CN114775881B - Dome structure hoisting construction method and mounting and connecting structure - Google Patents

Abstract

The invention discloses a hoisting construction method and an installation and connection structure of a dome structure, wherein the dome structure comprises an edge-closing truss, a corner unit connected to one side in the edge-closing truss, separation truss belts which are connected to the edge-closing truss in an upward direction and are arranged at intervals, separation units connected between the separation truss belts and an arc-shaped truss connected to the middle part of the edge-closing truss in the longitudinal direction; and supporting steel columns are connected below the dome structure at intervals. According to the invention, the support steel column is combined with the segmentation and the targeted design of the dome structure, so that the lower support is provided for the dome structure; dividing the steel frame dome structure to provide a division and partition basis for later installation and hoisting; the middle arc truss is more beneficial to the use of a middle large-span building space under the condition of meeting the requirement of strengthening the middle stress; the arrangement of the separation units and the separation truss belts is beneficial to local reinforcement under the change of the wave curvature; and a truss butt joint gap is reserved, so that the dome structure is favorably and effectively installed and hoisted.

Description

Dome structure hoisting construction method and mounting and connecting structure

Technical Field

The invention belongs to the technical field of steel structures, and particularly relates to a dome structure hoisting construction method and a mounting and connecting structure.

Background

Along with the development of steel structures, the styles of steel structure buildings are more and more complex, and the connection between steel frames and columns in the steel structures, the design of the steel frames or the connection combined with other structural forms are increasingly abundant. To the design of architectural forms such as exhibition hall, stadium or art center not only comparatively complicated in the pattern and also can make great improvement and breakthrough in order to guarantee the linear style at the steel construction, when special-shaped dome structure and lower part cylinder are connected, the hoist and mount installation of cylinder need not guarantee the convenient construction of installation of dome structure as well.

Disclosure of Invention

The invention provides a dome structure hoisting construction method and a mounting and connecting structure, which are used for solving the technical problems of hoisting and mounting a dome structure and a supporting steel column, installing the dome structure in a partition and subsection manner, connecting the supporting steel column and the dome structure and the like.

In order to achieve the purpose, the invention adopts the following technical scheme:

a dome structure hoisting construction method comprises a side-folding truss, corner units connected to one inner side of the side-folding truss, separating truss belts connected to the side-folding truss in an upward direction at intervals, separating units connected between the separating truss belts and an arc-shaped truss connected to the middle of the side-folding truss in the longitudinal direction; supporting steel columns are connected below the dome structure at intervals;

the dome structure is wavy in the horizontal direction and the vertical direction, the length direction of one side of the dome structure is lower than that of the other side of the dome structure, the vertical projection comprises a sharp corner part on one side and a trapezoidal part on the other side of the dome structure, and the periphery of the trapezoidal part is an arc-shaped edge;

the construction method for hoisting the dome structure comprises the following specific steps:

step one, height division is carried out on a support steel column according to the wave shape of a dome structure, and an embedded column base is arranged at the bottom of the support steel column and is supported by an angle steel bracket; the supporting steel column is installed from the middle to the two ends

Step two, installing the angle steel bracket, wherein the angle steel bracket is subjected to intervening construction when the strength of concrete of a pile foundation reaches more than 80%, and the installation sequence is sequentially carried out according to civil engineering subareas; after the civil pile foundation construction is finished, providing a working surface and installing the angle steel brackets, sequentially and alternately installing first sections of steel columns, and constructing support steel columns to a position 1.20 meters above the top elevation of a bearing platform; the basement support steel column is installed and hoisted by adopting a near tower crane;

step three, fixedly connecting the assembled support steel columns in the same vertical direction, connecting the support steel columns through C-shaped steel plates during butt joint, and performing auxiliary construction through temporary supporting pieces when connecting the upper section support steel columns; the supporting steel columns are arranged corresponding to the column bodies in the dome structure and are connected through temporary fixing plates or fixing frames; the supporting steel columns are arranged in unequal lengths according to the layer height and the lower structure of the dome structure, and the top of each supporting steel column can be detachably connected with a positioning plate;

step four, when the supporting steel column is constructed to the dome structure, deepening the steel frame dome structure through CAD and three-dimensional software, and dividing the steel frame dome structure into a pure steel frame and a truss for targeted installation construction;

step five, after the corresponding steel frames in the corner units and the separation units are installed, temporarily fixing the steel frames, and particularly, carrying out encryption temporary support on the reserved gaps at the positions of the separation truss belts and the reserved gaps at the positions of the arc trusses; fixing the steel frame at the segmented hoisting position through a temporary fixing splint until the subsequent integral steel frame is completely installed, and then welding rigid connection nodes at the steel frame splicing position through full penetration; rechecking the position and the line type of the steel frame;

step six, assembling the edge-closing truss, the arc-shaped truss and the separation truss belt on site; setting an assembling operation frame, carrying out all-dimensional measurement and correction on the total length, the width, the height and the like of the operation frame, then establishing a control grid for the placing position of the truss rod piece, and then starting assembling; measuring and paying off the spatial positions of all points of the rod piece, and arranging a limiting block for placing the rod piece;

step seven, during hoisting, firstly, trial hoisting is carried out, the hoisting is stopped when the hoisting height is 100-200 mm, and the firmness of the rigging and the stability of the crane are checked; after the confirmation of no error, the crane can be instructed to slowly ascend to enable the center of the truss to be aligned with the center of the installation position, then the hook is slowly ascended, and the stable mooring ropes in four directions are manually tensioned in the hoisting process to prevent the truss from laterally shaking;

step eight, hoisting the truss to the position above the cylindrical surface, rotating the truss by using a stable cable to align the truss to the splicing position so as to accurately position the truss, slowly positioning the truss, and accurately positioning the side truss and the secondary truss at the elevation relative to the roof truss beam; thereby completing the installation of the dome structure.

