CN114875805A - Air rapid intersection and butt joint construction method for large special-shaped steel components - Google Patents
Air rapid intersection and butt joint construction method for large special-shaped steel components Download PDFInfo
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- CN114875805A CN114875805A CN202210674291.7A CN202210674291A CN114875805A CN 114875805 A CN114875805 A CN 114875805A CN 202210674291 A CN202210674291 A CN 202210674291A CN 114875805 A CN114875805 A CN 114875805A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
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Abstract
The invention provides a construction method for quickly intersecting and butting large-sized special-shaped steel members in the air, which comprises the following steps: s1, marking a central axis by the steel arch box; s2, mounting a support on the bridge deck; s3, welding a cross connecting piece on the steel arch box; s4, mounting a sand box at the top of the bracket; s5, hoisting a steel arch box; assembling the cross connecting piece on the steel arch box and the sand box on the bracket through a crane; s6, fine adjustment of the steel arch box; and (4) finely adjusting in the plane direction by using a pulling and fixing leveling tool and a jack, and finely adjusting in the vertical direction by using an inclined plane leveling mechanism. The invention solves the technical problem of aerial accurate positioning of large steel members, and achieves the purposes of short aerial intersection and butt joint time, less personnel and equipment investment, reduction of high-altitude operation difficulty, improvement of linear control requirements in the construction process and guarantee of welding construction quality.
Description
Technical Field
The invention belongs to the field of building construction, and particularly relates to a construction method for quickly intersecting and butting large special-shaped steel members in the air.
Background
When the special-shaped steel structure is subjected to air butt joint, due to the fact that the self weight of the component is large, the air operation space is limited, and the steel component is prone to have factors such as denaturation in the butt joint process, the construction process is long in duration, the central axis control difficulty is large, the reserved size of a welding seam is not uniform, the welding quality is difficult to guarantee, and the component is prone to deformation in different degrees when clamped and fixed; at present, large steel members are butted in the air and are mainly hoisted by matching a crawler crane and a truck crane. Marking a central axis in the arch section box body, and marking the central axis of the bracket on the distribution beam by using a total station to control positioning. Two limiting plates are welded at the interface of an adjacent component, the component is finely adjusted by a jack after being basically matched, the steel component is easily deformed in different degrees in the construction process, accurate butt joint is guaranteed due to the fact that the three-dimensional direction needs to be adjusted simultaneously in the butt joint process, the welding limiting device is adjusted in other directions by adjusting one direction in the prior art, final folding is achieved through repeated operation, the butt joint time of the traditional construction process is difficult to determine, the high-altitude operation amount is large, the investment of personnel and equipment is large, and the construction quality is difficult to guarantee.
Disclosure of Invention
In view of this, the present invention is directed to a pulling and fixing leveling tool, which adjusts two steel arch boxes in a horizontal direction, and specifically fine-adjusts the two steel arch boxes in an X-axis direction.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a construction method for quickly intersecting and butting large special-shaped steel components in the air comprises the following steps:
the pulling and leveling tool comprises a first adjusting buckle, a second adjusting buckle, a first connecting block, a second connecting block and an adjusting bolt, wherein the first adjusting buckle and the second adjusting buckle are of the same U-shaped structure, the first connecting block is arranged between two ends of the first adjusting buckle, and the first connecting block is connected to the first adjusting buckle through a rotating shaft so as to realize the rotation of the first connecting block relative to the first adjusting buckle; a second connecting block is arranged between the two ends of the second adjusting buckle and is connected to the second adjusting buckle through a rotating shaft, so that the second connecting block can rotate relative to the second adjusting buckle; adjusting bolt both ends all are equipped with the screw, and a connecting block and No. two connecting blocks all are equipped with the screw, and then realize that adjusting bolt's both ends get threaded connection with a connecting block and No. two connecting blocks respectively, and the adjusting bolt middle part is equipped with the regulation jack.
Furthermore, the threads at the two ends of the adjusting bolt are reverse threads, and the adjusting bolt is rotated to realize the tightening between the first adjusting buckle and the second adjusting buckle.
