CN117266491A - Integrated structure of equipment foundation pit and terrace and construction method - Google Patents
Integrated structure of equipment foundation pit and terrace and construction method Download PDFInfo
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- CN117266491A CN117266491A CN202311230207.3A CN202311230207A CN117266491A CN 117266491 A CN117266491 A CN 117266491A CN 202311230207 A CN202311230207 A CN 202311230207A CN 117266491 A CN117266491 A CN 117266491A
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- 239000002689 soil Substances 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 27
- 239000010959 steel Substances 0.000 claims abstract description 27
- 239000010410 layer Substances 0.000 claims description 115
- 239000004567 concrete Substances 0.000 claims description 51
- 239000000463 material Substances 0.000 claims description 29
- 239000002344 surface layer Substances 0.000 claims description 18
- 239000004575 stone Substances 0.000 claims description 15
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 238000007788 roughening Methods 0.000 claims description 8
- 239000004793 Polystyrene Substances 0.000 claims description 6
- 230000001680 brushing effect Effects 0.000 claims description 6
- 229920002223 polystyrene Polymers 0.000 claims description 6
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 4
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000005056 compaction Methods 0.000 abstract description 4
- 239000010426 asphalt Substances 0.000 description 6
- 229920000728 polyester Polymers 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 239000002998 adhesive polymer Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 4
- 239000011083 cement mortar Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000004078 waterproofing Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/12—Flooring or floor layers made of masses in situ, e.g. seamless magnesite floors, terrazzo gypsum floors
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- 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
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
- E04F15/00—Flooring
- E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors
- E04F15/186—Underlayers covered with a mesh or the like
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Road Paving Structures (AREA)
Abstract
The invention relates to an integrated structure of a foundation pit and a terrace of equipment and a construction method, and belongs to the field of civil engineering. The integrated structure is "concave" style of calligraphy, sets up on the plain soil of compaction, including parallel arrangement's terrace and foundation ditch bottom plate to and around the foundation ditch bottom plate setting and connect the foundation ditch lateral wall on terrace. During construction, the side wall of the foundation pit is constructed firstly, and after the stress steel bars at the top of the side wall of the foundation pit are reserved and exposed, the exposed stress steel bars are fixedly connected with the terrace. Waterproof structures are respectively arranged among the terrace, the foundation pit bottom plate, the foundation pit side wall and plain soil so as to protect the terrace, the foundation pit bottom plate and the foundation pit side wall from being affected by moisture. According to the technical scheme, the terrace covers the top of the side wall of the foundation pit, and the terrace, the foundation pit bottom plate and the side wall of the foundation pit are combined into an integral fixed structure, so that ground construction joints are eliminated, and damage caused by uneven settlement of the foundation is avoided.
Description
Technical Field
The invention belongs to the field of civil engineering, and relates to an integrated structure of a foundation pit and a terrace of equipment and a construction method.
Background
At present, the manufacturing industry in China is dedicated to intelligent upgrading of factories and processes, and intelligent equipment such as AGV intelligent trolleys and the like are widely applied to manufacturing workshops in the manufacturing industries such as automobiles, engineering machinery and the like, floor joints of workshops are required to be reduced as much as possible, and the floor construction method is required to be unified and beautiful as much as possible.
The traditional equipment foundation pit and the terrace are generally independently constructed, and after the construction of the equipment foundation (foundation pit) is completed, the terrace is constructed in a workshop. Because the construction time and the surface layer construction method of the equipment foundation are different, natural construction joints can be generated between the side wall of the equipment foundation pit and the floor of the workshop, and the construction joints seriously influence the reliable operation of intelligent equipment such as AGVs of the workshop. Meanwhile, due to the fact that uneven settlement and the like can occur on the terrace and the equipment foundation, construction joints are uneven, and the terrace is attractive. Along with the increasing demands of construction units on the functionality and the attractiveness of the floor of the production workshop, the independent construction schemes of the foundation pit and the floor of the traditional equipment cannot meet the demands.
The invention provides a machine-readable storage medium for solving the functional problems and the attractive problems caused by the fact that the seam is formed on the floor in a workshop and the surface layer is different in construction method.
Disclosure of Invention
In view of the above, the invention aims to provide an integrated structure of a foundation pit and a terrace of equipment and a construction method thereof, which are used for solving the problems that uneven settlement is easy to occur between the foundation pit and the terrace of the equipment and a construction joint is not attractive.