Furthermore, the lifting point is positioned on the top connecting lug plate of the supporting steel column, when the column is lifted, the column rotates while lifting the hook, so that the column is vertical, the bottom plate of the column is kept 40 cm-60 cm away from the ground, and the crane arm slowly rotates and falls above the angle steel bracket;

after the first section of supporting steel column circles to the right, the center lines of the two sides are matched with the marked center line of the angle steel bracket, the four sides are considered, the angle steel bracket anchor bolts are aligned and penetrate into anchor bolt holes at the bottom of the column, and wind-holding ropes are adopted for reinforcement to prevent toppling; correcting the first section of column, measuring the elevation, displacement and vertical deviation of the first section of column for primary correction, then screwing down the anchor bolt nut, then performing secondary correction, and then welding with the angle steel bracket.

Further, in the fourth step, the area division synchronous construction is carried out on the edge-closing truss, the corner units, the separation truss belts, the separation units and the arc-shaped truss; and firstly constructing a pure steel frame part and a truss part in the same area.

Further, in the sixth step, the web members of the truss are placed, positioned and temporarily fixed, and the overall position relation is measured and adjusted according to the upper chord member, the lower chord member and the point position marks on the web members to be spliced; after the components are adjusted and fixed, detecting by using a steel ruler, a plumb bob and the like according to point position marks and ground projection points on the pieces to be spliced, fixing by using spot welding, recording and storing detection data, comparing and analyzing with a design drawing, and adjusting if the components do not meet the requirements; if the requirements are met, performing a welding process and a subsequent process.

Furthermore, a separation top connecting column and a separation steel frame in the separation truss band are both installed together with the angle connecting steel frame and the separation unit inner steel frame, wherein joints corresponding to the separation inner trusses are installed on the separation steel frame in advance; after the angle units and the corresponding steel frames in the separation units are installed, the reserved gaps at the positions of the separation truss belts are encrypted to form temporary supports, the installation operation platform is used for installing the separation inner trusses, and the separation inner trusses are installed from the middle to two sides or are installed together in a regional mode.

Furthermore, when the truss is hoisted, binding points are padded in the truss by using soft materials, and the height difference of the left support and the right support of the truss is adjusted when the steel wire ropes are bound, so that the truss can be stably positioned in place in the hoisting process; binding stable cables at two ends of the truss respectively; welding temporary reinforcing and positioning measures before hoisting;

after the truss is installed, the truss is reinforced and fixed by using a cable rope, and after the truss is hoisted in place, the truss needs to be reinforced with the steel beam and the splicing part through a frame butt-joint fixing plate;

the perpendicularity of the steel beam is checked by a theodolite or a total station, the truss can be welded after being corrected to be qualified, and the truss needs to be welded after being temporarily fixed, and the section bar is a round tube and needs to be welded by arranging a round angle suspension cage.

Further, the installation and connection structure of the dome structure comprises a steel frame dome structure, wherein the horizontal direction and the vertical direction of the steel frame dome structure are both wavy, the length direction of one side is lower than that of the other side, the vertical projection comprises a sharp corner part on one side and a trapezoidal part on the other side, and the periphery of the trapezoidal part is an arc-shaped edge;

the steel frame dome structure comprises a side folding truss, a corner unit connected to one side in the side folding truss, separation truss belts connected to the upper side of the side folding truss at intervals, separation units connected between the separation truss belts, and an arc truss connected to the middle of the side folding truss in length.

The edge-closing truss is arranged at the periphery of the steel frame dome structure, the edge-closing truss is wavy in the horizontal direction and the vertical direction, the length direction of one side of the edge-closing truss is lower than that of the other side of the edge-closing truss, and the edge-closing truss comprises a sharp corner part and an arc-shaped trapezoidal part and is integrally shaped like a sharp head knife outer frame; the edge-receiving truss comprises an edge main truss, an edge additional steel frame and an edge additional truss which are connected to one side of a sharp corner of the edge main truss, an edge top column connected to the joint of a truss rod piece and the steel frame, corner connecting frames and edge top connecting frames which are connected to the edge main truss at the two sides of the corner of the connecting corner at the sharp corner of the edge main truss, corner trusses which are connected between the edge top connecting frames and the corner connecting frames, and edge secondary connecting trusses arranged on the opposite sides of the sharp corner;

the main side truss comprises a vertical and vertically arc-shaped main side frame body and a main side frame rib plate connected to the main side frame body, the main side frame body is made of I-shaped steel, the main side truss comprises a sharp corner part and an arc-shaped trapezoidal part, a notch is formed in one side of the sharp corner part, the notch is connected with an additional side steel frame in a staggered mode, and a side jacking column and a supporting steel column connected below the side jacking column are connected in the staggered mode; the side of the arc-shaped trapezoidal part of the side main truss, which is opposite to the sharp corner, is formed by splicing and connecting truss rod pieces;

the side top column comprises a side top column body and a side top column butt joint rod, and the height of the side top column body is not less than the height of the side main truss, the height of the side additional steel frame and the height of the side additional truss; the side top column butt joint rod comprises two rod pieces and a steel plate which are arranged in an I shape, and the two rod pieces which are parallel up and down are correspondingly connected with the side main truss or the side additional truss.

