CN110205936B

CN110205936B - Arc-shaped stepped cable tower beam side template and construction method thereof

Info

Publication number: CN110205936B
Application number: CN201910375449.9A
Authority: CN
Inventors: 谢朋林; 高璞; 赵文磊; 高杰; 黎人亮; 陈诗祥; 李明; 刘传东; 彭浩; 耿文斌; 张敏月; 赵云雷; 张文朋
Original assignee: China Construction Sixth Engineering Division Co Ltd
Current assignee: China Construction Sixth Engineering Division Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2023-12-12
Anticipated expiration: 2039-05-07
Also published as: CN110205936A

Abstract

The invention provides an arc-shaped stepped cable tower beam side template and a construction method thereof, wherein the arc-shaped stepped cable tower beam side template comprises a plurality of planar templates, cambered steel templates are respectively arranged between two adjacent planar templates, upper connecting angle steel is fixedly connected to the tops of the planar templates and the cambered steel templates together, lower connecting angle steel is fixedly connected to the bottoms of the planar templates and the cambered steel templates together, planar reinforcing ribs for increasing rigidity are fixedly arranged on the planar templates, opposite pull rods are penetrated through the planar templates, back ridge structures are fixedly connected to the ends of the opposite pull rods, cambered reinforcing ribs are fixedly arranged on the cambered steel templates, and support frame structures are arranged between the cambered steel templates and the adjacent lower-level planar templates. The invention solves the pouring difficulty of the arc-shaped stepped cable tower beam and realizes good pouring quality; the support frame structure can bear concrete load at the variable width position of the arc-shaped stepped cross beam, so that the support structure is prevented from being newly erected at the variable width position, the construction is simple and convenient, and the economical efficiency is better; the construction method reduces the aerial work load and reduces the risk of aerial work.

Description

Arc-shaped stepped cable tower beam side template and construction method thereof

Technical Field

The invention relates to the field of construction of large-span bridge cable towers, in particular to an arc-shaped stepped cable tower beam side template and a construction method thereof.

Background

In recent years, the construction of large-span bridges in China has achieved remarkable achievement worldwide, and the bridge construction level in China has been in the front of the world no matter how large the bridge spans, the number and the structural form. Under the premise of meeting the mechanical property requirement, the bridge gradually develops towards the combination direction of special shape, aesthetic and mechanical properties, and brings new challenges for bridge construction. The upper cross beam of the suspension cable/cable-stayed bridge is developed into a stepped shape from a simple plane shape; from a planar arc, a widening stepped arc is developed.

In the cast-in-place concrete structure, a general bottom template bears vertical load by a bracket, and a side template bears horizontal load by a pair of pull rods. For the upper cross beam of the arc-shaped stepped cable tower, the lower part of the longitudinal bridge is narrow and the upper part of the longitudinal bridge is wide, and the longitudinal bridge is widened step by step from bottom to top, so that a plurality of bottom surfaces are formed; the transverse bridge presents an arc shape to the transverse beam, and the transverse beam is higher in a step at the arc line. For large suspension bridges, the span of the upper cross beam can reach more than 30 meters, and a profile steel combined bracket with high safety is adopted as a bearing structure. For the inverted stepped arc-shaped upper cross beam of the cable tower, due to the fact that the bottom surfaces with different heights exist, for example, the profile steel support with different sagittal-span ratios is designed, labor and effort are wasted, economy is poor, and operation is extremely difficult. To date, no quick, simple, time-saving and labor-saving construction method is available for pouring construction of the arc-shaped stepped upper beam, and the construction quality, effect and design intention of the upper beam are difficult to be guaranteed.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provides an arc-shaped stepped cable tower beam side template and a construction method thereof.

The invention adopts the following technical scheme to realize the aim:

an arc stepped cable tower beam side template comprises a plurality of plane templates, the number of the plane templates is the same as the number of steps corresponding to the arc stepped cable tower beams, the plane templates are respectively the same as the shape of the arc steps corresponding to the arc stepped cable tower beams, all the plane templates are vertical and are mutually parallel, the planes of two adjacent plane templates are arranged at a distance of one step, an arc steel template is arranged between the two adjacent plane templates, the arc steel templates are respectively fixedly connected with the plane templates at two sides, the plane templates and the arc steel templates jointly form a plurality of arc steps,

the top parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are higher than the concrete pouring surface, the top parts of the plane template and the cambered surface steel template are fixedly connected with upper connecting angle steel together, the bottom parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are fixedly connected with lower connecting angle steel together, screw holes which are convenient for connecting adjacent section templates are arranged on the upper connecting angle steel and the lower connecting angle steel,

The plane template is fixedly provided with a plane reinforcing rib for increasing rigidity, the plane template is provided with a plurality of through holes, the through holes are internally penetrated with opposite pull rods, the opposite pull rods are penetrated through the inner cavity of the arc-shaped stepped cable tower beam and are arranged, two ends of the opposite pull rods penetrate out of the through holes on the plane templates at two sides, the end parts of the opposite pull rods are fixedly connected with back ridge structures, the end parts of the opposite pull rods are limited with the plane template through the back ridge structures, the back ridge structures are attached to the plane reinforcing ribs,

the cambered surface steel forms are fixedly provided with cambered surface reinforcing ribs for increasing rigidity, and support frame structures for increasing rigidity are arranged between the cambered surface steel forms and the adjacent lower-level plane forms.

Further, the plane templates and the cambered surface steel templates are vertically intersected, the number of the plane templates is three, and the plane templates are a first-order plane steel template, a second-order plane steel template and a third-order plane steel template respectively; the number of cambered surface steel templates is two, namely a first cambered surface steel template and a second cambered surface steel template.

