CN113047637B - Adjusting method for guiding and positioning prefabricated stand column - Google Patents

Adjusting method for guiding and positioning prefabricated stand column Download PDF

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CN113047637B
CN113047637B CN202110339013.1A CN202110339013A CN113047637B CN 113047637 B CN113047637 B CN 113047637B CN 202110339013 A CN202110339013 A CN 202110339013A CN 113047637 B CN113047637 B CN 113047637B
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position point
theoretical position
top surface
stand column
calculation
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CN113047637A (en
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张鲲鹏
丁北斗
李�杰
马占国
蒋海里
李柏亮
庞哲
秦天琦
郜景林
施岑岑
徐娜娜
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Transportation Construction Investment Co ltdZhengzhou
China University of Mining and Technology CUMT
Shanghai Road and Bridge Group Co Ltd
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Transportation Construction Investment Co ltdZhengzhou
China University of Mining and Technology CUMT
Shanghai Road and Bridge Group Co Ltd
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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
    • 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
    • E04G21/165—Tools or apparatus specially adapted for in situ prefabricated building elements to be tilted up in position
    • 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
    • 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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  • Structural Engineering (AREA)
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Abstract

The invention provides a method for adjusting the guiding and positioning of a prefabricated stand column, which comprises the following steps: s10, obtaining calculation parameters according to the design drawing; s20, obtaining the calculation theoretical position point coordinates of four vertexes of the rectangular surface of the top surface of the bearing platform through calculation parameters, and converting the four calculation theoretical position point coordinates into four approximate theoretical position points through approximate calculation; s30, obtaining actual position points by using a laser guide instrument, judging whether the column needs to be adjusted according to the distance m between any actual position point and the corresponding calculated theoretical position point and the allowable error [ D ], and outputting the horizontal displacement of the reserved steel bar at the top of the column, the verticality change of the column and the elevation change of the top surface central point when the column needs to be adjusted. The adjusting method for the guiding and positioning of the prefabricated stand column can quickly finish the adjusting and mounting work of the stand column, meet the precision requirement of splicing with the capping beam, and do not need to carry out high-altitude operation, so as to improve the construction safety, the working efficiency and the construction precision of field construction personnel.

Description

Method for adjusting guide positioning of prefabricated stand column
Technical Field
The invention relates to the technical field of prefabricated building construction, in particular to a method for adjusting the guiding and positioning of a prefabricated stand column.
Background
With the development of the transportation industry, the urban viaduct develops rapidly. The cast-in-place urban viaduct has a long construction period and great influence on the surrounding urban environment, and can not meet the urgent need of urban development, so that the prefabricated viaduct can be developed. The prefabricated viaduct upper structure in China develops early, a mature construction process is formed, the lower structure starts later, but develops rapidly, and a plurality of construction processes such as a grouting sleeve technology, a grouting metal corrugated pipe technology and a prestress technology are formed.
The mounting precision of the column in the prefabricated viaduct substructure as a connecting member of the capping beam and the bearing platform is particularly important. The technical scheme adopted at present is that the prefabricated upright posts and the prefabricated capping beams are connected through a grouting sleeve method, namely after the prefabricated upright posts are positioned, sleeves at the bottoms of the prefabricated capping beams are sleeved on reinforcing steel bars at the tops of the prefabricated upright posts, and then high-grade cement mortar is poured.
And if the splicing of the bent cap and the upright is to be finished, the distance between the uprights is designed according to a design drawing. Generally speaking, considering construction error, the sleeve internal diameter is slightly more than stand top reinforcing bar diameter, but the threshold value is only about 5mm, if the stand installation accuracy is low excessively, the phenomenon that bent cap and stand can't be connected can appear, and then need the reposition, extravagant time limit for a project.
In addition, the currently adopted upright post positioning method lacks safety and convenience, and is specifically embodied in that constructors need to climb on upright posts with the height of several meters, and a tape measure is used for measuring the diagonal distance of reinforcing steel bars at the tops of the two upright posts. After measurement, if the position of the upright post needs to be adjusted, a pry bar, an inclined strut and the like are needed. And after adjustment, measuring, and repeating the steps. The construction unit therefore requires the design of a guide frame device to avoid such operations.