In order to achieve the above purpose, the present invention provides the following technical solutions:
an integrated structure of a device foundation pit and a terrace is concave and comprises a terrace parallel to a horizontal plane, a foundation pit bottom plate and a foundation pit side wall perpendicular to the horizontal plane, wherein one end of the foundation pit side wall is connected around the foundation pit bottom plate, and the other end of the foundation pit side wall is fixedly connected with the terrace; the foundation pit bottom plate is provided with a projection range on the terrace, and the terrace is provided with a hole in the projection range; the connection part of the side wall of the foundation pit and the terrace comprises concrete and stress steel bars on the side wall of the foundation pit, the stress steel bars are exposed out of the surface of the concrete, and the exposed part of the stress steel bars penetrates through the terrace and is fixedly connected with the terrace.
Optionally, a metal aggregate wear-resistant surface layer with the thickness of 3mm is laid on one surface of the terrace far away from the foundation pit, and a first waterproof structure is arranged on the other surface of the terrace; the first waterproof structure comprises a PE film with the thickness of 0.4mm, which is clung to the terrace, and a 300mm thick graded broken stone base layer, which is arranged on one side of the PE film, which is far away from the terrace. The PE film and the graded broken stone base layer isolate the terrace structure from plain soil, and play roles of water resistance, permeability resistance and terrace cushion layer.
Optionally, one side of foundation ditch bottom plate on being close to the terrace is provided with the layer of strikethrough, and the another side is provided with the second waterproof construction. Wherein the thickness of the leveling layer is 20mm, and the concave side is leveled by adopting 1:2.5 cement polymer waterproof mortar.
Optionally, the second waterproof structure includes protective layer, first waterproofing membrane, first basic unit treatment layer, additional first waterproofing membrane, first leveling layer and bed course from the top down in proper order along being perpendicular to the horizontal plane direction. The multiple waterproof structures cooperate with each other to resist moisture in the plain soil, so that the foundation pit bottom plate is prevented from being damaged by moisture.
Optionally, the trowelling layer is arranged on one surface, far away from the concave of the foundation pit, of the side wall of the foundation pit, and a third waterproof structure is arranged on the other surface; wherein the thickness of the leveling layer is 20mm, and the concave side is leveled by adopting 1:2.5 cement polymer waterproof mortar.
Optionally, the trowelling layer reaches foundation ditch lateral wall direction includes second screed, second basic unit treatment layer, second waterproofing membrane and polyphenyl board in proper order. The multiple waterproof structures cooperate with each other to resist moisture in the plain soil, so that the foundation pit bottom plate is prevented from being damaged by moisture.
The construction method of the equipment foundation pit and the terrace comprises the following steps:
s1, after positive and negative zero elevation +/-0.000 m (namely terrace surface elevation) is determined, excavating a foundation pit, and tamping plain soil in the foundation pit;
s2, constructing a second waterproof structure outside the foundation pit bottom plate;
s3, constructing the foundation pit bottom plate and the foundation pit side wall;
s4, constructing the third waterproof structure outside the side wall of the foundation pit;
s5, constructing the terrace;
s6, constructing the trowelling layer on the inner wall of the foundation pit;
after the construction process of the side wall of the foundation pit is completed, the construction of the terrace is carried out, and the step S5 specifically comprises the following steps:
s51, paving a graded broken stone base layer on the compacted plain soil;
s52, paving a PE film on the graded broken stone base layer;
s53, roughening the upper surface of the side wall of the foundation pit to form a roughening area, so that the roughening area can be effectively combined with concrete of the side wall of the foundation pit when concrete is poured on a terrace;
s54, supporting a template on the terrace;
s55, binding a reinforcing steel mesh in a template of the terrace, and spot-welding edge-protecting angle steel at a corner, close to the inner wall of the foundation pit, of stress reinforcing steel reserved on the side wall of the foundation pit;
s56, pouring concrete in the templates of the terrace, and performing concrete curing;
s57, paving a wear-resistant surface layer on concrete;
and S58, grinding and polishing the wear-resistant surface layer, and spraying a concrete sealing curing agent on the wear-resistant surface layer.
Optionally, the step S2 specifically includes the following steps:
s21, pouring a concrete cushion layer on the plain soil;
s22, paving a first leveling layer on the concrete cushion layer;
s23, paving a first waterproof coiled material on the first leveling layer;
s24, brushing a layer of base layer treatment agent on the first waterproof coiled material to form a first base layer treatment layer;
s25, paving the first waterproof coiled material on the first base layer treatment layer again;
s26, pouring a concrete protection layer on the first waterproof coiled material in the step S25.
