CN204919566U - Soft soil area tower crane foundation construction supporting construction - Google Patents
Soft soil area tower crane foundation construction supporting construction Download PDFInfo
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- CN204919566U CN204919566U CN201520530422.XU CN201520530422U CN204919566U CN 204919566 U CN204919566 U CN 204919566U CN 201520530422 U CN201520530422 U CN 201520530422U CN 204919566 U CN204919566 U CN 204919566U
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- Prior art keywords
- open caisson
- tower crane
- collar tie
- shaft bottom
- tie beam
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Abstract
The utility model provides an under soft soil area tower crane foundation construction supporting construction, supporting construction are located the basement roof includes strut the open caisson, it includes that it keeps off native side wall, connects jing dingquanliang, the shaft bottom collar tie beam at the bottom of connecting the wall and the structure corner post of open caisson in order of wall crown in order to close the open caisson that forms all around in the tower crane basis earthwork to strut the open caisson, the size of strutting the open caisson suits with the basic size of tower crane, the structure corner post lies in the corner that two slice adjacent open caissons kept off native side wall, and the top of structure corner post is connected with jing dingquanliang's bottom, and the bottom of structure corner post is connected with the top of shaft bottom collar tie beam, wide narrow down on the section of shaft bottom collar tie beam, the inside wall of shaft bottom collar tie beam be strut the open caisson subside the sword limit. The utility model discloses can reduce work load when guaranteeing the construction progress, reduce cost has solved the tower crane and has inserted and installed a difficult difficult problem in advance.
Description
Technical field
The utility model relates to a kind of foundation supporting structure, particularly a kind of supporting and protection structure in the construction of soft clay area tower crane.
Background technology
Tower crane is as the indispensable a kind of vertical transport instrument of building operations, and there is decisive influence its set-up time to site operation progress and cost.In order to ensure the needs of construction period and tower crane construction technique, tower crane installation work need be inserted in advance, completes the installation work of tower crane construction and tower crane before pit earthwork excavation.In order to tower crane does not conflict with agent structure, general tower crane needs to be arranged on below basement floor constructions.
And in pit earthwork work progress, often run into the foundation condition of mucky soil, thus larger impact is produced on the working security of engineering and construction cost.If because the mobility of mucky soil is comparatively large, darker soil excavation easily causes landslide, thus makes engineering pile cave in, and after therefore need carrying out supporting to earth excavation, can carry out tower crane soil excavation.
Existing tower crane, general employing does not have supporting and protection structure to take the form directly made, foundation soil under this basis must reach some strength (can take cushion process to the general foundation soil not reaching requirement) can take this method, higher to the requirement of foundation soil.And for muck foundation soil, there is the unfavorable characteristics such as high-compressibility, mobility be large and do not reach desired strength, tower crane cannot use single footing form.
Utility model content
The purpose of this utility model is to provide a kind of soft clay area tower crane construction supporting structure, solve the technical problem that existing reinforced concrete independent foundation cannot use under the condition of muck foundation soil.
For achieving the above object, the utility model adopts following technical scheme:
A kind of soft clay area tower crane construction supporting structure, be positioned under basement roof, comprise supporting open caisson and bottom concrete, described supporting open caisson is included in the open caisson that tower crane earthwork surrounding encloses and keeps off native side wall, the well top beam on connection wall top in turn, shaft bottom collar tie beam in turn at the bottom of connection wall and the structure corner post of open caisson, the described size of supporting open caisson and the size of tower crane adapt, described structure corner post is positioned at the corner that adjacent two panels open caisson keeps off native side wall, the top of structure corner post is connected with the bottom of well top beam, the bottom of structure corner post is connected with the top of shaft bottom collar tie beam, the section of described shaft bottom collar tie beam is wide at the top and narrow at the bottom, the inside wall of shaft bottom collar tie beam is the sedimentation sword limit of supporting open caisson.
Described supporting open caisson is the knockdown supporting and protection structure of steel concrete and masonry, and it is the masonry structure that sand lime brick is built by laying bricks or stones that described open caisson keeps off native side wall, and described well top beam, shaft bottom collar tie beam and structure corner post are reinforced concrete structure.
Described shaft bottom collar tie beam section is that chamfer is trapezoidal, and described sedimentation sword limit is the trapezoidal hypotenuse of chamfer.
