely an underground pipe gallery; one side of the upper end of the reinforced concrete prefabricated sheet pile, which is far away from the inner space of the underground pipe gallery, is provided with a reinforced concrete prefabricated sheet pile part flange, profile steel with the upper end extending out of the upper end surface of the reinforced concrete prefabricated sheet pile is pre-embedded in the reinforced concrete prefabricated sheet pile, two ends of the reinforced concrete prefabricated top plate are provided with connecting holes with the same shape as the cross section of the profile steel, the upper end of the profile steel is penetrated in the connecting holes, and the reinforced concrete prefabricated sheet pile part flange forms a template for pouring a fine stone concrete layer in the step S3; the section steel is sleeved with a sleeve web, the upper end of the sleeve web is provided with a flange pressed on the reinforced concrete prefabricated top plate, the sleeve web and the section steel are fixed together through a bolt and a nut in a matching mode, the flange, the reinforced concrete prefabricated top plate and the reinforced concrete prefabricated sheet pile are fixed together through a bolt and a nut in a matching mode, and the sleeve web and the flange are both poured in the fine aggregate concrete layer; the underground pipe gallery is a widened pipe gallery, the reinforced concrete prefabricated sheet piles comprise first sheet piles of a linear structure and second sheet piles of a broken line structure, each second sheet pile comprises a first section and a second section, one ends of the first section and the second section are connected together in a broken line mode, the upper ends of the first section and the second section are internally embedded with profile steel with exposed upper ends, one sides, far away from the inner space of the underground pipe gallery, of the upper ends of the first section and the second section are provided with reinforced concrete prefabricated sheet pile part flanges, and the second sheet piles form corners of the widened part of the underground pipe gallery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN108343059A (en) * | 2017-01-22 | 2018-07-31 | 杭州南联地基基础工程有限公司 | The two walls unification half that underground pipe gallery combines prefabricated socket inverse makees method of construction |
| CN107558491B (en) * | 2017-07-13 | 2019-09-17 | 浙江永联建设工程股份有限公司 | A kind of underground pipe gallery and its construction method |
| CN109577371A (en) * | 2018-12-31 | 2019-04-05 | 江苏扬桩金源管业有限公司 | The assembled piping lane of pile wall interaction |
| CN110080242A (en) * | 2019-04-24 | 2019-08-02 | 广州市城市规划勘测设计研究院 | The construction method of basement pile wall interaction structural system |
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