CN107882052B - Prefabricated assembled foundation that sinks of plus building elevator - Google Patents
Prefabricated assembled foundation that sinks of plus building elevator Download PDFInfo
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- CN107882052B CN107882052B CN201711038486.8A CN201711038486A CN107882052B CN 107882052 B CN107882052 B CN 107882052B CN 201711038486 A CN201711038486 A CN 201711038486A CN 107882052 B CN107882052 B CN 107882052B
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- bottom plate
- cast
- elevator
- side steel
- water
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 47
- 239000010959 steel Substances 0.000 claims abstract description 47
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 17
- 238000011065 in-situ storage Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 210000001503 joint Anatomy 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 5
- 238000000641 cold extrusion Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 12
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 9
- 239000002689 soil Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Foundations (AREA)
Abstract
The invention relates to an externally added prefabricated assembly type sinking foundation for a building elevator, which comprises an enclosing wall, a bottom plate and a cushion layer, wherein the cushion layer is cast in situ in a foundation pit by adopting plain mortar; the bottom plate is flat and is arranged on the cushion layer in a mortar sitting mode; the enclosure is a rectangular frame body and is connected with the upper surface of the bottom plate through steel bars and high-strength mortar. The invention has reasonable design, simple structure and convenient assembly, can effectively shorten the construction period, save the labor and materials for on-site construction, reduce the cost, ensure the engineering quality, reduce the interference to the normal life of the residents of the existing building and create certain economic benefit by decomposing and prefabricating the basic components of the additional building elevator and transporting the basic components to the on-site for assembly.
Description
Technical Field
The invention relates to a building foundation, in particular to an additional elevator foundation of a building, and specifically relates to a prefabricated assembly type sinking foundation of an additional building elevator.
Background
At present, China enters an aging society, 1-2 hundred million old people over 60 years live in multi-storey residential buildings below 7 floors, and the existing multi-storey buildings are not provided with elevators and are very inconvenient for the old people to get on and off. In recent years, governments greatly promote civil engineering, and multi-storey houses are popularized in various large cities and additionally provided with elevators. When the existing sinking type foundation of the additional elevator is constructed, a foundation pit, a cushion layer, a mounting bottom plate and an enclosure template are excavated on site, a reinforcement cage is arranged and bundled, and concrete is poured in sequence, so that the construction period is as long as several months, the construction space is narrow, the working efficiency is low, materials are wasted, the construction operation also interferes with the normal life of residents in the existing building community, and constructors and residents are easy to conflict in the market, and even the construction period is influenced.
Disclosure of Invention
The invention aims to provide an additional prefabricated assembly type sinking foundation for a building elevator, which aims to overcome the defects of the prior art, can effectively shorten the construction period, reduce the cost and reduce the interference to the lives of residents in residents by disassembling and prefabricating components and then assembling the components on site, and is worthy of popularization.
The technical scheme of the invention is as follows:
an externally added prefabricated assembly type sinking foundation of a building elevator comprises an enclosing wall, a bottom plate and a cushion layer, wherein the cushion layer is cast in situ in a foundation pit by adopting plain mortar; the bottom plate is flat and is arranged on the cushion layer in a mortar sitting mode; the enclosure is a rectangular frame body and is connected with the upper surface of the bottom plate through steel bars and high-strength mortar.
Furthermore, a plurality of hollow plastic spheres are filled in the bottom plate, and each sphere is a hemispherical shape with a plane top surface; a rectangular concave platform matched with the shape and size of the enclosing wall is prefabricated on the upper surface of the bottom plate; the upper surface of the concave table is embedded with a steel plate for installing various elevator accessories; a lifting ring for lifting is arranged beside the concave table.
Furthermore, the bottom plate is uniformly divided into two half bottom plates according to the size of the elevator, and a horizontal post-cast strip is adopted for realizing the on-site operation
Pouring and connecting; the enclosure wall is decomposed into two symmetrical groove-shaped half enclosure walls according to the size of the elevator, and two vertical post-cast strips are connected in a cast-in-place mode; the semi-enclosing wall spans the horizontal post-cast strip.
Furthermore, four corners of the top surface of the enclosing wall are provided with embedded bolts and embedded steel plates for installing the elevator shaft frame and hanging rings for hoisting.
Furthermore, the butt joint surfaces of the two half bottom plates and the butt joint surfaces of the two half enclosing walls are grooves; the horizontal post-cast strip and the vertical post-cast strip are respectively matched with the grooves of the half bottom plate and the half enclosing wall; the groove of the half bottom plate is internally provided with a water facing side steel bar and a back water side steel bar from bottom to top respectively; the water-facing side steel bars and the back water side steel bars are arranged in the grooves of the semi-enclosing walls from outside to inside respectively; the water-facing side reinforcing steel bars are connected with each other in an overlapping parallel welding mode, and the water-backing side reinforcing steel bars are connected through a horizontal grouting sleeve or a cold extrusion sleeve or a welding line.
