CN106759439B - Tower crane foundation for foundation pit and construction method thereof - Google Patents

Tower crane foundation for foundation pit and construction method thereof Download PDF

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Publication number
CN106759439B
CN106759439B CN201611191901.9A CN201611191901A CN106759439B CN 106759439 B CN106759439 B CN 106759439B CN 201611191901 A CN201611191901 A CN 201611191901A CN 106759439 B CN106759439 B CN 106759439B
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China
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tower crane
bearing platform
steel bar
vertical
underground continuous
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CN106759439A (en
Inventor
雷克
王欣
陈新喜
王俊佚
刘征
危鼎
李赟
白洁
孙鑫
鲍旺
黎良青
范玮武
张宇
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China Construction Eighth Engineering Division Co Ltd
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China Construction Eighth Engineering Division Co Ltd
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/42Foundations for poles, masts or chimneys
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/32Foundations for special purposes
    • E02D27/44Foundations for machines, engines or ordnance

Abstract

The invention provides a tower crane foundation for a foundation pit and a construction method thereof, wherein the tower crane foundation for the foundation pit comprises the following components: the first underground continuous wall is arranged in the foundation pit, the top of the first underground continuous wall is provided with an enclosing purlin structure, and a vertical main rib penetrating through the enclosing purlin structure is arranged in the first underground continuous wall; the tower crane bearing platform comprises a tower crane bearing platform steel bar structure and concrete poured on the tower crane bearing platform steel bar structure, the tower crane bearing platform steel bar structure is coated on the outer side of the purlin enclosing structure, and the tower crane bearing platform steel bar structure is connected with the upper part of the vertical main rib; and the vertical diagonal brace comprises a vertical diagonal brace steel bar structure and concrete poured on the vertical diagonal brace steel bar structure, wherein the first end of the vertical diagonal brace steel bar structure is fixed on the first underground continuous wall, and the second end of the vertical diagonal brace steel bar structure is fixed on the tower crane bearing platform steel bar structure. The invention solves the problems that the construction cannot be carried out due to the limitation of construction sites and the construction cost is high by utilizing the traditional tower crane foundation arrangement method when a high-rise building adopting a deep foundation pit is constructed.

