CN111593899A - Steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure - Google Patents
Steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure Download PDFInfo
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- CN111593899A CN111593899A CN202010490702.8A CN202010490702A CN111593899A CN 111593899 A CN111593899 A CN 111593899A CN 202010490702 A CN202010490702 A CN 202010490702A CN 111593899 A CN111593899 A CN 111593899A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/18—Adjusting tools; Templates
- E04G21/1841—Means for positioning building parts or elements
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
- E02D29/05—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench
- E02D29/055—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them at least part of the cross-section being constructed in an open excavation or from the ground surface, e.g. assembled in a trench further excavation of the cross-section proceeding underneath an already installed part of the structure, e.g. the roof of a tunnel
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0026—Metals
- E02D2300/0029—Steel; Iron
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2600/00—Miscellaneous
- E02D2600/10—Miscellaneous comprising sensor means
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a perpendicularity measuring and adjusting structure of a steel pipe column constructed by a foundation pit reverse construction method, and solves the problem that the perpendicularity measuring precision of the steel pipe column is limited in the existing foundation pit reverse construction method. This structure includes the pile hole of seting up subaerial, sets up the steel-pipe column in the pile hole, and pile hole top ring week is provided with the regulation support, the cloud platform frame that automatic leveling was passed through to the lateral wall upper end of steel-pipe column has erect photosensor, photosensor includes plane sensitization board down, and the center of plane sensitization board is equipped with vertical decurrent laser instrument, the fixed speculum that sets up in photosensor below of steel-pipe column lateral wall, the speculum is convex mirror up, the line in the swing central point of laser instrument on cloud platform and speculum mirror surface centre of a circle is located the axial plane of steel-pipe column. The invention can accurately measure the deflection direction and deflection quantity by adopting optical measurement, and carries out secondary deflection on the reflected signal, amplifies the reflected signal and further improves the verticality measurement precision.
Description
Technical Field
The invention belongs to the technical field of construction of underground structures of buildings, relates to a reverse construction method construction technology, and particularly relates to a steel pipe column verticality measuring and adjusting structure for foundation pit reverse 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 support" with publication number CN107806112A, the reverse construction method manually punches a pile hole at a fixed point of a design point of a steel pipe column of a foundation pit, puts down a steel reinforcement cage, pours a support platform and installs an adjusting support around the top of the pile hole, puts down the steel pipe column to a designed elevation with a crane, the adjusting support supports support plates at two sides of the top of the steel pipe column, adjusts the perpendicularity of the steel pipe column through an adjusting device on the adjusting support, and performs cement grouting after the adjustment is completed, and pours and fixes the bottom end of the steel pipe column and the steel reinforcement cage. In the process of reverse construction, the perpendicularity adjustment of the steel pipe column is a key process, the adjustment has extremely important influence on the whole structure of a building, and the perpendicularity of the steel pipe column in the engineering construction basically meets the requirement that the perpendicularity is smaller than 1/500 or even one in thousandth. The existing verticality measuring device is generally realized by a total station, but as the main structure of the steel pipe column is below the ground elevation, the verticality is generally measured and adjusted by welding a guide post of 2-3 meters at the upper end of the steel pipe column, the total station measures the verticality of the guide pipe to estimate the verticality of the steel pipe column, and the measurement precision hardly meets the high-precision verticality measurement requirement. At present, an inclinometer parallel to the axis of a steel pipe column is arranged on the side wall of the steel pipe column, and then the verticality is measured along the motion of the inclinometer through an inclinometer, so that the inclinometer can go deep under the ground elevation, but because the length of the inclinometer is large, local bending can occur when the pipe is installed, the inclinometer walking along the inclinometer can be influenced, and the measurement precision is limited.
Disclosure of Invention
The invention mainly solves the problem that the verticality measurement precision of a steel pipe column is limited in the existing foundation pit reverse construction method, and provides a steel pipe column verticality measurement and adjustment structure for foundation pit reverse construction method, which can measure the verticality of the steel pipe column with high precision and adjust the verticality in multiple directions through a jack.
