CN112211214A - Construction method of beam-slab tower crane foundation structure - Google Patents
Construction method of beam-slab tower crane foundation structure Download PDFInfo
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- CN112211214A CN112211214A CN202010976447.8A CN202010976447A CN112211214A CN 112211214 A CN112211214 A CN 112211214A CN 202010976447 A CN202010976447 A CN 202010976447A CN 112211214 A CN112211214 A CN 112211214A
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- tower crane
- bearing plate
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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
- E02D27/42—Foundations for poles, masts or chimneys
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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
- E02D27/44—Foundations for machines, engines or ordnance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0023—Cast, i.e. in situ or in a mold or other formwork
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Abstract
The invention belongs to the technical field of construction engineering, and particularly relates to a construction method of a beam-slab tower crane foundation structure, which is used for solving the problems of bearing capacity and safety of the existing tower crane foundation structure. The construction method comprises the following steps: firstly, constructing support columns in a tower crane foundation structure, wherein the support columns are distributed in four corners; secondly, laying a bottom film of the support beam above the support column, binding reinforcing steel bars of the support beam, and accurately positioning and mounting the tower crane base and the connecting piece; constructing a side mold of the support beam, and constructing a bottom mold of the bearing plate above the support beam; fourthly, binding the steel bars of the bearing plate, and integrally pouring the concrete of the supporting beam and the bearing plate after the mold is sealed to finish the construction of the tower crane foundation structure. The supporting beam is used as a vertical bearing member of the tower crane foundation, and the bearing plate and the reinforcing steel bars on the upper part of the supporting beam are used for jointly resisting tension, so that the structural consumption of tower crane foundation materials is reduced while the integrity of the tower crane foundation is ensured, and the cost is saved; and the bearing plate is utilized to provide safety protection for the operating personnel below the tower crane foundation.
Description
Technical Field
The invention belongs to the technical field of construction of constructional engineering, and particularly relates to a construction method of a beam-slab tower crane foundation structure.
Background
In the field of foundation pit engineering, a floor type tower crane foundation is generally adopted, and a bearing platform type foundation, a cross beam and the like are mainly adopted. The bearing platform is an ultra-thick plate type structure, has excellent integrity and consumes a large amount of concrete materials. The cross beam equal-beam tower crane foundation mainly utilizes beams as bearing structures, and the foundation beams basically and independently bear loads, so that the integrity is poor; due to the long-time circular operation of the tower crane, the scrapping of the whole foundation beam is easily caused by the local problem on one beam; in addition, the lower part of the tower crane foundation usually needs construction operation, and a cavity between beams easily causes potential safety hazards to constructors on the lower part of the tower crane foundation during tower crane operation, and protective measures need to be added. When the tower crane is combined with operation, one end of the base of the tower crane is usually pulled and the other end is pressed, and the characteristics of load distribution of cyclic reciprocation require that the lower part and the upper part of the section of the tower crane foundation have better tensile property at the same time. Therefore, the bearing platform type foundation needs to ensure the thickness of the section of the foundation, the beam type tower crane foundation needs to ensure the height of the section and the reinforcing bars to ensure the bearing capacity of the tower crane foundation, and the tower crane foundation is not designed according to the actual stress of the tower crane foundation in structure.
Disclosure of Invention
Aiming at the problems that the existing tower crane foundation structure has certain defects in stress and is not economical, practical, safe and reliable, the construction method of the optimized beam-slab tower crane foundation structure is provided, the bearing capacity and the safety are ensured, and meanwhile, the cost is saved.
In order to solve the technical problems, the invention comprises the following technical scheme:
a construction method of a beam-slab tower crane foundation structure comprises the following steps:
s1, determining the plane position of the tower crane according to design requirements, and constructing support columns in the foundation structure of the tower crane, wherein the support columns are distributed at four corners;
s2, paving a bottom film of the support beam above the support column, binding reinforcing steel bars of the support beam, and accurately positioning and mounting the tower crane base and the connecting piece thereof according to design requirements;
step S3, constructing a side mold of the support beam, and constructing a bottom mold of the bearing plate above the support beam;
and step S4, binding the steel bars of the bearing plate, and integrally pouring the support beam and the concrete of the bearing plate after the mold is sealed to finish the construction of the tower crane foundation structure.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a construction method of a beam-slab tower crane foundation structure, which comprises the following steps of constructing support columns, support beams and bearing plates of a tower crane from bottom to top in sequence, wherein the support columns are distributed in four corners, the support beams are arranged above the support columns, and the support beams are arranged in a cross manner; the bearing platform plate is positioned above the supporting beam, and after the reinforcing steel bars of the supporting beam and the reinforcing steel bars of the bearing platform plate are bound, the supporting beam and the bearing platform plate are integrally poured, so that the supporting beam and the bearing platform plate form an integrated structure, and the stress stability of the whole system is ensured. The bearing plate is used for arranging a tower crane base, and the tower crane base is positioned in the middle of the bearing plate. By optimizing the existing tower crane foundation structure and taking the advantages of a bearing platform type (plate type) and a beam type foundation structure, the supporting beam is used as a vertical bearing member, and the bearing platform plate and the upper reinforcing steel bar of the supporting beam are jointly used for resisting tension, so that the structural consumption of tower crane foundation materials is reduced while the integrity of the tower crane foundation is ensured, and the cost is saved; and the bearing plate is used for reliably protecting the operating personnel below the tower crane foundation. The tower crane foundation structure manufactured by the construction method belongs to a beam-slab structure integrating the advantages of bearing platforms and beams, ensures safety and integrity, has better economy and has good popularization and application prospects.