Description

Tower crane foundation for foundation pit and construction method thereof
Technical Field
The invention relates to the technical field of building construction, relates to a tower crane foundation, and particularly relates to a tower crane foundation for a foundation pit and a construction method thereof.
Background
The tower crane foundation can be divided into a movable type and a fixed type. The fixed tower crane foundation can be divided into the following parts according to the relation between the bearing platform and the bearing layer on the lower part of the bearing platform: firstly, a shallow foundation, wherein a bearing platform is directly placed on a natural foundation; and secondly, transferring the load of the bearing platform by using the cast-in-situ bored pile on the pile foundation.
Along with the rapid development of the urbanization in China, the urban land is increasingly tense, the open cost is relatively high in the busy sections of the city, the high-rise buildings with foundation pits on the open floors are usually found in the same area, and the projects of a plurality of plots are constructed simultaneously. The construction land blocks surrounded by other construction land blocks in the middle are often limited by a construction site when the tower crane foundation is arranged. The traditional tower crane foundation arrangement method has the following defects:
firstly, a tower crane foundation arranged by adopting a shallow foundation is not suitable for the construction of high-rise buildings;
the second adopts the pile foundation to arrange the tower crane foundation, because need be in site operation drilling bored concrete pile, is not suitable for the construction plot that receives the construction site restriction, and the later stage still need chiseling away the bored concrete pile moreover, still is unfavorable for environmental protection when construction cost improves.
Disclosure of Invention
In order to overcome the defects in the prior art, a tower crane foundation for a foundation pit and a construction method thereof are provided so as to solve the problems that construction cannot be carried out due to the limitation of a construction site and the construction cost is high when a high-rise building adopting a deep foundation pit is constructed by utilizing a traditional tower crane foundation arrangement method.
In order to achieve the above object, the present invention provides a tower crane foundation for a foundation pit, comprising:
the first underground continuous wall is arranged in the foundation pit, an enclosing purlin structure is arranged at the top of the first underground continuous wall, and a vertical main rib penetrating through the enclosing purlin structure is arranged in the first underground continuous wall;
the tower crane bearing platform comprises a tower crane bearing platform steel bar structure and concrete poured on the tower crane bearing platform steel bar structure, the tower crane bearing platform steel bar structure is coated on the outer side of the surrounding purlin structure, and the tower crane bearing platform steel bar structure is connected with the upper part of the vertical main rib; and
vertical bracing, include vertical bracing steel bar structure and pour in the last concrete of vertical bracing steel bar structure, vertical bracing steel bar structure's first end is fixed in first underground continuous wall, vertical bracing steel bar structure's second end is fixed in tower crane cushion cap steel bar structure.
Further, tower crane cushion cap steel bar structure includes cushion cap main part steel bar structure and is used for consolidating cushion cap main part steel bar structure's cushion cap hidden beam steel bar structure, cushion cap hidden beam steel bar structure locates cushion cap main part steel bar structure.
Furthermore, the number of the cushion cap hidden beam steel bar structures is two, and the two cushion cap hidden beam steel bar structures are respectively positioned at two ends of the cushion cap main body steel bar structure.
Further, cushion cap main part steel bar structure includes:
the top reinforcing bars of the bearing platforms are connected between the two hidden beam reinforcing steel bar structures of the bearing platforms;
the bottom reinforcement of the bearing platform is positioned below the top reinforcement of the bearing platform and is connected between the two hidden beam steel bar structures of the bearing platform;
and the bearing platform connecting rib is connected with the top reinforcing rib of the bearing platform and the bottom reinforcing rib of the bearing platform.
Further, vertical bracing include vertical bracing steel bar structure and pour in vertical bracing steel bar structure's concrete, vertical bracing steel bar structure connect in the lower part of vertical main muscle with tower crane cushion cap steel bar structure.
Further, still including being used for supporting the backfill soil of the first side of tower crane cushion cap, the backfill soil backfill in the side slope of foundation ditch with between the tower crane cushion cap.
Further, still include the second side of tower crane cushion cap is equipped with second underground continuous wall, the second side of tower crane cushion cap with be equipped with horizontal support between the second underground continuous wall.
On the other hand, the invention also provides a construction method of the tower crane foundation for the foundation pit, which comprises the following steps:
excavating a foundation pit;
constructing a first underground continuous wall in the foundation pit, and reserving a vertical main rib at the top of the first underground continuous wall;