The purpose of the invention is mainly realized by the following scheme: the utility model provides a steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure, 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 adjusts the support, and the steel-pipe column upper end is erect on adjusting the support, is provided with the jack of adjusting the steel-pipe column straightness that hangs down on adjusting the support, at its characterized in that: the steel pipe column comprises a steel pipe column, and is characterized in that a photosensitive sensor is erected at the upper end of the side wall of the steel pipe column through an automatic leveling cradle head, the photosensitive sensor comprises a downward plane photosensitive plate, a vertical downward laser is arranged at the center of the plane photosensitive plate, a reflector is fixedly arranged on the side wall of the steel pipe column below the photosensitive sensor and is an upward convex mirror, and the connecting line of the swing center point of the laser on the cradle head and the center of the mirror surface of the reflector is located on the axial plane of the steel pipe column. Traditional straightness that hangs down measures, with the mechanical type inclinometer of advancing along the inclinometer, the precision is surveyed the influence that the inclined tube self is crooked, and the steel-pipe column exposes highly inadequately above ground, measures straightness accuracy that hangs down with the total powerstation also inadequately. This device adopts the laser measurement method, light can keep good perpendicular penetrating in even air medium, photosensor passes through the cloud platform and keeps perpendicular emission light signal downwards all the time, and the speculum is along with the slope of steel-pipe column, through the reflection of speculum with laser reflection to the sensitization board on, through the interval between the reflection signal that the sensitization board accepted and the emission signal, can the accurate measurement deflection direction and deflection volume, the sensitization board can show on external display screen through the signal derivation, guide the straightness regulation that hangs down. This scheme still further sets the cambered surface to the speculum, photosensitive sensor and speculum are accurate to align from top to bottom, then reflected signal is good with the transmitted signal coincidence, misplace from top to bottom when photosensitive sensor and speculum, the cambered surface speculum further deflects the angle of reverberation, the reflected signal that makes the sensitization board receive can further increase, improve the sensitivity of sensor, for example as follows, interval 10 meters about photosensitive sensor and speculum, if there is the straightness deviation of hanging down in the steel-pipe column, inclination is alpha, use plane mirror reflected signal light and perpendicular line contained angle to be 2 alpha, if use the radius to be 10 meters the cambered surface mirror, reflected signal light and perpendicular line contained angle are 4 alpha, sensor sensitivity multiplies. The area of a photosensitive sensor receiving plate is limited, and the measurable range is small, so that a total station can be used for roughly measuring the verticality and carrying out primary adjustment, and when the verticality deviation is reduced to be small enough, the photosensitive sensor of the device is used for fine adjustment. High precision parts such as this device photosensitive sensor set up in the steel-pipe column upper end, and after adjusting, the steel-pipe column can be dismantled the reutilization after the grout is fixed, and the speculum is located under the ground elevation, can choose not to retrieve.
Preferably, the outer side wall of the steel pipe column is provided with an inclinometer tube parallel to the axis of the steel pipe column, the photosensitive sensor is arranged at the upper end of the inclinometer tube, and the reflector is arranged at the lower end of the inclinometer tube. The inclinometer tube protects the photosensitive sensor and the reflectivity, so long as the light path is kept smooth, and the requirement on installation coaxiality is reduced.
Preferably, the side surfaces of the upper end and the lower end of the inclinometer close to the steel pipe column are provided with avoidance grooves, and the inclinometer is fixed with the steel pipe column through a plurality of hoops.
Preferably, the two sets of the photosensitive sensors and the reflectors are arranged on the side wall of the steel pipe column at intervals of 90 degrees in the circumferential direction, the reflector surface is a cylindrical surface, the axis of the cylindrical surface is arranged along the radial direction of the steel pipe column, and the ejection port of the laser is in a point shape, a linear shape or a cross shape. The speculum of face of cylinder can only detect the deviation of a direction, consequently will set up two sets of photosensitive sensor and speculums at an interval of 90 degrees for two vertical direction's straightness that hangs down detects, adopts the signal of linear or cross form to discern more easily.
