CN109653236A - Tower-crane foundation structure for restricted clearance - Google Patents

Tower-crane foundation structure for restricted clearance Download PDF

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Publication number
CN109653236A
CN109653236A CN201910087963.2A CN201910087963A CN109653236A CN 109653236 A CN109653236 A CN 109653236A CN 201910087963 A CN201910087963 A CN 201910087963A CN 109653236 A CN109653236 A CN 109653236A
Authority
CN
China
Prior art keywords
tower
steel
steel pipe
pipe column
cushion cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910087963.2A
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Chinese (zh)
Inventor
许磊
朱茂兵
陈新
史文强
邵慧强
郑福涛
汪国兵
杨键
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FORTH ENGINEERING OF ZHONGTIE BRIDGE BUREAU CO LTD
4th Engineering Co Ltd of MBEC
Original Assignee
FORTH ENGINEERING OF ZHONGTIE BRIDGE BUREAU CO LTD
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by FORTH ENGINEERING OF ZHONGTIE BRIDGE BUREAU CO LTD filed Critical FORTH ENGINEERING OF ZHONGTIE BRIDGE BUREAU CO LTD
Priority to CN201910087963.2A priority Critical patent/CN109653236A/en
Publication of CN109653236A publication Critical patent/CN109653236A/en
Pending legal-status Critical Current

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Classifications

    • 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 discloses a kind of tower-crane foundation structures for restricted clearance, are related to technical field of bridge construction.The tower-crane foundation structure includes cushion cap and the pier shaft that is arranged on cushion cap, it further include steel pipe column and two steel I-beams, steel pipe column one end is inclined outwardly by cushion cap built-in fitting and is mounted on cushion cap, the steel pipe column other end is connect with two steel I-beams, two steel I-beam one end are connect with pier shaft built-in fitting, and two steel I-beams are arranged on the same horizontal plane.The present invention is using the steel pipe column for being inclined outwardly setting, by the substantially horizontally disposed top in cushion cap of two steel I-beams, steel I-beam, steel pipe column, cushion cap and pier shaft composition one are inverted trapezoidal, not only increase the structural strength of tower crane, the mounting table of tower crane is also formed using two horizontal steel I-beams, on the cushion cap that the weight of tower crane is directly fallen within to restricted clearance, realizes that tower crane supporting leg is located on the outside of cushion cap, greatly reduce the difficulty of construction of the tower-crane foundation structure of restricted clearance.

