CN110904992A - Elevator foundation member for integrally assembling elevator and construction method thereof - Google Patents
Elevator foundation member for integrally assembling elevator and construction method thereof Download PDFInfo
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- CN110904992A CN110904992A CN201911267962.2A CN201911267962A CN110904992A CN 110904992 A CN110904992 A CN 110904992A CN 201911267962 A CN201911267962 A CN 201911267962A CN 110904992 A CN110904992 A CN 110904992A
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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
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Abstract
The invention provides an integrally assembled elevator base member additionally provided with an elevator and a construction method thereof, which are particularly suitable for implementing a prefabricated foundation pit technology for an area with poor soil quality.
Description
Technical Field
The invention relates to the field of elevator assembly, in particular to an integrally assembled elevator foundation member for additionally mounting an elevator and a construction method thereof.
Background
A lot of existing buildings in China are built in the eighties and ninety years, and due to the limitation of a plurality of factors such as economic conditions, building levels and the like, the existing buildings are simple in functions, the quality of life of residents living in the buildings is poor, and the existing buildings with seven floors or below are not provided with elevators. However, at present, owners living in these old residences are mostly elderly people or people with mobility inconvenience, and such people are very inconvenient to go up and down stairs, which not only limits their trips and outdoor activities, but also easily causes some accidents.
In order to make residents in old communities comfortable and convenient to live without investing a large amount of capital, a large amount of municipal works choose to install outdoor elevators outside the existing buildings. In the process of installing the outdoor elevator additionally, an elevator basic member needs to be additionally arranged, and then a steel structure and the elevator can be paved on the elevator basic member. For most areas, the construction sequence of the elevator foundation components is on-site pit digging, pile driving, pouring and maintenance to form a foundation pit, and after the elevator foundation components reach corresponding strength, the superstructure is additionally installed, so that the period of the whole construction process is very long, the elevator foundation components are greatly influenced by the natural environment, and the construction period is longer under the condition of storm. In addition, current elevator foundation member need be under construction at the scene, can bring noise pollution and environmental pollution for the resident of old district in the whole work progress, can influence the living environment of old district, and especially to the old man, whole work progress is decocting and intolerable.
The appearance of the prefabricated foundation pit greatly shortens the processing period, but the prefabricated foundation pit on the market cannot be applied to the region with soft and collapsed geology. For the areas with poor geology, piling is needed in the construction process, the piling is generally connected with the foundation pit, other construction processes except the cast-in-place foundation pit are not available on the market at present, however, the prefabricated foundation pit is independently processed and manufactured, and the technology of the prefabricated foundation pit cannot be applied to the places needing piling at present.
Disclosure of Invention
The invention aims to provide an integrally-assembled elevator base component for adding an elevator and a construction method thereof, which are particularly suitable for implementing a prefabricated foundation pit technology for an area with poor soil quality.
This technical scheme provides an elevator foundation member of elevator is installed additional to unit-installment formula, includes at least:
the foundation structure comprises a supporting foundation arranged in a stratum foundation and a prefabricated foundation pit arranged on the supporting foundation;
wherein support the basis and at least including beating a plurality of steel-pipe piles of locating in the stratum foundation and arrange the rubble bed course on the steel-pipe pile in, both sides on the rubble bed course are equipped with detachable and reserve the reinforcing bar, and wherein prefabricated foundation ditch includes the steel column and the concrete shear force wall that raft board and perpendicular to raft board set up, and the raft board is arranged in on the rubble bed course and the both sides of raft board are through built-in raft board foundation reinforcing bar and reservation bar connection, and the both sides of prefabricated foundation ditch form and enlarge the basis, enlarges the backfill soil on the basis.
In some embodiments, the two sides of the raft form a step surface with a small upper part and a large lower part, and raft foundation steel bars arranged in the raft comprise upper layer raft steel bars arranged on an upper layer and lower layer raft steel bars arranged on a lower layer; the reserved steel bars comprise upper-layer steel bars and lower-layer steel bars.
In some embodiments, upper reinforcing bars and upper raft reinforcing bars correspond through muff coupling, and lower floor reinforcing bars and lower raft reinforcing bars correspond through muff coupling.
In some embodiments, the upper layer of steel bars and the lower layer of steel bars are both in an L-shaped structure, and the vertical sections of the upper layer of steel bars and the lower layer of steel bars are bound by stirrups.