constructing a purlin enclosing structure on the vertical main ribs at the top of the first underground continuous wall;
binding a vertical diagonal bracing steel bar structure and a tower crane bearing platform steel bar structure on the first underground continuous wall, wherein a first end of the vertical diagonal bracing steel bar structure is connected to the lower part of the vertical main rib, a second end of the vertical diagonal bracing steel bar structure is connected to the tower crane bearing platform steel bar structure, and the tower crane bearing platform steel bar structure is coated on the enclosing purlin structure and is connected to the upper part of the vertical main rib;
installing a template of the vertical inclined strut and a template of the tower crane bearing platform;
and pouring concrete in the template of the vertical inclined strut and the template of the tower crane bearing platform to form the vertical inclined strut and the tower crane bearing platform.
Further, the vertical inclined strut and the tower crane bearing platform are integrally cast and formed.
The tower crane foundation for the foundation pit has the advantages that the tower crane bearing platform is directly arranged on the underground continuous wall of the permanent structure, and the underground structure enclosing system is used as the vertical supporting system of the foundation, so that the inconvenience caused by site limitation in engineering construction is solved, the engineering construction cost is effectively controlled, the concept of green construction is promoted, and the environmental pollution is avoided. Meanwhile, on one hand, a tower crane bearing platform is vertically reinforced by utilizing a vertical inclined strut; arranging a bearing platform hidden beam in the tower crane bearing platform to reinforce the tower crane bearing platform; on the other hand, the tower crane bearing platform is reinforced in the horizontal direction by ingeniously utilizing backfilling earthwork between the foundation pit and the tower crane bearing platform and utilizing the transverse support, so that the safety of the tower crane arranged on the tower crane foundation is ensured.
Drawings
FIG. 1 is a top view of a tower crane foundation for a foundation pit of the present invention.
Fig. 2 is a cross-sectional view taken along line a-a in fig. 1.
Fig. 3 is a cross-sectional view taken along line B-B of fig. 1.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Fig. 1 is a top view of a tower crane foundation for a foundation pit according to the present invention, fig. 2 is a sectional view taken along line a-a in fig. 1, and fig. 3 is a sectional view taken along line B-B in fig. 1.
Referring to fig. 1 to 3, the present invention provides a tower crane foundation for a foundation pit, including: first underground continuous wall 1, tower crane cushion cap 2 and vertical bracing 3. The first underground continuous wall 1 is arranged on the inner side of the foundation pit, and the top of the first underground continuous wall 1 is provided with a surrounding purlin structure 11. The enclosing purlin structure 11 can be a steel enclosing purlin, and can also be a reinforced concrete structure poured on the first underground continuous wall 1. The tower crane bearing platform 2 is used for installing a tower crane 6. Vertical 3 vertical braces of vertical bracing are between first underground continuous wall 1 and tower crane cushion cap 2, and the lateral part at first underground continuous wall 1 is fixed to the first end of vertical bracing 3, and the second end support of vertical bracing 3 is in the bottom of tower crane cushion cap.
The first underground continuous wall 1 is close to the foundation pit slope and is 1m thick. The vertical main rib 111 penetrating through the enclosing purlin structure 11 is arranged in the first underground continuous wall 1, the vertical main rib 111, close to the first side of the foundation pit slope, of the first underground continuous wall 1 is a C25mm @160mm steel bar, and the vertical main rib 111, far away from the second side of the foundation pit slope, of the first underground continuous wall 1 is a C32mm @170mm steel bar. And pouring to form a second underground continuous wall 5 on the second side of the first underground continuous wall 1. A surrounding purlin structure 11 is formed at the top of the first underground continuous wall 1 in a construction mode, and the vertical main ribs 111 penetrate through the surrounding purlin structure 11 and are exposed out of the upper surface of the surrounding purlin structure 11. The vertical main rib 111 is exposed out of the surrounding purlin structure 11 and is completely anchored into the tower crane bearing platform 2. In actual construction, in order to facilitate site construction, the vertical main rib 111 is of a sectional type, and the vertical main rib 111 is divided into an upper portion and a lower portion, specifically, when constructing the first underground continuous wall 1, the lower portion of the vertical main rib 111 is poured in the first underground continuous wall 1 first, when constructing the enclosing purlin structure 11, the upper portion of the vertical main rib 111 and the lower portion of the vertical main rib 111 are connected to form the complete vertical main rib 111, and the upper portion of the vertical main rib 111 penetrates through the enclosing purlin structure 11 and is anchored in the tower crane bearing platform 2. The length of the upper part of the vertical main rib 111 is at least 1400 mm. The upper part and the lower part of the vertical main rib 111 can be connected by welding, and the welding length is 10 d; the upper part and the lower part of the vertical main reinforcement 111 can also be fixedly connected through a reinforcement connector.