Description

Tower-crane foundation structure for restricted clearance
Technical field
The present invention relates to technical field of bridge construction, and in particular to the tower-crane foundation structure for restricted clearance.
Background technique
Tower crane is most common a kind of lifting equipment on construction site, is used to the working reinforcing bar of handling, wooden flute, coagulation The raw material of the constructions such as soil, steel pipe.In the application of all kinds of bridge constructions, tower crane is typically mounted on ground base cushion cap, directly Tower crane built-in fitting is pre-buried in bearing platform construction, fixed by the pre-buried form of fang bolt, be further added by many standard knots and Attachment device.Due to bulky, the weight weight of tower crane, foundation platform is needed there are enough spaces to be arranged for tower crane.
Currently, can not directly install tower crane on the pier cap of limited space, tower crane needs to be set in water On steel-pipe pile, steel cofferdam or Extended chemotherapy, causes tower crane in setting, have the disadvantage that
1) large lifting equipment is needed to plug steel-pipe pile in water by cushion cap, construction interference is big, needs a large amount of steel pipe For stake inserting piling into soil, construction material is more, in addition steel pipe pile foundation the characteristics of there is typically further insufficient rigidities;
2) tower crane on cofferdam is set, is only applicable to Double-Wall Steel Boxed Cofferdam, and cofferdam need to be fixedly connected with cushion cap, Before tower crane dismounting, cofferdam system cannot be removed, and influence the installation of cushion cap accessory structure, long construction period;
3) Extended chemotherapy is only applicable to the preferable land bridge of geological condition, and basis is by a large amount of reinforcing bar and coagulation local soil type At material utilization amount is big, occupies the space outside bridge, increases construction land tenure, increases construction cost.
Summary of the invention
In view of the deficiencies in the prior art, present invention solves the technical problem that are as follows: how to reduce the tower of restricted clearance The difficulty of construction of foundation structure is hung, to improve the structural strength of tower crane, construction cost is reduced, shortens construction period.
To achieve the above objectives, a kind of tower-crane foundation structure for restricted clearance provided by the invention, including cushion cap and Pier shaft on cushion cap is set, and cushion cap is equipped with multiple cushion cap built-in fittings, and pier shaft is equipped with multiple pier shaft built-in fittings, the tower crane Foundation structure further includes steel pipe column and two girder steels, and steel pipe column one end is connect with cushion cap built-in fitting, the steel pipe column other end and two Girder steel connection, steel pipe column is at a distance from the tie point to pier shaft of girder steel greater than the tie point of steel pipe column and cushion cap built-in fitting to pier shaft Distance;Steel pipe column one end is inclined outwardly by cushion cap built-in fitting and is mounted on cushion cap, and the steel pipe column other end and two girder steels connect It connects, two girder steel one end are connect with pier shaft built-in fitting, two girder steels are substantially disposed on the same horizontal plane, two girder steels On be provided with tower crane base.
Based on the above technical solution, the steel pipe column is two substantially parallel steel pipe columns, steel pipe column with One girder steel connection, another steel pipe column are connect with another girder steel.
Based on the above technical solution, multiple fashioned iron distribution beams are provided between described two girder steels.
Based on the above technical solution, the tower-crane foundation structure further includes being located at same inclined surface with steel pipe column Cross-brace, cross-brace one end are connect with cushion cap built-in fitting, and the cross-brace other end and steel pipe column weld.
Based on the above technical solution, the tower-crane foundation structure further includes connecting rod, connecting rod both ends respectively with Cross-brace and steel pipe column welding.
Based on the above technical solution, the girder steel is made of h section steel, h section steel and steel Tubing string constitutes triangular structure, and both ends are connect with cushion cap built-in fitting and pier shaft built-in fitting respectively.
It based on the above technical solution, will after the tower crane base is mounted on girder steel by the first connecting screw Tower crane base and girder steel weld.
Based on the above technical solution, described two girder steels pass through the second connecting screw and pier shaft built-in fitting connects It connects.
Based on the above technical solution, the steel pipe column outer wall is provided with the ring stiffener connecting with girder steel.
Based on the above technical solution, the steel pipe column and the angle of horizontal direction are 45-80 °;The steel pipe column Distance of the bottom centre apart from pier shaft is 0.8-1.5m;Minimum range of the tower crane base apart from pier shaft is 1.8m.
Compared with the prior art, the advantages of the present invention are as follows:
1) using the steel pipe column for being inclined outwardly setting, steel pipe column bottom is close to pier shaft, by two steel I-beam basic horizontals The top of cushion cap is set, and steel I-beam, steel pipe column, cushion cap and pier shaft constitute a sequentially connected upside-down trapezoid, not only increase The structural strength of tower crane is added, the mounting table of tower crane has also been formed using two horizontal steel I-beams, by the weight of tower crane Amount directly fall on the cushion cap of restricted clearance, and the length of steel I-beam be greater than pier shaft distance from bottom cushion cap edge maximum away from From, and then the space of tower crane is expanded, it realizes that tower crane supporting leg is located on the outside of cushion cap, greatly reduces the tower crane of restricted clearance The difficulty of construction of foundation structure;