As another preferable scheme, the photosensor and the reflector are arranged in one group on the side wall of the steel pipe column, the mirror surface of the reflector is a spherical surface, and the ejection hole of the laser is in a point shape or a cross shape. When the spherical reflector is used, the spherical reflector is aligned with the photosensitive sensor up and down to be calibrated with great difficulty, but the detection of all-directional verticality can be carried out through a group of photosensitive sensors and the reflector, so that the detection signal is more visual when guiding and adjusting, and the direction with deviation in verticality can be directly selected to be directly corrected and adjusted.
Preferably, the photosensitive sensor and the reflector are arranged at a distance L, and the cambered surface radius of the reflector is R, R = L, and further L =10 m.
Preferably, the holder comprises an outer ring frame, a middle ring frame and an inner ring frame, the outer ring frame is fixed with the side wall of the steel pipe column through a connecting rod, a transverse hinged shaft is arranged between the outer ring frame and the middle ring frame, a longitudinal hinged shaft is arranged between the middle ring frame and the inner ring frame, and the inner ring frame is provided with a photosensitive sensor.
Preferably, the adjusting bracket is provided with a lower layer adjusting device and an upper layer adjusting device, the lower layer adjusting device comprises four lower layer jacks for radially jacking the steel pipe column and four lower adjusting screws for radially jacking the steel pipe column, the four lower layer jacks and the four lower adjusting screws are alternately and uniformly arranged around the steel pipe column, the lower layer jacks and the lower adjusting screws are arranged on the adjusting bracket at fixed points, the upper end of the steel pipe column is coaxially welded and extended with a guide column, the upper layer adjusting device comprises four upper layer jacks capable of being radially ejected inwards to the guide column and four upper adjusting screws capable of being radially ejected inwards to the guide column, the upper adjusting screws and the lower adjusting screws are vertically aligned and arranged at fixed points, the upper jack below is equipped with the endless track, and four upper jack equidistance settings and synchronous rotation on the endless track encircle four upper jack's outer lane and be provided with the circle seat that leans on the upper jack outer end. The upper layer adjusting device acts on the guide column, and the lower layer adjusting device acts on the steel pipe column. And the welding seam of the guide column and the steel pipe column is arranged between the upper layer adjusting device and the lower layer adjusting device. 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 deviation 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 abutting seat of the upper-layer jack, a sliding seat capable of sliding along the sliding rail is arranged between the upper-layer jack and the sliding rail, and the upper-layer jack can radially slide along the sliding seat, so that the reaction force of the upper-layer jack cannot act on the sliding rail.
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 invention adopts the photosensitive sensor, can accurately measure the deflection direction and deflection quantity, and the photosensitive plate can display on an external display screen through signal derivation to guide the verticality adjustment; the reflector is arranged into a cambered surface, so that secondary deflection can be performed on the reflected signal, the reflected signal is amplified, and the sensitivity of the photosensitive sensor is further improved; the upper jack for adjusting the verticality is provided with the annular rail, so that the adjusting direction can be accurately selected according to the result of verticality detection, the adjusting process is simplified, and the adjusting precision is improved.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic diagram of a structure of the present invention.
FIG. 2 is a schematic view of the structure of the lower layer regulating device at the section A-A of the structure of FIG. 1.
FIG. 3 is a schematic structural view of an upper layer regulating device at a section B-B of the structure of FIG. 1 according to the present invention.
Fig. 4 is a schematic view of the installation structure of the upper jack of the present invention.
Fig. 5 is a schematic view of a photosensor and mirror arrangement according to the present invention.
Fig. 6 is a schematic view of a cradle head structure according to the present invention.
Fig. 7 is a schematic diagram of a signal amplification structure of a reflector according to 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, annular track, 17, sliding seat, 18, tripod head, 19, light sensitive plate, 20, laser, 21, reflector, 22 avoidance groove, 23, outer ring frame, 24, middle ring frame, 25, inner ring frame, 26, transverse hinge shaft, 27, longitudinal hinge shaft, 28 and connecting rod.
Detailed Description
The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.
Example (b): a steel pipe column verticality measuring and adjusting structure constructed by a foundation pit 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.