The specification and size of the tower crane bearing platform 2 are 5m × 4m × 1.5 m. the tower crane bearing platform 2 comprises a tower crane bearing platform steel bar structure 21 and concrete poured on the tower crane bearing platform steel bar structure 21, the tower crane bearing platform steel bar structure 21 is coated on the outer side of the surrounding purlin structure 11, and the tower crane bearing platform steel bar structure 21 is connected with the upper part of the vertical main rib 111.
The tower crane bearing platform steel bar structure 21 comprises a bearing platform main body steel bar structure 211 and a bearing platform hidden beam steel bar structure 212, the bearing platform hidden beam steel bar structure 212 is used for reinforcing and improving the bending resistance of a tower crane bearing platform 2, the bearing platform hidden beam steel bar structure 212 is arranged at two ends of the bearing platform main body steel bar structure 211 and is perpendicular to the side face of a first underground continuous wall 1, the specification size of the bearing platform hidden beam steel bar structure 212 is 4m × 1.5m × 1m, the bearing platform main body steel bar structure 211 comprises a bearing platform top reinforcing bar, a bearing platform bottom reinforcing bar and a bearing platform connecting bar, the bearing platform top reinforcing bar is a single-layer bidirectional reinforcing bar, a C28 @ mm @100mm steel bar is selected, the bearing platform bottom reinforcing bar is symmetrically arranged with the top, a C28mm @100mm steel bar is also selected, the bearing platform connecting bar is a bidirectional quincunx-shaped C10 @300mm steel bar, the vertical connecting bar at the top reinforcing bar of the bearing platform and the bearing platform connecting bar are connected between the two bearing platform hidden beam steel bar structures 212, the bearing platform top reinforcing bar structures and the bearing platform connecting bar are arranged below the bearing platform, the bearing platform connecting bar structure 211 and the bearing platform connecting bar structure are arranged below the bearing platform, the bearing platform connecting bar and the bearing platform connecting bar structure and the bearing platform connecting bar structure.
The vertical inclined strut 3 comprises a vertical inclined strut steel bar structure 31 and concrete poured on the vertical inclined strut steel bar structure 31, the vertical inclined strut steel bar structure 31 is formed by a plurality of C28mm @170mm steel bars arranged on two sides of the first underground continuous wall 1, a first end of the vertical inclined strut steel bar structure 31 is welded with the lower portion of the vertical main bar 111, a second end of the vertical inclined strut steel bar structure 31 is welded with a supporting platform top reinforcing bar, the vertical inclined strut 3 formed by pouring is a triangular reinforced concrete haunched arm with the length of 1m × 1m, and further, in actual construction, the vertical inclined strut 3 and the tower crane supporting platform 22 are integrally poured and formed.
In order to prevent the tower crane bearing platform from overturning to the first side of the tower crane bearing platform close to the foundation pit side slope after the tower crane is installed, backfill soil is backfilled between the foundation pit side slope and the first side of the tower crane bearing platform 2. The tamped backfill soil is used for supporting against the first side of the tower crane bearing platform 2.
Relatively, in order to prevent that the tower crane cushion cap from toppling to the second side of keeping away from the foundation ditch side slope of tower crane cushion cap after having installed the tower crane, still be equipped with many horizontal braces 4 in the inboard of tower crane cushion cap 2. Horizontal support 4 can be used for supporting the second side of tower crane cushion cap 2 to make the tower crane basis more firm. Specifically, the first end of the transverse support 4 is fixed on the tower crane bearing platform 2, and the second end of the transverse support 4 is fixed on the second underground continuous wall 5. The transverse support 4 can be of a steel structure or a reinforced concrete structure. When the transverse support 4 adopts a reinforced concrete structure, as a better implementation mode, the reinforced concrete structure of the transverse support can be bound together with the reinforced concrete structure of the tower crane bearing platform, and concrete pouring is carried out together.
The invention also provides a construction method of the tower crane foundation for the foundation pit, which comprises the following steps:
step 1:
and positioning and paying off are carried out according to the construction scheme and the set control points, and the earthwork is excavated to form a foundation pit.
Step 2:
erecting a template of the first underground continuous wall 1 at the bottom of the foundation pit, binding a steel reinforcement framework of the first underground continuous wall 1, and pouring the first underground continuous wall 1 after die assembly. And reserving a vertical main reinforcement 111 at the top of the first underground continuous wall 1, and continuously constructing a second underground continuous wall 5 on the inner side of the first underground continuous wall 1 in the same way according to the construction drawing.
And step 3:
after the first underground continuous wall 1 is constructed, constructing the enclosing purlin structure 11 on the vertical main rib 111 reserved at the top of the first underground continuous wall 1, so that the vertical main rib 111 penetrates through the enclosing purlin structure 11 and is exposed at the top of the enclosing purlin structure 11.