The lower side width of described shaft bottom collar tie beam section and the ratio of upper side edge width are 1/3 ~ 1/2.
The section upper side edge width of the section width of described well top beam, the section width of structure corner post and shaft bottom collar tie beam is all equal.
Open caisson between adjacent two structure corner posts keeps off the structure side column being provided with at least one steel concrete within native side wall, and the top of described structure side column is connected with the bottom of well top beam, and the bottom of structure side column is connected with the top of shaft bottom collar tie beam.
Width homogeneous phase etc. on the upside of the section width of described well top beam, the section width of structure corner post, the structure section width of side column and the section of shaft bottom collar tie beam.
Described open caisson keeps off native side wall relative shaft bottom collar tie beam and inside contracts to be formed and reserved smear slurry platform, smears on the upside of slurry platform, the outside in outside and well top beam that open caisson keeps off native side wall is coated with thickness and is less than the drag reduction cement sand bed smearing slurry platform width.
Compared with prior art the utility model has following characteristics and beneficial effect:
The utility model provides a kind of supporting and protection structure for the tower crane in mucky soil, can provide favourable operating space for tower crane Fast Installation, so effective accelerate engineering construction speed, guarantee the duration.
The utility model adopts the open caisson support pattern of the brick combination of steel concrete, supporting open caisson is in mucky soil, prominent heavy in order to prevent supporting and protection structure from occurring, supporting and protection structure wall built by laying bricks or stones by the sand lime brick that elite density is lower, in order to ensure the stability of supporting and protection structure, supporting wall and bight arrange reinforced concrete structural column, and the upper and lower position of supporting and protection structure arranges reinforced concrete circle beam.Such a configuration obviates because larger, the most engineering pile foundation of mucky soil mobility adopts prefabricated tubular pile, stake top mark high when tower crane bottom surface is with first-class unfavorable factor, supporting and protection structure is on the impact of engineering pile generation around.
The utility model utilizes reinforced concrete frame stability, and anti-shear ability is comparatively strong, and open caisson keeps off the effect that native side wall plays main gear soil, and little sand lime brick density is less, effectively alleviates open caisson deadweight, prevents supporting open caisson prominent heavy.If the major structure of construction in supporting and protection structure and later stage clashes, be easier to reject.
Shaft bottom collar tie beam does in echelon by the utility model, and supporting and protection structure can be prevented prominent heavy, can prevent from again, due to the change of soil property situation, cannot sinking, and through calculating, supporting open caisson can be leaned on to conduct oneself with dignity to sink.After supporting well sinking to design elevation, effective supporting is carried out to silt soil while, can also as the template of tower crane construction, reduce the input of mould material, environmental benefit is obvious.
Tower crane construction of the present utility model adopts open caisson supporting to construct, when the unfavorable foundation soil condition overcoming mucky soil carries out the work that tower crane construction and tower crane install, the shortcoming that the constructional difficulties larger engineering time is longer, the utility model construction sequence is simple, reliable in quality, safety factor is high, open caisson utilizes self gravitation can sink under roadbed of alluvial silt soil condition, and the back cover work of open caisson is carried out in time by design elevation, not only shorten the construction period, installation in advance and the tower crane stake of tower crane can also be ensured, the protection of engineering pile, decrease construction cost to greatest extent, improve project yield rate.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is the plan structure schematic diagram of the utility model supporting.
Fig. 2 is A-A cross-sectional view in Fig. 1.
Fig. 3 is the thin portion structural representation in left side in Fig. 2.
Fig. 4 is the structural representation of shaft bottom collar tie beam.
Fig. 5 is the structural representation of structure corner post or side column.
Fig. 6 is the structural representation of well top beam.
Fig. 7 is the initial schematic diagram of sinking of supporting and protection structure of the present utility model.
Fig. 8 is the schematic diagram in the sinking of supporting and protection structure of the present utility model.
The state diagram that Fig. 9 is the sinking of supporting and protection structure of the present utility model, back cover completes.