Furthermore, when the tension leveling tool is used, the first adjusting buckle of the tension leveling tool is fixedly installed to the first steel arch box, and the second adjusting buckle is fixedly installed to the second steel arch box;
furthermore, after the steel arch box is fixed, an adjusting rod is inserted into an adjusting jack of an adjusting bolt, the adjusting bolt is rotated, the first adjusting buckle and the second adjusting buckle are tightened, and therefore the purpose that two adjacent steel arch boxes are finely adjusted in the X-axis direction is achieved;
further, fine adjustment is carried out in the Y-axis direction, a jack reaction point is welded on the H-shaped steel bearing the steel arch box, then a jack is installed, and fine adjustment of the two steel arches in the Y-axis direction can be achieved through jacking force of the jack;
furthermore, because still need carry out the fine setting of adjacent steel arch case in the Y axial, so when making level the frock and designing drawing firmly, designed a turning block and No. two turning blocks that can rotate, realized drawing firmly through rotating and make level the frock and the agreeing with of two steel arch sides.
The invention aims to provide an inclined plane leveling mechanism which is convenient, rapid and efficient to finely adjust a steel arch box in the Z-axis direction.
Compared with the prior art, the pulling, fixing and leveling tool has the following advantages:
(1) the pulling, fixing and leveling tool is simple in structure and convenient to install, and can improve the convenience of operation and improve the working efficiency.
(2) The pulling and fixing leveling tool can lead the first adjusting buckle and the second adjusting buckle to swing along with the shape through the design of the first rotating block and the second rotating block.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
inclined plane mechanism of making level, including cross connecting piece and sand box, sand box fixed mounting is equipped with the sand outlet to the top of support on one side of the sand box, and the sand outlet is equipped with the piston, and the cross connecting piece cup joints to in the sand box, is equipped with the fine sand in the sand box, emits the fine sand through opening the piston, adjusts the sand level of fine sand in the sand box, and then adjusts the height of cross connecting piece.
Further, the cross connecting piece includes the cross plate and pushes up the support, and cross plate bottom fixed mounting is to the top of pushing up the support, and wherein the cross plate is cross for overlooking, and the top of cross plate agrees with mutually with the inclined plane of steel arch case, through welded fastening installation to steel arch case, pushes up the support and cup joints to the sand box in, realizes the cooperation between steel arch case and the inclined plane mechanism of making level.
Furthermore, the cross plate is designed to be cross-shaped, so that the purpose of strong support is achieved by using less plates, and the cross-shaped structure meets the requirement.
Furthermore, the structure of the cross plate is not limited to a cross shape, but the top surface of the cross plate is matched with the bottom surface of the steel arch box, so that the top surface of the cross plate can be accurately adjusted.
Furthermore, the fine sand can be any sand body with strong fluidity, so that the sand body can be discharged quickly, and the purpose of reducing the height of the steel arch box is achieved.
Compared with the prior art, the inclined plane leveling mechanism has the following advantages:
(1) the inclined plane leveling mechanism can realize the matching between the steel arch box and the bracket through a simple adjusting mode, has a simple structure, is convenient to operate, and has a good leveling effect.
(2) According to the slope leveling mechanism, the cross connecting piece is supported by placing the sand body in the sand box, and the sand amount in the sand box can be simply and quickly controlled by utilizing the fluidity of the sand body, so that the purpose of fine adjustment of the steel arch box in the vertical direction is achieved.
(3) The inclined plane leveling mechanism measures the inclined plane position and elevation of the member in the using process, is customized and processed by a steel mill and is welded on the member before hoisting, so that the overhead operation process is reduced. The device facilitates the slope leveling and provides reference for similar projects.
(4) The inclined plane leveling mechanism is used for adjusting in the vertical direction, the original top elevation can be increased by 2cm during actual paying-off, the elevation of a component is adjusted through a sand box, the vertical precision of the component is improved, the operation process of adjusting the sand box is simple and convenient, the use number of jacks is reduced, and the operation efficiency of a limited space is improved.