Optionally, the step S3 specifically includes the following steps:
s31, binding stress steel bars of the foundation pit bottom plate and the foundation pit side wall on the second waterproof structure completed in the step S2, wherein the stress steel bars of the foundation pit side wall extend into the terrace range towards the positive and negative zero elevation direction;
s32, supporting a template around the stressed steel bars after binding in the step S31;
s33, pouring concrete in the template completed in the step S32 and curing; the concrete on the side wall of the foundation pit is poured to the bottom elevation of the terrace plate, namely-0.250 m, the top of the side wall of the foundation pit is left to leave the thickness range of the terrace, and the concrete is poured together with the terrace concrete in the subsequent step;
s34, removing the mould after the concrete curing is completed.
Optionally, the step S4 specifically includes the following steps:
s41, arranging a second leveling layer on one side, far away from the foundation pit bottom plate, of the side wall of the foundation pit, which is completed in the step S3;
s42, brushing a layer of base layer treatment agent on the second leveling layer to form a second base layer treatment layer;
s43, paving a second waterproof coiled material on the second base layer treatment layer;
s44, sticking a polyphenyl board on the second waterproof coiled material;
s45, tamping the plain soil on one side of the side wall of the foundation pit far away from the interior of the foundation pit.
The invention has the beneficial effects that:
(1) The equipment foundation pit side wall and the terrace set form an integral structure, the top of the foundation pit side wall is connected with the bottom of the terrace, and construction joints on the terrace are eliminated, so that the terrace is smoother and more attractive.
(2) The foundation pit side wall is constructed first, the stress steel bars at the top of the foundation pit side wall are reserved and anchored into the terrace above, so that the connection between the foundation pit side wall and the terrace is more firm, the overall synergy is better, and structural damage caused by uneven settlement of the foundation can be avoided.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in the following preferred detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic cross-sectional view of an integrated structure of a foundation pit and a terrace of an apparatus;
FIG. 2 is an enlarged schematic view of a side wall of an equipment foundation pit;
fig. 3 is an enlarged schematic view of the equipment foundation pit floor.
Reference numerals:
the waterproof construction comprises a terrace (1), a foundation pit bottom plate (2), a foundation pit side wall (3), a first waterproof structure (4), a surface layer (41), a reinforcing steel mesh (42), a PE film (43), a graded broken stone base layer (44), a side protection angle steel (45), a third waterproof structure (5), a polyphenyl board (51), a second waterproof roll (52), a second base layer treatment layer (53), a second leveling layer (54), a roughening area (55), a second waterproof structure (6), a protective layer (61), a first waterproof roll (62), a first base layer treatment layer (63), a first leveling layer (64), a cushion layer (65), 7 plain soil, a leveling layer (8) and a stress reinforcing steel bar (9).
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the illustrations provided in the following embodiments merely illustrate the basic idea of the present invention by way of illustration, and the following embodiments and features in the embodiments may be combined with each other without conflict.
Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to limit the invention; for the purpose of better illustrating embodiments of the invention, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numbers in the drawings of embodiments of the invention correspond to the same or similar components; in the description of the present invention, it should be understood that, if there are terms such as "upper", "lower", "left", "right", "front", "rear", etc., that indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but not for indicating or suggesting that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limiting the present invention, and that the specific meaning of the above terms may be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1-3, an integrated structure of a foundation pit and a terrace of an apparatus is disclosed, which comprises a terrace 1 parallel to a horizontal plane, a foundation pit bottom plate 2 and a foundation pit side wall 3 perpendicular to the horizontal plane, wherein the foundation pit bottom plate 2 is arranged below the terrace 1, the terrace 1 is not arranged in a projection range of the foundation pit bottom plate 2 on the terrace 1, namely, the terrace 1 is provided with a hole in the projection range, the foundation pit side wall 3 is arranged between the terrace 1 and the foundation pit bottom plate 2 around one circle of the foundation pit bottom plate 2, the top of the foundation pit side wall 3 is roughened, and a roughening area 55 is in direct contact with the lower edge of the terrace 1; the whole structure is concave.