Furthermore, the separation truss belts are arranged at intervals in the longitudinal direction of the trapezoid part of the edge-closing truss and comprise two parallel separation steel frames, separation inner trusses connected between the separation steel frames and separation top connecting columns arranged below the separation trusses at intervals;

the separation inner truss is arranged in an X shape and connected to the vertical upper part of the separation steel frame;

the separation units are arranged between the separation truss belts and are separation steel frames connected in a net shape, the separation steel frames are connected in a cross shape, and the cross-shaped connection position comprises an upper staggered connection and a lower staggered connection and a flush connection.

Furthermore, the arc truss comprises two parallel arc steel frames in a semi-circle shape, an arc main truss connected between the two arc steel frames, an arc frame connecting column and an arc frame butt joint rod connected between the arc steel frame and the separating steel frame respectively, wherein the arc frame connecting column is arranged at the joint of the separating steel frame connected with the arc steel frame and the separating unit;

the arc frame butt joint rod comprises two rod pieces and a steel plate which are arranged in an I shape, and further comprises two rod pieces which are parallel up and down and are correspondingly connected with an arc main truss, the arc main truss is horizontally arranged in a multi-stage W shape, and is vertically connected in a 'single' shape;

the arc frame connecting columns are connected through a steel frame; still the interval connection has directly to link the truss in the semicircle arc within range, directly links the truss and arranges and at the short-range interval along separating the unit length, directly link the truss and be multistage W form setting to the plain direction, be "individual" font connection in vertical.

Furthermore, the angle unit is in an arc-shaped frame-shaped triangle and comprises an angle connecting steel frame, an angle mark connecting top column connected below the cross angle connecting steel frame and an angle side top column connected at the top of the sharp angle of the angle connecting steel frame;

the angle connecting steel frame comprises an angle connecting main frame which is vertically and vertically arc-shaped and angle connecting frame rib plates connected to the angle connecting main frame, and the angle connecting main frame is made of I-shaped steel; the corner edge top column is fixedly connected with the edge folding truss through a steel frame;

the corner mark connecting top column comprises a corner mark connecting top main column and a corner mark connecting top main column connecting end, the height of the corner mark connecting top main column is not less than that of the corner connecting main frame, and the corner mark connecting top main column connecting end is detachably and fixedly connected with the corner mark connecting main frame corresponding to the periphery of the corner mark connecting top main column; the connecting end of the main column at the top of the corner mark is I-shaped.

The invention has the beneficial effects that:

1) According to the invention, the support steel column is combined with the segmentation and the targeted design of the dome structure, so that the lower support is provided for the dome structure; the supporting steel column is detachably and temporarily fixedly connected with the column body in the dome structure, so that the steel frame and the truss can be hoisted and accurately positioned conveniently;

2) According to the invention, the steel frame dome structure is divided, so that the distribution of the connecting positions of the steel frame and the truss in the structure is determined, and a division and partition basis is provided for later installation and hoisting; the steel frame dome structure is a special-shaped structure, the trusses and the steel frame are both arranged in an arc shape or a double curvature mode, wherein the edge-closing trusses provide a modeling and lateral supporting foundation for the whole structure, and the arc-shaped trusses in the middle are more beneficial to the use of a middle large-span building space under the condition that the stress of the middle is enhanced;

3) According to the invention, through the arrangement of the separation units and the separation truss belts, the dome structure is favorably and uniformly reinforced in the longitudinal direction, and the local reinforcement is favorably carried out under the change of the wave curvature; the steel frame is constructed in advance during construction, and the truss butt joint gap is reserved, so that the dome structure is favorably and effectively mounted and hoisted.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the instrumentalities particularly pointed out in the specification.

Drawings

FIG. 1 is a first perspective view of a dome structure and supporting steel columns;

FIG. 2 is a perspective view of a steel frame dome structure and its connection structure;

FIG. 3 is a top view of a steel frame dome structure;

FIG. 4 is a schematic view of a steel frame dome structure and supporting steel columns;

FIG. 5 is a schematic view of corner units and a closed edge truss structure at a sharp corner;

FIG. 6 is a schematic view of corner unit and edge truss connections at a sharp corner;

FIG. 7 is a schematic view of a side main truss splice connection;

FIG. 8 is a schematic structural view of a cross splice of corner units;

FIG. 9 is a schematic view of the corner mark with top post connection at the cross of the corner unit;

FIG. 10 is a schematic view of a split truss belt construction;

FIG. 11 is a schematic view of an arc truss and its connection structure;

FIG. 12 is a schematic view of partial connection of the arc primary trusses;

fig. 13 is a schematic view of the partition unit, the arc-shaped trapezoidal-side main truss and the connection structure thereof.