Reference numeral: 1-open caisson keeps off native side wall, 2-well top beam, 3-shaft bottom collar tie beam, 3.1-sedimentation sword limit, 4-constructs corner post, 5-constructs side column, 6-drag reduction cement sand bed, 7-smear slurry platform, 8-shaft bottom collar tie beam stirrup, 9-shaft bottom collar tie beam principal rod, 10-column tie-bar, 11-post principal rod, 12-well top beam stirrup, 13-well top beam principal rod, 14-bottom concrete.
Detailed description of the invention
Embodiment one, a kind of soft clay area tower crane construction supporting structure, be positioned under basement roof, comprise supporting open caisson and bottom concrete 14, described supporting open caisson is included in the open caisson that tower crane earthwork surrounding encloses and keeps off native side wall 1, the well top beam 2 on connection wall top in turn, shaft bottom collar tie beam 3 in turn at the bottom of connection wall and the structure corner post 4 of open caisson, the described size of supporting open caisson and the size of tower crane adapt, described structure corner post 4 is positioned at the corner that adjacent two panels open caisson keeps off native side wall 1, the top of structure corner post 4 is connected with the bottom of well top beam 2, the bottom of structure corner post 4 is connected with the top of shaft bottom collar tie beam 3, the section of described shaft bottom collar tie beam 3 is wide at the top and narrow at the bottom, the inside wall of shaft bottom collar tie beam 3 is sedimentation sword limits 3.1 of supporting open caisson.
Described supporting open caisson is the knockdown supporting and protection structure of steel concrete and masonry, and described open caisson keeps off the masonry structure that native side wall 1 is built by laying bricks or stones for sand lime brick, and described well top beam 2, shaft bottom collar tie beam 3 and structure corner post 4 are reinforced concrete structure.
Described shaft bottom collar tie beam 3 section is that chamfer is trapezoidal, and described sedimentation sword limit 3.1 is the trapezoidal hypotenuse of chamfer.
Shown in Fig. 2-Fig. 6, on the upside of the section width b of well top beam 2, the structure section width a of corner post 4 and the section of shaft bottom collar tie beam 3, width c=p+q is all equal, b=a=c=370mm, width p=150mm on the downside of the section of shaft bottom collar tie beam 3, the Breadth Maximum q=220mm of hypotenuse 3.1.
Shown in Figure 2, the overall height h=1800mm of supporting and protection structure, the height sum that specifically see shown in Fig. 4 and Fig. 6, the overall height of supporting and protection structure is the height n=300mm of well top beam 2, the height m=400mm of shaft bottom collar tie beam 3 and open caisson keep off native side wall 1.
Shown in Figure 1, need the length of the tower crane earthwork of excavating and width to be e=5000mm in the present embodiment.
Shown in Fig. 1-Fig. 3, described open caisson keep off native side wall 1 relatively shaft bottom collar tie beam 3 inside contract to be formed and reserved smear slurry platform 7, smear the width t=30mm of slurry platform, smear the slurry upside of platform 7, the outside in outside and well top beam 2 that open caisson keeps off native side wall 1 is coated with thickness and is less than the drag reduction cement sand bed 6 smearing slurry platform width.In the present embodiment, drag reduction cement sand bed 6 is cement mortar of the 1:2 of thickness d=15mm.
Embodiment two is shown in Figure 1, with embodiment one unlike, adjacent two structure corner posts 4 between open caissons keep off the structure side column 5 being provided with at least one steel concrete within native side wall 1, in this example for arrange one structure side column 5.The top of described structure side column 5 is connected with the bottom of well top beam 2, and the bottom of structure side column 5 is connected with the top of shaft bottom collar tie beam 3.
Shown in Fig. 2-Fig. 6, the lower side width of shaft bottom collar tie beam section and the ratio of upper side edge width are generally 1/3 ~ 1/2, ensure the gradient on sedimentation sword limit 3.1, supporting open caisson is sunk smoothly.The section width a of the section width b of well top beam 2, the section width a of structure corner post 4, structure the side column 5 and section upper side edge width c=p+q of shaft bottom collar tie beam 3 is all equal, b=a=c=370mm, the section lower side width p=150mm of shaft bottom collar tie beam 3, the horizontal projection length q=220mm on sedimentation sword limit 3.1.