A20 mm thick leveling layer 8 is arranged on one surface, close to the concave, of the side wall 3 of the foundation pit and the bottom plate 2 of the foundation pit, and one side of the concave is leveled by adopting 1:2.5 cement polymer waterproof mortar. The floor 1 is paved with a wear-resistant surface layer 41 with the thickness of 3mm, the wear-resistant surface layer is made of metal aggregate, the volume weight is 5kg/m, and the concrete sealing curing agent is constructed after the wear-resistant material reaches the curing period (or after 15 days of curing) and is ground and polished. The wear-resistant surface layer 41 is close to the side of the troweling layer 8 and is also provided with a guard angle steel 45 with the width of 50mm, so that the corners of the wear-resistant surface layer 41 are protected from being damaged due to the conditions of external force collision and the like.
The terrace 1, the foundation pit bottom plate 2 and the foundation pit side wall 3 are all of reinforced concrete structures, the thickness of the terrace 1 is 250mm, the elevation of the plate surface is +/-0.000 m, the strength of concrete is C30, and the C8@150X150 reinforcing steel bar meshes 42 are arranged inside; the concrete strength of the foundation pit bottom plate 2 and the foundation pit side wall 3 is C30, the impervious grade is P8, and the thicknesses of the foundation pit bottom plate 2 and the foundation pit side wall 3 and the number, specification, spacing and configuration form of the steel bars arranged in the concrete are all determined according to the calculation of the actual stress condition on site. The stress steel bars 9 in the side wall 3 of the foundation pit are inserted into the terrace 1.
The integrated structure formed by the terrace 1, the foundation pit bottom plate 2 and the foundation pit side wall 3 is arranged on the rammed plain soil 7, and the compaction coefficient of the plain soil 7 is more than or equal to 0.94. One side that integrated structure is close to plain soil 7 all is provided with waterproof construction, and terrace 1 is provided with first waterproof construction 4 near one side of plain soil 7, and one side that foundation ditch bottom plate 2 is close to plain soil 7 is provided with second waterproof construction 6, and one side that foundation ditch lateral wall 3 is close to plain soil 7 is provided with third waterproof construction 5.
The first waterproof structure 4 comprises a PE film 43 and a graded macadam base 44. The PE film 43 is closely attached to the lower edge of the terrace 1, and the graded broken stone base layer 44 is arranged on the plain soil 7 closely attached to the lower edge of the PE film 43. The PE film 43 is fully arranged at the lower edge of the terrace 1, and the thickness of the PE film is 0.4mm; the graded broken stone base layer 44 is 300mm thick, and the compactness is more than or equal to 0.95. The PE film 43 and the graded broken stone base layer 44 isolate the terrace 1 structure from plain soil 7, and play a role in waterproof and impervious functions.
The second waterproof structure 6 comprises a protective layer 61, a first waterproof coiled material 62, a first base treatment layer 63, an additional first waterproof coiled material 62, a first leveling layer 64 and a cushion layer 65 which are sequentially arranged from the foundation pit bottom plate 2 to the plain soil 7. The protective layer 61 is arranged close to the lower edge of the foundation pit bottom plate 2 and is formed by casting C20 fine stone concrete with the thickness of 50mm; the first waterproof coiled material 62 is 3mm thick, and a self-adhesive polymer modified asphalt waterproof coiled material (namely a polyester tire waterproof coiled material) is adopted to form a layer of reliable waterproof barrier to protect the side wall 3 of the foundation pit from being affected by moisture; the first base layer treatment layer 63 is a layer of base layer treatment agent for enhancing the bonding force between the waterproof material and the foundation pit; then a layer of waterproof coiled material is added on the first base treatment layer 63, the thickness is 3mm, and the self-adhesive polymer modified asphalt waterproof coiled material (namely, the polyester tire waterproof coiled material) is adopted, so that the waterproof and seepage-proof effects are mainly enhanced; the second screed 54 is 20mm thick, using 1:2.5 cement mortar; the cushion layer 65 is 150mm thick and is formed by casting C20 concrete and is used for water isolation, drainage and freeze prevention so as to improve the working condition between a foundation (foundation pit bottom plate 2) and a foundation (plain soil 7).