Reference numerals: 1-supporting steel column, 2-dome structure, 21-edge-receiving truss, 211-edge main truss, 2111-edge main frame body, 2112-edge main frame ribbed plate, 212-edge additional steel frame, 213-edge additional truss, 214-edge top column, 2141-edge top column body, 2142-edge top column butt joint rod, 215-corner connecting frame, 216-edge top connecting frame, 217-corner truss, 218-edge secondary connecting truss, 22-corner unit, 221-corner connecting steel frame, 2211-corner connecting main frame, 2212-corner connecting frame ribbed plate, 222-corner mark connecting top column, 2221-corner mark top main column, 2222-corner mark top main column connecting end, 223-corner edge top column, 23-truss belt, 231-separating steel frame, 232-separating inner truss, 233-separating top connecting column, 24-arc truss separating unit, 25-arc steel frame, 251-arc frame connected column, 253-arc frame main column, 254-arc frame connecting rod, 3-edge connecting frame, 4-arc frame butt joint rod and 5-edge butt joint rod.

Detailed Description

Taking a certain competition venue as an example, the venue is in a steel structure in a building form, and more than four layers of steel columns are connected with a roof steel frame and a truss; the building extension is arranged as an inclined steel column. The competition venue is a steel frame-combined steel plate shear wall structure; the wall is a steel plate shear wall; the plate is a steel bar truss floor bearing plate; wherein the dome structure at the top is wavy and has a length which is lower towards the inside than towards the outside. The steel plate shear wall seismic rating is three-level, and the frame seismic rating is three-level. The foundation form is pile foundation and independent foundation.

As shown in fig. 1 to 13, a method for hoisting and constructing a dome structure, the dome structure 2 comprises a side-folding truss 21, corner units 22 connected to one inner side of the side-folding truss 21, separation truss belts 23 connected to the side-folding truss 21 and arranged at intervals in an upward direction, separation units 24 connected between the separation truss belts 23, and arc-shaped trusses 25 connected to the middle part of the side-folding truss 21 in the upward direction; supporting steel columns 1 are connected below the dome structure 2 at intervals; dome structure 2 is wavy and one side length to being less than the opposite side length to in the horizontal and vertical direction, and vertical projection contains the apex of one side and the trapezoidal portion of opposite side, and trapezoidal portion periphery is the arc limit.

In this embodiment, 2 steel frame dome structure horizontal and vertical direction are wavy and one side length is to being less than the opposite side length to, and vertical projection contains the closed angle portion of one side and the trapezoidal portion of opposite side, and trapezoidal portion periphery is the arc limit.

The steel-frame dome structure 2 comprises a side-folding truss 21, corner units 22 connected to one inner side of the side-folding truss 21, separating truss belts 23 connected to the side-folding truss 21 and arranged upwards at intervals, separating units 24 connected between the separating truss belts 23, and arc-shaped trusses 25 connected to the middle of the side-folding truss 21 in the longitudinal direction.

In this embodiment, the edge-folding truss 21 is arranged at the periphery of the steel frame dome structure 2, the edge-folding truss 21 is wavy in the horizontal direction and the vertical direction, the length of one side is lower than that of the other side, the edge-folding truss 21 comprises a sharp corner part and an arc-shaped trapezoidal part, and the whole edge-folding truss is in a shape of a pointed head knife outer frame; the edge-folding truss 21 includes an edge main truss 211, edge-attaching steel frames 212 and edge-attaching trusses 213 connected to one side of the sharp corner of the edge main truss 211, edge-shores 214 connected to the joints of truss members and steel frames, corner links 215 and edge-top links 216 connected to two side main trusses 211 connected to the corner of the sharp corner of the edge main truss 211, corner trusses 217 connected between the edge-top links 216 and the corner links 215, and edge-secondary trusses 218 disposed on the opposite side of the sharp corner.

In this embodiment, the main side truss 211 includes a main side frame 2111 which is vertically and vertically arc-shaped, and a main side frame rib plate 2112 connected to the main side frame 2111, the main side frame 2111 is made of i-steel, the main side truss 211 includes a sharp corner and an arc-shaped trapezoidal portion, a gap is present on one side of the sharp corner, the gap is connected with an additional steel frame 212 in a staggered manner, and the staggered manner is connected with the side top column 214 and a support steel column 1 connected below the side top column 214; the side of the arc-shaped trapezoidal part of the side main truss 211, which is just opposite to the sharp corner, is formed by splicing and connecting truss rod pieces.

In this embodiment, the side pillar 214 includes a side pillar body 2141 and a side pillar butt rod 2142, and the height of the side pillar body 2141 is not less than the heights of the side main truss 211, the side additional steel frame 212, and the side additional truss 213; the side pillar butt-joint rod 2142 includes two rod members and a steel plate arranged in an i-shape, and further includes two rod members parallel to each other in the up-down direction and connected to the side main truss 211 or the side additional truss 213.

The separation truss belts 23 are arranged at intervals in the length direction of the trapezoid part of the edge-closing truss 21 and comprise two parallel separation steel frames 231, separation inner trusses 232 connected between the separation steel frames 231 and separation top connecting columns 233 arranged below the separation trusses at intervals; the inner separation truss 232 is arranged in an X shape, and the inner separation truss 232 is connected to the vertical upper part of the separation steel frame 231.

In this embodiment, the separation units 24 are disposed between the separation truss bands 23, the separation units 24 are separation steel frames 231 connected in a mesh manner, the separation steel frames 231 are connected in a cross manner, and the cross connection includes vertical staggered connection and flush connection.