Further, the planar reinforcing ribs comprise planar longitudinal ribs and planar transverse ribs which are arranged in a staggered mode, the planar longitudinal ribs are arranged vertically, and the planar transverse ribs are arranged horizontally and positioned between the planar longitudinal ribs; the cambered surface reinforcing rib comprises cambered surface longitudinal ribs and cambered surface transverse ribs which are arranged in a staggered manner.

Furthermore, back-to-back channel steel is adopted for equidistant arrangement of the back-to-back rib structures, and channel steel flange plates of the back-to-back rib structures are closely attached to the plane longitudinal ribs and vertically intersected; two channel steel units forming back-to-back channel steel are separated by a certain distance so as to facilitate the passing of the pull rod; the end parts of the opposite pull rods are anchored on the back edge structure through bolts, and the number of the opposite pull rods is comprehensively determined according to the length of the back edge structure and the lateral pressure requirement of concrete.

Further, the upper connecting angle steel and the lower connecting angle steel are equal-sided angle steel.

Further, the support frame structure is triangular, and the support frame structure includes bearing structure and connection structure, and bearing structure passes through connection structure and cambered surface steel form and adjacent subordinate plane template fixed connection, and bearing structure adopts back to the angle steel, and connection structure adopts the gusset plate.

Furthermore, the plane longitudinal ribs adopt a channel steel structure, and are arranged on the plane template in a through length and equidistant mode.

Further, the plane transverse ribs are made of steel plates with rectangular sections and are arranged on the plane templates at equal intervals.

A construction method of an arc stepped cable tower beam side template comprises the following specific steps:

s1: when the hydraulic climbing formwork is used for constructing the N-1 section tower column, N is an integer larger than 1, arc-shaped stepped cross beam arch foot parts are cast together, corbels are embedded, and the corbels can bear the weight of a side template on the corbels; the bracket is connected with the lower connecting angle steel through bolts;

S2: machining and manufacturing a beam side template of the Nth-segment arc-shaped stepped cable tower;

s3: erecting a cable tower beam bracket or a bracket to finish a load pre-pressing experiment; installing and paving a bottom die plate structure of a cable tower cross beam; binding the steel bars of the beam of the N-th section cable tower, and forming a steel bar framework by means of the rigidity of the steel bars;

s4: the construction N-th segment arc-shaped stepped cable tower beam side template is transported to the vicinity of a cable tower, the tower crane is adopted to lift the arc-shaped stepped cable tower beam side template at one side, so that lower connecting angle steel falls onto the bracket in the step S1, and the lower connecting angle steel is fixedly connected with the bracket by bolts; temporarily fixing the arc-shaped stepped cable tower beam side template on the steel reinforcement framework in the step S3; repeating the operation to finish the hoisting and temporary fixing of the template on the other side of the beam;

s5: finishing the installation of the inner template and the inner supporting structure of the inner cavity of the beam of the construction N-section cable tower;

s6: the tower crane is matched with manual adjustment of the positions of the side templates at two sides; finishing perforation operation of the pull rod and installation operation of the back ridge structure, and fastening bolts at two ends of the pull rod; the installation operation of constructing the side templates of the beam of the N-section arc-shaped stepped cable tower is completed;

S7: adopting a ground pump to pour and construct an N-section stepped arc-shaped cable tower beam; when concrete is poured, a long-arm type inserted vibrating rod is adopted to vibrate the newly poured concrete; after the concrete is poured to the position of the sectioning line, covering, sprinkling and curing are timely carried out; and finishing the concrete pouring operation of constructing the N-section cable tower beam.

Further, the specific steps of processing and manufacturing the side template of the beam of the cable tower for constructing the N-th segment arc-shaped step type cable tower in the step S2 are as follows:

(a) Cutting and welding the materials to form a first-stage plane steel template, a second-stage plane steel template and a third-stage plane steel template;

(b) Respectively drawing the positions and the shapes of a connecting structure, a through hole, a plane longitudinal rib and a plane transverse rib on the first-stage plane steel template, the second-stage plane steel template and the third-stage plane steel template;

(c) Punching the positions of the reserved holes of the pull rods drawn on the first-stage plane steel template, the second-stage plane steel template and the third-stage plane steel template to form through holes; welding corresponding node plates at the positions of the connecting structures drawn on the first-stage plane steel templates, the second-stage plane steel templates and the third-stage plane steel templates;

(d) Cutting and welding the materials to form a rectangle after the first-order cambered steel template and the second-order cambered steel template are unfolded, and drawing a connecting structure, and positions and shapes of cambered longitudinal ribs and cambered transverse ribs on the rectangle;

(e) Manufacturing a jig of a first-order cambered surface steel template and a second-order cambered surface steel template, spreading the expanded rectangular templates of the first-order cambered surface steel template and the second-order cambered surface steel template on the jig, welding a connecting structure, cambered surface longitudinal ribs and cambered surface transverse ribs at the corresponding positions of drawing, and encrypting cambered surface transverse ribs at the positions where the cambered surface transverse ribs collide with the node plates at the front and rear rows of the node plates to form the cambered surface steel template;

(f) The specific operation of splicing and welding the first-order cambered surface steel template and the first-order plane steel template is as follows: lifting the first-order cambered surface steel template to be separated from the jig frame, moving to the ground and rotating to enable the first-order cambered surface steel template to be in contact with the ground in a corresponding arc; hoisting the first-stage cambered surface steel template again to align the arc line of the first-stage cambered surface steel template with the corresponding arc line of the first-stage planar steel template, and welding the first-stage cambered surface steel template and the first-stage planar steel template together;