And 4, step 4:
chiseling the concrete on the side part of the first underground continuous wall 1 below the preset position of the tower crane bearing platform 2 until the vertical main ribs 111 on the two sides of the first underground continuous wall 1 are exposed. Vertical bracing steel bar structure 31 of lower part ligature of the vertical main muscle 111 of first underground continuous wall 1 encloses 11 outsides of purlin structure fixed tower crane cushion cap steel bar structure 21 for the lower part of the vertical main muscle 111 of the first end welded connection of vertical bracing steel bar structure 31, the second end welding tower crane cushion cap steel bar structure 21 of vertical bracing steel bar structure 31, the cladding of tower crane cushion cap steel bar structure 21 is on the upper portion of enclosing purlin structure 11 and welded connection vertical main muscle 111.
And 5:
and (3) installing templates of a tower crane bearing platform 2 and a vertical inclined strut 3 on the side part of the first underground continuous wall 1 and fixing the templates through support. The formwork of the tower crane bearing platform 2 adopts nine-layer plates, can be prefabricated into a plurality of blocks in advance and installed on site, and the formwork is fixed by using steel pipes and square timbers as backings and supports so as to ensure that the formwork has enough rigidity, strength and stability.
And simultaneously manufacturing and binding the steel bar structure 21 of the main body of the tower crane and the steel bar structure 22 of the hidden beam of the tower crane. The bearing platform steel bars are manufactured according to the scheme and relevant regulations of acceptance and acceptance criteria of construction quality of concrete structural engineering.
The method comprises the steps of binding steel bar frameworks of a tower crane main body steel bar structure 21 and a tower crane hidden beam steel bar structure 22, after the steel bar frameworks are bound, carrying out positioning and lofting work on a bearing platform top reinforcing bar, a bearing platform bottom reinforcing bar, an embedded part and an anchor bolt of the tower crane main body steel bar structure 21, and carrying out installation and fixation on the bearing platform top reinforcing bar, the bearing platform bottom reinforcing bar, the embedded part and the anchor bolt, wherein the embedded part and the anchor bolt are installed and fixed according to the required size in a tower crane installation drawing, the size of the center of the embedded part and the center of a tower crane bearing platform 2 is required to be checked again when the embedded part and the anchor bolt are fixed, the error is controlled within 2mm, the elevation error is controlled within 5mm, after the embedded part and the anchor bolt are installed, an upper and lower phi 48mm steel pipe or L50 mm × 5mm angle steel is used for manufacturing a setting support, the embedded part, the steel bar and the tower crane main body steel bar structure 21 and the tower crane hidden beam steel bar structure 22 are welded firmly, the anchor bolt is used for preventing the concrete from shifting, after butter is used for wrapping and protecting the embedded part, the concrete, and the.
Step 6:
and concrete is poured on the template of the vertical inclined strut 3 and the template of the tower crane bearing platform 2 to form the vertical inclined strut 3 and the tower crane bearing platform 2. The vertical inclined strut 3 and the tower crane bearing platform 2 are integrally formed. The bearing platform concrete of the tower crane bearing platform 2 adopts commercial concrete. Before concrete is poured and tamped, a template is watered and moistened, sand, stone, cement and the like must be weighed by weighing when concrete is prepared, and when concrete is poured, quick insertion and slow pulling and uniform insertion points are realized, and less vibration and vibration leakage are strictly forbidden and cannot be knocked on embedded parts and bolts. The concrete surface should be dense and flat; and rechecking the position size, elevation and the like of the embedded part before initial setting of the concrete to find problems and timely processing the problems.
After the tower crane bearing platform 2 reaches the design hardness, earth is backfilled and tamped at the first side of the tower crane bearing platform 2, and a transverse support 4 is constructed between the second side of the tower crane bearing platform 2 and the second underground continuous wall 5. Specifically, the transverse support 4 may be cast by reinforced concrete, or may be in the form of a prefabricated steel structure.
The tower crane bearing platform 2 can be installed after the concrete is poured and the tower crane 6 is required to be maintained for 14 days.
It should be noted that the structures, ratios, sizes, and the like shown in the drawings attached to the present specification are only used for matching the disclosure of the present specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions of the present invention, so that the present invention has no technical essence, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
While the present invention has been described in detail and with reference to the embodiments thereof as illustrated in the accompanying drawings, it will be apparent to one skilled in the art that various changes and modifications can be made therein. Therefore, certain details of the embodiments are not to be interpreted as limiting, and the invention is to be defined by the scope of the appended claims.