The arc truss 25 comprises two parallel arc steel frames 251 in a semi-circle shape, an arc main truss 253 connected between the two arc steel frames 251, an arc frame connecting column 252 arranged at the joint of the arc steel frame 251 and the separating steel frame 231 of the separating unit 24, and an arc frame butt joint rod 254 connected between the arc steel frame 251 and the separating steel frame 231 and the arc frame connecting column 252.

In this embodiment, the arc frame docking rod 254 includes two rod members and a steel plate arranged in an i-shape, and further includes two rod members arranged in parallel up and down and connected to the arc main truss 253, and the arc main truss 253 is horizontally arranged in a multi-stage W-shape and vertically connected in a shape like a Chinese character 'element'.

In this embodiment, the arc frame connecting columns 252 are connected through a steel frame; still the interval connection has directly to link the truss in the semicircle arc within range, directly links the truss and arranges and at the short distance interval along separating unit 24 length, directly link the truss and be multistage W form setting to the plain direction, be "individual" font connection vertically.

The corner unit 22 is an arc frame-shaped triangle and comprises a corner connecting steel frame 221, a corner mark connecting top column 222 connected below the cross corner connecting steel frame 221 and a corner edge top column 223 connected at the top of the sharp corner of the corner connecting steel frame 221; the angle connection steel frame 221 comprises an angle connection main frame 2211 which is vertically and vertically arc-shaped and an angle connection frame ribbed plate 2212 connected to the angle connection main frame 2211, and the angle connection main frame 2211 is made of I-steel; the corner edge top column 223 is fixedly connected with the edge-closing truss 21 through a steel frame.

In this embodiment, the corner mark top-connected column 222 includes a corner mark top main column 2221 and a corner mark top main column connection end 2222, the height of the corner mark top main column 2221 is not less than the height of the corner connection main frame 2211, and the periphery of the corner mark top main column 2221 corresponding to the corner connection main frame 2211 is detachably and fixedly connected with the corner mark top main column connection end 2222; the main column connecting end 2222 at the top of the corner mark is I-shaped.

With reference to fig. 1 to 13, a hoisting construction method for a dome structure 2 is further described, which specifically comprises the following steps:

step one, dividing the height of a support steel column 1 according to the wave shape of a dome structure 2, wherein the bottom of the support steel column 1 is an embedded column base and is supported by an angle steel bracket; the supporting steel column 1 is installed from the middle to two ends.

Step two, the installation of the angle steel bracket is required to be carried out in an intervening construction mode when the concrete strength of the pile foundation reaches more than 80%, and the installation sequence is carried out in sequence according to civil engineering subareas; after the civil pile foundation construction is finished, providing a working surface and completing the installation of the angle steel bracket, sequentially and alternately installing first sections of steel columns, and constructing the support steel columns 1 to a position 1.20 meters above the elevation of the top of a bearing platform; the basement support steel column 1 is installed and hoisted by adopting a near tower crane.

Step three, fixedly connecting the assembled supporting steel columns 1 in the same vertical direction, connecting the supporting steel columns through C-shaped steel plates during butt joint, and performing auxiliary construction through temporary supporting pieces when the upper section supporting steel columns 1 are connected; the supporting steel columns 1 are arranged corresponding to the columns in the dome structure 2 and are connected through temporary fixing plates or fixing frames; the supporting steel column 1 is arranged in unequal lengths according to the layer height and the lower structure of the dome structure 2, and the top of the supporting steel column 1 can be detachably connected with a positioning plate.

In the embodiment, the lifting point is positioned on the top connecting lug plate of the support steel column 1, when the column is lifted, the column rotates while lifting the hook, so that the column is vertical, the bottom plate of the column keeps 40-60 cm away from the ground, and the crane arm slowly rotates and falls above the angle iron bracket.

After the first section of supporting steel column 1 is rotated to the right position, the central lines of two sides are matched with the marked central line of the angle steel bracket, and the angle steel bracket anchor bolts are taken into consideration from four sides, the angle steel bracket anchor bolts are aligned and penetrated into the bolt holes at the column bottom, and wind-holding ropes are adopted for reinforcement to prevent toppling; correcting the first section of column, measuring the elevation, displacement and vertical deviation of the first section of column for primary correction, then screwing down the anchor bolt nut, then performing secondary correction, and then welding with the angle steel bracket.

And step four, when the supporting steel column 1 is constructed to the dome structure 2, deepening the steel frame dome structure 2 through CAD and three-dimensional software, and dividing the steel frame dome structure 2 into two parts, namely a pure steel frame and a truss, for targeted installation and construction.

In the fourth step, the edge-closing truss 21, the corner units 22, the separation truss belts 23, the separation units 24 and the arc truss 25 are subjected to region division synchronous construction; and firstly constructing a pure steel frame part and a truss part in the same area.

Step five, after the corresponding steel frames in the corner units 22 and the separation units 24 are installed, temporarily fixing the steel frames, and particularly, carrying out encryption temporary support on the reserved gaps at the positions of the separation truss belts 23 and the reserved gaps at the positions of the arc trusses 25; fixing the steel frames at the segmented hoisting positions through temporary fixing splints until the subsequent integral steel frame is installed, and welding rigid connection nodes at the splicing positions of the steel frames through full penetration; and rechecking the position and line type of the steel frame.

