CN101709584A - Reinforced concrete foundation for mounting assembled tower crane - Google Patents
Reinforced concrete foundation for mounting assembled tower crane Download PDFInfo
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- CN101709584A CN101709584A CN200910190914A CN200910190914A CN101709584A CN 101709584 A CN101709584 A CN 101709584A CN 200910190914 A CN200910190914 A CN 200910190914A CN 200910190914 A CN200910190914 A CN 200910190914A CN 101709584 A CN101709584 A CN 101709584A
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Abstract
The invention relates to a reinforced concrete foundation for mounting an assembled tower crane, which is characterized by comprising eight rectangular reinforced concrete blocks of a completely identical shape and in a completely identical size, wherein every four rectangular reinforced concrete blocks are encircled into a rectangular-ambulatory-plane structure in an identical plane; the two rectangular-ambulatory-plane structures are superposed in a way that one is arranged above the other; every two adjacent rectangular reinforced concrete blocks are mutually staggered around the centre of the corresponding rectangular-ambulatory-plane structure for a phase angle of 90 degrees so that each rectangular reinforced concrete block of an upper layer presses the two rectangular reinforced concrete blocks of a lower layer; each rectangular reinforced concrete block is provided with a plurality of pre-embedded connecting holes; the rectangular reinforced concrete blocks of the upper and lower layers run through a part of the pre-embedded connecting holes through a bolt set to be connected into a whole; and the other pre-embedded connecting holes are connected with a tower body structure of a tower crane through the bolt set. The technical scheme has the characteristics of simple structure, good chemical property due to the rectangular-ambulatory-plane structures, quick and convenient mounting and disassembly and remarkable economical and social effect.
Description
Technical field
The invention belongs to the realm of building construction, be specifically related to a kind of reinforced concrete foundation that the tower machine is installed usefulness that is used for.
Background technology
Fixed base tower crane (being called for short the tower machine) is the most general vertical transport instrument that uses in the construction project.The design of foundation for tower crane is to guarantee tower machine safety and the normal important step of using.
Foundation for tower crane commonly used at present is the fixed column foot of cast in situs steel concrete, and main pattern has right-angled intersection beam type, right-angled intersection and square combined type, square plate formula, four jiaos of pier formulas etc.By research, find that there is following deficiency in traditional foundation for tower crane to these foundation for tower crane:
(1) long in time limit.Remove on basis after foundation dredging, basic making, concrete curing and even tower machine are finished using, all need take a long time.Foundation for tower crane construction to maintenance, needs 15-20 days from soil excavation or backfill, reinforcing bar binding, concreting at least, and the tower machine can not in time be installed operation, and the duration is affected.
(2) expense height.All need spend more expense from the building waste disposal on foundation excavation, basic making, concrete curing, the basis dismounting of finishing using and waste and old basis.After the transition of tower machine, need strike cutter, handle, cause the significant wastage of manpower and materials discarded basis.According to measuring and calculating, adopt average every the tower machine of cast in situs steel concrete immobilizing foundation to need 2.6 ten thousand yuan of RMB (comprehensive cost) every year approximately.
(3) do not reach civilized construction and environmental protection requirement.The modernization construction requirement keeps job site good working environment, hygienic conditions and order of work.Field, job site with standard holds, and keeps the clean and tidy health of operating environment, reduces the influence of construction to surrounding resident and environment.On-the-spot cast-in-situ steel reinforced concrete column foot inevitably can influence surrounding environment, produces building waste, does not reach civilized construction and requirement on environmental protection.
(4) on-the-spot cast-in-place fixedly foundation for tower crane is of a great variety, and form is different, and versatility is poor, and relative fixed generally can not be reused again.
(5) influence the later stage engineering construction, be difficult for handling.If facilities such as pipeline, septic tank are arranged in the foundation for tower crane position, need cost manually to pound cutter or explosion treatment in a large number.
(6) the foundation for tower crane characteristic value of foundation bearing capacity is had relatively high expectations, general producer requires more than or equal to 200Kpa, and the foundation soil of job site generally is difficult to reach requirement, need make ground and handle and could satisfy.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of pre-formed and can assemble the concrete prefabricated assembly unit foundation for tower crane of use.
The technical solution adopted for the present invention to solve the technical problems is: a kind of reinforced concrete foundation for mounting assembled tower crane, it is characterized in that: comprise that eight is block-shaped, the identical cuboid reinforced concrete block of size, per four described cuboid reinforced concrete blocks surround " a returning " font on same plane, two " returning " font structures stack up and down, on the position is corresponding, the cuboid reinforced concrete block of lower floor staggers along the center of " returning " font structure each other and 90 spends phase angles, makes the every cuboid reinforced concrete block on upper strata push down two cuboid reinforced concrete blocks of lower floor; Described cuboid reinforced concrete block is provided with a plurality of pre-buried connecting holes, the cuboid reinforced concrete block of upper and lower layer passes wherein a part of described pre-buried connecting hole by the bolt group and realizes being connected to each other and form wholely, and remaining pre-buried connecting hole can be connected with tower crane body of the tower structure by the bolt group.