The invention aims to provide a construction method for quickly intersecting and butting large special-shaped steel members in the air, which solves the technical problem of accurately positioning the large steel members in the air, and achieves the purposes of short time for intersecting and butting in the air, less personnel and equipment investment, reduction of high-altitude operation difficulty, improvement of linear control requirements in the construction process and guarantee of welding construction quality.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a construction method for quickly intersecting and butting large special-shaped steel components in the air comprises the following steps:
s1, marking a central axis by the steel arch box; marking the central axis of the steel arch box before leaving the factory;
s2, mounting a support on the bridge deck; the support installed on the bridge deck corresponds to the installation position of the steel arch box; marking the central axis of the bracket after the bracket is installed; the bracket is used for supporting the steel arch box and is installed according to a design scheme;
s3, welding a cross connecting piece on the steel arch box; and at least two cross connecting pieces are arranged at the bottom of the steel arch box according to the central axis of the steel arch box.
S4, mounting a sand box at the top of the bracket; and S3, at least two sand boxes are arranged at the top of the support according to the central axis of the support, and the sand boxes correspond to the cross connecting pieces one by one, so that the sand boxes and the cross connecting pieces can be conveniently assembled.
S5, hoisting a steel arch box; assembling the cross connecting piece on the steel arch box and the sand box on the bracket through a crane;
s6, fine adjustment of the steel arch box; use to draw solid frock of making level and jack and finely tune in the plane direction, the mechanism is made level on the perpendicular direction to the rethread inclined plane and finely tunes, weld a couple respectively on two adjacent steel arch casees, will draw No. one regulation of solid frock of making level to detain and two regulation knot are respectively cup jointed two couples, through rotating adjusting bolt, realize drawing solid frock of making level not to fall off on two couples, such mode of articulating, also can let draw solid frock of making level when perpendicular direction fine setting and horizontal direction, can follow the variability, the adaptability of drawing solid frock of making level has been improved.
Compared with the prior art, the air rapid intersection and butt joint construction method for the large special-shaped steel member has the following advantages:
(1) the invention relates to a construction method for quickly intersecting and butting large special-shaped steel components in the air, which quickly and efficiently realizes the butting and fine adjustment of two sections of steel arch boxes in the air by matching a pulling and fixing leveling tool and an inclined plane leveling structure, reduces errors and ensures the engineering quality
(2) The air rapid intersection and butt joint construction method for the large special-shaped steel components reduces air operation processes, reduces construction difficulty, improves construction quality and ensures safety factors.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a side view of a tension-fixing leveling tool according to an embodiment of the invention;
FIG. 2 is a top view of the tension-fixing leveling tool according to the embodiment of the invention;
FIG. 3 is a schematic view of a bevel leveling assembly according to an embodiment of the present invention;
FIG. 4 is a schematic view of a steel arch box of an embodiment of the invention mounted to a support;
FIG. 5 is a schematic view of a steel arch box section according to an embodiment of the invention.
Description of reference numerals:
1. pulling and fixing a leveling tool; 11. a first adjusting buckle; 12. a second adjusting buckle; 13. a first connecting block; 14. a second connecting block; 15. adjusting the bolt; 16. adjusting the jack; 2. an inclined plane leveling mechanism; 21. a cross-shaped connector; 211. a cross plate; 212. jacking; 22. a sand box; 23. a sand outlet; 3. a support; 4. a steel arch box.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings, which are based on the orientations and positional relationships indicated in the drawings, and are used for convenience in describing the present invention and for simplicity in description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A construction method for quickly intersecting and butting large special-shaped steel components in the air uses a tension leveling tool 1 and an inclined plane leveling structure:
the pulling and leveling tool 1 comprises a first adjusting buckle 11, a second adjusting buckle 12, a first connecting block 13, a second connecting block 14 and an adjusting bolt 15, wherein the first adjusting buckle 11 and the second adjusting buckle 12 are identical in structure and are in a U-shaped structure, the first connecting block 13 is arranged between two ends of the first adjusting buckle 11, and the first connecting block 13 is connected to the first adjusting buckle 11 through a rotating shaft so as to realize rotation of the first connecting block 13 relative to the first adjusting buckle 11, as shown in fig. 1 and fig. 2; a second connecting block 14 is arranged between two ends of the second adjusting buckle 12, and the second connecting block 14 is connected to the second adjusting buckle 12 through a rotating shaft, so that the second connecting block 14 rotates relative to the second adjusting buckle 12;
preferably, the tension-fixing leveling tool 1 can enable the first adjusting buckle 11 and the second adjusting buckle 12 to swing along with the model through the design of the first rotating block and the second rotating block; adjusting bolt 15 both ends all are equipped with the screw, and a connecting block 13 and No. two connecting blocks 14 all are equipped with the screw, and then realize that adjusting bolt 15's both ends respectively with a connecting block 13 and No. two connecting blocks 14 get threaded connection, adjusting bolt 15 middle part is equipped with regulation jack 16.