For the separation truss belt, the separation top connecting column 233 and the separation steel frame 231 are both installed together with the angle connecting steel frame 221 and the separation unit 24 inner steel frame, wherein the separation steel frame is pre-installed with a joint corresponding to the separation inner truss 232; after the corresponding steel frames in the corner units 22 and the separation units 24 are installed, the reserved gaps at the positions of the separation truss bands 23 are encrypted to form temporary supports, the installation operation platform is used for installing the separation inner trusses 232, and the separation inner trusses are installed from the middle to two sides or are installed together in different areas during installation.

Step six, assembling the edge-closing truss 21, the arc-shaped truss 25 and the separating truss belt 23 on site; setting an assembling operation frame, carrying out all-dimensional measurement and correction on the total length, the width, the height and the like of the operation frame, then establishing a control grid for the placing position of the truss rod piece, and then starting assembling; and measuring and paying off the spatial positions of all points of the rod piece, and setting a limiting block for placing the rod piece.

In the sixth step, the web members of the truss are placed, positioned and temporarily fixed, and the overall position relation is measured and adjusted according to the upper chord member, the lower chord member and the point position marks on the web members to be spliced; after the components are adjusted and fixed, detecting by using a steel ruler, a plumb bob and the like according to point position marks and ground projection points on the pieces to be spliced, fixing by using spot welding, recording and storing detection data, comparing and analyzing with a design drawing, and adjusting if the components do not meet the requirements; if the requirements are met, performing a welding process and a subsequent process.

Step seven, during hoisting, firstly, trial hoisting is carried out, the hoisting is stopped when the hoisting height is 100-200 mm, and the firmness of the rigging and the stability of the crane are checked; after the condition that the crane is correct is confirmed, the crane can be instructed to slowly ascend, the center of the truss is aligned with the center of the installation position, then the hook is slowly ascended, the stable mooring ropes in four directions are manually tensioned in the hoisting process, and the truss is prevented from laterally shaking.

When the truss is hoisted, binding points are padded in the steel wire rope by using soft materials, and the height difference of the left support and the right support of the truss is adjusted when the steel wire rope is bound, so that the steel wire rope can be stably positioned in place in the hoisting process; binding stable cables at two ends of the truss respectively; welding temporary reinforcing and positioning measures before hoisting; after the truss is installed, the truss is reinforced and fixed through the cable rope, and after the truss is hoisted in place, the truss needs to be reinforced with the steel beam and the splicing part through the frame butt-joint fixing plate 5.

The perpendicularity of the steel beam is checked by a theodolite or a total station, the truss can be welded after being corrected to be qualified, and the truss needs to be welded after being temporarily fixed, and the section bar is a round tube and needs to be welded by arranging a round angle suspension cage.

Step eight, hoisting the truss to the position above the cylindrical surface, rotating the truss by using a stable cable to align the truss to the splicing position so as to accurately position the truss, slowly positioning the truss, and accurately positioning the side truss and the secondary truss at the elevation relative to the roof truss beam; thereby completing the installation of the dome structure 2.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that may be made by those skilled in the art within the technical scope of the present invention will be covered by the scope of the present invention.

Claims (10)

1. A dome structure mounting and connecting structure is characterized in that a steel frame dome structure (2) is wavy in the horizontal direction and the vertical direction, the length direction of one side is lower than that of the other side, a vertical projection comprises a sharp corner part on one side and a trapezoidal part on the other side, and the periphery of the trapezoidal part is an arc-shaped edge;

the steel frame dome structure (2) comprises an edge-folding truss (21), corner units (22) connected to one inner side of the edge-folding truss (21), separating truss belts (23) connected to the edge-folding truss (21) in the longitudinal direction and arranged at intervals, separating units (24) connected between the separating truss belts (23) and arc-shaped trusses (25) connected to the middle part of the edge-folding truss (21) in the longitudinal direction;

the edge-closing truss (21) is arranged at the periphery of the steel frame dome structure (2), the edge-closing truss (21) is wavy in the horizontal direction and the vertical direction, the length direction of one side is lower than that of the other side, the edge-closing truss (21) comprises a sharp corner part and an arc-shaped trapezoidal part, and the whole edge-closing truss is in a sharp head knife outer frame shape; the edge-receiving truss (21) comprises an edge main truss (211), an edge additional steel frame (212) and an edge additional truss (213) which are connected to one side of a sharp corner of the edge main truss (211), edge top columns (214) which are connected to the joints of truss rod pieces and the steel frames, corner connecting frames (215) and edge top connecting frames (216) which are connected to the two edge main trusses (211) at the corner connecting corner of the sharp corner of the edge main truss (211), corner trusses (217) which are connected between the edge top connecting frames (216) and the corner connecting frames (215), and edge secondary connecting trusses (218) which are arranged on the opposite sides of the sharp corner;

the side main truss (211) comprises a vertical and vertically arc-shaped side main frame body (2111) and side main frame rib plates (2112) connected to the side main frame body (2111), the side main frame body (2111) is made of I-steel, the side main truss (211) comprises a sharp corner part and an arc-shaped trapezoidal part, a notch is formed in one side of the sharp corner part, the notch is connected with an additional steel frame (212) in a staggered manner, and a side top column (214) and a support steel column (1) connected below the side top column (214) are connected in the staggered manner; the side of the arc-shaped trapezoidal part of the side main truss (211) opposite to the sharp corner is formed by splicing and connecting truss rod pieces;