The guide frame device is designed and processed based on a self-adaptive principle, and a laser guide instrument is utilized to extend the top surface steel bars of the upright posts to the outside of the plane of the upright posts along the diagonal direction and project the top surface steel bars to the top surface of the bearing platform; the actual position point of a single upright column is adjusted to be coincident with the preset theoretical position point of the upright column as far as possible, and if the distance between the two positions is closer, the higher the mounting precision of the upright column is represented. At present, the method needs a lot of calculation on a construction site by constructors, such as determination of theoretical position points and the like, so that the workload of the constructors is greatly increased, and errors in the construction site cannot be avoided manually.
Therefore, an adjustment method is needed to replace manual calculation, and the applicability and construction precision of the guide frame device are improved.
Disclosure of Invention
In order to solve the problems, the invention provides a method for adjusting the guiding and positioning of a prefabricated stand column, which can judge whether the stand column needs to be adjusted or not according to the deviation of the approximate theoretical position point position and the actual position point position of the top surface of a bearing platform during construction, can quickly finish the adjustment and installation work of the stand column, meets the precision requirement of splicing with a cover beam, does not need to carry out high-altitude operation, and improves the construction safety, the working efficiency and the construction precision of field construction personnel.
In order to achieve the above purpose, the invention adopts a technical scheme that:
a method for adjusting the guiding and positioning of a prefabricated upright column comprises the following steps: s10, obtaining calculation parameters according to the design drawing, wherein the calculation parameters comprise the central distances L and B of two steel bars at four vertex positions of the rectangular surface on the top surface of the bearing platform and the distance L from the central point of any steel bar at the vertex to the central point of the fixed position of the laser guide instrument1(ii) a S20, obtaining the coordinates of the theoretical position points of the four vertexes of the rectangular surface of the top surface of the bearing platform by calculating the parametersThe approximate calculation converts the coordinates of the four calculation theoretical position points into four approximate theoretical position points; s30, obtaining actual position points by using a laser guide instrument, and calculating the distance m and the allowable error [ D ] between any actual position point and the corresponding theoretical position point according to the actual position point and the corresponding theoretical position point]Judging whether the stand column needs to be adjusted or not; wherein, when m ismax≤[D]In the process, the upright posts do not need to be adjusted; when m ismin＞[D]In time, the upright posts need to be adjusted;
Figure BDA0002998757820000021
[d]＝(Dint-drein)/2，Dintis the inner diameter of the sleeve at the bottom of the bent cap, dreinIs the diameter of the steel bar at the top of the upright column, mmaxIs the maximum value of m at any one of four top points of the top surface of the bearing platform, mminIs the minimum value of m at any one of the four vertexes of the top surface of the bearing platform.
Further, in the step S30, when [ D ]]∈[mmin，mmax) And p of any one vertex of four vertexes of the rectangular surface on the top surface of the bearing platform is less than or equal to [ D [, D [ ]]N, no adjustment of the column is required; otherwise, the upright posts need to be adjusted; wherein p is the distance between any actual position point and the corresponding approximate theoretical position point, and n is the distance between any approximate theoretical position point and the corresponding calculated theoretical position point.
Further, the step S20 includes: s21, determining coordinates of four calculation theoretical position points according to the geometric algebraic relation; s22, according to the actual measurement precision, rounding the calculated theoretical position point coordinates to obtain approximate theoretical position point coordinates; and S23, outputting the coordinate value of the approximate theoretical position point, and calibrating the top surface of the bearing platform to obtain the approximate theoretical position point.
Further, when the stand column needs to be adjusted, the adjusting mode of the stand column comprises: when the actual position point needs to move along the direction along the bridge or perpendicular to the direction along the bridge, selecting one edge of the bottom surface of the heightening upright post; when actual position point location need move along the diagonal direction of four summit reinforcing bars at the stand top, select a summit of bed hedgehopping stand bottom surface.
Further, the adjusting method obtains a corresponding adjusting result, and includes: the horizontal displacement of the reserved steel bars at the top of the stand column, the change of the verticality of the stand column and the elevation change of the center point of the top surface of the stand column.
