CN108221705B - Double-limb thin-wall pier I-steel support convenient to disassemble and use method - Google Patents
Double-limb thin-wall pier I-steel support convenient to disassemble and use method Download PDFInfo
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- CN108221705B CN108221705B CN201810245124.4A CN201810245124A CN108221705B CN 108221705 B CN108221705 B CN 108221705B CN 201810245124 A CN201810245124 A CN 201810245124A CN 108221705 B CN108221705 B CN 108221705B
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Abstract
The invention discloses a double-limb thin-wall pier I-steel support frame convenient to disassemble, wherein a pre-buried hole transversely penetrating through a pier is formed in a pier, and first I-steel penetrates through the pre-buried hole; the embedded part is arranged on the wall surface of the bridge pier, one end of the diagonal brace is connected with the first I-steel, and the other end of the diagonal brace is connected with the embedded part; the embedded frame is arranged on the inner wall of the embedded hole, and the first I-steel, the second I-steel and the supporting block are sequentially arranged in the embedded frame from top to bottom; the flange of the first I-steel is horizontally arranged, the flange of the second I-steel is vertically arranged, and the supporting block is arranged on the inner bottom surface of the embedded frame; one end of the spring is connected with the bottom surface of the first I-steel lower flange, and the other end of the spring is connected with the inner bottom surface of the embedded frame. The invention also discloses a use method of the double-limb thin-wall pier I-shaped steel support frame. The invention ensures that the first I-steel is taken out more safely and conveniently without cutting off the first I-steel, so that the first I-steel can be reused, and the cost is greatly saved.
Description
Technical Field
The invention relates to the field of bridge engineering, in particular to a double-limb thin-wall pier I-steel support frame convenient to disassemble and a use method thereof.
Background
The double-limb thin-wall pier is a pier form which is relatively common for large-span highway bridges at the present stage, and is structurally characterized in that two mutually parallel pier walls are arranged on the pier position and are hinged or just connected with a girder. The reinforced concrete double-limb thin-wall pier can increase the rigidity of the pier, reduce the peak value of the counter-force of the girder and increase the attractive appearance of the bridge. The prestressed concrete continuous rigid frame bridge adopts a pier-girder consolidation system, the double-thin-wall high pier is an ideal flexible pier, can support an upper structure, keep a pier stable, has certain flexibility, meets the requirement of upper structure displacement, has the thrust resistance stiffness of 1/4 of that of a single-limb thin-wall pier, has small thrust resistance, good longitudinal flexibility function, small constraint condition on mid-span internal force and good stress condition.
When the existing double-limb thin-wall pier is poured, a preformed hole is arranged on the pier, and I-steel is arranged in the preformed hole to serve as a support of an upper support frame when an upper structure is poured. However, when the upper structure pouring is completed, the I-steel in the preformed hole is difficult to dismantle due to steel creep or concrete creep deformation, and the I-steel is directly dismantled along the pier wall surface in the prior art, so that the I-steel cannot be reused, and the cost is extremely high.
Disclosure of Invention
The invention aims to solve the technical problems that the I-steel cannot be reused by directly dismantling the I-steel in a mode of cutting along the wall surface of the pier after the pouring of the upper structure of the existing double-limb thin-wall pier is finished, and the cost is extremely high.
The invention is realized by the following technical scheme:
a double-limb thin-wall pier I-steel support convenient to dismantle comprises a pier, a first I-steel, an inclined strut and an embedded part; the pier is provided with a pre-buried hole which transversely penetrates through the pier, and the first I-steel penetrates through the pre-buried hole; the embedded part is arranged on the wall surface of the pier, one end of the diagonal brace is connected with the first I-steel, and the other end of the diagonal brace is connected with the embedded part; an embedded frame, a second I-steel, a supporting block and a spring are arranged in the embedded hole; the embedded frame is arranged on the inner wall of the embedded hole, and the first I-steel, the second I-steel and the supporting block are sequentially arranged in the embedded frame from top to bottom; the flange of the first I-steel is horizontally arranged, the flange of the second I-steel is vertically arranged, and the supporting block is arranged on the inner bottom surface of the embedded frame; one end of the spring is connected with the bottom surface of the first I-steel lower flange, and the other end of the spring is connected with the inner bottom surface of the embedded frame.
In the prior art, when the upper structure of the double-limb thin-wall pier is poured, the I-steel in the reserved hole is difficult to dismantle due to steel creep or concrete creep deformation, and the I-steel is directly dismantled along the pier wall surface at present, so that the I-steel cannot be reused, and the cost is extremely high.