Preferably, the threads at the two ends of the adjusting bolt 15 are reverse threads, the adjusting bolt 15 is rotated to realize the tightening between the first adjusting buckle 11 and the second adjusting buckle 12, the operation is simple, labor-saving and easy, and a good tightening effect is achieved.
Preferably, when in use, the first adjusting buckle 11 of the pulling and fixing leveling tool 1 is fixedly installed on the first steel arch box 4, and the second adjusting buckle 12 is fixedly installed on the second steel arch box 4; the preferred first adjusting buckle 11 can be installed on the side surface of the steel arch box 4, and also can be installed on the bottom surface of the steel arch box 4, is not limited to the installation position, as long as the steel arch boxes 4 of two box sections are connected through the pulling and fixing leveling tool 1, and the two steel arch boxes 4 can be finely adjusted in the plane direction.
Preferably, after the steel arch box is fixed, an adjusting rod is inserted into an adjusting jack 16 of an adjusting bolt 15, the adjusting bolt 15 is rotated, the first adjusting buckle 11 and the second adjusting buckle 12 are tightened, and therefore the two adjacent steel arch boxes 4 are finely adjusted in the X-axis direction;
preferably, fine adjustment is carried out in the Y-axis direction, a jack reaction point is welded on the H-shaped steel bearing the steel arch box 4, then a jack is installed, and fine adjustment of the two steel arches in the Y-axis direction can be realized through jacking force of the jack; the Y-axis direction can also be finely adjusted by a pulling and fixing leveling tool.
Preferably, because still need carry out adjacent steel arch case 4's fine setting in the Y axial, so when making level frock 1 and designing drawing firmly, designed a turning block and No. two turning blocks that can rotate, realized drawing firmly through rotating and make level frock 1 and two agreeing with of steel arch side.
The pulling, fixing and leveling tool 1 is simple in structure and convenient to install, and can improve the convenience of operation and improve the working efficiency.
The inclined plane leveling mechanism 2, as shown in fig. 3 and 4, comprises a cross connecting piece 21 and a sand box 22, wherein the sand box 22 is fixedly installed at the top of the support 3, a sand outlet 23 is formed in one side of the sand box 22, a piston is arranged at the sand outlet 23, the cross connecting piece 21 is sleeved in the sand box, fine sand is arranged in the sand box 22, the fine sand is discharged by opening the piston, the sand position of the fine sand in the sand box 22 is adjusted, the height of the cross connecting piece 21 is further adjusted, the matching between the steel arch box 4 and the support 3 can be realized through a simple adjusting mode, the structure is simple, the operation is convenient, and the leveling effect is good.
Preferably, the cross-shaped connecting piece 21 comprises a cross plate 211 and a jacking bracket 212, the bottom of the cross plate 211 is fixedly installed at the top of the jacking bracket 212, the cross plate 211 is cross-shaped when viewed from top, the top of the cross plate 211 is matched with the inclined plane of the steel arch box 4 and is fixedly installed on the steel arch box 4 through welding, and the jacking bracket 212 is sleeved in the sand box 22 to realize the matching between the steel arch box 4 and the inclined plane leveling mechanism 2.
Preferably, the cross plate 211 is designed to be cross-shaped, so as to use less plate material for strong support, and the cross-shaped structure meets the requirement.
Preferably, the cross plate 211 is not limited to a cross shape, but the top surface of the cross plate 211 is precisely adjusted to fit the bottom surface of the steel arch box 4.
Preferably, the fine sand can be any sand body with strong fluidity, so that the sand body can be discharged quickly, and the purpose of reducing the height of the steel arch box 4 is further achieved.
Preferably, the cross connecting piece 21 is supported by placing sand in the sand box 22, and the sand amount in the sand box 22 can be simply and quickly controlled by utilizing the fluidity of the sand, so that the purpose of fine adjustment of the steel arch box 4 in the vertical direction is achieved.
Preferably, the position and the elevation of the inclined plane of the component are measured in the using process, the component is machined in a customized mode in a steel mill and welded on the component before hoisting, and the overhead operation process is reduced. The device facilitates the slope leveling and provides reference for similar projects.