Compared with the prior art, the technical scheme of the invention has the following advantages:
according to the method for adjusting the guiding and positioning of the prefabricated stand column, whether the stand column needs to be adjusted or not can be judged according to the actual measurement distance between the approximate theoretical position point and the actual position point of the top surface of the bearing platform during construction, corresponding adjustment results can be obtained according to different adjustment modes, the adjustment and installation work of the stand column can be rapidly completed, the precision requirement of splicing with the cover beam is met, high-altitude operation is not needed, and the construction safety, the working efficiency and the construction precision of field constructors are improved.
Drawings
The technical solution and the advantages of the present invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.
Fig. 1 is a flowchart illustrating a method for adjusting the guiding and positioning of a prefabricated column according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an X-shaped guide frame according to an embodiment of the present invention, wherein (a) is a plan view of the guide frame, and (b) is a side view of a guide arm of the guide frame;
FIG. 3 is a diagram illustrating a positional relationship between a rectangular top surface of a platform and a laser guide according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a triangle formed by approximating theoretical position points, calculating theoretical position points, and actual position points according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating an allowable error [ D ] according to an embodiment of the present invention.
Fig. 6 shows a method for adjusting the horizontal projection of the actual position point of the top of the pillar according to an embodiment of the present invention, in which (a) is one edge of the bottom surface of the raised pillar, and (b) is one vertex of the bottom surface of the raised pillar.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment provides a method for adjusting the guiding and positioning of a prefabricated stand column, as shown in fig. 1, comprising the following steps: s10, obtaining calculation parameters according to the design drawing, wherein the calculation parameters comprise the central distances L and B of two steel bars at four vertex positions of the rectangular surface on the top surface of the bearing platform and the distance L from the central point of any steel bar at the vertex to the central point of the fixed position of the laser guide instrument1. S20, calculating parameters to obtain the coordinates of the four vertexes of the rectangular surface of the top surface of the bearing platform, and converting the coordinates of the four calculation theoretical positions into four approximate theoretical positions by approximate calculation. S30, obtaining actual position points by using a laser guide instrument, and calculating the distance m and the allowable error [ D ] between any actual position point and the corresponding theoretical position point according to the actual position point and the corresponding theoretical position point]Judging whether the stand column needs to be adjusted or not; wherein, when mmax≤[D]In time, the upright posts do not need to be adjusted; when m ismin＞[D]In time, the upright posts need to be adjusted;
Figure BDA0002998757820000051
[d]＝(Dint-drein)/2，Dintis the inner diameter of the sleeve at the bottom of the bent cap, dreinIs the diameter of the steel bar at the top of the upright column, mmaxIs the maximum value of m at any one of four top points of the top surface of the bearing platform, mminIs the minimum value of m at any one of the four vertexes of the top surface of the bearing platform.
As shown in figure 2, the main body part of the guide frame is X-shaped, the telescopic part can freely stretch out and draw back in a certain range, the first connecting end of the telescopic part is fixed on the main body of the X-shaped guide frame, the laser guide instrument is fixed at the second connecting end of the telescopic part, and the laser guide instrument is hinged on the device through a universal joint, so that the laser guide instrument can freely rotate and is always vertical to the ground and downwards under the action of dead weight. The actual position point location is obtained by utilizing the vertical projection of the guide frame laser guide instrument to the top surface of the bearing platform.
The step S20 includes: s21, determining four calculation theoretical position point coordinates according to the geometric algebraic relation. Before placing the upright column, determining the central point of the bottom surface of the upright column on the top surface of the bearing platform by using a total station, and establishing a Cartesian rectangular coordinate system by taking the central point as the origin of coordinates, the direction along the bridge as a y-axis and the direction perpendicular to the direction along the bridge as an x-axis. As shown in FIG. 3, the coordinates of the four calculated theoretical positions are (a)1,a2)、(b1,b2)、(c1,c2) And (d)1,d2) Wherein a is1＝d1＝-(L/2+L1cosψ)，b1＝c1＝L/2+L1cosψ，a2＝b2＝B/2+L1sinψ，c2＝d2＝-a2，
Figure BDA0002998757820000052
And S22, according to the actual measurement precision, rounding the calculated theoretical position point coordinates to obtain approximate theoretical position point coordinates. And S23, outputting the coordinate value of the approximate theoretical position point, and calibrating the top surface of the bearing platform to obtain the approximate theoretical position point.