Adopt technique scheme, the present invention is directed to the shortcoming and defect of cast in situs steel concrete foundation for fixed type tower crane, this paper has proposed concrete prefabricated assembly unit and has used the foundation for tower crane technology more, this technology is the reasonable combination, assembly unit by concrete prefabricated element and closely links to each other with pillar crane, with tower machine co-operation, can be used for the basis of multiple model tower machine.This foundation for tower crane has following advantage:
(1) on-the-spot installation period is short.Because foundation for tower crane finishes at produce in factory, transport the scene to after, only need the ground of job site is dealt with slightly, promptly sliceable installation need not be watered and be smash and maintenance, has shortened the foundation construction time greatly.
(2) use cost is low.Because foundation for tower crane is that batch production is prefabricated, on-site consolidation can be reused, the utilization rate height, and amortization charge is low.
(3) product quality height.Because product is factory normalization production, realized specialized continuous productive process, make, curing condition is superior, the built-in fitting accurate positioning, thereby product quality holds good security.
(4) not high to the basic foundation requirement for bearing capacity.The foundation bed section form is optimized for back-shaped by the square on tradition basis, basic cross section resistance moment and area of base have been increased, the foundation bed more reasonable stress, reduced the subsidiary stress of substrate, thereby less demanding to the foundation for tower crane bearing capacity of foundation soil, characteristic load bearing capacity only needs to get final product more than or equal to 120Kpa.
(5) meet civilized construction and requirement on environmental protection.On-site consolidation does not have noise, airborne dust, and is little to the surrounding resident influence; The on-the-spot integral assembling of product is convenient to the job site tissue, easily realizes keeping the field at job site good working environment, hygienic conditions, order of work and standard construction scene to hold, and keeps the requirement of the clean and tidy health of operating environment; Guarantee worker's safety and physical and mental health.Almost do not produce building waste.
(6) recycling rate of waterused height.Owing to be designed to multipurpose combined, can be used for multi-form tower machine, in case certain engineering is finished, the tower machine is transported, and concrete prefabricated assembly unit is many can be transported to new building site with foundation for tower crane, as is used in the tower machine of another kind of form, can adjust slightly according to its concrete condition, can pass through combination, assembly unit, form and the new supporting foundation for tower crane of tower machine, thereby make the utilization rates on basis of using more up to 100%.
Below in conjunction with drawings and Examples technical solution of the present invention is further specified.
Description of drawings
Fig. 1 is the substructure floor map of a kind of reinforced concrete foundation for mounting assembled tower crane of the present invention;
Fig. 2 is the superstructure floor map of a kind of reinforced concrete foundation for mounting assembled tower crane of the present invention.
The specific embodiment
What Fig. 1 provided is the substructure floor map of a kind of reinforced concrete foundation for mounting assembled tower crane of the present invention, 8 profiles and big or small identical cuboid reinforced concrete block, wherein cuboid reinforced concrete block 1, cuboid reinforced concrete block 2, cuboid reinforced concrete block 3, cuboid reinforced concrete block 4 surround " returning " font on same plane.
What Fig. 2 provided is the superstructure floor map of a kind of reinforced concrete foundation for mounting assembled tower crane of the present invention, and cuboid reinforced concrete block 5, cuboid reinforced concrete block 6, cuboid reinforced concrete block 7, cuboid reinforced concrete block 8 also surround " returning " font on same plane.Two " returning " fonts are stacked together up and down, wherein, the cuboid reinforced concrete block 6 on upper strata is pushed down the cuboid reinforced concrete block 2 and the cuboid reinforced concrete block 3 of lower floor, the cuboid reinforced concrete block 7 on upper strata is pushed down the cuboid reinforced concrete block 3 and the cuboid reinforced concrete block 4 of lower floor, the cuboid reinforced concrete block 8 on upper strata is pushed down the cuboid reinforced concrete block 4 and the cuboid reinforced concrete block 1 of lower floor, and the cuboid reinforced concrete block 5 on upper strata is pushed down the cuboid reinforced concrete block 1 and the cuboid reinforced concrete block 2 of lower floor.
One group of connecting hole 9 at the edge among Fig. 2 is used between the cuboid reinforced concrete block of upper and lower layer being connected to each other by bolt group (not shown) and forms an integral body.The cuboid reinforced concrete block that the one group of connecting hole 10 that is positioned at the middle part is used for upper and lower layer is connected with the realization of body of the tower structure (not shown) by bolt group (not shown).