Furthermore, the end parts of the water-facing side steel bars are bent inwards and then are mutually overlapped and welded into a whole in parallel; and a water stop steel plate is embedded in the groove of the butt joint surface between the water facing side steel bar and the back water side steel bar.
Furthermore, the enclosing wall and the bottom plate are connected through a plurality of groups of four-bar reinforced columns in a grouting mode, and a grouting sleeve is adopted to be connected nearby the vertical post-pouring zone in a grouting mode.
Furthermore, the four-bar reinforced column comprises four uniformly distributed reinforced bars, a plurality of stirrups are longitudinally arranged along the four-bar reinforced column, the four-bar reinforced column is bound into a variable cross-section column shape with a table-shaped transition and a large lower part and a small upper part, the large cross-section and the table-shaped section are embedded and poured in the bottom plate, and the small cross-section is exposed out of the upper surface of the bottom plate.
Furthermore, the four-bar reinforced columns are inserted into and embedded in the corrugated pipes in the enclosing wall 1, the corrugated pipes are reinforced by spiral stirrups, and high-strength mortar is filled in the corrugated pipes to form connecting nodes.
The invention has the beneficial effects that:
the invention has reasonable design, simple structure and convenient assembly, can effectively shorten the construction period, save the labor and materials for on-site construction, reduce the cost, ensure the engineering quality, reduce the interference to the normal life of the residents of the existing building as much as possible and create favorable conditions for improving the construction quality and the economic benefit by decomposing and prefabricating the basic components and transporting the basic components to the on-site to be assembled into a whole.
Drawings
Fig. 1 is a vertical cross-sectional view of the present invention.
Fig. 2 is a top view of fig. 1 in accordance with the present invention.
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention.
FIG. 4 is a view taken along line K of FIG. 3 in accordance with the present invention.
Fig. 5 is a cross-sectional view C-C of fig. 3 of the present invention.
Fig. 6 is a cross-sectional view taken along line D-D of fig. 3 in accordance with the present invention.
FIG. 7 is an enlarged view of a portion Q of FIG. 1 according to the present invention.
Fig. 8 is a partial enlarged view of R in fig. 2 and 3 according to the present invention.
Fig. 9 is a partial cross-sectional view E-E of fig. 4 in accordance with the present invention.
In the figure: 1-enclosing wall; 1-1-embedding bolts; 1-2-embedding a steel plate; 1-3-bellows; 1-4-spiral stirrup; 1-5-vertical grouting sleeve; 2-a bottom plate; 2-1-four-bar reinforced column; 2-1-1-reinforcing steel bar; 2-1-2-stirrup; 2-2-steel plate; 2-3-vertical steel bars; 2-4-hollow plastic balls; 2-5-hoisting ring; 2-6-a steel bar on the back water side; 2-7-water stop steel plate; 2-8-water facing side steel bar; 2-9-concave stage; 3-cushion layer; 4-soil layer; 5-post-pouring the strip; 5-1-horizontal grouting sleeve; 5-2-high strength mortar; 5-3-longitudinal steel bars; 6-waterproof material.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1, 2 and 3, the prefabricated assembled sinking foundation of the additional building elevator comprises an enclosing wall 1, a bottom plate 2 and a cushion layer 3. The cushion layer 3 is cast in situ in the foundation pit by adopting plain mortar; the bottom plate 2 is flat and is placed on the unset cushion layer plain mortar of the cushion layer 3 in a mortar sitting mode, so that the bottom plate is tightly contacted with the cushion layer, and various loads on the bottom plate can be uniformly transmitted to a peripheral foundation. The enclosing wall 1 is a rectangular frame body, is fixed on the upper surface of the bottom plate in a reinforced mortar anchoring mode, and is externally filled with a soil layer 4.
As shown in fig. 1 and 5, a plurality of hollow plastic balls 2-4 are filled in the bottom plate 2, and each ball is a hemispherical ball with a plane top surface, so that the consumption of concrete can be reduced on the premise of ensuring the strength; as shown in fig. 1, 3 and 4, a rectangular recessed table 2-9 which is matched with the shape and size of the enclosure wall 1 and is convenient for embedding the enclosure wall 1 is prefabricated on the upper surface of the bottom plate 2, and the recessed table 2-9 can directly transmit horizontal wind load and dynamic load borne by an elevator shaft to the bottom plate through the enclosure wall when in use, so that horizontal load borne by four-bar steel bars 2-1 and vertical steel bars 2-3 which are used for connecting the enclosure wall 1 and the bottom plate 2 is reduced or eliminated, and the use safety of an elevator shaft structural system is improved; the upper surface of the concave table 2-9 is embedded with a steel plate 2-2 for installing various elevator accessories; a lifting ring 2-5 for lifting is arranged beside the concave platform 2-9.