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. A sliding seat 17 capable of sliding along the sliding rail is arranged between the upper-layer jack and the sliding rail, the upper-layer jack can slide along the radial direction of the sliding seat, and the adjacent sliding seats are positioned through arc-shaped or linear connecting rods to keep synchronous rotation. The upper jack can slide along the radial direction of the sliding seat, so that the deformation of the sliding rail under stress during jacking is avoided.
As shown in fig. 1 and 5, the outer side wall of the steel pipe column 2 is provided with an inclinometer tube 9 parallel to the vertical axis of the steel pipe column, the upper end of the side wall of the steel pipe column at the upper end of the inclinometer tube 9 is provided with a photosensor through a self-leveling pan-tilt head 18, the photosensor comprises a plane photosensitive plate 19 which faces downwards and keeps horizontal, the center of the plane photosensitive plate is provided with a vertical downward laser 20, the side wall of the steel pipe column at the lower end of the inclinometer tube 9 is fixedly provided with a reflector 21, the side surface of the upper end and the lower end of the inclinometer tube 9 close to the steel pipe column is provided with an avoiding groove 22, and the inclinometer tube.
As shown in fig. 6, the pan/tilt head 18 comprises an outer ring frame 23, a middle ring frame 24 and an inner ring frame 25, the outer ring frame is fixed with the side wall of the steel pipe column 1 through a connecting rod 28, a transverse hinge shaft 26 is arranged between the outer ring frame 23 and the middle ring frame 24, a longitudinal hinge shaft 27 is arranged between the middle ring frame 24 and the inner ring frame 25, and the inner ring frame 25 is provided with a photosensitive sensor.
The reflector is an upward convex mirror, and a connecting line of a swing center point of the laser on the holder 18 and the center of the mirror surface of the reflector 21 is positioned on the axial plane of the steel pipe column 2. There are two arrangements, one: the inclinometer 9 is arranged at 90-degree intervals in the circumferential direction of the side wall of the steel pipe column 2, namely, two groups of the photosensitive sensors and the reflectors are arranged on the side wall of the steel pipe column, two groups of the photosensitive sensors and the reflectors are arranged at 90-degree intervals in the circumferential direction of the side wall of the steel pipe column, the cambered surface of the mirror surface of the reflector 21 is a cylindrical surface, the axis of the cylindrical surface is arranged along the radial direction of the steel pipe column, the ejection port of the laser is linear, linear projection is formed on the reflector, projected light rays are along the normal line of the cylindrical surface of the reflector, in this way, each inclinometer is responsible for verticality measurement in one direction, namely, the measurement in the north-south direction and the measurement in the east-west direction are carried. II, secondly: the inclination measuring pipe is provided with one photosensitive sensor and one reflector, namely the photosensitive sensor and the reflector are arranged on the side wall of the steel pipe column in a group, the mirror surface of the reflector 21 is a spherical surface, the ejection hole of the laser is in a cross shape, the photosensitive sensor and the reflector are calibrated in two directions in the arrangement mode, and the position deviation position of the cross point of the cross projection line indicates the verticality deviation direction and the deviation amount.
As shown in fig. 5 and 7, the photosensitive sensor and the reflector 21 are arranged at a distance L, and the arc radius of the reflector 21 is R, R = L =10 m. The steel pipe column 2 has verticality deviation, the inclination angle is alpha, the cambered mirror 21 with the radius of 10 meters is used, the included angle between the reflected signal light and the vertical line is 4 alpha, and the sensitivity of the photosensitive sensor can be improved. The area of a photosensitive sensor receiving plate is limited, and the measurable range is small, so that a total station can be used for roughly measuring the verticality and carrying out primary adjustment, and when the verticality deviation is reduced to be small enough, the photosensitive sensor of the device is used for fine adjustment.