Claims (7)

1. The utility model provides a tower crane basis for foundation ditch which characterized in that includes:
the first underground continuous wall is arranged in the foundation pit, an enclosing purlin structure is arranged at the top of the first underground continuous wall, and a vertical main rib penetrating through the enclosing purlin structure is arranged at the top of the first underground continuous wall;
the tower crane bearing platform comprises a tower crane bearing platform steel bar structure and concrete poured on the tower crane bearing platform steel bar structure, the tower crane bearing platform steel bar structure is arranged at the top of the first underground continuous wall and covers the outer side of the surrounding purlin structure, and the tower crane bearing platform steel bar structure is fixedly connected to the vertical main ribs; and
the first end of the vertical diagonal bracing steel bar structure is fixed on the first underground continuous wall, and the second end of the vertical diagonal bracing steel bar structure is fixed on the tower crane bearing platform steel bar structure;
the second side of tower crane cushion cap is equipped with second underground continuous wall, the second side of tower crane cushion cap with be equipped with horizontal support between the second underground continuous wall.
2. The tower crane foundation for the foundation pit as claimed in claim 1, wherein the tower crane bearing platform steel bar structure comprises a bearing platform main body steel bar structure and a bearing platform hidden beam steel bar structure for reinforcing the bearing platform main body steel bar structure, and the bearing platform hidden beam steel bar structure is fixedly connected to the bearing platform main body steel bar structure.
3. The tower crane foundation for the foundation pit as claimed in claim 2, wherein the number of the bearing platform hidden beam steel bar structures is two, and the two bearing platform hidden beam steel bar structures are respectively and fixedly connected to two ends of the bearing platform main body steel bar structures.
4. The tower crane foundation for foundation pit of claim 3, wherein said cap main body rebar structure comprises:
the top reinforcing bars of the bearing platforms are connected between the two hidden beam reinforcing steel bar structures of the bearing platforms;
the bottom reinforcement of the bearing platform is positioned below the top reinforcement of the bearing platform and is connected between the two hidden beam steel bar structures of the bearing platform; and
and the bearing platform connecting rib is connected with the top reinforcing rib of the bearing platform and the bottom reinforcing rib of the bearing platform.
5. The tower crane foundation for the foundation pit according to claim 1, further comprising backfill soil for supporting the first side of the tower crane bearing platform, wherein the backfill soil is backfilled between a side slope of the foundation pit and the tower crane bearing platform.
6. The construction method of the tower crane foundation for the foundation pit according to any one of claims 1 to 5, characterized by comprising the following steps:
excavating a foundation pit;
constructing a first underground continuous wall in the foundation pit, and reserving a vertical main rib at the top of the first underground continuous wall;
constructing a surrounding purlin structure at the top of the first underground continuous wall, wherein the surrounding purlin structure is fixedly connected to the vertical main ribs;
installing a vertical inclined strut steel bar structure and a tower crane bearing platform steel bar structure on the first underground continuous wall; the tower crane bearing platform steel bar structure is arranged at the top of the first underground continuous wall and coated outside the enclosing purlin structure, and is fixedly connected to the vertical main ribs; the first end of the vertical diagonal bracing steel bar structure is connected to the first underground continuous wall, and the second end of the vertical diagonal bracing steel bar structure is connected to the steel bar structure of the tower crane bearing platform;
installing a template of the vertical inclined strut and a template of the tower crane bearing platform;
and pouring concrete in the template of the vertical inclined strut and the template of the tower crane bearing platform to form the vertical inclined strut and the tower crane bearing platform.
7. The construction method of the tower crane foundation for the foundation pit according to claim 6, wherein the vertical diagonal brace and the tower crane bearing platform are integrally cast.
CN201611191901.9A 2016-12-21 2016-12-21 Tower crane foundation for foundation pit and construction method thereof Active CN106759439B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN106759439B true CN106759439B (en) 2020-08-04

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CN107558607B (en) * 2017-09-20 2020-03-20 中国建筑第八工程局有限公司 Tower crane system arranged on existing concrete structure and construction method thereof

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JP2002256573A (en) * 2001-03-02 2002-09-11 Chubu Electric Power Co Inc Foundation for existing foundation reinforcing steel tower and construction method for it
CN102535505A (en) * 2011-12-09 2012-07-04 中国建筑第二工程局有限公司 Tower crane foundation formed by using external walls of basement and supporting piles of foundation pit
CN205046568U (en) * 2015-09-17 2016-02-24 浙江中成建工集团有限公司 Three pile platform tower crane base apparatuses
CN105887918B (en) * 2015-12-31 2018-06-22 上海建工七建集团有限公司 A kind of tower crane and its construction method

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