As shown in fig. 4, the bottom plate 2 is uniformly divided into two half bottom plates according to the size of the elevator, and is connected by a horizontal post-cast strip 5; as shown in fig. 2, the enclosing wall 1 is decomposed into two symmetrical trough-shaped half enclosing walls, and two vertical post-pouring belts 5 are used for connection. After the enclosing wall 1 and the bottom plate 2 are symmetrically decomposed, the volume and the weight of each component are reduced, the prefabricated enclosure is convenient to prefabricate, is suitable for transportation of common vehicles, and is convenient for hoisting construction in a narrow space around the existing building. As shown in fig. 2, the half enclosing wall crosses the horizontal post-cast strip 5 of the bottom plate, so that the horizontal post-cast strip and the vertical post-cast strip are prevented from appearing in the same vertical plane to form a through weak area, and the overall strength of the prefabricated foundation is guaranteed.
As shown in fig. 1 and 2, embedded bolts 1-1 for installing an elevator shaft frame, embedded steel plates 1-2 and lifting rings 2-5 for lifting are arranged at four corners of the top surface of the enclosing wall 1.
As shown in fig. 8, the butt-joint surfaces of the two half bottom plates and the butt-joint surfaces of the two half enclosing walls are both in the shape of a groove with an inner opening, so that gaps on the upstream surface of the component contacting with soil can be minimized, the water permeability probability can be reduced, and enough construction space can be reserved for connecting reinforcing steel bars in the groove; the water-facing side steel bars 2-8 and the backwater side steel bars 2-6 are respectively arranged in the groove of the half bottom plate from bottom to top; the reinforcing steel bars 2-8 on the water-facing side and the reinforcing steel bars 2-6 on the back water side are arranged in the slope of the semi-enclosing wall from outside to inside respectively; the water-facing side steel bars 2-8 are mutually connected in an overlapping parallel welding mode, and the water-backing side steel bars 2-6 are connected through a horizontal grouting sleeve 5-1 or a cold extrusion sleeve or a welding line; the end parts of the water-facing side steel bars 2-8 are bent inwards, then are overlapped to reach the length specified by the specification, and are welded into a whole in parallel, so that the connection strength of the steel bars is ensured; and a water stop steel plate 2-7 is arranged between the water facing side steel bar 2-8 and the water backing side steel bar 2-6, can block a concrete joint, and is tightly connected with a foundation block and post-cast strip concrete to prevent the post-cast strip from seeping from outside to inside.
As shown in fig. 9, the four-bar reinforced column 2-1 includes four uniformly distributed reinforced bars, and a plurality of stirrups are arranged along the longitudinal direction of the reinforced bars, and are bound into a variable cross-section column shape with a transitional platform shape and a large lower part and a small upper part, wherein the large cross-section and the platform-shaped section are embedded and cast in the bottom plate; the reinforced column with a smaller cross section in the four reinforced columns 2-1 and a plurality of vertical reinforcing steel bars 2-3 are exposed out of the upper surface of the concave platform 2-9 and inserted into the corrugated pipe 1-3 embedded in the bottom surface of the enclosing wall 1, and the outside of the corrugated pipe is reinforced by spiral stirrups 1-4, so that the shearing resistance and the connection strength of the node can be enhanced; high-strength mortar 5-2 is filled in the corrugated pipe 1-3 to form a vertical connecting node. The reinforcing steel bar column 2-1 reserved on the bottom plate can be directly connected with a wall body with smaller thickness in a grouting mode through the variable cross section treatment, and the trouble that the thickness of the wall body is increased due to the fact that a grouting sleeve and a cold extrusion sleeve which adopt connecting reinforcing steel bars need to reserve longer post-pouring sections and need to thicken a protective layer is avoided. As shown in fig. 4, 6 and 7, because the size near the groove is limited, the corrugated pipe cannot be pre-buried, the vertical steel bars are pre-buried near the vertical post-cast strip 5 on the bottom plate 2, and the half grouting sleeves 1-5 reserved at the bottom of the enclosure wall 1 are inserted and connected through grouting.
As shown in fig. 7, the inner side and the outer side of the connecting seam between the enclosing wall 1 and the bottom plate 2 are sealed by waterproof materials 6, so as to prevent water from permeating through the seam.
As shown in fig. 8, longitudinal steel bars 5-3 are arranged in the post-cast strip 5 to ensure that the post-cast strip has enough overall strength.
The parts not involved in the present invention are the same as or can be implemented using the prior art.