(g) Welding and installing a support frame structure between the first-stage cambered surface steel templates and the first-stage plane steel templates one by one;

(h) Welding and installing a planar longitudinal rib and an arc-surface longitudinal rib at the corresponding positions drawn by the first-stage planar steel template and the first-stage arc-surface steel template, and cutting off the planar longitudinal rib or the arc-surface longitudinal rib at the collision position and enabling the planar longitudinal rib or the arc-surface longitudinal rib to be in contact with the support frame structure if the planar longitudinal rib or the arc-surface longitudinal rib collides with the support frame structure; welding and installing a plane transverse rib and an arc surface transverse rib at the corresponding positions, and if the plane transverse rib or the arc surface transverse rib collides with the support frame structure, not welding the plane transverse rib or the arc surface transverse rib at the collision position, and additionally arranging the plane transverse rib or the arc surface transverse rib at the position close to the collision position to form a component A;

(i) Repeating the steps (a) - (h) to complete the assembly and welding of the second-stage planar steel template, the second-stage cambered steel template, the supporting frame structure of the second-stage cambered steel template, the planar reinforcing ribs and the cambered reinforcing ribs to form a component B;

(j) And assembling and welding the components A and B manufactured by the steps, and finally assembling and welding a component C formed by the third-stage plane steel template and the plane reinforcing ribs with an assembly body of the component A and the component B to manufacture the beam side template of the construction N-th segment arc-shaped stepped cable tower.

The beneficial effects of the invention are as follows:

1) The side template structure and the construction method can solve the pouring problems that the lower part of the arc-shaped stepped cable tower beam is narrow and the upper part is wide, and the bottom surfaces with different heights exist, and realize good pouring quality of the arc-shaped stepped cable tower beam concrete;

2) The support frame structure adopted by the invention can bear concrete load at the variable width position of the arc-shaped stepped cross beam, and the support structure is prevented from being newly erected at the variable width position, so that the construction is simpler and more convenient, and the economy is better;

3) The method adopted by the invention realizes the integral prefabrication and integral hoisting of the two dimension templates, greatly reduces the aerial work load and effectively reduces the risk of aerial work.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of a support frame structure;

FIG. 3 is a cross-sectional view of a planar template;

FIG. 4 is a schematic perspective view of the present invention when installed;

FIG. 5 is a schematic view of the construction of an N-th segment sideform;

FIG. 6 is a schematic view of a construction of an n+1th segment sideform;

in the figure: 1-a first-order plane steel template; 2-a second-order planar steel template; 3-third-order plane steel templates; 4-upper connecting angle steel; 5-lower connecting angle steel; 6-plane longitudinal ribs; 7-planar cross ribs; 8-a back ridge structure; 9-a pair of pull rods; 10-a first-order cambered surface steel template; 11-a second-order cambered surface steel template; 12-a support frame structure; 13-cambered surface transverse ribs; 14-cambered surface longitudinal ribs; 15-a load-bearing structure; 16-connection structure; 17-bolts; 18-through holes; 19-constructing an N-1 segment; 20-arch feet; 21-corbels; 22-constructing an N section;

the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

Detailed Description

The invention is further illustrated by the following examples:

The top parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are higher than the concrete pouring surface, the top parts of the plane template and the cambered surface steel template are fixedly connected with an upper connecting angle steel 4 together, the bottom parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are fixedly connected with a lower connecting angle steel 5 together, screw holes which are convenient for connecting adjacent section templates are arranged on the upper connecting angle steel 4 and the lower connecting angle steel 5,

the plane template is fixedly provided with a plane reinforcing rib for increasing rigidity, the plane template is provided with a plurality of through holes 18, the through holes 18 are internally penetrated with opposite pull rods 9, the opposite pull rods 9 are penetrated through the inner cavities of the arc-shaped ladder-type cable tower cross beams and the two ends of the opposite pull rods penetrate out from the through holes 18 on the plane templates at two sides, the end parts of the opposite pull rods 9 are fixedly connected with back ridge structures 8, the end parts of the opposite pull rods 9 are limited with the plane template through the back ridge structures 8, the back ridge structures 8 are attached to the plane reinforcing rib,

the cambered surface steel form is fixedly provided with cambered surface reinforcing ribs for increasing rigidity, and a supporting frame structure 12 for increasing rigidity is arranged between the cambered surface steel form and the adjacent lower-level plane form.

Further, the plane templates and the cambered surface steel templates are vertically intersected, the number of the plane templates is three, and the plane templates are a first-stage plane steel template 1, a second-stage plane steel template 2 and a third-stage plane steel template 3 respectively; the number of cambered surface steel templates is two, namely a first cambered surface steel template 10 and a second cambered surface steel template 11.

Further, the planar reinforcing ribs comprise planar longitudinal ribs 6 and planar transverse ribs 7 which are arranged in a staggered manner, the planar longitudinal ribs 6 are arranged vertically, and the planar transverse ribs 7 are arranged horizontally and positioned between the planar longitudinal ribs 6; the cambered surface reinforcing rib comprises cambered surface longitudinal ribs 14 and cambered surface transverse ribs 13 which are arranged in a staggered manner.

Furthermore, back-to-back channel steel is adopted in equidistant arrangement of the back-to-back rib structures 8, and channel steel flange plates of the back-to-back rib structures 8 are tightly attached to the plane longitudinal ribs 6 and vertically intersected; the two channel steel units forming the back-to-back channel steel are at a certain distance so as to facilitate the passing of the pull rod 9; the end parts of the opposite pull rods 9 are anchored on the back edge structures 8 through bolts 17, and the number of the opposite pull rods 9 is comprehensively determined according to the length of the back edge structures and the lateral pressure requirements of concrete.