Furthermore, the support beams are crossed to form a two-character superposition type or a fork type, so that different installation environments can be adapted.
Further, in order to guarantee the installation firmness of the tower crane base, the connecting piece in the step S2 is a high-strength bolt or a tower crane foundation anchor foot, and a reinforcing rib is arranged at the joint of the side face of the tower crane base and the bearing plate.
Further, in order to ensure that the tower crane base and the bearing plate are fixedly connected, the accurate installation of the tower crane base is realized, the tower crane base and the bearing plate are fixed through anchor bolts, and the tower crane base is wrapped in the supporting beam.
Further, according to the design requirement, in order to satisfy the tower crane load requirement, the thickness of the bearing plate is 200-300 mm.
Drawings
FIG. 1 is a schematic structural diagram of a tower crane foundation structure completed in the construction method of the beam-slab tower crane foundation structure according to the embodiment of the invention;
FIG. 2 is a schematic view illustrating connection between a forked support beam and a bearing plate in the construction method of the beam-slab tower crane foundation structure according to the embodiment of the invention;
fig. 3 is a plan view of a two-character superposition type support beam in the construction method of the beam-slab tower crane foundation structure in the embodiment of the invention.
In the figure:
1-a tower crane base; 2-a bearing plate; 3-a support beam; 4-support column.
Detailed Description
The construction method of the beam-slab tower crane foundation structure provided by the invention is further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent in conjunction with the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. For convenience of description, the directions of "up" and "down" described below are the same as the directions of "up" and "down" in the drawings, but this is not a limitation of the technical solution of the present invention.
Example one
Referring to fig. 1 to fig. 3, the present embodiment provides a construction method of a beam-slab tower crane foundation structure of the present invention.
The construction method comprises the following steps:
and S1, determining the plane position of the tower crane according to the field condition and the hoisting requirement, constructing support columns 4 in the foundation structure of the tower crane, and distributing the support columns 4 in four corners.
And S2, laying a bottom film of the support beam 3 above the support column 4, binding reinforcing steel bars of the support beam 3, accurately positioning and installing the tower crane base 1 and a connecting piece thereof according to design requirements, wherein the connecting piece is usually a high-strength bolt or a tower crane foundation anchor foot.
Step S3, constructing a side form of the support beam 3, and constructing a bottom form of the bearing plate 2 above the support beam 3;
and step S4, binding the steel bars of the bearing plate 2, and integrally pouring the support beam 3 and the concrete of the bearing plate 2 after the mold is sealed to finish the construction of the tower crane foundation structure.
Of course, in step S4, after the tower crane foundation structure is constructed, the tower crane may be installed after the strength of the conditioned concrete reaches 80%, and the tower crane may start the hoisting operation only after the strength of the conditioned concrete reaches 100%.
The cross section sizes and the reinforcing bars of the bearing plate 2 and the supporting beam 3 are determined by calculation according to the load of the tower crane, and the thickness of the bearing plate 2 is preferably 200-300 mm.
The tower crane foundation structure constructed by the construction method of the embodiment sequentially comprises support columns 4, support beams 3 and a bearing plate 2 from bottom to top, wherein the support columns 4 are distributed in four corners, the support beams 3 are arranged above the support columns 4, and the support beams 3 are arranged in a cross manner; the bearing plate 2 is positioned above the supporting beam 3 and used for arranging the tower crane base 1, and the tower crane base 1 is positioned in the middle of the bearing plate 2.
In the embodiment, more preferably, the tower crane foundation support beam 3 and the bearing plate 2 can be lapped on a beam or a column of a main structure of a building or a structure in addition to using the support column 4 as a vertical bearing structure.
In the present embodiment, it is more preferable that the support beams 3 are crossed to form a two-letter superposition type or a cross type. Thereby being capable of adapting to different installation environments.
In this embodiment, more preferably, in order to ensure the installation firmness of the tower crane base 1, the connecting member in step S2 is a high-strength bolt or a tower crane foundation anchor foot, and a reinforcing rib is disposed at a connection position of the side surface of the tower crane base 1 and the bearing plate 2.