Economic and Efficiency Analysis of the present invention: a celebrating river QTZ40 type 400KNM has underframe formula tower machine, adopts foundation for fixed type tower crane, and basic gross weight is 480kN, adopts the fixed basis of cast in situs steel concrete to need 1.3 ten thousand yuans approximately.Expenditure pattern: 20 side C35 commercial concretes, about 335 yuan/cubic metre of unit prices dig the basis cubic metre of earth and stone, reinforcing bar processing, colligation labour cost about 2000, about 1600 yuan of reinforcing bar expenses, about 2000 yuan of stone bolt expenses.Total cost=20 * 335+2000+1600+2000=12300 unit.By having enough to meet the need 2 calculating every year on average, cost approximately with 2.6 ten thousand yuans.And adopt the present invention by same number of turnover measuring and calculating, and to rent installation handling expense and only need 0.4 ten thousand yuans, average every tower machine can be reduced expenses 2.2 ten thousand yuans every year.Use to calculate in 12 years by tower machine and reduce expenses altogether in tower machine life cycle=ten thousand yuan of 12 * 2.2-1=25.4.10,000 yuan is concrete prefabricated assembly unit block cost expense in the formula.
Social benefit analysis of the present invention: compare with cast-in-place basis, scene, adopt whole tower machine of the present invention only to install and need 1-2 days, but about 15 days reductions of erection time, for building comes into operation, obtains economic benefit as early as possible and lay the foundation on time or in advance, the production of batch production streamline has reduced the operation of job site, has realized civilized construction.And can save a large amount of steel, cement, sandstone material and artificial.Greatly reduce a large amount of concrete rubbish that produce by foundation for fixed type tower crane, avoided the hidden obstacle of outdoor underground construction pipeline and greening.
Above embodiment only illustrates concrete application of the present invention; can not be interpreted as qualification to protection domain of the present invention; so long as adopt technical scheme of the present invention; perhaps only be to change or distortion, all fall among protection scope of the present invention by the routine that those of ordinary skill in the art can both make.
Claims (1)
1. reinforced concrete foundation for mounting assembled tower crane, it is characterized in that: comprise eight block-shaped, big or small identical cuboid reinforced concrete blocks, per four described cuboid reinforced concrete blocks surround " a returning " font on same plane, two " returning " font structures stack up and down, the cuboid reinforced concrete block of the corresponding upper and lower layer in position staggers along the center of " returning " font structure each other and 90 spends phase angles, makes the every cuboid reinforced concrete block on upper strata push down two cuboid reinforced concrete blocks of lower floor; Described cuboid reinforced concrete block is provided with a plurality of pre-buried connecting holes, the cuboid reinforced concrete block of upper and lower layer passes wherein a part of described pre-buried connecting hole by the bolt group and realizes being connected to each other and form wholely, and remaining pre-buried connecting hole can be connected with tower crane body of the tower structure by the bolt group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101909148A CN101709584B (en) | 2009-09-21 | 2009-09-21 | Reinforced concrete foundation for mounting assembled tower crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009101909148A CN101709584B (en) | 2009-09-21 | 2009-09-21 | Reinforced concrete foundation for mounting assembled tower crane |
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| CN101709584A true CN101709584A (en) | 2010-05-19 |
| CN101709584B CN101709584B (en) | 2011-07-20 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544587A (en) * | 2015-12-10 | 2016-05-04 | 上海建工一建集团有限公司 | Combined tower crane foundation and construction method thereof |
| CN108005099A (en) * | 2017-11-24 | 2018-05-08 | 国网江苏省电力公司南京供电公司 | A kind of shaft tower prefabricated assembled concrete stepped footing and its assembling method |
| CN108729465A (en) * | 2018-05-31 | 2018-11-02 | 东北电力大学 | A kind of the assembled tower crane and its building method prefabricated based on modularization |
-
2009
- 2009-09-21 CN CN2009101909148A patent/CN101709584B/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105544587A (en) * | 2015-12-10 | 2016-05-04 | 上海建工一建集团有限公司 | Combined tower crane foundation and construction method thereof |
| CN108005099A (en) * | 2017-11-24 | 2018-05-08 | 国网江苏省电力公司南京供电公司 | A kind of shaft tower prefabricated assembled concrete stepped footing and its assembling method |
| CN108005099B (en) * | 2017-11-24 | 2023-08-15 | 国网江苏省电力公司南京供电公司 | Prefabricated assembled concrete stepped foundation for pole tower and assembling method thereof |
| CN108729465A (en) * | 2018-05-31 | 2018-11-02 | 东北电力大学 | A kind of the assembled tower crane and its building method prefabricated based on modularization |
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| Publication number | Publication date |
|---|---|
| CN101709584B (en) | 2011-07-20 |
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Owner name: CCEG SECOND CONSTRUCTION CO., LTD. Free format text: FORMER OWNER: CHONGQING SECOND CONSTRUCTION CO., LTD. Effective date: 20110419 Owner name: CHONGQING CONSTRUCTION ENGINEERING GROUP CO., LTD. |
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Effective date of registration: 20110419 Address after: 400030 Chongqing Road, Shapingba District, Tian Chen Road, 56 Applicant after: CCEG Second Construction Co., Ltd. Co-applicant after: Chongqing Construction Engineering Group Co., Ltd. Address before: 400030 Chongqing Road, Shapingba District, Tian Chen Road, 56 Applicant before: Chongqing Second Construction Co., Ltd. |
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