Further, the upper connecting angle steel 4 and the lower connecting angle steel 5 are equal-sided angle steel.

Further, the supporting frame structure 12 is triangular, the supporting frame structure 12 comprises a bearing structure 15 and a connecting structure 16, the bearing structure 15 is fixedly connected with the cambered surface steel template and the adjacent lower-level plane template through the connecting structure 16, the bearing structure 15 is back-to-back angle steel, and the connecting structure 16 is a gusset plate.

Further, the planar longitudinal ribs 6 are in a channel steel structure, and the planar longitudinal ribs 6 are arranged on the planar formwork in a through length and equidistant mode.

Further, the planar cross ribs 7 are formed of a steel plate having a rectangular cross section and are arranged at equal intervals on the planar template.

s1: when the hydraulic climbing formwork is used for constructing the N-1 section 19 tower column, N is an integer larger than 1, an arc-shaped stepped beam arch foot 20 part is cast together, a bracket 21 is embedded, and the bracket 21 can bear the weight of a side template on the bracket; bracket 21 is connected with lower connecting angle 5 through bolts;

s2: processing and manufacturing a side template of the beam of the arc-shaped stepped cable tower for constructing the Nth section 22;

s3: erecting a cable tower beam bracket or a bracket to finish a load pre-pressing experiment; installing and paving a bottom die plate structure of a cable tower cross beam; binding the steel bars of the N-th section 22 cable tower beam, and forming a steel bar framework by means of the rigidity of the steel bars;

s4: the construction N-th section 22 arc-shaped step-type cable tower beam side template is transported to the vicinity of a cable tower, the tower crane is adopted to lift the arc-shaped step-type cable tower beam side template at one side, so that the lower connecting angle steel 5 falls onto the bracket 21 in the step S1, and the lower connecting angle steel 5 is fixedly connected with the bracket 21 by bolts; temporarily fixing the arc-shaped stepped cable tower beam side template on the steel reinforcement framework in the step S3; repeating the operation to finish the hoisting and temporary fixing of the template on the other side of the beam;

S5: finishing the installation of the inner template and the inner supporting structure of the beam inner cavity of the Nth section 22 cable tower;

s6: the tower crane is matched with manual adjustment of the positions of the side templates at two sides; the perforation operation of the pull rod 9 and the installation operation of the back ridge structure 8 are completed, and bolts 17 at two ends of the pull rod 9 are fastened; the installation operation of constructing the side templates of the beam of the N-th segment 22 arc-shaped stepped cable tower is completed;

s7: adopting a ground pump to pour and construct an N-th segment 22 stepped arc-shaped cable tower beam; when concrete is poured, a long-arm type inserted vibrating rod is adopted to vibrate the newly poured concrete; after the concrete is poured to the position of the sectioning line, covering, sprinkling and curing are timely carried out; and the concrete pouring operation of constructing the N-th section 22 cable tower beam is completed.

Further, the specific steps of processing and manufacturing the side template of the beam of the cable tower for constructing the N-th segment 22 arc-shaped step type cable tower in the step S2 are as follows:

(a) Cutting and welding the materials to form a first-stage plane steel template 1, a second-stage plane steel template 2 and a third-stage plane steel template 3;

(b) The positions and the shapes of the connecting structure 16, the through hole 18, the plane longitudinal rib 6 and the plane transverse rib 7 are respectively drawn on the first-stage plane steel template 1, the second-stage plane steel template 2 and the third-stage plane steel template 3;

(c) Punching the positions of the reserved holes of the draw bars drawn on the first-stage plane steel template 1, the second-stage plane steel template 2 and the third-stage plane steel template 3 to form through holes 18; corresponding node plates are welded at the positions of connecting structures 16 drawn on the first-stage plane steel template 1, the second-stage plane steel template 2 and the third-stage plane steel template 3;

(d) Cutting and welding the materials to form a rectangle after the first-order cambered surface steel molding plate 10 and the second-order cambered surface steel molding plate 11 are unfolded, and drawing the positions and the shapes of the connecting structure 16, the cambered surface longitudinal ribs 14 and the cambered surface transverse ribs 13 on the rectangle;

(e) Manufacturing a jig frame of a first-stage cambered surface steel template 10 and a second-stage cambered surface steel template 11, spreading the rectangular expanded templates of the first-stage cambered surface steel template 10 and the second-stage cambered surface steel template 11 on the jig frame, welding a connecting structure 16, a cambered surface longitudinal rib 14 and a cambered surface transverse rib 13 at the corresponding positions, and encrypting the cambered surface transverse rib 13 at the positions where the cambered surface transverse rib 13 collides with the node plates at the front and rear rows of the node plates to form the cambered surface steel template;

(f) The first-order cambered surface steel template 10 and the first-order plane steel template 1 are spliced and welded, and the specific operation is as follows: lifting the first-stage cambered surface steel template 10 to be separated from the jig frame, moving to the ground and rotating by 90 degrees to enable the first-stage cambered surface steel template 10 to be in contact with the ground in a corresponding arc; hoisting the first-stage cambered surface steel template 10 again to align the arc line of the first-stage cambered surface steel template with the corresponding arc line of the first-stage planar steel template 1, and welding the first-stage cambered surface steel template 10 and the first-stage planar steel template 1 together;