In some embodiments, the central axes of the steel column and the steel pipe pile coincide.
According to another aspect of the present invention, there is provided a construction method of an elevator base member integrally assembled to an elevator, comprising the steps of:
s1: excavating a section needing to be constructed with the outdoor elevator to a designed elevation on site, and then driving a steel pipe pile in a piling area;
s2: pouring a leveling steel pipe pile, and pouring a gravel cushion layer, wherein the width of the gravel cushion layer is larger than that of the piling area;
s3: hoisting a prefabricated foundation pit and placing the prefabricated foundation pit on the broken stone cushion layer, and ensuring that a steel column of the prefabricated foundation pit is superposed with the central axis of the steel pipe pile;
s4, connecting the two sides of the raft foundation steel bars in the raft through sleeves to form an enlarged foundation, wherein the reserved steel bars and the raft foundation steel bars in the raft are correspondingly arranged;
and S5, backfilling a soil layer on the enlarged foundation, and installing an elevator component on the prefabricated foundation pit.
In some embodiments, the two sides of the raft form a step surface with a small upper part and a large lower part, and raft foundation steel bars arranged in the raft comprise upper layer raft steel bars arranged on an upper layer and lower layer raft steel bars arranged on a lower layer; the reserved steel bars comprise upper-layer steel bars and lower-layer steel bars.
In some embodiments, upper reinforcing bars and upper raft reinforcing bars correspond through muff coupling, and lower floor reinforcing bars and lower raft reinforcing bars correspond through muff coupling.
In some embodiments, the upper layer of steel bars and the lower layer of steel bars are both in an L-shaped structure, and the vertical sections of the upper layer of steel bars and the lower layer of steel bars are bound by stirrups.
In some embodiments, wherein the upper and lower raft reinforcing bars are arranged in parallel spaced apart relation, and the upper raft reinforcing bar is shorter in length than the lower raft reinforcing bar.
Compared with the prior art, the invention has the following characteristics and beneficial effects:
1. the elevator base member for integrally assembling the elevator and the construction method thereof are particularly suitable for laying the prefabricated foundation pit which has poor geological condition and cannot be constructed by piling by taking the upper soil layer as the bearing layer, can accelerate the processing speed and quality of the outdoor elevator in the area with poor geological condition, and expand the application range of the prefabricated foundation pit.
2. After the construction of the elevator foundation member of the elevator which is integrally assembled and additionally provided with the elevator is completed, the pile foundation in the foundation pit bears the vertical force to control the settlement of the integral foundation, and the part of the foundation pit covering the outer side of the soil layer and the upper part of the foundation pit are covered with soil to resist the overturning bending moment, so that the bearing stability of the prefabricated foundation pit is well ensured, and the safety of the construction process is ensured.
3. The prefabricated foundation pit and the cast-in-place foundation are synchronously carried out, the hoisting and post-installation modes are simple and light, the accuracy is high, and the processing period is further shortened.
Drawings
Fig. 1 is a top view of an elevator base member of an integrally rigged additional elevator according to the present invention.
Fig. 2 is a schematic cross-sectional view of the base structure of an elevator of an integrally rigged additional elevator according to the invention.
Fig. 3 is a schematic structural view of a prefabricated pit in an elevator base member of an integrally fabricated additional elevator according to the present invention.
In the figure: 10-supporting foundation, 11-steel pipe pile, 12-gravel cushion layer, 13-prefabricated reinforcement layer, 131-upper-layer reinforcement, 132-lower-layer reinforcement, 20-prefabricated foundation pit, 21-steel column, 22-raft, 23-raft foundation reinforcement, 231-upper-layer raft reinforcement and 232-lower-layer raft reinforcement.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
The scheme provides an elevator foundation component particularly suitable for the conditions of poor geological conditions and construction thereof, in the regions with poor geological conditions, an elevator cannot use an upper soil layer as a bearing layer, and the requirement of bearing capacity can be met only by piling a foundation in the construction process, however, piling is generally directly connected with a foundation pit, namely, the foundation pit is prepared on site through pouring, so that the elevator foundation component is not suitable for placing a prefabricated foundation pit.