Preferably, the inclined plane leveling mechanism 2 is used for adjusting in the vertical direction, the original top elevation can be increased by 2cm in actual line laying, the elevation of the component is adjusted through the sand box 22 to improve the vertical precision of the component, meanwhile, the operation process of adjusting the sand box 22 is simple and convenient, the using number of jacks is reduced, and the operation efficiency of a limited space is improved.
The invention aims to provide a construction method for quickly intersecting and butting large special-shaped steel members in the air, which solves the technical problem of accurately positioning the large steel members in the air, and achieves the purposes of short time for intersecting and butting in the air, less personnel and equipment investment, reduction of high-altitude operation difficulty, improvement of linear control requirements in the construction process and guarantee of welding construction quality.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a construction method for quickly intersecting and butting large-sized special-shaped steel members in the air is shown in figure 5, wherein ports of a top plate, a web plate and a bottom plate are staggered at joint positions of segments of a steel arch, and the whole steel arch is Z-shaped. When the steel arch is installed, the steel arch is firstly hoisted to a corresponding position by a crane, and then local position fine adjustment is carried out. During fine adjustment, firstly adjusting the plane position, welding a stress point near a steel arch bottom plate interface during bridge direction adjustment, and adjusting by using a 'pulling and fixing leveling tool 1' of a displacement device; and (4) adjusting the transverse bridge direction, welding a jack support point steel plate on the bracket 3, and adjusting by using a jack matched with a chain block. When the vertical position is adjusted, the cross-shaped inclined plane leveling member is matched with the sand box 22 for adjustment. In construction, because other factors influence the adjustment of the horizontal direction, a tetrafluoro sliding plate is additionally arranged above the H-shaped steel, so that the friction force is reduced, and the adjustment of the steel beam in the horizontal direction is facilitated.
S1, marking a central axis of the steel arch box 4; marking the central axis of the steel arch box 4 before leaving the factory;
s2, a bridge deck mounting bracket 3; the support 3 for installing the bridge deck corresponds to the installation position of the steel arch box 4; marking the central axis of the bracket 3 after the bracket 3 is installed; the bracket 3 is used for supporting the steel arch box 4, and the bracket 3 is installed according to a design scheme;
s3, welding the cross connecting piece 21 on the steel arch box 4; and cross connecting pieces 21 are arranged at the bottom of the steel arch box 4 according to the central axis of the steel arch box 4, and the number of the cross connecting pieces 21 is at least two.
S4, mounting the sand box 22 on the top of the bracket 3; at least two sand boxes 22 are arranged on the top of the support 3 according to the central axis of the support 3 in the step S3, and the sand boxes 22 correspond to the cross connecting pieces 21 one by one, so that the sand boxes 22 and the cross connecting pieces 21 can be assembled conveniently.
S5, hoisting the steel arch box 4; assembling the cross connecting piece 21 on the steel arch box 4 and the sand box 22 on the bracket 3 through a crane;
s6, fine adjustment of the steel arch box 4; the pulling and fixing leveling tool 1 and a jack are used for fine adjustment in the plane direction, and then fine adjustment is carried out in the vertical direction through the inclined plane leveling mechanism 2,
adjustment of the front and rear positions (along the bridge direction); adjusting the position of the rear point: welding two stress points on webs on two sides in a box chamber of the installed steel beam and the steel beam to be adjusted in position, then installing a 10t pulling and fixing leveling tool 1 between the two stress points, and adjusting the rear point position of the steel beam by adjusting an adjusting bolt 15 on the pulling and fixing leveling tool 1;
adjusting the position of a front point: two stress points are respectively welded on a bottom plate on the inner surface of a box chamber of the steel beam at the position to be adjusted and the H-shaped steel, and a 10t pulling and fixing leveling tool 1 is also arranged between the stress points to complete the adjustment of the position of the front point.
Weld a couple respectively on two adjacent steel arch casees 4, will draw firm frock 1 of making level one adjust to detain 11 and No. two adjust to detain 12 and cup joint two couples respectively, through rotating adjusting bolt 15, realize drawing firm frock 1 of making level not fall off on two couples, such mode of articulating also can let draw firm frock 1 of making level when vertical direction fine setting and horizontal direction, can follow the change nature, improved the adaptability of drawing firm frock 1 of making level.