the side top column (214) comprises a side top column body (2141) and a side top column butt joint rod (2142), and the height of the side top column body (2141) is not less than the heights of the side main truss (211), the side additional steel frame (212) and the side additional truss (213); the side prop butt joint rod (2142) comprises two rod pieces and a steel plate which are arranged in an I shape, and also comprises two rod pieces which are parallel up and down and are correspondingly connected with the side main truss (211) or the side additional truss (213);

the separation units (24) are arranged among the separation truss belts (23), the separation units (24) are separation steel frames (231) connected in a net shape, the separation steel frames (231) are connected in a cross shape, and the cross-shaped connection position comprises vertical staggered connection and flush connection;

the corner unit (22) is in an arc-shaped frame-shaped triangle and comprises a corner steel connecting frame (221), a corner mark top connecting column (222) connected below the cross corner steel connecting frame (221) and a corner side top column (223) connected to the top of the sharp corner of the corner steel connecting frame (221);

the angle connecting steel frame (221) comprises an angle connecting main frame (2211) which is vertical and vertically arc-shaped and an angle connecting frame rib plate (2212) connected to the angle connecting main frame (2211), and the angle connecting main frame (2211) is made of I-shaped steel; the corner edge top column (223) is fixedly connected with the edge-closing truss (21) through a steel frame;

the separating truss belt (23) is arranged at the trapezoid part of the edge-closing truss (21) at intervals in the longitudinal direction and comprises two parallel separating steel frames (231), separating inner trusses (232) connected between the separating steel frames (231) and separating top connecting columns (233) arranged below the separating trusses at intervals.

2. A dome structure mounting connection structure as claimed in claim 1, wherein the dividing inner truss (232) is arranged in an X-shape, the dividing inner truss (232) being connected to the dividing steel frame (231) at a vertically upper portion thereof.

3. A dome structure mounting and connecting structure as claimed in claim 1, wherein said arc truss (25) comprises two parallel arc steel frames (251) in semi-circles, an arc main truss (253) connected between the two arc steel frames (251), arc frame connecting columns (252) arranged at the connection of the arc steel frames (251) and the separating steel frames (231) of the separating unit (24), and arc frame butt-joint rods (254) connected to the arc frame connecting columns (252) between the arc steel frames (251) and the separating steel frames (231);

the arc frame butt joint rod (254) comprises two rod pieces and a steel plate which are arranged in an I shape, and further comprises two rod pieces which are parallel up and down and are correspondingly connected with an arc main truss (253), wherein the arc main truss (253) is horizontally arranged in a multi-stage W shape and is vertically connected in a single-point shape;

the arc frame connecting columns (252) are connected through a steel frame; still the interval connection has directly to link the truss in the semicircle arc within range, directly links the truss and arranges and arrange and at the short distance interval along separating unit (24) length, directly link the truss and be multistage W form setting to the tie, be "individual" font connection in vertical.

4. A dome structure mounting and connecting structure, as claimed in claim 1, wherein said corner mark top column (222) comprises a corner mark top main column (2221) and a corner mark top main column connecting end (2222), said corner mark top main column (2221) has a height not less than the height of the corner connecting frame (2211), and the corner mark top main column connecting end (2222) is detachably and fixedly connected around the corner mark top main column (2221) corresponding to the corner connecting frame (2211); the main column connecting end (2222) at the top of the corner mark is I-shaped.

5. A method of erecting a dome structure according to any one of claims 1 to 4 wherein the dome structure (2) comprises a truss frame (21) having a side frame, corner members (22) connected to an inner side of the side frame (21), spaced-apart truss strips (23) connected to the side frame (21) at an upper longitudinal direction, spacer members (24) connected between the truss strips (23), and an arc-shaped truss frame (25) connected to a central longitudinal direction of the side frame (21); supporting steel columns (1) are connected below the dome structure (2) at intervals;

the dome structure (2) is wavy in the horizontal direction and the vertical direction, the length direction of one side is lower than that of the other side, the vertical projection comprises a sharp corner part on one side and a trapezoidal part on the other side, and the periphery of the trapezoidal part is an arc-shaped edge;

the construction method for hoisting the dome structure (2) comprises the following specific steps:

step one, height division is carried out on a support steel column (1) according to the wave shape of a dome structure (2), and an embedded column base is arranged at the column bottom of the support steel column (1) and is supported by an angle steel support; the supporting steel column (1) is arranged from the middle to two ends

Step two, the installation of the angle steel bracket is required to be carried out in an intervening construction mode when the concrete strength of the pile foundation reaches more than 80%, and the installation sequence is carried out in sequence according to civil engineering subareas; after the civil pile foundation construction is finished, providing a working surface and completing the installation of the angle steel bracket, sequentially and alternately installing first sections of steel columns, and constructing the supporting steel columns (1) to a position 1.20 meters above the elevation of the top of the bearing platform; the basement support steel column (1) is installed and hoisted by adopting a near tower crane;

step three, fixedly connecting the assembled supporting steel columns (1) in the same vertical direction, connecting the supporting steel columns through C-shaped steel plates during butt joint, and performing auxiliary construction through temporary supporting pieces when the upper section supporting steel columns (1) are connected; the supporting steel column (1) is arranged corresponding to the center column body of the dome structure (2) and is connected through a temporary fixing plate or a fixing frame; the supporting steel column (1) is arranged in unequal lengths according to the layer height and the lower structure of the dome structure (2), and the top of the supporting steel column (1) can be detachably connected with a positioning plate;