The elevator base member of the integrally assembled additional elevator provided by the technical scheme at least comprises a supporting base (10) arranged in a stratum base and a prefabricated foundation pit (20) arranged on the supporting base (10), wherein the supporting foundation (10) at least comprises a plurality of steel pipe piles (11) arranged in the stratum foundation and a gravel cushion layer (12) arranged on the steel pipe piles (11), both sides of the gravel cushion layer (12) are provided with detachable reserved steel bars (13), the prefabricated foundation pit (20) comprises a raft (22), a steel column (21) and a concrete shear wall, wherein the steel column (21) and the concrete shear wall are perpendicular to the raft (22), the raft (22) is arranged on the gravel cushion (12), two sides of the raft (22) are connected with the reserved steel bars (13) through built-in raft foundation steel bars (23), two sides of the prefabricated foundation pit (20) form an enlarged foundation, and backfill soil is filled on the enlarged foundation.
Because the additional elevator can be arranged on the prefabricated foundation pit, the height of the additional elevator is higher, the overturning bending moment bending to the side can be generated under wind load, the conventional overturning bending moment is resisted by the uplift resistance of the steel pipe pile, and the pile and the foundation pit are required to be directly poured for construction. However, according to the technical scheme, the two sides of the prefabricated foundation pit (20) are covered with soil on the basis of expansion, the dead weight of the soil on the two sides provides an anti-overturning bending moment, the prefabricated foundation pit is pressed by the dead weight of the soil to ensure the stability of the structure, the prefabricated foundation pit can be directly placed and connected with the reserved steel bars (13) poured on site, and the construction progress is accelerated while the prefabricated foundation pit is convenient to install.
The steel pipe piles (11) are arranged in the ground foundation in a separated mode, and particularly the steel pipe piles (11) are arranged at even intervals to better share the load-bearing gravity of the steel pipe piles. In addition, as shown in fig. 1, the steel pipe pile (11) is enclosed into a rectangular shape and placed below the gravel cushion layer (12), and the gravity of the upper layer is uniformly supported on four layers so as to reduce the pressure on the soft soil layer.
And leveling and pouring the upper side of the steel pipe pile (11) to form a gravel cushion layer (12), wherein the width of the gravel cushion layer (12) is larger than that of the steel pipe pile (11), and preferably, the gravel cushion layer (12) is arranged symmetrically to the center of the steel pipe pile (11). In the technical scheme, the thickness of the gravel cushion layer (12) is controlled to be 120-180CM thick.
The prefabricated foundation pit (20) is arranged on the gravel cushion layer (12), wherein the prefabricated foundation pit (20) comprises a raft (22) which is integrally poured, and a steel column (21) and a concrete shear wall which are arranged on the raft (22), wherein the steel column (21) and the concrete shear wall are perpendicular to the raft (22) and are arranged at four corners of the raft (22), the concrete shear wall and the steel column (21) are integrally formed, and the steel column (21) and the concrete shear wall are surrounded to form a rectangular space.
It is worth mentioning that the steel column (21) and the steel pipe pile (11) are located on the same vertical line, that is, the central axes of the steel column (21) and the steel pipe pile (11) are overlapped, so that the steel column (21) and the steel pipe pile (11) can share the gravity thereon together.
In addition, concrete shear walls are poured outside the steel columns (21), and the sides of the steel columns (21) and the raft plates (22) are arranged at intervals so as to reserve spaces for expanding foundations.
Particularly, the side of the raft plate (22) forms a step surface, namely, the two side edges of the raft plate (22) form a step surface with a small upper part and a big lower part. Raft board (22) embeds has raft board basis reinforcing bar (23), and wherein raft board basis reinforcing bar (23) are including arranging upper raft board reinforcing bar (231) of upper strata and arranging lower floor's raft board reinforcing bar (232) in, and wherein upper raft board reinforcing bar (231) and lower floor's raft board reinforcing bar (232) parallel interval set up, and the length of upper raft board reinforcing bar (231) is less than lower floor's raft board reinforcing bar (232) to the step face of cooperation raft board (22) both sides.
Raft foundation reinforcing bar (23) and rubble bed course (12) avris reserve reinforcing bar (13) and connect, and in this technical scheme, raft foundation reinforcing bar (23) and reserve reinforcing bar (13) pass through muffjoint. Reserve reinforcing bar (13) also include upper reinforcing bar (131) and lower floor's reinforcing bar (132), and wherein upper reinforcing bar (131) and upper raft board reinforcing bar (231) correspond and pass through muffjoint, and lower floor's reinforcing bar (132) and lower floor's raft board reinforcing bar (232) correspond and pass through muffjoint.