The third waterproof structure 5 comprises a second leveling layer 54, a second base treatment layer 53, a second waterproof coiled material 52 and a polystyrene board 51 which are sequentially wrapped and arranged on the side wall 3 of the foundation pit from the side wall 3 of the foundation pit to the plain soil 7. The second screed 54 is a 20mm thick 1:2.5 cement mortar; the second base treatment layer 53 is a layer of base treatment agent brushed to enhance the adhesion between the waterproof material and the side wall 3 of the foundation pit; the second waterproof roll 52 adopts a self-adhesive polymer modified asphalt waterproof roll (namely a polyester tire waterproof roll) with the thickness of 3mm to form a reliable waterproof barrier to protect the side wall 3 of the foundation pit from being affected by moisture; the polystyrene board 51 is an extruded polystyrene board 51 with the thickness of 30mm, and is adhered to the outer side of the waterproof coiled material, the extruded polystyrene board 51 has excellent water resistance and moisture resistance, the water absorption rate is extremely low, and moisture in plain soil 7 can be prevented from entering the side wall 3 of the foundation pit.
The first waterproof roll 62 and the second waterproof roll 52 overlap at least 250mm at the junction part of the two to avoid infiltration of moisture through the junction part and improve the waterproof effect.
The construction method of the equipment foundation pit and terrace integrated structure comprises the following steps:
s1, preparing work;
s11, determining positive and negative zero elevation + -0.000 m, namely the elevation of the 1-plane of the terrace;
s12, excavating a foundation pit;
and S13, tamping the plain soil 7 in the foundation pit until the compaction coefficient is more than or equal to 0.94.
S2, constructing a second waterproof structure 6 outside the foundation pit bottom plate 2;
s21, pouring a concrete cushion layer 65, wherein C20 concrete is adopted, and the pouring thickness is 150mm;
s22, arranging a first leveling layer 64 on a concrete cushion layer 65, and adopting cement mortar with the ratio of 1:2.5, wherein the construction thickness is 20mm;
s23, paving a first waterproof roll 62 on the first leveling layer 64, wherein the first waterproof roll 62 is a polymer modified asphalt waterproof roll (namely a polyester tire waterproof roll) with the thickness of 3 mm;
s24, brushing a layer of base layer treatment agent on the first waterproof coiled material 62 to form a first base layer treatment layer 63;
s25, paving a polymer modified asphalt first waterproof roll 62 (namely a polyester tire waterproof roll) with the thickness of 3mm on the first base treatment layer 63 again;
s26, casting a C20 fine stone concrete protective layer 61 with the thickness of 50mm on the first waterproof coiled material 62.
S3, constructing a foundation pit bottom plate 2 and a foundation pit side wall 3;
s31 binding the steel bars of the foundation pit bottom plate 2 and the foundation pit side wall 3, wherein the number, the specification, the spacing and the configuration mode of the steel bars are determined according to the calculation of the actual stress condition on site, the stress steel bars 9 of the foundation pit side wall 3 extend upwards to the terrace range, and the elevation of the top of the stress steel bars is not lower than +/-0.000 m;
s32, supporting a mould on the foundation pit bottom plate 2 and the foundation pit side wall 3, wherein the elevation of the top of the mould plate of the foundation pit side wall 3 is-0.250 m;
s33, pouring concrete, namely pouring C30 concrete, wherein the concrete of the side wall 3 of the foundation pit is poured to the elevation of-0.250 m, the top of the side wall of the foundation pit is left to leave a terrace thickness range, and the terrace thickness range is not poured, and the concrete and the terrace concrete in the subsequent steps are poured together;
s34, curing concrete;
s35, removing the formwork, and removing the formwork after the concrete curing is completed.