(g) Welding and installing a support frame structure 12 between the first-stage cambered surface steel template 10 and the first-stage plane steel template 1 one by one;

(h) Welding and installing a plane longitudinal rib 6 and an arc-surface longitudinal rib 14 at the corresponding positions drawn by the first-stage plane steel template 1 and the first-stage arc-surface steel template 10, and cutting off the plane longitudinal rib 6 or the arc-surface longitudinal rib 14 at the collision position and enabling the plane longitudinal rib 6 or the arc-surface longitudinal rib 14 to be in contact with the support frame structure 12 if the plane longitudinal rib 6 or the arc-surface longitudinal rib 14 collides with the support frame structure 12; the plane transverse rib 7 and the cambered surface transverse rib 13 are welded and installed at the corresponding positions, if the plane transverse rib 7 or the cambered surface transverse rib 13 collides with the supporting frame structure 12, the plane transverse rib 7 or the cambered surface transverse rib 13 is not welded at the collision position, and the plane transverse rib 7 or the cambered surface transverse rib 13 is additionally arranged at the position close to the collision position to form a component A;

(i) Repeating the steps (a) - (h) to complete the assembly and welding of the second-stage planar steel template 2 and the second-stage cambered steel template 11 and the support frame structure 12, the planar reinforcing ribs and the cambered reinforcing ribs thereof to form a component B;

(j) And assembling and welding the components A and B manufactured by the steps, and finally assembling and welding a component C formed by the third-stage plane steel template 3 and the plane reinforcing ribs and an assembly body of the component A and the component B to manufacture the beam side template of the construction N-th segment 22 arc-shaped stepped cable tower.

Example 1

As shown in the figure, the arc-shaped stepped cable tower beam side template comprises a plurality of steel plane templates with the thickness of 6mm, the number of the plane templates is the same as the number of the step stages corresponding to the arc-shaped stepped cable tower beams, the plane templates are respectively the same as the shape of the plurality of arc-shaped steps of the corresponding arc-shaped stepped cable tower beams, all the plane templates are vertical and are mutually parallel, the planes of two adjacent plane templates are arranged at a distance of one step, cambered surface steel templates are respectively arranged between the two adjacent plane templates, the cambered surface steel templates are respectively fixedly connected with the plane templates at two sides, the plane templates and the cambered surface steel templates jointly form a plurality of arc-shaped steps,

the top parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are 15cm higher than the concrete pouring surface, the top parts of the plane template and the cambered surface steel template are fixedly connected with an upper connecting angle steel 4 together, the bottom parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are fixedly connected with a lower connecting angle steel 5 together, screw holes which are convenient for connecting the adjacent section templates are arranged on the upper connecting angle steel 4 and the lower connecting angle steel 5,

the plane template is fixedly provided with a plane reinforcing rib for increasing rigidity, the plane template is provided with a plurality of through holes 18, the through holes 18 are internally penetrated with counter pull rods 9, the inner diameter of each through hole 18 is larger than the diameter of each counter pull rod 9 by 4mm, the counter pull rods 9 are penetrated through the inner cavities of the arc-shaped stepped cable tower cross beams and the two ends of each counter pull rod 9 penetrate out of the through holes 18 on the plane templates at two sides, the end parts of the counter pull rods 9 are fixedly connected with back ridge structures 8, the end parts of the counter pull rods 9 are limited with the plane template through the back ridge structures 8, the back ridge structures 8 are attached to the plane reinforcing ribs,

Further, the planar reinforcing ribs comprise planar longitudinal ribs 6 and planar transverse ribs 7 which are arranged in a staggered manner, the planar longitudinal ribs 6 are arranged vertically, the planar longitudinal ribs 6 are arranged at equal intervals, and the planar transverse ribs 7 are arranged horizontally and are positioned between the planar longitudinal ribs 6; the cambered surface reinforcing rib comprises cambered surface longitudinal ribs 14 and cambered surface transverse ribs 13 which are arranged in a staggered manner.

Furthermore, back-to-back channel steel with the model of double-spliced C12.6 is arranged at equal intervals on the back-to-back rib structures 8, channel steel flange plates of the back-to-back rib structures 8 are closely attached to the plane longitudinal ribs 6 and vertically intersected with the plane longitudinal ribs 6, and the back-to-back rib structures 8 are arranged at equal intervals and have the interval of 1000mm; the two channel steel units forming the back-to-back channel steel are at a certain distance so as to facilitate the passing of the pull rod 9; the end parts of the counter-pull rods 9 are anchored on the back edge structures 8 through bolts 17, the number of the counter-pull rods 9 is comprehensively determined according to the length of the back edge structures and the lateral pressure requirement of concrete, and the counter-pull rods 9 are reinforced bars with the diameter of 28 mm.

Further, the upper connecting angle steel 4 and the lower connecting angle steel 5 are equal-sided angle steel with the model of L50 multiplied by 5.

Further, the supporting frame structure 12 is triangular, the circumferential included angle of the adjacent supporting frame structures 12 is not larger than 4 degrees, the supporting frame structure 12 comprises a bearing structure 15 and a connecting structure 16, the bearing structure 15 is fixedly connected with the cambered steel template and the adjacent lower-level plane template through the connecting structure 16, the bearing structure 15 adopts back-to-back angle steel with the model of L50 multiplied by 5, and the connecting structure 16 adopts a node plate with the thickness of 10 mm.

Further, the planar longitudinal ribs 6 are of a channel steel structure with the model number of C10, and the planar longitudinal ribs 6 are arranged on the planar template in a through length and equidistant mode and have a distance of 350mm.