The construction method of these two kinds of soft clay area tower crane construction supporting structures above, construction sequence is as follows:
Step one, smooth location, surveying setting-out: first according to tower crane location and basic engineering drawing, place within the scope of excavation is carried out smooth, ensure the accuracy of line setting, SURVEYING CONTROL NETWORK and ordnance bench mark are set, for the foundation of line setting, the upper and lower bank line lime of foundation ditch are marked, reduce the making height of open caisson construction as far as possible, forbid the earthwork to be backbreak.
Step 2, the excavation first floor earthwork: the first floor earthwork adopts puts slope excavation, and the gradient of putting slope is determined according to the character of on-the-spot soil.
Step 3: construction supporting open caisson bed course: after first floor soil excavation to design elevation, undertaken smooth by needing the earthwork making open caisson and tower crane position, the accurate unwrapping wire in the position of concreting bed course will be needed, build blinding concrete, and on bed course, the position of shaft bottom collar tie beam arranges brick seat.
Step 4: construction shaft bottom collar tie beam: after cushion construction, carry out the colligation of shaft bottom collar tie beam principal rod 9 and shaft bottom collar tie beam stirrup 8, shaft bottom ring beam template install and shaft bottom collar tie beam is concrete builds, and the joint bar of reserved constructional column.
Step 5: build open caisson by laying bricks or stones and keep off native side wall: after the concreting of shaft bottom collar tie beam completes, carry out open caisson and keep off building by laying bricks or stones of native side wall, the contrast locating shaft bottom collar tie beam that open caisson keeps off native side wall inside contracts reservedly smears slurry platform, the width smearing slurry platform in this example is reserved as 30mm, the body of wall at constructional column position will be reserved and build out horse tooth trough, first step back into.
Step 6: simultaneously construct well top beam and constructional column: open caisson keep off native side wall reach predetermined build height by laying bricks or stones after, carry out well top beam principal rod 13, shaft bottom collar tie beam stirrup 12, the column tie-bar 10 of constructional column, the colligation of post principal rod 11, the installing and well top beam and constructional column is concrete builds of well top beam and constructional column template.
Now support construction completes, shown in Figure 7.
Step 7: smear drag reduction cement mortar: jointly smear drag reduction cement sand bed, to reduce the frictional resistance in well sinking process in the outside of smearing on slurry platform, open caisson keeps off native side wall and well top beam.
Step 8: supporting well sinking: after drag reduction cement sand bed solidifies, at the outside brush suds of drag reduction cement sand bed, reduces further the frictional resistance of open caisson and Tu Bi, and symmetry abolish the brick seat and concrete cushion of constructing in step 3.
Step 9: the earthwork in excavation supporting open caisson: adopt machinery to coordinate excavated by manual work local method that supporting open caisson is sunk under gravity, dig gradually to the borehole wall from the middle of the earthwork that supporting open caisson encloses, the every layer of thick about 500mm that cuts the earth, about 500mm earth embankment is retained around sedimentation sword pin and shaft bottom collar tie beam, and then along supporting open caisson the borehole wall successively comprehensively, symmetrical, skiving soil layer equably, cut about 100mm at every turn, cannot stand the extruding of sedimentation sword pin when soil layer and break, the just uniform vertical soil compaction sinking under Gravitative Loads of supporting open caisson.Open caisson process is shown in Figure 8.
Step 10: back cover is constructed: until supporting well sinking to during close to design elevation, rapidly well internal water accumulation is got rid of clean, and the earthwork of sedimentation sword foot position is excavated be not less than 100mm, to lay bottom concrete reinforcing bar, and carry out building of bottom concrete 14.Back cover process is shown in Figure 9.
Claims (8)
1. a soft clay area tower crane construction supporting structure, be positioned under basement roof, it is characterized in that: comprise supporting open caisson and bottom concrete (14), described supporting open caisson is included in the open caisson that tower crane earthwork surrounding encloses and keeps off native side wall (1), the well top beam (2) on connection wall top in turn, shaft bottom collar tie beam (3) in turn at the bottom of connection wall and the structure corner post (4) of open caisson, the described size of supporting open caisson and the size of tower crane adapt, described structure corner post (4) is positioned at the corner that adjacent two panels open caisson keeps off native side wall (1), the top of structure corner post (4) is connected with the bottom of well top beam (2), the bottom of structure corner post (4) is connected with the top of shaft bottom collar tie beam (3), the section in described shaft bottom collar tie beam (3) is wide at the top and narrow at the bottom, the inside wall of shaft bottom collar tie beam (3) is the sedimentation sword limit (3.1) of supporting open caisson.