S4, constructing a second waterproof structure 6 outside the side wall 3 of the foundation pit;
s41, leveling the side wall 3 of the foundation pit, constructing a second leveling layer 54 on the side wall 3 of the foundation pit with the template removed, and constructing the foundation pit with the thickness of 20mm by adopting cement mortar of 1:2.5;
s42, brushing a layer of base layer treatment agent on the constructed leveling layer to form a second base layer treatment layer 53;
s43, paving a self-adhesive polymer modified asphalt second waterproof roll 52 (namely a polyester tire waterproof roll) with the thickness of 3mm on the second base treatment layer 53;
s44, sticking an extruded polystyrene board 51 with the thickness of 30mm on the second waterproof coiled material 52;
s45, ramming plain soil 7 on one side of the side wall 3 of the foundation pit far from the interior of the foundation pit until the compaction coefficient is more than or equal to 0.94;
s5, constructing a terrace 1;
s51, constructing a graded broken stone base layer 44 with the thickness of 300mm on the compacted plain soil 7, wherein the compactness is more than or equal to 0.95;
s52, paving a PE film 43 with the thickness of 0.4mm on the graded broken stone base layer 44 in a full paving mode;
s53, surface roughening is carried out on the top (the elevation-0.250 m position) of the side wall 3 of the foundation pit which is completed by construction, a roughening area 55 is formed, stress steel bars 9 of the side wall 3 of the foundation pit are exposed, and the reserved stress steel bars 9 which are to be stretched into the terrace 1 in the side wall 3 of the foundation pit are not damaged; s54, erecting a die on the terrace 1, wherein the elevation of the surface structure of the terrace 1 is controlled to be +/-0.000 m;
s55, binding a C8@150X150 reinforcing steel bar net sheet 42 in a double-layer bidirectional configuration mode, and paying attention to inserting reinforcing steel bars at the joint of the terrace 1 and the foundation pit side wall 3 into reinforcing steel bars extending out of the foundation side wall; and a corner of the stress steel bar 9 reserved on the side wall 3 of the foundation pit, which is close to the inner wall of the foundation pit, is welded with a guard angle steel 45 in a spot mode;
s56, pouring concrete, namely pouring C30 concrete into a concrete structure terrace 1 with the thickness of 250 mm;
s57, curing concrete;
s58, after concrete curing is completed, constructing a metal aggregate wear-resistant surface layer 41 with the thickness of 3mm on the concrete of the terrace 1, wherein the volume weight of the metal aggregate wear-resistant surface layer is 5kg/m;
s59, after the wear-resistant surface layer 41 reaches the curing period (or 15 days after curing), the concrete sealing curing agent is constructed after grinding and polishing.
S6, constructing a leveling layer 8 on the inner wall of the foundation pit, and leveling by adopting cement polymer waterproof mortar with the thickness of 1:2.5 to paint 20 mm.
According to the invention, the equipment foundation pit side wall 3 and the terrace 1 are assembled to form an integral structure, and the top of the foundation pit side wall 3 is connected with the bottom of the terrace 1, so that a construction joint on the terrace 1 is eliminated, and the terrace 1 is smoother and more attractive. And optimized the construction process, the foundation ditch lateral wall 3 is under construction earlier, reserves the atress reinforcing bar 9 at its top and anchor top terrace 1 for the foundation ditch lateral wall 3 is more fastened with the connection of terrace 1, and whole travelling synergy is better, can avoid the structure damage that the uneven subsidence of foundation arouses.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the claims of the present invention.
Claims (10)
1. An integrated structure of a foundation pit and a terrace of equipment is concave and comprises a terrace (1) parallel to a horizontal plane, a foundation pit bottom plate (2) and a foundation pit side wall (3) perpendicular to the horizontal plane, wherein one end of the foundation pit side wall (3) is connected around the foundation pit bottom plate (2), and the other end of the foundation pit side wall is fixedly connected with the terrace (1); the foundation pit bottom plate (2) is provided with a projection range on the terrace (1), and the terrace (1) is provided with a hole in the projection range; the method is characterized in that: the connection part of the foundation pit side wall (3) and the terrace (1) comprises concrete of the foundation pit side wall (3) and stress steel bars (9), the stress steel bars (9) are exposed out of the surface of the concrete, and the exposed part of the stress steel bars (9) penetrates through the terrace (1) and is fixedly connected with the terrace (1).
2. The integrated structure of equipment foundation pit and terrace according to claim 1, wherein: one surface of the terrace (1) far away from the foundation pit is paved with a surface layer (41), and the other surface of the terrace is provided with a first waterproof structure (4); the first waterproof structure (4) comprises a PE film (43) which is clung to the terrace (1), and a graded broken stone base layer (44) which is arranged on one side of the PE film (43) away from the terrace (1).
3. The integrated structure of equipment foundation pit and terrace according to claim 1, wherein: one surface of the foundation pit bottom plate (2) close to the terrace (1) is provided with a leveling layer (8), and the other surface is provided with a second waterproof structure (6).
4. The integrated structure of equipment foundation pit and terrace according to claim 3, wherein: the second waterproof structure (6) comprises a protective layer (61), a first waterproof roll (62), a first base layer treatment layer (63), an additional first waterproof roll (62), a first leveling layer (64) and a cushion layer (65) from top to bottom in sequence along the direction perpendicular to the horizontal plane.