Claims (4)
1. An externally added prefabricated assembly type sinking foundation for a building elevator comprises an enclosing wall, a bottom plate and a cushion layer, and is characterized in that the cushion layer is cast in situ in a foundation pit by adopting plain mortar; the bottom plate is flat and is arranged on the cushion layer in a mortar sitting mode; the enclosure is a rectangular frame body and is connected with the upper surface of the bottom plate through steel bars and high-strength mortar; the bottom plate is uniformly divided into two half bottom plates according to the size of the elevator, and a horizontal post-cast strip is adopted for cast-in-place connection; the enclosure wall is decomposed into two symmetrical groove-shaped half enclosure walls according to the size of the elevator, and two vertical post-cast strips are connected in a cast-in-place mode; the semi-enclosing wall spans the horizontal post-pouring belt; the butt joint surfaces of the two half bottom plates and the butt joint surfaces of the two half enclosing walls are grooves; the horizontal post-cast strip and the vertical post-cast strip are respectively matched with the grooves of the half bottom plate and the half enclosing wall; the groove of the half bottom plate is internally provided with a water facing side steel bar and a back water side steel bar from bottom to top respectively; the water-facing side steel bars and the back water side steel bars are arranged in the grooves of the semi-enclosing walls from outside to inside respectively; the water-facing side steel bars are connected with each other in an overlapping parallel welding mode, and the backwater side steel bars are connected through a horizontal grouting sleeve or a cold extrusion sleeve; the end parts of the water-facing side steel bars are bent inwards and then are mutually overlapped and welded into a whole in parallel; a water stop steel plate is embedded in a groove of a butt joint surface between the water facing side steel bar and the back water side steel bar; the fence and the bottom plate are connected through a plurality of groups of four-bar reinforced columns in a grouting mode, and are connected near the vertical post-pouring zone in a grouting mode through grouting sleeves; the four-bar reinforced column comprises four uniformly distributed reinforced bars, a plurality of stirrups are longitudinally arranged along the four-bar reinforced column and are bound into a variable cross-section column shape with a table-shaped transition and a large lower part and a small upper part, wherein the large cross-section and the table-shaped section are embedded and poured in the bottom plate, and the small cross-section is exposed out of the upper surface of the bottom plate.
2. An add-on prefabricated assembly type sinking foundation for building elevators as claimed in claim 1, wherein the bottom plate is internally filled with a plurality of hollow plastic spheres, each sphere being a hemisphere with a planar top surface; a rectangular concave platform matched with the shape and size of the enclosing wall is prefabricated on the upper surface of the bottom plate; the upper surface of the concave table is embedded with a steel plate for installing various elevator accessories; a lifting ring for lifting is arranged beside the concave table.
3. An externally-added prefabricated sinking foundation for a building elevator as claimed in claim 1, wherein four corners of the top surface of the enclosing wall are provided with embedded bolts and embedded steel plates for installing an elevator shaft frame and hanging rings for hoisting.
4. An externally-added prefabricated assembled sinking foundation for building elevators as claimed in claim 1, wherein the four-bar reinforced columns are inserted into corrugated pipes embedded and cast in the enclosure walls, the corrugated pipes are externally reinforced by spiral stirrups and internally filled with high-strength mortar to form connecting joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038486.8A CN107882052B (en) | 2017-10-31 | 2017-10-31 | Prefabricated assembled foundation that sinks of plus building elevator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711038486.8A CN107882052B (en) | 2017-10-31 | 2017-10-31 | Prefabricated assembled foundation that sinks of plus building elevator |
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| CN107882052A CN107882052A (en) | 2018-04-06 |
| CN107882052B true CN107882052B (en) | 2020-07-14 |
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| CN108867481B (en) * | 2018-07-16 | 2024-01-23 | 广州市市政工程设计研究总院有限公司 | Prefabricated assembled FRP muscle material concrete side anticollision barrier is connected in guardrail grout |
| CN108914958A (en) * | 2018-07-24 | 2018-11-30 | 青岛长永机械工程有限公司 | A kind of existing building installation elevator Assembled caisson basis and its construction method |
| CN109295995A (en) * | 2018-10-22 | 2019-02-01 | 张云天 | The multi-storey building of cold district installs the prefabricated assembled pit base apparatus of elevator additional |
| CN109778895B (en) * | 2018-12-27 | 2020-09-25 | 淮阴工学院 | External elevator's pin-connected panel basis |
| CN111236390A (en) * | 2020-01-19 | 2020-06-05 | 中建四局安装工程有限公司 | Push pipe trenchless construction method |
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Effective date of registration: 20220407 Address after: Building F2, No. 532-1, Zhongshan East Road, Qinhuai District, Nanjing City, Jiangsu Province Patentee after: Nanjing ruiyong Urban Renewal Research Institute Co.,Ltd. Address before: 210028 Room 201, 02 Building, No. 3 Teachers'New Village, Maigaoqiao Street, Qixia District, Nanjing City, Jiangsu Province Patentee before: Wan Yong |