In step S30, as shown in fig. 4 to 5, point E represents an actual position point, point F represents a myopic theoretical position point, point G represents a calculated theoretical position point, a dotted line represents a theoretical position, and a solid line represents an actual position, m is a distance between any actual position point and a corresponding calculated theoretical position point, p is a distance between any actual position point and a corresponding approximate theoretical position point, n is a distance between any approximate theoretical position point and a corresponding calculated theoretical position point, a rectangular surface of a top surface of the support platform has four vertices, i.e., has four sets of m, n, and p values, and a maximum value of m can be calculated according to a geometric characteristic of a triangle, where m is mminIs the minimum value of m, mmaxIs the maximum value of m. When [ D ]]∈[mmin，mmax) And p of any one vertex of four vertexes of the rectangular surface on the top surface of the bearing platform is less than or equal to [ D [, D [ ]]At-n, it is not necessaryAdjusting the upright post; otherwise, the column needs to be adjusted.
When the stand needs to be adjusted, the adjusting mode of the stand includes: when the actual position point needs to move along the direction along the bridge or perpendicular to the direction along the bridge, selecting one edge of the bottom surface of the heightening upright post; when the actual position point position needs to move along the diagonal direction of the four top steel bars at the top of the upright post, one top point of the bottom surface of the heightening upright post is selected. The adjusting method obtains a corresponding adjusting result, and comprises the following steps: the horizontal displacement of the reserved steel bars at the top of the stand column, the change of the verticality of the stand column and the elevation change of the center point of the top surface of the stand column.
When the upright column needs to be adjusted, a corresponding adjusting mode is selected, the column height and the required padding height are input, and the plane displacement and the direction of the horizontal projection point of the actual position point position are obtained. Adjusted to mmax≤[D]Or p is less than or equal to [ D ]]And n, calculating and outputting the results of the verticality of the stand column and the elevation change of the center point of the top surface.
As shown in fig. 6, when the actual position point needs to move along the direction of the bridge or perpendicular to the direction of the bridge, one side of the bottom surface of the raised upright is selected. When the actual position point position needs to move along the diagonal direction of the four top steel bars at the top of the upright post, one top point of the bottom surface of the heightening upright post is selected. And when the upright column needs to be adjusted, selecting an adjusting mode, and inputting the height of the upright column and the required padding height to obtain the plane displacement and direction of the horizontal projection point of the actual position point.
As shown in fig. 6(a), the cross section of the upright column corresponds to the rectangular surface of the top surface of the bearing platform, that is, the center distances of two adjacent steel bars are L and B, two sides corresponding to the cross section can be used as pad heights to change, the side with the length of L on the cross section of the upright column is referred to as L side for short, and the side with the length of B on the cross section of the upright column is referred to as B side for short. The displacement change of the actual position points of the 'fixing edge' and the 'heightening edge' on the top surface of the bearing platform is given by taking the heightening L edge as an example. Wherein the fixed edge is the opposite edge of the heightening edge and respectively corresponds to s1And s2：
s1＝Hsinα
Figure BDA0002998757820000071
Figure BDA0002998757820000072
Wherein H is the height of the upright post, and H is the height of the pad.
The change alpha of the verticality of the upright column obtained by the calculation formula is a radian system and needs to be converted into an angle system alpha through the following formula1：
Figure BDA0002998757820000073
Elevation H of center point of top surface of upright column1The variation can be calculated according to the following formula:
Figure BDA0002998757820000074
β1＝arctan(2B/H)
the actual position point will move along the direction of the L side under the adjusting method.
As shown in fig. 6(b), taking the point on the bottom surface of the pillar corresponding to the pad-up point C as an example, the displacement change of each actual position point on the top surface of the platform is given, and the point moves along the diagonal direction under the adjustment method.