5. The integrated structure of equipment foundation pit and terrace according to claim 1, wherein: one surface, far away from the pit indent, of the pit side wall (3) is provided with the leveling layer (8), and the other surface is provided with a third waterproof structure (5).
6. The integrated structure of equipment foundation pit and terrace (1) according to claim 5, characterized in that: the third waterproof structure (5) sequentially comprises a second leveling layer (54), a second base layer treatment layer (53), a second waterproof coiled material (52) and a polystyrene board (51) along the direction from the leveling layer (8) to the side wall (3) of the foundation pit.
7. The construction method of the equipment foundation pit and the terrace comprises the following steps:
s1, excavating a foundation pit, and tamping plain soil (7) in the foundation pit;
s2, constructing a second waterproof structure (6) outside the foundation pit bottom plate (2);
s3, constructing the foundation pit bottom plate (2) and the foundation pit side wall (3);
s4, constructing the third waterproof structure (5) outside the foundation pit side wall (3);
s5, constructing the terrace (1);
s6, constructing the trowelling layer (8) on the inner wall of the foundation pit;
the method is characterized in that: after the construction process of the foundation pit side wall (3) is completed, the construction of the terrace (1) is carried out, and the step S5 specifically comprises the following steps:
s51, paving a graded broken stone base layer (44) on the compacted plain soil (7);
s52, paving a PE film (43) on the graded broken stone base layer (44);
s53, roughening the upper surface of the side wall (3) of the foundation pit;
s54, supporting a template on the terrace (1);
s55, binding a reinforcing steel bar net sheet (42) in a template of the terrace (1);
s56, pouring concrete in the templates of the terrace (1), and performing concrete curing;
s57, paving a wear-resistant surface layer (41) on concrete;
s58, grinding and polishing the wear-resistant surface layer (41), and spraying a concrete sealing curing agent on the wear-resistant surface layer (41).
8. The method for constructing the foundation pit and the terrace of the equipment according to claim 7, wherein: the step S2 specifically comprises the following steps:
s21, pouring a concrete cushion layer (65) on the plain soil (7);
s22, paving a first leveling layer (64) on the concrete cushion layer (65);
s23, paving a first waterproof coiled material (62) on the first leveling layer (64);
s24, brushing a layer of base layer treatment agent on the first waterproof coiled material (62) to form a first base layer treatment layer (63);
s25, paving the first waterproof coiled material (62) on the first base layer treatment layer (63) again;
s26, casting a concrete protection layer (61) on the first waterproof coiled material (62) in the step S25.
9. The method for constructing the foundation pit and the terrace of the equipment according to claim 7, wherein: the step S3 specifically comprises the following steps:
s31, binding stress steel bars (9) of the foundation pit bottom plate (2) and the foundation pit side wall (3) on the second waterproof structure (6) completed in the step S2;
s32, supporting a template around the stressed steel bar (9) subjected to binding in the step S31;
s33, pouring concrete in the template completed in the step S32 and curing;
s34, removing the mould after the concrete curing is completed.
10. The method for constructing the foundation pit and the terrace of the equipment according to claim 7, wherein: the step S4 specifically comprises the following steps:
s41, arranging a second leveling layer (54) on the side, away from the foundation pit bottom plate (2), of the foundation pit side wall (3) completed in the step S3;
s42, brushing a layer of base layer treatment agent on the second leveling layer (54) to form a second base layer treatment layer (53);
s43, paving a second waterproof coiled material (52) on the second base layer treatment layer (53);
s44, sticking a polyphenyl board (51) on the second waterproof coiled material (52);
s45, tamping the plain soil (7) on one side, far away from the interior of the foundation pit, of the side wall (3) of the foundation pit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311230207.3A CN117266491A (en) | 2023-09-21 | 2023-09-21 | Integrated structure of equipment foundation pit and terrace and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311230207.3A CN117266491A (en) | 2023-09-21 | 2023-09-21 | Integrated structure of equipment foundation pit and terrace and construction method |
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| CN117266491A true CN117266491A (en) | 2023-12-22 |
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| CN202311230207.3A Pending CN117266491A (en) | 2023-09-21 | 2023-09-21 | Integrated structure of equipment foundation pit and terrace and construction method |
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| CN (1) | CN117266491A (en) |
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- 2023-09-21 CN CN202311230207.3A patent/CN117266491A/en active Pending
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