Further, the planar cross ribs 7 are formed of steel plates having a thickness of 8mm and a rectangular cross section, and are arranged on the planar template at equal intervals at intervals of 1000mm.

s1: when the hydraulic climbing formwork is used for constructing the N-1 section 19 tower column, N is an integer larger than 1, arc-shaped step-type cross beam arch feet 20 are cast together, brackets 21 with the model of L50 multiplied by 5 and an equilateral angle steel structure are embedded, and the brackets 21 can bear the weight of a side template on the brackets; bracket 21 is connected with lower connecting angle 5 through bolts;

Example two

As shown in the figure, the arc-shaped stepped cable tower beam side template comprises a plurality of steel plane templates with the thickness of 7mm, the number of the plane templates is the same as the number of the step stages corresponding to the arc-shaped stepped cable tower beams, the plane templates are respectively the same as the shape of the plurality of arc-shaped steps of the corresponding arc-shaped stepped cable tower beams, all the plane templates are vertical and are mutually parallel, the planes of two adjacent plane templates are arranged at a distance of one step, cambered surface steel templates are respectively arranged between the two adjacent plane templates, the cambered surface steel templates are respectively fixedly connected with the plane templates at two sides, the plane templates and the cambered surface steel templates jointly form a plurality of arc-shaped steps,

The top parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are 20cm higher than the concrete pouring surface, the top parts of the plane template and the cambered surface steel template are fixedly connected with an upper connecting angle steel 4 together, the bottom parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are fixedly connected with a lower connecting angle steel 5 together, screw holes which are convenient for connecting the adjacent section templates are arranged on the upper connecting angle steel 4 and the lower connecting angle steel 5,

Furthermore, back-to-back channel steel with the model of double-spliced C12.6 is arranged at equal intervals on the back-to-back rib structures 8, channel steel flange plates of the back-to-back rib structures 8 are closely attached to the plane longitudinal ribs 6 and vertically intersected with the plane longitudinal ribs 6, and the back-to-back rib structures 8 are arranged at equal intervals and have the interval of 900mm; the two channel steel units forming the back-to-back channel steel are at a certain distance so as to facilitate the passing of the pull rod 9; the end parts of the counter-pull rods 9 are anchored on the back edge structures 8 through bolts 17, the number of the counter-pull rods 9 is comprehensively determined according to the length of the back edge structures and the lateral pressure requirement of concrete, and the counter-pull rods 9 are reinforced bars with the diameter of 30 mm.

Further, the supporting frame structure 12 is triangular, the circumferential included angle of the adjacent supporting frame structures 12 is not larger than 4 degrees, the supporting frame structure 12 comprises a bearing structure 15 and a connecting structure 16, the bearing structure 15 is fixedly connected with the cambered steel template and the adjacent lower-level plane template through the connecting structure 16, the bearing structure 15 adopts back-to-back angle steel with the model of L50 multiplied by 5, and the connecting structure 16 adopts a node plate with the thickness of 12 mm.

Further, the planar longitudinal ribs 6 are of a channel steel structure with the model number of C10, and the planar longitudinal ribs 6 are arranged on the planar template in a through length and equidistant mode and have a distance of 400mm.

Further, the planar cross ribs 7 are formed of a steel plate having a thickness of 10mm and a rectangular cross section, and are provided on the planar form at equal intervals of 900mm.

Example III

As shown in the figure, the arc-shaped stepped cable tower beam side template comprises a plurality of steel plane templates with the thickness of 8mm, the number of the plane templates is the same as the number of the step stages corresponding to the arc-shaped stepped cable tower beams, the plane templates are respectively the same as the shape of the plurality of arc-shaped steps of the corresponding arc-shaped stepped cable tower beams, all the plane templates are vertical and are mutually parallel, the planes of two adjacent plane templates are arranged at a distance of one step, cambered surface steel templates are respectively arranged between the two adjacent plane templates, the cambered surface steel templates are respectively fixedly connected with the plane templates at two sides, the plane templates and the cambered surface steel templates jointly form a plurality of arc-shaped steps,

the plane template is fixedly provided with a plane reinforcing rib for increasing rigidity, the plane template is provided with a plurality of through holes 18, the through holes 18 are internally penetrated with opposite pull rods 9, the inner diameter of each through hole 18 is larger than the diameter of each opposite pull rod 9 by 5mm, each opposite pull rod 9 is penetrated through the inner cavity of the arc-shaped stepped cable tower cross beam and two ends of each opposite pull rod 9 penetrate out of the through holes 18 on the plane templates at two sides, the end parts of each opposite pull rod 9 are fixedly connected with a back ridge structure 8, the end parts of each opposite pull rod 9 are limited with the plane template through the back ridge structure 8, the back ridge structure 8 is attached to the plane reinforcing rib,

Furthermore, back-to-back channel steel with the model of double-spliced C12.6 is arranged at equal intervals on the back-to-back rib structures 8, channel steel flange plates of the back-to-back rib structures 8 are closely attached to the plane longitudinal ribs 6 and vertically intersected with the plane longitudinal ribs 6, and the back-to-back rib structures 8 are arranged at equal intervals and have the interval of 1200mm; the two channel steel units forming the back-to-back channel steel are at a certain distance so as to facilitate the passing of the pull rod 9; the end parts of the counter-pull rods 9 are anchored on the back edge structures 8 through bolts 17, the number of the counter-pull rods 9 is comprehensively determined according to the length of the back edge structures and the lateral pressure requirement of concrete, and the counter-pull rods 9 are reinforced bars with the diameter of 28 mm.