Figure BDA0002998757820000075
Figure BDA0002998757820000076
Figure BDA0002998757820000077
Figure BDA0002998757820000081
Figure BDA0002998757820000082
Height H of center point of top surface of upright post2Variation and column verticality alpha2The variation can be calculated according to the following formula:
Figure BDA0002998757820000083
Figure BDA0002998757820000084
Figure BDA0002998757820000085
example 1
S10, obtaining the calculation parameters L1700 mm, B1200 mm and L according to the design drawing1The height H of the upright column is 5000mm, the inner diameter of the sleeve is 30mm, and the diameter of the steel bar is 26 mm;
s21, determining and calculating theoretical position point coordinates according to the geometric-algebraic relation, wherein the theoretical position point coordinates are (-1013.39,715.337), (1013.39,715.337), (-1013.39, -715.337), (-1013.39, -715.337);
s22, according to the actual measurement precision, rounding the calculated theoretical position point coordinates to obtain approximate theoretical position point coordinates which are (-1013,715), (1013,715), (-1013, -715) and (1013, -715);
s23, calibrating the top surface of the bearing platform to obtain an approximate theoretical position point;
s30, obtaining an actual position point by using a laser guide instrument, wherein the distances p between the actual position point and the approximate theoretical position point are measured to be 1.8mm, 1.4mm, 1.2mm and 0.9mm respectively, and n is equal to n
Figure BDA0002998757820000086
I.e. the theory of approximationThe theoretical position point and the distance n of the theoretical position point are both 0.5154mm, and the following inequality exists according to the geometric characteristics of the triangle: | n-p | non-conducting phosphor<m<n + p, obtaining upper limits of m of 2.3154mm, 1.9154mm, 1.7154mm and 1.4154mm, respectively, and lower limits of m of 1.2846mm, 0.8846mm, 0.6846mm and 0.3846mm, respectively.
Allowable error
Figure BDA0002998757820000091
To obtain mmax＝2.3154mm，mmin0.3846mm, the upper limit of the four groups of m values is 2.3154mm, 1.9154mm, 1.7154mm and 1.4154mm which are all less than 2.3845mm, so the upright post does not need to be adjusted.
Example 2
S10, obtaining a calculation parameter L of 1700mm, B of 1200mm, L1 of 200mm, height H of an upright column of 5000mm, inner diameter of a sleeve of 29mm and diameter of a reinforcing steel bar of 26mm according to a design drawing;
s21, determining and calculating theoretical position point coordinates according to the geometric-algebraic relation, wherein the theoretical position point coordinates are (-1013.39,715.337), (1013.39,715.337), (-1013.39, -715.337), (-1013.39, -715.337);
s22, according to the actual measurement precision, rounding the calculated theoretical position point coordinates to obtain approximate theoretical position point coordinates which are (-1013,715), (1013,715), (-1013, -715) and (1013, -715);
s23, calibrating the top surface of the bearing platform to obtain an approximate theoretical position point;
s30, obtaining an actual position point by using a laser guide instrument, wherein the distances p between the actual position point and the approximate theoretical position point are measured to be 1.8mm, 1.4mm, 1.2mm and 0.9mm respectively, and n is equal to n
Figure BDA0002998757820000092
Namely, the distances n between the approximate theoretical position point and the calculated theoretical position point are both 0.5154mm, and the following inequalities exist according to the geometric characteristics of the triangle: | n-p | non-conducting phosphor<m<n + p, obtaining upper limits of m of 2.3154mm, 1.9154mm, 1.7154mm and 1.4154mm, respectively, and lower limits of m of 1.2846mm, 0.8846mm, 0.6846mm and 0.3846mm, respectively.
Allowable error
Figure BDA0002998757820000093
To obtain mmax＝2.3154mm，mmin0.3846mm, so [ D]∈[mmin，mmax)，[D]-n 1.2729mm, greater than [ D ] when p 1.8mm or when p 1.4mm]N, the column needs to be adjusted.
Adjusting the upright column by heightening the B edge, wherein the height of the heightening is 1mm to obtain s1＝2.9412mm，s2＝2.9415mm；
And re-measuring the distance between the approximate theoretical position point location and the actual position point location, outputting the verticality change of the upright column of 0.0337 degrees and the elevation change of the center point of the top surface of the upright column of 0.4991mm if the maximum requirement is met, and otherwise, continuously adjusting the upright column until the maximum requirement is met.