In this technical scheme, upper reinforcing bar (131) and lower floor's reinforcing bar (132) are L word structure, and the vertical section of upper reinforcing bar (131) and lower floor's reinforcing bar (132) is binded through the stirrup, can ensure its stability of connecting like this, and shares the gravity on the reservation reinforcing bar (13). And backfilling soil at the position of the enlarged foundation at the side of the prefabricated foundation pit (20). And the gravity of the backfill soil is better dispersed by the staggered arrangement mode of the upper layer steel bar (131) and the lower layer steel bar (132), and the steel bars are prevented from being damaged.
Correspondingly, the scheme provides a construction method of an elevator foundation member for integrally assembling an elevator, which comprises the following steps:
s1: excavating the field of the outdoor elevator to be constructed to a designed elevation on site, and then driving a steel pipe pile (11) in a piling area;
s2: pouring a leveling steel pipe pile (11), and pouring a gravel cushion layer (12), wherein the width of the gravel cushion layer (12) is larger than that of a piling area;
s3: hoisting a prefabricated foundation pit (20) and placing the prefabricated foundation pit on the gravel cushion (12), and ensuring that a steel column (21) of the prefabricated foundation pit (20) is superposed with the central axis of the steel pipe pile (11);
s4, connecting the two sides of the raft foundation steel bars (23) in the raft (22) with the reserved steel bars (13) through sleeves to form an enlarged foundation, wherein the reserved steel bars (13) are arranged corresponding to the raft foundation steel bars (23) in the raft (22);
and S5, backfilling a soil layer on the basis of expansion, and installing an elevator component on the prefabricated foundation pit (20).
The structure of the elevator base member is as described above, and the description thereof is not repeated here.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. An elevator foundation member of an integrally assembled type added elevator, characterized by comprising at least:
the foundation pit structure comprises a supporting foundation (10) arranged in a stratum foundation and a prefabricated foundation pit (20) arranged on the supporting foundation (10);
wherein support basis (10) are including beating a plurality of steel-pipe piles (11) of locating in the stratum basis and arrange rubble bed course (12) on steel-pipe pile (11) in at least, both sides on rubble bed course (12) are equipped with detachable and reserve reinforcing bar (13), wherein prefabricated foundation ditch (20) are including raft board (22) and steel column (21) and the concrete shear wall that perpendicular to raft board (22) set up, raft board (22) are arranged in on rubble bed course (12) and the both sides of raft board (22) are connected through built-in raft board foundation reinforcing bar (23) and reserve reinforcing bar (13), the both sides of prefabricated foundation ditch (20) form and enlarge the basis, backfill on the enlarged basis.
2. The integrally assembled elevator foundation member added with an elevator according to claim 1, wherein the two sides of the raft (22) form a step surface with a small upper part and a large lower part, and raft foundation reinforcements (23) built in the raft (22) comprise upper layer raft reinforcements (231) arranged on the upper layer and lower layer raft reinforcements (232) arranged on the lower layer; the reserved steel bars (13) comprise upper-layer steel bars (131) and lower-layer steel bars (132).
3. The integrally assembled elevator base member for installing an elevator as claimed in claim 2, wherein the upper layer reinforcing bars (131) and the upper layer raft reinforcing bars (231) are correspondingly connected by sleeves, and the lower layer reinforcing bars (132) and the lower layer raft reinforcing bars (232) are correspondingly connected by sleeves.
4. The elevator base member of an integrally assembled-type additional elevator according to claim 2, wherein the upper-layer reinforcing steel bars (131) and the lower-layer reinforcing steel bars (132) are of an L-shaped structure, and vertical sections of the upper-layer reinforcing steel bars (131) and the lower-layer reinforcing steel bars (132) are bound by stirrups.
5. The elevator base member of an integrally assembled additional elevator according to claim 1, wherein central axes of the steel columns (21) and the steel pipe piles (11) are coincident.