Further, the planar longitudinal ribs 6 are of a channel steel structure with the model number of C10, and the planar longitudinal ribs 6 are arranged on the planar template in a through length and equidistant mode and have a distance of 300mm.

Further, the flat cross ribs 7 are formed of a steel plate having a thickness of 10mm and a rectangular cross section, and are provided on the flat form at equal intervals of 1200mm.

While the invention has been described above with reference to specific embodiments, it will be apparent that the invention is not limited to the above embodiments, but is intended to cover various modifications of the method concepts and technical solutions of the invention, or applications without modifications, in other applications.

Claims

1. The arc stepped cable tower beam side template comprises a plurality of plane templates, and is characterized in that the number of the plane templates is the same as the number of the steps corresponding to the arc stepped cable tower beams, the plane templates are respectively the same as the shape of the arc steps corresponding to the arc stepped cable tower beams, all the plane templates are vertical and are mutually parallel, the distance between the planes of two adjacent plane templates is set at a step distance, cambered steel templates are arranged between the two adjacent plane templates, the cambered steel templates are respectively fixedly connected with the plane templates at two sides, the plane templates and the cambered steel templates jointly form a plurality of arc steps,

The top parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are higher than the concrete pouring surface, the top parts of the plane template and the cambered surface steel template are jointly fixedly connected with an upper connecting angle steel (4), the bottom parts of the plane template and the cambered surface steel template are both positioned on the same horizontal plane and are jointly fixedly connected with a lower connecting angle steel (5), screw holes which are convenient for connecting adjacent section templates are respectively arranged on the upper connecting angle steel (4) and the lower connecting angle steel (5),

the plane template is fixedly provided with a plane reinforcing rib for increasing rigidity, the plane template is provided with a plurality of through holes (18) and the through holes (18) are internally penetrated with opposite pull rods (9), the opposite pull rods (9) penetrate through the inner cavities of the arc-shaped ladder-type cable tower cross beams and the two ends of the arc-shaped ladder-type cable tower cross beams penetrate out from the through holes (18) on the plane templates at two sides, the end parts of the opposite pull rods (9) are fixedly connected with back edge structures (8), the end parts of the opposite pull rods (9) are limited with the plane template through the back edge structures (8), the back edge structures (8) are attached to the plane reinforcing ribs,

the cambered surface steel forms are fixedly provided with cambered surface reinforcing ribs for increasing rigidity, and support frame structures (12) for increasing rigidity are arranged between the cambered surface steel forms and the adjacent lower-level plane forms.

2. The arc stepped cable tower beam side template according to claim 1, wherein the plane templates are vertically intersected with the arc steel templates, and the number of the plane templates is three, namely a first-stage plane steel template (1), a second-stage plane steel template (2) and a third-stage plane steel template (3); the number of cambered surface steel templates is two, namely a first cambered surface steel template (10) and a second cambered surface steel template (11).

3. The arc stepped pylon crossbeam side form of claim 2 wherein the planar stiffening ribs include staggered planar longitudinal ribs (6) and planar transverse ribs (7), the planar longitudinal ribs (6) being vertically disposed, the planar transverse ribs (7) being horizontally disposed and located between the planar longitudinal ribs (6); the cambered surface reinforcing rib comprises cambered surface longitudinal ribs (14) and cambered surface transverse ribs (13) which are arranged in a staggered manner.

4. The arc stepped cable tower beam side template according to claim 3, wherein back-to-back channel steel is adopted for equidistant arrangement of the back-to-back ridge structures (8), and channel steel flange plates of the back-to-back ridge structures (8) are tightly attached to the plane longitudinal ribs (6) and vertically intersected; two channel steel units forming back-to-back channel steel are positioned at a certain distance so as to facilitate the passing of the pull rod (9); the end parts of the opposite pull rods (9) are anchored on the back edge structures (8) through bolts (17), and the number of the opposite pull rods (9) is comprehensively determined according to the lengths of the back edge structures and the lateral pressure requirements of concrete.

5. The arc stepped pylon crossbeam sideform of claim 4 wherein both the upper (4) and lower (5) connection angles are equilateral angles.

6. The arc stepped cable tower beam side template according to claim 5, wherein the supporting frame structure (12) is triangular, the supporting frame structure (12) comprises a bearing structure (15) and a connecting structure (16), the bearing structure (15) is fixedly connected with the arc steel template and the adjacent lower-level plane template through the connecting structure (16), the bearing structure (15) is opposite to the angle steel, and the connecting structure (16) is a gusset plate.

7. The arc stepped cable tower beam side formwork according to claim 6, wherein the planar longitudinal ribs (6) are in a channel steel structure, and the planar longitudinal ribs (6) are arranged on the planar formwork in a through length and equidistant manner.

8. An arc-shaped step-type cable tower beam side template according to claim 7, characterized in that the plane transverse ribs (7) are made of steel plates with rectangular cross sections and are arranged on the plane template at equal intervals.

