CN212613847U - Steel-pipe column straightness variable adjusting device that hangs down of reverse construction method construction - Google Patents

Abstract

The utility model relates to a variable adjusting device of steel-pipe column straightness that hangs down of reverse construction method construction solves current foundation ditch reverse construction method construction, and the straightness adjustment process that hangs down of steel-pipe column is loaded down with trivial details time-consuming, and divides two direction adjustment to influence the problem of adjustment precision mutually. The device is characterized in that a steel pipe column is arranged in a pile hole, an adjusting bracket is arranged on the periphery of the top of the pile hole, and a lower layer adjusting device of the adjusting bracket comprises four lower layer jacks arranged at radial fixed points; the coaxial guide post that is provided with in steel-pipe column upper end, upper adjusting device include four radial upper jack, upper jack below is equipped with the circular orbit, and four upper jack equidistance settings and synchronous rotation on the circular orbit encircle the outer lane of four upper jack and are provided with the ring seat that supports and lean on upper jack outer end. The utility model discloses adjust the upper jack that hangs down straightness and use and set up the circular orbit, can simplify accommodation process according to the direction of the accurate selection regulation of the result of straightness that hangs down detection, improve the regulation precision.

Description

Steel-pipe column straightness variable adjusting device that hangs down of reverse construction method construction

Technical Field

The utility model belongs to the technical field of building underground structure construction, a reverse construction method construction technology is related to, in particular to steel-pipe column straightness variable adjusting device that hangs down of reverse construction method construction.

Background

With the rapid development of city construction in China, buildings are continuously developed in the air, and meanwhile, underground spaces and facilities with various purposes are also developed unprecedentedly, wherein the underground spaces and facilities comprise various types such as basements of high-rise buildings, underground commercial streets and the like. To construct these underground facilities, excavation of deep foundation pits is necessary. The traditional foundation pit adopts a sequential construction method, the deep foundation pit is excavated all day long according to the depth requirement of the foundation pit, then the underground structure is built layer by layer from bottom to top, the sequential construction method has large construction engineering quantity, large earth volume is excavated in a one-time centralized way, the construction period of the underground structure is long, and the foundation pit with large depth excavated at one time has influence on surrounding plots, so that a large safety distance needs to be reserved at the periphery of the engineering construction, high support cost is spent to ensure construction safety, the construction cost of the underground deep foundation engineering is counted to be 20% -30% of the total price of the whole high-rise building, wherein the support cost of the foundation pit accounts for about 10% of the total price of the engineering, and some enclosure structures only serve as temporary structures in the whole basement construction process and also occupy part of the engineering cost.

At present, there is also a foundation pit reverse construction method, for example, a chinese patent published in 2018, 3, 16, and entitled "steel lattice column for foundation pit internal support reverse construction" and a construction method, where a side wall of the steel lattice column is a plane, so when adjusting perpendicularity by using upper and lower double-layered jacks, the upper and lower double-layered jacks must be perpendicular to a side surface of the steel lattice column to ensure safe jacking, and thus the upper and lower double-layered jacks are set at fixed points, and in an actual construction process, a deviation direction of the perpendicularity of the steel lattice column is not perpendicular to the side wall of the steel lattice column, i.e., an included angle exists between the direction of the jacks, complicated calculation is required during adjustment, the two directions are respectively adjusted, and mutual influence is caused in a bidirectional adjustment process, multiple measurement-adjustment cycles are required, which is very tedious and time-consuming, and adjustment accuracy is difficult to ensure.

Disclosure of Invention

The utility model discloses solve in the construction of current foundation ditch reverse construction method, there is the contained angle in the straightness deviation direction of hanging down of steel-pipe column and the jack direction of fixed point setting, it adjusts respectively to need two directions, the adjustment process is loaded down with trivial details and takes time, and two-way influence the problem of adjustment precision mutually, the variable adjusting device of steel-pipe column straightness that hangs down of a reverse construction method construction is provided, can be according to the straightness deviation direction that hangs down of measurement, change the jacking direction of jack, make the jack along the direct jacking adjustment of the straightness deviation direction that hangs down, reduce the work of calculating and measuring repeatedly and correcting, the efficiency of construction and the precision of construction are.