Claims (10)
1. The utility model provides a steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure, 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 adjusts the support, and the steel-pipe column upper end is erect on adjusting the support, is provided with the jack of adjusting the steel-pipe column straightness that hangs down on adjusting the support, at its characterized in that: the steel pipe column comprises a steel pipe column, and is characterized in that a photosensitive sensor is erected at the upper end of the side wall of the steel pipe column through an automatic leveling cradle head, the photosensitive sensor comprises a downward plane photosensitive plate, a vertical downward laser is arranged at the center of the plane photosensitive plate, a reflector is fixedly arranged on the side wall of the steel pipe column below the photosensitive sensor and is an upward convex mirror, and the connecting line of the swing center point of the laser on the cradle head and the center of the mirror surface of the reflector is located on the axial plane of the steel pipe column.
2. The structure for measuring and adjusting the perpendicularity of the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, is characterized in that: the lateral wall of steel-pipe column is equipped with the inclinometer pipe parallel with the steel-pipe column axis, photosensor sets up in inclinometer pipe upper end, and the speculum sets up at the inclinometer pipe lower extreme.
3. The structure for measuring and adjusting the perpendicularity of the steel pipe column constructed by the foundation pit reverse construction method according to claim 2, characterized in that: the side that the upper end and the lower extreme of deviational survey pipe lean on the steel-pipe column sets up dodges the groove, and the deviational survey pipe is fixed with the steel-pipe column through a plurality of clamps.
4. The verticality measuring and adjusting structure for the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, 2 or 3, wherein the verticality measuring and adjusting structure comprises the following components: the photosensitive sensors and the reflectors are arranged in two groups on the side wall of the steel pipe column, the two groups of photosensitive sensors and the reflectors are arranged on the side wall of the steel pipe column at intervals of 90 degrees in the circumferential direction, the reflector surface is a cylindrical surface, the axis of the cylindrical surface is arranged along the radial direction of the steel pipe column, and the ejection opening of the laser is in a point shape, a linear shape or a cross shape.
5. The verticality measuring and adjusting structure for the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, 2 or 3, wherein the verticality measuring and adjusting structure comprises the following components: the photosensitive sensor and the reflector are arranged in a group on the side wall of the steel pipe column, the mirror surface of the reflector is a spherical surface, and the ejection hole of the laser is in a point shape or a cross shape.
6. The verticality measuring and adjusting structure for the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, 2 or 3, wherein the verticality measuring and adjusting structure comprises the following components: photosensitive sensor and speculum set up the interval and be L, the cambered surface radius of speculum is R, and R = L, and further L =10 m.
7. The verticality measuring and adjusting structure for the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, 2 or 3, wherein the verticality measuring and adjusting structure comprises the following components: the tripod head comprises an outer ring frame, a middle ring frame and an inner ring frame, the outer ring frame is fixed with the side wall of the steel pipe column through a connecting rod, a transverse hinge shaft is arranged between the outer ring frame and the middle ring frame, a longitudinal hinge shaft is arranged between the middle ring frame and the inner ring frame, and the inner ring frame is provided with a photosensitive sensor.
8. The verticality measuring and adjusting structure for the steel pipe column constructed by the foundation pit reverse construction method according to claim 1, 2 or 3, wherein the verticality measuring and adjusting structure comprises the following components: the lower layer adjusting device comprises four lower layer jacks radially jacking the steel pipe column and four lower adjusting screws radially jacking the steel pipe column, the four lower layer jacks and the four lower adjusting screws are alternately and uniformly arranged around the steel pipe column, the lower layer jacks and the lower adjusting screws are arranged on the adjusting bracket at fixed points, the upper end of the steel pipe column is coaxially welded and extended with a guide column, the upper layer adjusting device comprises four upper layer jacks capable of being radially ejected inwards to the guide column and four upper adjusting screws capable of being radially ejected inwards to the guide column, the upper adjusting screws and the lower adjusting screws are vertically aligned and arranged at fixed points, the upper jack below is equipped with the endless track, and four upper jack equidistance settings and synchronous rotation on the endless track encircle four upper jack's outer lane and be provided with the circle seat that leans on the upper jack outer end.
9. The structure for measuring and adjusting the perpendicularity of the steel pipe column constructed by the foundation pit reverse construction method according to claim 8, characterized in that: 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.