fourthly, when the supporting steel column (1) is constructed to the dome structure (2), deepening the steel frame dome structure (2) through CAD and three-dimensional software, and dividing the steel frame dome structure (2) into two parts, namely a pure steel frame and a truss, for targeted installation construction;

fifthly, after corresponding steel frames in the corner units (22) and the separating units (24) are installed, temporarily fixing the steel frames, and particularly, carrying out encryption temporary support on reserved gaps at the positions of the separating truss belts (23) and the arc-shaped trusses (25); fixing the steel frame at the segmented hoisting position through a temporary fixing splint until the subsequent integral steel frame is completely installed, and then welding rigid connection nodes at the steel frame splicing position through full penetration; rechecking the position and the line type of the steel frame;

step six, carrying out on-site assembly on the edge-closing truss (21), the arc-shaped truss (25) and the separating truss belt (23); setting an assembling operation frame, carrying out all-dimensional measurement and correction on the total length, the width and the height of the operation frame, then establishing a control grid for the placing position of the truss rod piece, and then starting assembling; measuring and paying off the spatial positions of all points of the rod piece, and arranging a limiting block for placing the rod piece;

step seven, during hoisting, firstly, trial hoisting is carried out, the hoisting is stopped when the hoisting height is 100-200 mm, and the firmness of the rigging and the stability of the crane are checked; after the confirmation of no error, the crane can be instructed to slowly ascend to enable the center of the truss to be aligned with the center of the installation position, then the hook is slowly ascended, and the stable mooring ropes in four directions are manually tensioned in the hoisting process to prevent the truss from laterally shaking;

step eight, hoisting the truss to the position above the cylindrical surface, rotating the truss by using a stable cable to align the truss to the splicing position so as to accurately position the truss, slowly positioning the truss, and accurately positioning the side truss and the secondary truss at the elevation relative to the roof truss beam; thereby completing the installation of the dome structure (2).

6. The construction method of a dome structure erection joint structure of claim 5, characterized by that, the hoisting point is located on the top connection ear plate of the support steel column (1), when hoisting the post, the rotation is carried out while lifting the hook to make the post upright, the bottom plate of the post is kept 40 cm-60 cm away from the ground, the crane arm is slowly rotated and falls over the angle iron bracket;

after the first section of supporting steel column (1) circles round in place, the central lines of the two sides are matched with the marked central line of the angle steel bracket, the four sides are considered, the angle steel bracket anchor bolts are aligned and penetrate into anchor bolt holes at the column bottom, and wind-holding ropes are adopted for reinforcement to prevent toppling; correcting the first section of column, measuring the elevation, displacement and vertical deviation of the first section of column for primary correction, then screwing down the anchor bolt nut, then performing secondary correction, and then welding with the angle steel bracket.

7. A method for lifting and constructing a mounting and connecting structure of a dome structure according to claim 5, wherein for the fourth step, the edge-closing trusses (21), the corner units (22), the separating truss belts (23), the separating units (24) and the arc trusses (25) are synchronously constructed by dividing the areas; and firstly constructing a pure steel frame part and a truss part in the same area.

8. The hoisting construction method for the installation and connection structure of the dome structure according to claim 5, wherein in the sixth step, the web members of the truss are placed, positioned and temporarily fixed, and the overall position relationship is measured and adjusted according to the point position marks on the upper chord member, the lower chord member and the members to be spliced of the web members; after the components are adjusted and fixed, detecting by using a steel ruler or a plumb bob according to point position marks and ground projection points on the pieces to be spliced, fixing by using spot welding, recording and storing detection data, comparing and analyzing with a design drawing, and adjusting if the components do not meet the requirements; if the requirements are met, performing a welding process and a subsequent process.

9. The method for constructing a ceiling structure installation and connection structure according to claim 8, wherein the separation top connection column (233) and the separation steel frame (231) in the separation truss band are installed together with the angle connection steel frame (221) and the steel frame in the separation unit (24), wherein the separation steel frame is pre-installed with a joint corresponding to the separation inner truss (232); after the corresponding steel frames in the corner units (22) and the separation units (24) are installed, the reserved gaps at the positions of the separation truss belts (23) are encrypted to form temporary supports, the installation operation platform is used for installing the separation inner trusses (232), and the separation inner trusses are installed from the middle to two sides or are installed together in different areas during installation.

10. The hoisting construction method of a dome structure installation and connection structure of claim 5, wherein when hoisting the truss, the binding points are padded in the truss by soft materials, and the height difference of the left and right supports of the truss is adjusted when the steel wire ropes are bound, so that the truss can be stably positioned in the hoisting process; binding stable cables at two ends of the truss respectively; welding temporary reinforcing and positioning measures before hoisting;

after the truss is installed, the truss is reinforced and fixed by using a cable rope, and after the truss is hoisted in place, the truss needs to be reinforced with the steel beam and the splicing part through a frame butt-joint fixing plate (5);

the perpendicularity of the steel beam is checked by a theodolite or a total station, the truss can be welded after being corrected to be qualified, and the truss needs to be welded after being temporarily fixed, and the section bar is a round tube and needs to be welded by arranging a round angle suspension cage.

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