The purpose of the utility model is mainly realized by the following scheme: the utility model provides a variable adjusting device of steel-pipe column straightness that hangs down of reverse construction method construction, includes the stake hole of seting up subaerial, sets up the steel-pipe column in the stake hole, and stake hole top ring week is provided with the regulation support, and the steel-pipe column upper end is erect on adjusting the support, at its characterized in that: the adjusting device is characterized in that a lower layer adjusting device and an upper layer adjusting device are arranged on the adjusting support, the lower layer adjusting device comprises four lower layer jacks for jacking the steel pipe column in a radial mode, the four lower layer jacks are uniformly arranged around the steel pipe column, the lower layer jacks are arranged at fixed points on the adjusting support in a fixed mode, the guide column is arranged on the upper end of the steel pipe column in a coaxial welding extending mode, the upper layer adjusting device comprises four upper layer jacks capable of being pushed out in the radial mode inwards and abutted against the guide column, an annular track is arranged below the upper layer jacks, the four upper layer jacks are arranged on the annular track at equal intervals and rotate synchronously, and a ring seat abutted against the outer end of the upper layer jack is arranged on an outer. During adjustment, the lower-layer adjusting device is used for clamping and positioning the steel pipe column, and then the upper-layer adjusting device is used for adjusting and calibrating, so that the clamping position of the lower-layer adjusting device of the steel pipe column is adjusted as a rotating fulcrum. During adjustment, according to the result of verticality detection, the verticality deviation direction and the deviation amount of the steel pipe column are obtained, the four lower-layer jacks are firstly pushed out inwards to be positioned, the four upper-layer jacks can synchronously rotate on the circular track and rotate to the direction corresponding to the verticality deviation, the two upper-layer jacks perpendicular to the deviation direction are pushed out inwards, then adjustment and calibration are carried out through the two upper-layer jacks along the deviation direction, and after the calibration is completed, the upper adjusting screw and the lower adjusting screw are pushed out inwards to be positioned. The ring seat is used as a rear end leaning seat of the upper jack.

Preferably, a sliding seat capable of sliding along the annular rail is arranged between the upper-layer jack and the annular rail, and the upper-layer jack can slide along the radial direction of the sliding seat. The annular rail is prevented from being deformed and damaged by the reaction force of the upper jack.

Preferably, the lower layer adjusting device also comprises four lower adjusting screw rods radially jacking the steel pipe columns, and the lower adjusting screw rods and the lower layer jacks are alternately and uniformly arranged in the circumferential direction; the lower layer adjusting device also comprises four upper adjusting screw rods which are ejected out inwards and radially, and the upper adjusting screw rods and the lower adjusting screw rods are aligned up and down and are arranged at fixed points. After the calibration is finished, the upper adjusting screw and the lower adjusting screw are ejected inwards for positioning.

Preferably, the annular track is formed by welding and assembling two semicircular tracks, and the ring seat is formed by welding and assembling two semicircular rings.

Preferably, a plurality of stay cables are uniformly arranged between the periphery of the top end of the guide post and the adjusting bracket, and an adjusting rod is arranged in the middle of each stay cable.

Preferably, the lateral wall of the upper end of the steel pipe column is provided with a grouting hole, and the grouting hole is higher than the ground elevation and lower than the lower-layer adjusting device.

Preferably, the top end of the steel pipe column extends towards two sides to form a supporting plate, and the supporting plate is erected on the adjusting support.

Preferably, a support platform is poured on the ground around the top of the pile hole, and the adjusting support is fixed on the support platform.

The utility model discloses adjust the upper jack that hangs down straightness and use and set up the circular orbit, can simplify accommodation process according to the direction of the accurate selection regulation of the result of straightness that hangs down detection, improve the regulation precision.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a lower layer adjusting device at a section a-a of the structure of fig. 1 according to the present invention.

Fig. 3 is a schematic structural view of an upper-layer adjusting device at a section B-B of the structure of fig. 1.

Fig. 4 is a schematic view of the installation structure of the upper jack of the present invention.

Illustration of the drawings: 1. adjusting support, 2, steel pipe column, 3, guide column, 4, welding seam, 5, bracket, 6, upper jack, 7, lower jack, 8, adjusting rod, 9, inclinometer pipe, 10, grouting hole, 11, pile hole, 12, support platform, 13, lower adjusting screw, 14, upper adjusting screw, 15, ring seat, 16, circular rail, 17 and sliding seat.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b): a variable verticality adjusting device for a steel pipe column constructed by a reverse construction method is shown in figures 1, 2 and 3. This device is including the stake hole 11 of seting up subaerial, stake hole bottom below steel reinforcement cage, and support platform 12 is pour around stake hole top, and the last welding equipment of support platform erects 1.8 meters high regulation support 1. Set up steel-pipe column 2 in the stake hole 11, the bracket 5 that stretches out through both sides in the steel-pipe column upper end erects on adjusting support 1, the upper end coaxial welding guide post of steel-pipe column, the guide post height is 2 meters, guide post upper end ring week evenly sets up 4 suspension cables with the upper surface of adjusting support 1, suspension cable middle section is established ties there is regulation pole 8, adjust the pole both ends and respectively establish a bolt hole, set up adjusting bolt in the bolt hole, two adjusting bolt connect guide post upper end and adjusting support upper surface through the cable wire respectively, through twisting the regulation pole, the elasticity of two bolts can the synchronous adjustment, reach the purpose of adjusting the suspension cable rate of tension. The lateral wall of the upper end of the steel pipe column 2 is provided with a grouting hole, and the grouting hole is higher than the ground elevation and lower than the bracket 5. The lateral wall of steel-pipe column 2 is equipped with the deviational survey pipe 9 parallel with the vertical axis of steel-pipe column for detect the straightness deviation of hanging down of steel-pipe column.