2. soft clay area according to claim 1 tower crane construction supporting structure, it is characterized in that: described supporting open caisson is the knockdown supporting and protection structure of steel concrete and masonry, described open caisson keeps off the masonry structure that native side wall (1) is built by laying bricks or stones for sand lime brick, and described well top beam (2), shaft bottom collar tie beam (3) and structure corner post (4) are reinforced concrete structure.
3. soft clay area according to claim 1 tower crane construction supporting structure, is characterized in that: described shaft bottom collar tie beam (3) section is that chamfer is trapezoidal, and described sedimentation sword limit (3.1) is the trapezoidal hypotenuse of chamfer.
4. the soft clay area tower crane construction supporting structure according to claim 1-3 any one, is characterized in that: the lower side width of described shaft bottom collar tie beam (3) section and the ratio of upper side edge width are 1/3 ~ 1/2.
5. the soft clay area tower crane construction supporting structure according to claim 1-3 any one, is characterized in that: the section upper side edge width of the section width of described well top beam (2), the section width of structure corner post (4) and shaft bottom collar tie beam (3) is all equal.
6. the soft clay area tower crane construction supporting structure according to claim 1-3 any one, it is characterized in that: the open caisson between adjacent two structures corner post (4) keeps off the structure side column (5) being provided with at least one steel concrete within native side wall (1), the top of described structure side column (5) is connected with the bottom of well top beam (2), and the bottom of structure side column (5) is connected with the top of shaft bottom collar tie beam (3).
7. soft clay area according to claim 6 tower crane construction supporting structure, is characterized in that: width homogeneous phase etc. on the upside of the section width of described well top beam (2), the section width of structure corner post (4), the section width of structure side column (5) and the section of shaft bottom collar tie beam (3).
8. soft clay area according to claim 1 tower crane construction supporting structure, it is characterized in that: described open caisson keeps off native side wall (1) and relatively inside contracts to be formed and reserved smear slurry platform (7) in shaft bottom collar tie beam (3), smear the upside of slurry platform (7), the outside in outside and well top beam (2) that open caisson keeps off native side wall (1) is coated with thickness and is less than the drag reduction cement sand bed (6) smearing slurry platform width.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530422.XU CN204919566U (en) | 2015-07-21 | 2015-07-21 | Soft soil area tower crane foundation construction supporting construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520530422.XU CN204919566U (en) | 2015-07-21 | 2015-07-21 | Soft soil area tower crane foundation construction supporting construction |
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| CN204919566U true CN204919566U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520530422.XU Expired - Fee Related CN204919566U (en) | 2015-07-21 | 2015-07-21 | Soft soil area tower crane foundation construction supporting construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963348A (en) * | 2015-07-21 | 2015-10-07 | 中国建筑一局(集团)有限公司 | Soft soil area tower crane foundation construction supporting structure and construction method thereof |
| CN111794265A (en) * | 2020-05-29 | 2020-10-20 | 五冶集团上海有限公司 | Method for constructing equipment foundation by isolating sludge |
| CN111794266A (en) * | 2020-05-29 | 2020-10-20 | 五冶集团上海有限公司 | Construction method of equipment foundation under silt geological condition in beach backfilling area |
-
2015
- 2015-07-21 CN CN201520530422.XU patent/CN204919566U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104963348A (en) * | 2015-07-21 | 2015-10-07 | 中国建筑一局(集团)有限公司 | Soft soil area tower crane foundation construction supporting structure and construction method thereof |
| CN104963348B (en) * | 2015-07-21 | 2017-03-01 | 中国建筑一局(集团)有限公司 | A kind of soft clay area tower crane construction supporting structure and its construction method |
| CN111794265A (en) * | 2020-05-29 | 2020-10-20 | 五冶集团上海有限公司 | Method for constructing equipment foundation by isolating sludge |
| CN111794266A (en) * | 2020-05-29 | 2020-10-20 | 五冶集团上海有限公司 | Construction method of equipment foundation under silt geological condition in beach backfilling area |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20190721 |