10. The structure for measuring and adjusting the perpendicularity of the steel pipe column constructed by the foundation pit reverse construction method according to claim 8, characterized in that: 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010490702.8A CN111593899A (en) | 2020-06-02 | 2020-06-02 | Steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010490702.8A CN111593899A (en) | 2020-06-02 | 2020-06-02 | Steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure |
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| Publication Number | Publication Date |
|---|---|
| CN111593899A true CN111593899A (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010490702.8A Pending CN111593899A (en) | 2020-06-02 | 2020-06-02 | Steel-pipe column straightness measurement of hanging down of foundation ditch reverse construction adjusts structure |
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| CN (1) | CN111593899A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096099A (en) * | 2020-09-20 | 2020-12-18 | 余代安 | Anti-toppling equipment for building steel structure |
| CN112284301A (en) * | 2020-11-17 | 2021-01-29 | 北京城建集团有限责任公司 | Verticality detection system with telescopic circular pipe column circle center self-positioning function |
| CN112392260A (en) * | 2020-10-14 | 2021-02-23 | 中国建筑第二工程局有限公司 | Automatic steel column correcting device for building construction and construction method |
| CN114197525A (en) * | 2021-11-29 | 2022-03-18 | 中铁二局集团有限公司 | Verticality control method for steel pipe column by back-inserting method |
| CN114775683A (en) * | 2021-02-09 | 2022-07-22 | 北京住总集团有限责任公司 | Leveling device for underground construction platform |
| CN114855768A (en) * | 2022-05-07 | 2022-08-05 | 中铁二十局集团第四工程有限公司 | Steel pipe column positioning construction method |
| CN115961622A (en) * | 2023-03-16 | 2023-04-14 | 中铁十七局集团建筑工程有限公司 | Pile foundation steel column positioning and verticality adjusting device and construction method thereof |
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2020
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112096099B (en) * | 2020-09-20 | 2022-01-25 | 深圳市鸣致科技有限公司 | Anti-toppling equipment for building steel structure |
| CN112096099A (en) * | 2020-09-20 | 2020-12-18 | 余代安 | Anti-toppling equipment for building steel structure |
| CN112392260B (en) * | 2020-10-14 | 2022-06-24 | 中国建筑第二工程局有限公司 | Automatic steel column correcting device for building construction and construction method |
| CN112392260A (en) * | 2020-10-14 | 2021-02-23 | 中国建筑第二工程局有限公司 | Automatic steel column correcting device for building construction and construction method |
| CN112284301B (en) * | 2020-11-17 | 2021-09-24 | 北京城建集团有限责任公司 | Verticality detection system with telescopic circular pipe column circle center self-positioning function |
| CN112284301A (en) * | 2020-11-17 | 2021-01-29 | 北京城建集团有限责任公司 | Verticality detection system with telescopic circular pipe column circle center self-positioning function |
| CN114775683A (en) * | 2021-02-09 | 2022-07-22 | 北京住总集团有限责任公司 | Leveling device for underground construction platform |
| CN114775683B (en) * | 2021-02-09 | 2024-02-27 | 北京住总集团有限责任公司 | Leveling device for underground construction platform |
| CN114197525A (en) * | 2021-11-29 | 2022-03-18 | 中铁二局集团有限公司 | Verticality control method for steel pipe column by back-inserting method |
| CN114197525B (en) * | 2021-11-29 | 2023-01-10 | 中铁二局集团有限公司 | Verticality control method for steel pipe column by back-inserting method |
| CN114855768A (en) * | 2022-05-07 | 2022-08-05 | 中铁二十局集团第四工程有限公司 | Steel pipe column positioning construction method |
| CN115961622A (en) * | 2023-03-16 | 2023-04-14 | 中铁十七局集团建筑工程有限公司 | Pile foundation steel column positioning and verticality adjusting device and construction method thereof |
| CN115961622B (en) * | 2023-03-16 | 2023-06-16 | 中铁十七局集团建筑工程有限公司 | Pile foundation steel upright post positioning and verticality adjusting device and construction method thereof |
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