And a lower layer adjusting device and an upper layer adjusting device are arranged on the adjusting bracket 1, and a welding seam 4 of the guide column 2 and the steel pipe column 3 is arranged between the upper layer adjusting device and the lower layer adjusting device. The lower layer adjusting device comprises lower layer jacks 5 and lower adjusting screws 13, wherein the four lower layer jacks and the four lower adjusting screws are used for jacking the steel pipe column 2, the four lower layer jacks and the four lower adjusting screws are alternately and uniformly arranged around the steel pipe column 2, the lower layer jacks 5 and the lower adjusting screws 13 are arranged at fixed points on the adjusting support 1, namely the lower layer jacks 5 are arranged in the east, south, west and north directions, and the lower adjusting screws 13 are respectively arranged in the southeast, southwest, northeast and northwest directions.

As shown in fig. 3 and 4, the upper layer adjusting device includes four upper layer jacks 6 which are radially ejected inwards and four upper adjusting screws 14 which are radially ejected inwards, the upper adjusting screws and the lower adjusting screws are aligned up and down at fixed points, an annular track 16 is arranged below the upper layer jacks 6, the four upper layer jacks 6 are arranged on the annular track at equal intervals and synchronously rotate, and a ring seat 15 which abuts against the outer ends of the upper layer jacks 6 is arranged around the outer rings of the four upper layer jacks. The annular track 16 is formed by welding and assembling two semicircular tracks, and the ring seat 15 is formed by welding and assembling two semicircular rings. And sliding seats 17 along the radial direction of the steel pipe column are arranged between the upper-layer jack and the annular track, and adjacent sliding seats are positioned through arc-shaped or linear connecting rods to keep synchronous rotation. The upper jack can slide along the sliding seat in the radial direction, so that the annular rail is prevented from deforming under stress during jacking.

Claims (8)

1. The utility model provides a variable adjusting device of steel-pipe column straightness that hangs down of reverse construction method construction, includes the stake hole of seting up subaerial, sets up the steel-pipe column in the stake hole, and stake hole top ring week is provided with the regulation support, and the steel-pipe column upper end is erect on adjusting the support, at its characterized in that: the adjusting device is characterized in that a lower layer adjusting device and an upper layer adjusting device are arranged on the adjusting support, the lower layer adjusting device comprises four lower layer jacks for jacking the steel pipe column in a radial mode, the four lower layer jacks are uniformly arranged around the steel pipe column, the lower layer jacks are arranged at fixed points on the adjusting support in a fixed mode, the guide column is arranged on the upper end of the steel pipe column in a coaxial welding extending mode, the upper layer adjusting device comprises four upper layer jacks capable of being pushed out in the radial mode inwards and abutted against the guide column, an annular track is arranged below the upper layer jacks, the four upper layer jacks are arranged on the annular track at equal intervals and rotate synchronously, and a ring seat abutted against the outer end of the upper layer jack is arranged on an outer.

2. The device for variably adjusting the verticality of a steel pipe column constructed by the reverse construction method according to claim 1, wherein: and a sliding seat capable of sliding along the annular rail is arranged between the upper-layer jack and the annular rail, and the upper-layer jack can slide along the radial direction of the sliding seat.

3. The device for variably adjusting the verticality of a steel pipe column constructed by the reverse construction method according to claim 1, wherein: the lower layer adjusting device also comprises four lower adjusting screw rods radially jacking the steel pipe columns, and the lower adjusting screw rods and the lower layer jacks are alternately and uniformly arranged in the circumferential direction; the lower layer adjusting device also comprises four upper adjusting screw rods which are ejected out inwards and radially, and the upper adjusting screw rods and the lower adjusting screw rods are aligned up and down and are arranged at fixed points.

4. The device for variably adjusting the verticality of a steel pipe column constructed by a reverse construction method according to claim 1, 2 or 3, wherein: the annular track is assembled by two semicircular track welding and is formed, and the ring seat is assembled by two semicircular ring welding and is formed.

5. The device for variably adjusting the verticality of a steel pipe column constructed by a reverse construction method according to claim 1, 2 or 3, wherein: a plurality of stay cables are uniformly arranged between the periphery of the top end of the guide post and the adjusting bracket, and an adjusting rod is arranged in the middle of each stay cable.

6. The device for variably adjusting the verticality of a steel pipe column constructed by a reverse construction method according to claim 1, 2 or 3, wherein: the lateral wall of upper end of the steel pipe column is provided with a grouting hole, and the grouting hole is higher than the ground elevation and lower layer adjusting device.

7. The device for variably adjusting the verticality of a steel pipe column constructed by a reverse construction method according to claim 1, 2 or 3, wherein: the top end of the steel pipe column extends towards two sides to form a supporting plate, and the supporting plate is erected on the adjusting support.

8. The device for variably adjusting the verticality of a steel pipe column constructed by a reverse construction method according to claim 1, 2 or 3, wherein: and (4) pouring a support platform on the periphery of the ground at the top of the pile hole, and fixing the adjusting support on the support platform.

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