6. The construction method of the elevator foundation member for integrally assembling the elevator is characterized by comprising the following steps of:
s1: after a section where the outdoor elevator needs to be constructed is excavated to a designed elevation on site, a steel pipe pile (11) is arranged in a piling area;
s2: pouring a leveling steel pipe pile (11), and pouring a gravel cushion layer (12), wherein the width of the gravel cushion layer (12) is larger than that of a piling area;
s3: hoisting a prefabricated foundation pit (20) and placing the prefabricated foundation pit on the gravel cushion (12), and ensuring that a steel column (21) of the prefabricated foundation pit (20) is superposed with the central axis of the steel pipe pile (11);
s4, connecting the two sides of the raft foundation steel bars (23) in the raft (22) with the reserved steel bars (13) through sleeves to form an enlarged foundation, wherein the reserved steel bars (13) are arranged corresponding to the raft foundation steel bars (23) in the raft (22);
and S5, backfilling a soil layer on the basis of expansion, and installing an elevator component on the prefabricated foundation pit (20).
7. The construction method of an elevator foundation member of an integrally assembled additional elevator according to claim 6, wherein step surfaces with small upper parts and large lower parts are formed on two sides of the raft (22), and raft foundation reinforcements (23) built in the raft (22) comprise upper layer raft reinforcements (231) placed on an upper layer and lower layer raft reinforcements (232) placed on a lower layer; the reserved steel bars (13) comprise upper-layer steel bars (131) and lower-layer steel bars (132).
8. The construction method of the integrally assembled elevator foundation member for installing an elevator according to claim 7, wherein the upper layer steel bars (131) and the upper layer raft steel bars (231) are correspondingly connected through sleeves, and the lower layer steel bars (132) and the lower layer raft steel bars (232) are correspondingly connected through sleeves.
9. The construction method of an elevator base member of an integrally assembled additional elevator according to claim 7, wherein the upper layer reinforcing bars (131) and the lower layer reinforcing bars (132) are each of an L-shaped structure, and vertical sections of the upper layer reinforcing bars (131) and the lower layer reinforcing bars (132) are bound by stirrups.
10. The construction method of an elevator foundation member of an integrally assembled additional elevator according to claim 7, wherein the upper raft steel bars (231) and the lower raft steel bars (232) are arranged in parallel at intervals, and the length of the upper raft steel bars (231) is smaller than that of the lower raft steel bars (232).
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112100708A (en) * | 2020-07-20 | 2020-12-18 | 中国二十冶集团有限公司 | BIM modeling method for unconventional elevator foundation pit |
CN113026801A (en) * | 2021-03-29 | 2021-06-25 | 中建八局第四建设有限公司 | Construction method for reinforcing steel pipe pile of construction elevator foundation |
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CN108487290A (en) * | 2018-03-12 | 2018-09-04 | 华信咨询设计研究院有限公司 | It is cast-in-place to land basis and construction method with precast combined portable communication tower |
CN109457720A (en) * | 2019-01-04 | 2019-03-12 | 杭州西奥电梯现代化更新有限公司 | The foundation precast elements and its construction method of assembled elevator |
CN110016919A (en) * | 2018-01-10 | 2019-07-16 | 梅赛德斯电梯(苏州)有限公司 | A kind of aging blocks install the minimally invasive foundation pit structure of elevator and construction method additional |
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2019
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Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110016919A (en) * | 2018-01-10 | 2019-07-16 | 梅赛德斯电梯(苏州)有限公司 | A kind of aging blocks install the minimally invasive foundation pit structure of elevator and construction method additional |
CN108487290A (en) * | 2018-03-12 | 2018-09-04 | 华信咨询设计研究院有限公司 | It is cast-in-place to land basis and construction method with precast combined portable communication tower |
CN109457720A (en) * | 2019-01-04 | 2019-03-12 | 杭州西奥电梯现代化更新有限公司 | The foundation precast elements and its construction method of assembled elevator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112100708A (en) * | 2020-07-20 | 2020-12-18 | 中国二十冶集团有限公司 | BIM modeling method for unconventional elevator foundation pit |
CN112100708B (en) * | 2020-07-20 | 2022-07-08 | 中国二十冶集团有限公司 | BIM modeling method for unconventional elevator foundation pit |
CN113026801A (en) * | 2021-03-29 | 2021-06-25 | 中建八局第四建设有限公司 | Construction method for reinforcing steel pipe pile of construction elevator foundation |
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