Adjustment of left and right positions (lateral direction); and welding a jack reaction point on the H-shaped steel for bearing the steel beam section, then installing a 20t jack, and completing the adjustment of the left and right positions of the steel beam through the jacking force of the jack.
After the steel beam is adjusted in the horizontal direction in sections, adjusting in the vertical direction is carried out, the adjustment is carried out through 2 sand boxes or adjusting round pipes, a piston is arranged below the sand box 22, the inside of the piston is filled with dry river sand, and the steel box beam is positioned and then the design elevation is obtained by discharging the river sand in the sand box 22 outwards; the function of the adjusting pipe is the same as that of the sand box 22, and the adjusting pipe has the advantages that the material is convenient to obtain, and the defect is that the elevation is adjusted to be matched with a jack for fine adjustment; the side box support of the variable cross-section steel box girder support 3 adopts steel pipes to perform height adjustment, so that the height of the sandbox is ensured:
the jack is to be placed directly over support 3, and the jack can not direct contact beam slab, will place 1 20x20x2cm steel plate piece on the hydraulic stem, will carry out precision measurement during the adjustment, adds steel gasket and steel wedge after reaching the requirement, requires all to set up the gasket in every web department.
Because the steel encircles the angle great, conveniently consolidate after taking one's place for improving the installation accuracy, guarantee whole quality and safety, at the steel arch before dispatching from the factory both ends welding measure of making level, the ware of making level corresponds the control tube position, chooses the cross for use, and bottom plate 500mm, thickness are 20, if overlap with decorative plate rib position, need cut off when the mill preparation and spot welding on the annex bottom plate, wait that support 3 demolishs and accomplish the back and install. After the position of the steel beam is adjusted, limiting plates are welded on the platforms at two sides and two ends of the beam body to fix the beam body.
By matching the tension and fixation leveling tool 1 and the inclined plane leveling structure, the butt joint and fine adjustment of the two sections of steel arch boxes 4 in the air can be quickly and efficiently realized, the error is reduced, and the engineering quality is ensured; the aerial operation process is reduced, the construction difficulty is reduced, the construction quality is improved, and the safety factor is ensured.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A construction method for quickly intersecting and butting large special-shaped steel components in the air comprises the following steps:
s1, marking a central axis by the steel arch box;
s2, mounting a support on the bridge deck;
s3, welding a cross connecting piece on the steel arch box;
s4, mounting a sand box at the top of the bracket;
s5, hoisting a steel arch box; assembling the cross connecting piece on the steel arch box and the sand box on the bracket through a crane;
s6, fine adjustment of the steel arch box; and (4) finely adjusting in the plane direction by using a pulling and fixing leveling tool and a jack, and finely adjusting in the vertical direction by using an inclined plane leveling mechanism.
2. The pulling and fixing leveling tool used in cooperation with the construction method for rapid air intersection and butt joint of large special-shaped steel members according to claim 1 is characterized in that: the adjusting buckle is characterized by comprising a first adjusting buckle, a second adjusting buckle, a first connecting block, a second connecting block and an adjusting bolt, wherein the first adjusting buckle and the second adjusting buckle are of the same U-shaped structure; a second connecting block is arranged between the two ends of the second adjusting buckle and is connected to the second adjusting buckle through a rotating shaft, so that the second connecting block can rotate relative to the second adjusting buckle; adjusting bolt both ends all are equipped with the screw, and a connecting block and No. two connecting blocks all are equipped with the screw, and then realize that adjusting bolt's both ends get threaded connection with a connecting block and No. two connecting blocks respectively, and the adjusting bolt middle part is equipped with the regulation jack.
3. The pulling and fixing leveling tool according to claim 2, characterized in that: the screw thread at adjusting bolt both ends is the left-hand thread, rotates adjusting bolt and realizes that the regulation is detained and is tightened up between the regulation knot No. one and the regulation knot No. two.
4. The slope leveling mechanism used in cooperation with the construction method for rapid air intersection and butt joint of large special-shaped steel members according to claim 1 is characterized in that: including cross connecting piece and sand box, sand box fixed mounting is equipped with the sand outlet to the top of support to sand box one side, and the sand outlet is equipped with the piston, and the cross connecting piece cup joints to the sand box in, is equipped with the fine sand in the sand box, emits the fine sand through opening the piston, adjusts the sand position of fine sand in the sand box, and then adjusts the height of cross connecting piece.