9. A method for constructing an arc stepped cable tower beam side template according to claim 8, which is characterized by comprising the following specific steps:

s1: when the hydraulic climbing formwork is used for constructing the N-1 section (19) tower column, wherein N is an integer larger than 1, the arc-shaped step-type cross beam arch foot (20) is cast together, the bracket (21) is embedded, and the bracket (21) can bear the weight of a side template on the bracket; the bracket (21) is connected with the lower connecting angle steel (5) through bolts;

s2: processing and manufacturing a side template of the beam of the arc-shaped stepped cable tower for constructing the Nth section (22);

s3: erecting a cable tower beam bracket or a bracket to finish a load pre-pressing experiment; installing and paving a bottom die plate structure of a cable tower cross beam; binding the steel bars of the beam of the cable tower of the Nth section (22), and forming a steel bar framework by means of the rigidity of the steel bars;

s4: the construction N-th section (22) arc-shaped step-type cable tower beam side template is transported to the vicinity of a cable tower, the tower crane is adopted to hoist the arc-shaped step-type cable tower beam side template at one side, so that lower connecting angle steel (5) falls onto the bracket (21) in the step S1, and the lower connecting angle steel (5) is fixedly connected with the bracket (21) by bolts; temporarily fixing the arc-shaped stepped cable tower beam side template on the steel reinforcement framework in the step S3; repeating the operation to finish the hoisting and temporary fixing of the template on the other side of the beam;

S5: finishing the installation of the inner template and the inner supporting structure of the inner cavity of the beam of the cable tower for constructing the Nth section (22);

s6: the tower crane is matched with manual adjustment of the positions of the side templates at two sides; finishing perforating operation of the pull rod (9) and mounting operation of the back ridge structure (8), and fastening bolts (17) at two ends of the pull rod (9); namely, the installation operation of constructing the side templates of the arc-shaped stepped cable tower cross beams of the N th section (22) is completed;

s7: adopting a ground pump to pour and construct an N-th section (22) stepped arc-shaped cable tower beam; when concrete is poured, a long-arm type inserted vibrating rod is adopted to vibrate the newly poured concrete; after the concrete is poured to the position of the sectioning line, covering, sprinkling and curing are timely carried out; and finishing the concrete pouring operation of constructing the N-th section (22) cable tower cross beam.

10. The construction method of the arc-shaped step type cable tower beam side template according to claim 9, wherein the specific steps of processing and manufacturing the construction nth segment (22) arc-shaped step type cable tower beam side template in the step S2 are as follows:

(a) Cutting and welding the materials to form a first-stage plane steel template (1), a second-stage plane steel template (2) and a third-stage plane steel template (3);

(b) The positions and the shapes of the connecting structure (16), the through hole (18), the plane longitudinal rib (6) and the plane transverse rib (7) are respectively drawn on the first-stage plane steel template (1), the second-stage plane steel template (2) and the third-stage plane steel template (3);

(c) Punching the positions of the reserved holes of the pull rods drawn on the first-stage plane steel template (1), the second-stage plane steel template (2) and the third-stage plane steel template (3) to form through holes (18); corresponding node plates are welded at the positions of connecting structures (16) drawn on the first-stage plane steel template (1), the second-stage plane steel template (2) and the third-stage plane steel template (3);

(d) Cutting and welding the materials to form a rectangle after the first-order cambered surface steel template (10) and the second-order cambered surface steel template (11) are unfolded, and drawing the positions and the shapes of the connecting structure (16), the cambered surface longitudinal ribs (14) and the cambered surface transverse ribs (13) on the rectangle;

(e) Manufacturing a jig frame of a first-order cambered surface steel template (10) and a second-order cambered surface steel template (11), spreading the expanded rectangular templates of the first-order cambered surface steel template (10) and the second-order cambered surface steel template (11) on the jig frame, welding a connecting structure (16), a cambered surface longitudinal rib (14) and a cambered surface transverse rib (13) at corresponding positions of the drawing, and encrypting the cambered surface transverse rib (13) at the position where the cambered surface transverse rib (13) collides with the node plate at the front and rear rows of the node plate to form the cambered surface steel template;

(f) The first-order cambered surface steel template (10) and the first-order plane steel template (1) are spliced and welded, and the concrete operation is as follows: lifting the first-order cambered surface steel template (10) off the jig frame, moving to the ground and rotating by 90 degrees to enable the corresponding arc of the first-order cambered surface steel template (10) to be in contact with the ground; hoisting the first-stage cambered surface steel template (10) again to align the arc line of the first-stage cambered surface steel template with the corresponding arc line of the first-stage planar steel template (1), and welding the first-stage cambered surface steel template (10) and the first-stage planar steel template (1) together;

(g) A supporting frame structure (12) between the first-stage cambered surface steel template (10) and the first-stage plane steel template (1) is welded and installed one by one;

(h) Welding and installing a plane longitudinal rib (6) and an arc-surface longitudinal rib (14) at the corresponding positions drawn by the first-stage plane steel template (1) and the first-stage arc-surface steel template (10), and cutting off the plane longitudinal rib (6) or the arc-surface longitudinal rib (14) at the collision position and enabling the plane longitudinal rib (6) or the arc-surface longitudinal rib (14) to be in contact with the support frame structure (12) if the plane longitudinal rib (6) or the arc-surface longitudinal rib (14) collides with the support frame structure (12); welding a plane transverse rib (7) and an arc surface transverse rib (13) at the corresponding positions, and if the plane transverse rib (7) or the arc surface transverse rib (13) collides with the support frame structure (12), not welding the plane transverse rib (7) or the arc surface transverse rib (13) at the collision position, and additionally arranging the plane transverse rib (7) or the arc surface transverse rib (13) at the position close to the collision position to form a component A;

(i) Repeating the steps (a) - (h) to finish the assembly and welding of the second-stage planar steel template (2) and the second-stage cambered steel template (11) and the supporting frame structure (12), the planar reinforcing ribs and the cambered reinforcing ribs to form a component B;

(j) And assembling and welding the components A and B manufactured by the steps, and finally assembling and welding a component C formed by the third-stage plane steel template (3) and the plane reinforcing ribs thereof and an assembled body of the components A and B to manufacture the beam side template of the arc-shaped step cable tower for constructing the N-th section (22).