2) by adding cross-brace beside steel pipe column, and cross-brace and steel pipe column are located in same inclined surface, diagonal brace Column both ends are connect with steel pipe column and cushion cap built-in fitting respectively, increase the horizontal direction rigidity of tower-crane foundation structure, and cross-brace and Connecting rod is added between steel pipe column, the rigidity of structure of cross-brace and steel pipe column is promoted, to enhance the steady of tower crane construction period It is qualitative, extend the service life of tower-crane foundation structure;
3) steel I-beam is made using h section steel, it is more same than web high using flange width in h section steel The big advantage of common I-steel, both expanded the horizontal support surface on top, be located on the outside of cushion cap convenient for tower crane supporting leg, simultaneously general H section steel and steel pipe column constitute triangular structure, and increase the overall stiffness of tower crane;
4) steel I-beam is connect first with connecting screw with pier shaft built-in fitting, then tower crane base is pacified by connecting screw On steel I-beam, finally tower crane base and steel I-beam welding are reinforced;It is replaced using the articulated manner of connecting screw For the rigid connection of traditional welding, the quality of welding can not be detected in restricted clearance by not only overcoming, and weld seam makes It with being easy fatigue cracking in the process, and installs more convenient, gap and the intensity of junction can be adjusted in time by torque wrench, The switching performance between tower crane base and steel I-beam is enhanced, to keep tower-crane foundation structure safer.
Detailed description of the invention
Fig. 1 is side structure schematic view of the invention.
Fig. 2 is schematic view of the front view of the invention.
In figure: 1- cushion cap, 2- pier shaft, 3- cushion cap built-in fitting, 4- pier shaft built-in fitting, the second connecting screw of 5-, 6- steel pipe column, 7- girder steel, 8- tower crane base, the first connecting screw of 9-, 10- tower crane section, 11- cross-brace, 12- connecting rod, 13- annular add Strengthening tendons.
Specific embodiment
Paper holder is the prior art in the embodiment of the present invention, is made below in conjunction with attached drawing to the embodiment of the present invention further It is described in detail.
Embodiment 1: a kind of tower-crane foundation structure for restricted clearance, it is shown in Figure 1, including cushion cap 1 and setting exist Pier shaft 2 on cushion cap 1, cushion cap 1 are equipped with multiple cushion cap built-in fittings 3, and pier shaft 2 is equipped with multiple pier shaft built-in fittings 4, the tower crane Foundation structure further includes steel pipe column 6 and two girder steels 7, and 6 one end of steel pipe column is connect with cushion cap built-in fitting 3,6 other end of steel pipe column with Two girder steels 7 connect, and the minimum range of tie point to the pier shaft 2 of steel pipe column 6 and girder steel 7 is greater than steel pipe column 6 and cushion cap built-in fitting 3 Tie point to the minimum range of pier shaft 2, steel pipe column 6 is inclined outwardly relative to pier shaft 2 and is mounted on cushion cap 1.
Shown in Figure 1, described two 7 one end of girder steel are connect with pier shaft built-in fitting 4, by two 7 basic setups of girder steel On the same horizontal plane, two horizontal girder steels 7 constitute one for installing the level table of tower crane, on two girder steels 7 It is provided with tower crane base 8, tower crane base 8 is used to tower crane section 10 being mounted on two girder steels 7.
In embodiments of the present invention, by being inclined outwardly the steel pipe column 6 of setting, 6 bottom of steel pipe column is close to pier shaft 2, by two A substantially horizontally disposed top in cushion cap 1 of girder steel 7, girder steel 7, steel pipe column 6, cushion cap 1 and pier shaft 2 constitute an inverted ladder Shape not only increases the structural strength of tower crane, and two horizontal girder steels 7 is also made to form one for installing the level of tower crane Table top directly falls within the weight of tower crane on the cushion cap 1 of restricted clearance, and the length of girder steel 7 is greater than 2 distance from bottom of pier shaft and holds The maximum distance at 1 edge of platform, and then the space of tower crane is expanded, it realizes that tower crane supporting leg is located at 1 outside of cushion cap, greatly drops The difficulty of construction of the tower-crane foundation structure of low restricted clearance.
Embodiment 2: on the basis of embodiment 1, shown in Figure 2, the steel pipe column 6 is two substantially parallel steel pipes Column 6, a steel pipe column 6 are connect with a girder steel 7, and another steel pipe column 6 is connect with another girder steel 7.
In embodiments of the present invention, two steel pipe columns 6 are used to provide a supporting role jointly for horizontally disposed girder steel 7, no The diameter that steel pipe column 6 can only be reduced, is easily installed and accelerates speed of application, and is conducive to be promoted the stabilization of tower-crane foundation structure Property.