The above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that are transformed by the content of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (3)

1. A method for adjusting the guiding and positioning of a prefabricated stand column is characterized by comprising the following steps:
s10, obtaining calculation parameters according to the design drawing, wherein the calculation parameters comprise the central distances L and B of two steel bars at four vertex positions of the rectangular surface on the top surface of the bearing platform and the distance L from the central point of any steel bar at the vertex to the central point of the fixed position of the laser guide instrument1；
S20, obtaining the calculation theoretical position point coordinates of four vertexes of the rectangular surface of the top surface of the bearing platform through calculation parameters, and converting the four calculation theoretical position point coordinates into four approximate theoretical position points through approximate calculation;
the step S20 includes: s21, determining coordinates of four calculation theoretical position points according to the geometric algebraic relation; s22, according to the actual measurement precision, rounding the calculated theoretical position point coordinates to obtain approximate theoretical position point coordinates; s23, outputting the coordinate value of the approximate theoretical position point, and calibrating the top surface of the bearing platform to obtain the approximate theoretical position point;
s30, acquiring four actual position points by using a laser guide instrument, keeping the distance between any one actual position point and the corresponding approximate theoretical position point as p, keeping the distance between any one approximate theoretical position point and the corresponding calculated theoretical position point as n, and keeping the distance between any one actual position point and the corresponding calculated theoretical position point as m; wherein p is obtained by field measurement, n is obtained by calculation, m is a range value and is obtained by a geometric triangular relation constructed by n and p; judging whether the stand column needs to be adjusted or not according to the magnitude relation between m and the allowable error [ D ], and outputting the horizontal displacement of the reserved steel bar at the top of the stand column, the verticality change of the stand column and the elevation change of the center point of the top surface of the stand column when the adjustment is needed;
in the step S30, when m ismax≤[D]In time, the upright posts do not need to be adjusted; when m ismin＞[D]When in use, the upright posts need to be adjusted; when [ D ]]∈[mmin,mmax) When the top surface of the bearing platform is in a rectangular shape, if the p of any one vertex of the four vertexes of the rectangular surface of the top surface of the bearing platform is less than or equal to [ D ]]N, no adjustment of the column is required; otherwise, the upright posts need to be adjusted;
Figure FDA0003618682710000011
[d]＝(Dint-drein)/2，Dintis the inner diameter of the sleeve at the bottom of the bent cap, dreinIs the diameter of the steel bar at the top of the upright column, mmaxIs the maximum value of m at any one of four top points of the top surface of the bearing platform, mminIs the minimum value of m at any one of the four vertexes of the top surface of the bearing platform.
2. The method for adjusting the guiding and positioning of the prefabricated upright post according to claim 1, wherein when the upright post needs to be adjusted, the upright post is adjusted in a manner comprising the following steps:
when the actual position point needs to move along the direction along the bridge or perpendicular to the direction along the bridge, selecting one edge of the bottom surface of the heightening upright post;
when the actual position point position needs to move along the diagonal direction of the four top steel bars at the top of the upright post, one top point of the bottom surface of the heightening upright post is selected.
3. The method for adjusting the guiding and positioning of the prefabricated upright post according to claim 2, wherein the adjusting manner obtains a corresponding adjusting result and comprises the following steps: the horizontal displacement of the reserved steel bars at the top of the stand column, the change of the verticality of the stand column and the elevation change of the center point of the top surface of the stand column.
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CN205857035U (en) * 2016-06-07 2017-01-04 上海公路投资建设发展有限公司 A kind of prefabricated stand column and the assembled positioner of cushion cap
CN108894116A (en) * 2018-07-24 2018-11-27 中铁十局集团第五工程有限公司 Prefabricated stand column assembling and construction method
CN110863652A (en) * 2019-11-25 2020-03-06 上海市基础工程集团有限公司 Precise positioning and mounting method for prefabricated and assembled double-section stand column
CN112211106A (en) * 2020-10-29 2021-01-12 中铁四局集团第一工程有限公司 Method for installing prefabricated bent cap of viaduct

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CN205857035U (en) * 2016-06-07 2017-01-04 上海公路投资建设发展有限公司 A kind of prefabricated stand column and the assembled positioner of cushion cap
CN108894116A (en) * 2018-07-24 2018-11-27 中铁十局集团第五工程有限公司 Prefabricated stand column assembling and construction method
CN110863652A (en) * 2019-11-25 2020-03-06 上海市基础工程集团有限公司 Precise positioning and mounting method for prefabricated and assembled double-section stand column
CN112211106A (en) * 2020-10-29 2021-01-12 中铁四局集团第一工程有限公司 Method for installing prefabricated bent cap of viaduct

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