In the present embodiment, it is more preferable that the support column 4 includes a concrete cast-in-place pile, a steel lattice column, or a steel reinforced concrete column. The specific style is determined according to construction requirements.
In this embodiment, more preferably, in order to guarantee to form fixed connection between tower crane base 1 and the bearing platform board 2, realize the accurate installation of tower crane base 1, it is fixed through the crab-bolt between tower crane base 1 and the bearing platform board 2, and tower crane base 1 wraps up in a supporting beam 3.
Particularly, through optimizing current tower crane foundation structure, draw the advantage of cushion cap formula (board-like) and beam type foundation structure, utilize supporting beam 3 as vertical bearing member, utilize cushion cap board 2, supporting beam 3 upper portion reinforcing bar to pull jointly, reduce tower crane foundation material structure quantity when guaranteeing tower crane foundation wholeness, when the cost is practiced thrift, utilize cushion cap board 2 to regard as reliable safety protection one to tower crane foundation below operation personnel, give other people the impression simultaneously and step on more and the heaviness. The tower crane foundation structure has better economy and good popularization and application prospect while ensuring safety and integrity.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A construction method of a beam-slab tower crane foundation structure is characterized by comprising the following steps:
s1, determining the plane position of the tower crane according to design requirements, and constructing support columns in the foundation structure of the tower crane, wherein the support columns are distributed at four corners;
s2, paving a bottom film of the support beam above the support column, binding reinforcing steel bars of the support beam, and accurately positioning and mounting the tower crane base and the connecting piece thereof according to design requirements;
step S3, constructing a side mold of the support beam, and constructing a bottom mold of the bearing plate above the support beam;
and step S4, binding the steel bars of the bearing plate, and integrally pouring the support beam and the concrete of the bearing plate after the mold is sealed to finish the construction of the tower crane foundation structure.
2. The construction method according to claim 1, wherein the support beams are crossed to form a double-letter superposition type or a cross type.
3. The construction method according to claim 1, wherein in the step S2, the connecting piece is a high-strength bolt or an anchor foot of a tower crane foundation, and a reinforcing rib is arranged at the joint of the side surface of the tower crane base and the bearing plate.
4. The construction method according to claim 1, wherein in the step S4, the tower crane base is fixed to the bearing plate by an anchor bolt, and the tower crane base is wrapped in the support beam.
5. The construction method according to claim 1, wherein the thickness of the cap plate is 200 to 300 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010976447.8A CN112211214A (en) | 2020-09-16 | 2020-09-16 | Construction method of beam-slab tower crane foundation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010976447.8A CN112211214A (en) | 2020-09-16 | 2020-09-16 | Construction method of beam-slab tower crane foundation structure |
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| CN112211214A true CN112211214A (en) | 2021-01-12 |
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| CN202010976447.8A Pending CN112211214A (en) | 2020-09-16 | 2020-09-16 | Construction method of beam-slab tower crane foundation structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011009592A1 (en) * | 2011-01-27 | 2012-08-02 | Liebherr-Werk Biberach Gmbh | Foundation anchoring for working machine |
| CN203256761U (en) * | 2013-05-17 | 2013-10-30 | 中建八局第三建设有限公司 | Tower crane foundation arranged on top plate of basement |
| CN105649103A (en) * | 2016-03-24 | 2016-06-08 | 广西建工集团第五建筑工程有限责任公司 | Pile-beam structure integrated tower crane foundation structure and construction method thereof |
| CN106088131A (en) * | 2016-06-15 | 2016-11-09 | 中国建筑第八工程局有限公司 | Armored concrete cross tower crane and construction method thereof |
| CN211006742U (en) * | 2019-09-27 | 2020-07-14 | 中交第三公路工程局有限公司 | Bearing platform beam type pile-free tower crane foundation |
-
2020
- 2020-09-16 CN CN202010976447.8A patent/CN112211214A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011009592A1 (en) * | 2011-01-27 | 2012-08-02 | Liebherr-Werk Biberach Gmbh | Foundation anchoring for working machine |
| CN203256761U (en) * | 2013-05-17 | 2013-10-30 | 中建八局第三建设有限公司 | Tower crane foundation arranged on top plate of basement |
| CN105649103A (en) * | 2016-03-24 | 2016-06-08 | 广西建工集团第五建筑工程有限责任公司 | Pile-beam structure integrated tower crane foundation structure and construction method thereof |
| CN106088131A (en) * | 2016-06-15 | 2016-11-09 | 中国建筑第八工程局有限公司 | Armored concrete cross tower crane and construction method thereof |
| CN211006742U (en) * | 2019-09-27 | 2020-07-14 | 中交第三公路工程局有限公司 | Bearing platform beam type pile-free tower crane foundation |
Non-Patent Citations (1)
| Title |
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| 邓星书等: "高桩承台塔吊基础在工程中的应用", 《天津建设科技》 * |
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Application publication date: 20210112 |