Embodiment 3: it is on the basis of embodiment 1, shown in Figure 2, multiple fashioned iron are provided between described two girder steels 7 Distribution beam.Fashioned iron is a kind of area of section distribution more optimization, the more reasonable economic section high efficiency section bar of the ratio of strength to weight, utilizes type Steel distribution beam connects two girder steels 7, and not only constructing, materials are few and lightweight construction for convenient, construction, but also in all directions All have bending resistance strong, promote the integral rigidity of tower crane mounting platform, reduces extraneous interference.
Embodiment 4: on the basis of embodiment 1, shown in Figure 2, the tower-crane foundation structure further includes and steel Tubing string 6 is located at the cross-brace 11 of same inclined surface, and 11 one end of cross-brace is connect with cushion cap built-in fitting 3,11 other end of cross-brace with Steel pipe column 6 welds.
In embodiments of the present invention, by adding cross-brace 11, and cross-brace 11 and steel pipe column 6 beside steel pipe column 6 In same inclined surface, 11 both ends of cross-brace are connect with steel pipe column 6 and cushion cap built-in fitting 3 respectively, increase tower crane knot The horizontal direction rigidity of structure, to enhance the stability of tower crane construction period.
Embodiment 5: shown in Figure 2 on the basis of embodiment 4, the tower-crane foundation structure further includes connecting rod 12, It is welded respectively with cross-brace 11 and steel pipe column 6 at 12 both ends of connecting rod.
In embodiments of the present invention, by adding connecting rod 12 between cross-brace 11 and steel pipe column 6, cross-brace 11 is promoted With the rigidity of structure of steel pipe column 6, extend the service life of tower-crane foundation structure.
Embodiment 6: on the basis of embodiment 1, shown in Figure 2, the girder steel 7 is made of h section steel, H section steel and steel pipe column 6 constitute triangular structure, and both ends are connect with cushion cap built-in fitting 3 and pier shaft built-in fitting 4 respectively.
In embodiments of the present invention, girder steel 7 is made of h section steel, utilizes flange width in h section steel The big advantage of high common I-steel more same than web, and h section steel and steel pipe column 6 are constituted into triangular structure, both expanded The big horizontal support surface on top, is located on the outside of cushion cap 1, and increase the overall stiffness of tower crane convenient for tower crane supporting leg.
Embodiment 7: on the basis of embodiment 1, shown in Figure 2, the tower crane base 8 passes through the first connecting screw 9 After being mounted on girder steel 7, tower crane base 8 and girder steel 7 are welded.
In embodiments of the present invention, the first connecting screw 9 is first passed through, tower crane base 8 is mounted on girder steel 7, is convenient for tower It hangs the installation positioning of pedestal 8 and fixes, then tower crane base 8 and the welding of girder steel 7 are reinforced, enhance tower crane base 8 and steel Switching performance between beam 7, to keep tower-crane foundation structure safer.
Embodiment 8: on the basis of embodiment 1, shown in Figure 1, described two girder steels 7 pass through the second connecting screw 5 connect with pier shaft built-in fitting 4.In embodiments of the present invention, girder steel 7 and pier shaft built-in fitting 4 are connected using the second connecting screw 5 It connects, using the rigid connection of the articulated manner substitution traditional welding of connecting screw, enhances the connection between girder steel 7 and pier shaft 2 Performance can adjust in time the gap between tower-crane foundation structure and pier shaft 2 not only in tower crane use process by torque wrench And intensity, and installed and be more convenient by connecting screw, the quality of welding can not be detected in restricted clearance by overcoming, Weld seam is easy fatigue in use, so that the intensity and safe operation of foundation structure are hung in guarantee.
Embodiment 9: on the basis of embodiment 1, shown in Figure 1,6 outer wall of steel pipe column is provided with to be connected with girder steel 7 The ring stiffener 13 connect.
In embodiments of the present invention, it is parallel with 6 axis of steel pipe column to be provided with several layers for the outer wall surface at 6 top of steel pipe column Ring stiffener 13, ring stiffener 13 be remarkably improved tower-crane foundation structure intensity, increase rigidity effect, reduce tower Hang in use, the cracking of weld seam between girder steel 7 and steel pipe column 6, deformation probability, improve the safety of tower crane operation, Extend the service life of tower-crane foundation structure.
Embodiment 10: on the basis of embodiment 1, referring to shown in Fig. 1 and 2, the angle of the steel pipe column 6 and horizontal direction It is 45-60 °;Distance of 6 bottom centre of steel pipe column apart from pier shaft 2 is 0.6-1.2m;The tower crane base 8 is apart from pier shaft 2 Minimum range be 2.3m.
In embodiments of the present invention, the steel pipe column 6 and the angle of horizontal direction are 45-80 °, it is preferable that the angle is 77°;Distance of 6 bottom centre of steel pipe column apart from pier shaft 2 is 0.8-1.5m, it is preferable that the distance is 1.045 meters;Tower crane base 8 Minimum range apart from pier shaft 2 is 1.8m;Tower crane supporting leg is located at outside cushion cap 1 by the space that can expand tower crane as far as possible Side, and can guarantee the intensity and safe operation for hanging foundation structure.
The present invention is not only limited to above-mentioned preferred forms, anyone can show that other are each under the inspiration of the present invention The product of kind form, however, make any variation in its shape or structure, it is all with identical or similar with the present invention Technical solution, within its protection scope.The content being not described in detail in this specification belongs to this field professional technique people The prior art well known to member.