5. The bevel leveling mechanism of claim 4, wherein: the cross connecting piece comprises a cross plate and a jacking support, the bottom of the cross plate is fixedly installed at the top of the jacking support, the cross plate is cross-shaped for overlooking, the top of the cross plate is matched with the inclined plane of the steel arch box, the cross plate is fixedly installed to the steel arch box through welding, the jacking support is sleeved into the sand box, and the steel arch box and the inclined plane leveling mechanism are matched.
6. The aerial rapid intersection and butt joint construction method for the large special-shaped steel members according to claim 1, is characterized in that: the mounting position of a bracket mounted on the bridge deck in the S2 corresponds to that of the steel arch box; and marking the central axis of the bracket after the bracket is installed.
7. The aerial rapid intersection and butt joint construction method for the large special-shaped steel members according to claim 1, is characterized in that: and S3, at least two cross connecting pieces are arranged at the bottom of the steel arch box according to the central axis of the steel arch box.
8. The aerial rapid intersection and butt joint construction method for the large special-shaped steel members according to claim 7 is characterized in that: and S4, at least two sand boxes are arranged at the top of the support according to the central axis of the support, and the sand boxes correspond to the cross connecting pieces one by one.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210674291.7A CN114875805B (en) | 2022-06-15 | 2022-06-15 | Aerial rapid intersection and butt joint construction method for large-scale special-shaped steel members |
| PCT/CN2022/110204 WO2023240766A1 (en) | 2022-06-15 | 2022-08-04 | Overhead rapid joining and butt-joint connection construction method for large special-shaped steel member |
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| CN202210674291.7A CN114875805B (en) | 2022-06-15 | 2022-06-15 | Aerial rapid intersection and butt joint construction method for large-scale special-shaped steel members |
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| CN113914189A (en) * | 2021-04-16 | 2022-01-11 | 重庆祝桥建筑工程有限公司 | Adjustable universal steel arch frame |
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| CN110747747A (en) * | 2019-10-29 | 2020-02-04 | 中铁大桥局第七工程有限公司 | Steel arch section installation adjusting device based on steel arch support, support system and method |
| CN212404665U (en) * | 2020-07-14 | 2021-01-26 | 中铁上海工程局集团有限公司 | Steel track beam mounting mould |
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- 2022-08-04 WO PCT/CN2022/110204 patent/WO2023240766A1/en unknown
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| CN101525865A (en) * | 2008-12-30 | 2009-09-09 | 中铁二局股份有限公司 | Extroversive posture adjusting method for steel box arch rib section |
| CN104652281A (en) * | 2014-12-29 | 2015-05-27 | 中铁二局股份有限公司 | External slanted type steel box arch installing method |
| CN206319256U (en) * | 2016-12-14 | 2017-07-11 | 中国水利水电第十四工程局有限公司 | A kind of Bailey beam support supporting drops sandbox |
| CN206828965U (en) * | 2017-03-27 | 2018-01-02 | 中铁二院工程集团有限责任公司 | Arch bridge Horizontal Swing Construction closes up mouth with double cantilevers and adjusts locked configuration temporarily |
| CN111636306A (en) * | 2020-06-03 | 2020-09-08 | 中铁上海工程局集团有限公司 | Construction method for sectional assembly and integral lifting of large-span steel box arch rib |
| JP3232365U (en) * | 2021-03-29 | 2021-06-10 | 中鉄建大橋工程局集団南方工程有限公司 | Temporary binding and verticality fine adjustment equipment for the pivot buckle tower |
| CN113914189A (en) * | 2021-04-16 | 2022-01-11 | 重庆祝桥建筑工程有限公司 | Adjustable universal steel arch frame |
| CN114250689A (en) * | 2021-12-21 | 2022-03-29 | 中交三公局第三工程有限公司 | Construction method of inclined steel box stacked arch rib of steel arch bridge |
Also Published As
| Publication number | Publication date |
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| WO2023240766A1 (en) | 2023-12-21 |
| CN114875805B (en) | 2024-02-09 |
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