Claims (10)

1. a kind of tower-crane foundation structure for restricted clearance is held including cushion cap (1) and the pier shaft (2) being arranged on cushion cap (1) Platform (1) is equipped with multiple cushion cap built-in fittings (3), and pier shaft (2) is equipped with multiple pier shaft built-in fittings (4), it is characterised in that: the tower Hanging foundation structure further includes steel pipe column (6) and two girder steels (7), and steel pipe column (6) one end is connect with cushion cap built-in fitting (3), steel pipe Column (6) other end is connect with two girder steels (7), and steel pipe column (6) is greater than steel at a distance from the tie point to pier shaft (2) of girder steel (7) Tubing string (6) is at a distance from the tie point to pier shaft (2) of cushion cap built-in fitting (3);Steel pipe column (6) one end passes through cushion cap built-in fitting (3) Be inclined outwardly and be mounted on cushion cap (1), steel pipe column (6) other end is connect with two girder steels (7), two girder steel (7) one end with Pier shaft built-in fitting (4) connection, two girder steels (7) are substantially disposed on the same horizontal plane, are provided on two girder steels (7) Tower crane base (8).
2. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: the steel pipe column (6) is Two substantially parallel steel pipe columns (6), a steel pipe column (6) connect with a girder steel (7), another steel pipe column (6) with it is another A girder steel (7) connection.
3. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: described two girder steels (7) Between be provided with multiple fashioned iron distribution beams.
4. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: the tower-crane foundation structure It further include the cross-brace (11) for being located at same inclined surface with steel pipe column (6), cross-brace (11) one end and cushion cap built-in fitting (3) are even It connects, cross-brace (11) other end and steel pipe column (6) are welded.
5. being used for the tower-crane foundation structure of restricted clearance as claimed in claim 4, it is characterised in that: the tower-crane foundation structure It further include connecting rod (12), connecting rod (12) both ends are welded with cross-brace (11) and steel pipe column (6) respectively.
6. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: the girder steel (7) uses H section steel is made, and h section steel and steel pipe column (6) constitute triangular structure, both ends respectively with cushion cap built-in fitting (3) it is connected with pier shaft built-in fitting (4).
7. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: the tower crane base (8) After being mounted on girder steel (7) by the first connecting screw (9), tower crane base (8) and girder steel (7) are welded.
8. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: described two girder steels (7) It is connect by the second connecting screw (5) with pier shaft built-in fitting (4).
9. being used for the tower-crane foundation structure of restricted clearance as described in claim 1, it is characterised in that: the steel pipe column (6) is outside Wall is provided with the ring stiffener (13) connecting with girder steel (7).
10. as described in claim 1 be used for restricted clearance tower-crane foundation structure, it is characterised in that: the steel pipe column (6) with The angle of horizontal direction is 45-80 °;Distance of steel pipe column (6) bottom centre apart from pier shaft (2) is 0.8-1.5m;It is described Minimum range of the tower crane base (8) apart from pier shaft (2) is 1.8m.
CN201910087963.2A 2019-01-29 2019-01-29 Tower-crane foundation structure for restricted clearance Pending CN109653236A (en)

Priority Applications (1)

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CN201910087963.2A CN109653236A (en) 2019-01-29 2019-01-29 Tower-crane foundation structure for restricted clearance

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Application Number Priority Date Filing Date Title
CN201910087963.2A CN109653236A (en) 2019-01-29 2019-01-29 Tower-crane foundation structure for restricted clearance

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112030746A (en) * 2020-04-22 2020-12-04 中铁广州工程局集团桥梁工程有限公司 Method for dismantling water retaining steel cofferdam in advance in bridge construction

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535343A (en) * 2012-02-02 2012-07-04 中铁大桥局股份有限公司 Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge
CN106429883A (en) * 2016-10-27 2017-02-22 上海庞源机械租赁有限公司 Tower crane foundation used for bridge construction
JP6289046B2 (en) * 2013-11-18 2018-03-07 大成建設株式会社 Temporary stand
CN207228146U (en) * 2017-08-29 2018-04-13 中交第二航务工程局有限公司 Bridge tower cushion cap overhanging type tower crane
CN207878498U (en) * 2018-02-08 2018-09-18 中铁二十二局集团第三工程有限公司 A kind of tower-crane foundation structure of bridge deepwater foundation pit

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102535343A (en) * 2012-02-02 2012-07-04 中铁大桥局股份有限公司 Method for erecting girder on top of main tower mound of steel truss girder cable-stayed bridge
JP6289046B2 (en) * 2013-11-18 2018-03-07 大成建設株式会社 Temporary stand
CN106429883A (en) * 2016-10-27 2017-02-22 上海庞源机械租赁有限公司 Tower crane foundation used for bridge construction
CN207228146U (en) * 2017-08-29 2018-04-13 中交第二航务工程局有限公司 Bridge tower cushion cap overhanging type tower crane
CN207878498U (en) * 2018-02-08 2018-09-18 中铁二十二局集团第三工程有限公司 A kind of tower-crane foundation structure of bridge deepwater foundation pit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112030746A (en) * 2020-04-22 2020-12-04 中铁广州工程局集团桥梁工程有限公司 Method for dismantling water retaining steel cofferdam in advance in bridge construction
CN112030746B (en) * 2020-04-22 2021-10-15 中铁广州工程局集团桥梁工程有限公司 Method for dismantling water retaining steel cofferdam in advance in bridge construction

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Application publication date: 20190419

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