When the thin-wall pier main rib is constructed, after the thin-wall pier main rib is erected, fixedly connecting the embedded frame and the embedded part to the thin-wall pier main rib and completing pouring; then one end of the diagonal brace is welded to the embedded part, the first I-steel passes through the embedded frame, and the other end of the diagonal brace is welded to the first I-steel; sequentially arranging a second I-steel and a supporting block at the bottom of the first I-steel, welding one end of a spring to the bottom surface of the lower flange of the first I-steel, and welding the other end of the spring to the inner bottom surface of the embedded frame; then, an upper support frame is erected on the upper flange of the first I-steel, and pouring of an upper structure is completed; then, when the strength of the upper structure concrete reaches a threshold value, the upper support frame is dismantled; when the first I-steel is required to be dismantled, an acetylene cutting machine is adopted to cut a web plate of the second I-steel along the longitudinal axis direction of the second I-steel, and the cut second I-steel and the supporting block are taken out from the embedded frame; and then separating the diagonal brace from the first I-steel, cutting off the spring, and taking out the first I-steel from the embedded frame. Because the existence of the diagonal bracing, the force born by the second I-steel and the supporting block only generates force for a small part of the upper structure and the force generated by the self weight of the first I-steel, when the embedded frame is deformed under the action of concrete creep and the like and generates pressure on the first I-steel, a part of the pressure is relieved by the spring, the second I-steel is deformed and presses the supporting block, and when the supporting block adopts a soft structure such as wood, the pressure can be further buffered, and the structural safety is ensured; when the web of the second I-steel is required to be dismantled, the web is cut off, the pressure is completely transferred to the spring, the flange of the second I-steel is separated from the first I-steel along with the cutting of the web, the second I-steel and the supporting block are taken out and released to release the space in the embedded frame, so that the first I-steel cannot be taken out due to deformation of the embedded frame, the first I-steel is taken out safely and conveniently, the first I-steel is not required to be cut off, the first I-steel can be reused, and the cost is greatly saved.
Further, the invention also comprises a wedge block, a template, a supporting frame and an operation platform; the wedge block is fixedly arranged on the upper surface of the first I-steel; the template is fixedly arranged on the inclined plane of the wedge block or/and the upper surface of the first I-steel through the support frame; the operation platform is fixedly arranged on the upper surface of the first I-steel through the support frame.
Further, a groove matched with the flange of the second I-steel is formed in the lower bottom surface of the first I-steel; the groove is internally provided with a roller; the flange of the second I-steel stretches into the groove, and the flange of the second I-steel is contacted with the roller.
When the invention is applied, when the first I-steel is stressed, the wedge-shaped block and the supporting frame act on the surface of the first I-steel, so that the first I-steel not only bears the pressure in the vertical direction, but also needs to bear the uneven deformation of the supporting frame and the horizontal shearing force generated by the wedge-shaped block, the first I-steel is fixed by the inclined struts at two ends, and the middle part is extruded by the embedded frame, strong internal stress is generated, and the deformation generated by the horizontal shearing force can be uniformly distributed on the whole I-steel through the design of the grooves and the rollers, thereby avoiding local stress concentration and improving the safety; meanwhile, in the dismantling process, the second I-steel is difficult to take out due to friction force even if the web plate is cut off, and the roller can effectively relieve the friction force between the first I-steel and the second I-steel, so that the taking out is easier.
Furthermore, the first I-steel is I45b I-steel.
Furthermore, the second I-steel adopts I14I-steel.
Further, the supporting blocks are made of wood materials.
When the invention is applied, the strength of the I45b I-steel is enough to meet the pressure brought by the upper bearing frame, and the price of the I14I-steel is more than 80% lower than that of the I45b I-steel, so that the cost can be more effectively saved by the mode, and the construction cost of a single double-limb thin-wall pier can be saved by more than 10 ten thousand yuan of people's coins.
The application method of the double-limb thin-wall pier I-steel support frame convenient to dismantle comprises the following steps of: s1: after the thin-wall pier main ribs are built, fixedly connecting the embedded frame and the embedded part to the thin-wall pier main ribs and completing pouring; s2: welding one end of the diagonal brace to the embedded part, enabling the first I-steel to pass through the embedded frame, and welding the other end of the diagonal brace to the first I-steel; s3: the bottom of the first I-steel is sequentially provided with a second I-steel and a supporting block, one end of a spring is welded to the bottom surface of the lower flange of the first I-steel, and the other end of the spring is welded to the inner bottom surface of the embedded frame; s4: an upper support frame is erected on the upper flange of the first I-steel, and pouring of an upper structure is completed; s5: when the strength of the upper structure concrete reaches a threshold value, the upper bearing frame is dismantled; s6: cutting a web plate of the second I-steel along the longitudinal axis direction of the second I-steel by adopting an acetylene cutting machine, and taking out the cut second I-steel and the supporting block from the embedded frame; and then separating the diagonal brace from the first I-steel, cutting off the spring, and taking out the first I-steel from the embedded frame.
When the thin-wall pier main rib is constructed, after the thin-wall pier main rib is erected, fixedly connecting the embedded frame and the embedded part to the thin-wall pier main rib and completing pouring; then one end of the diagonal brace is welded to the embedded part, the first I-steel passes through the embedded frame, and the other end of the diagonal brace is welded to the first I-steel; sequentially arranging a second I-steel and a supporting block at the bottom of the first I-steel, welding one end of a spring to the bottom surface of the lower flange of the first I-steel, and welding the other end of the spring to the inner bottom surface of the embedded frame; then, an upper support frame is erected on the upper flange of the first I-steel, and pouring of an upper structure is completed; then, when the strength of the upper structure concrete reaches a threshold value, the upper support frame is dismantled; when the first I-steel is required to be dismantled, an acetylene cutting machine is adopted to cut a web plate of the second I-steel along the longitudinal axis direction of the second I-steel, and the cut second I-steel and the supporting block are taken out from the embedded frame; and then separating the diagonal brace from the first I-steel, cutting off the spring, and taking out the first I-steel from the embedded frame. Because the existence of the diagonal bracing, the force born by the second I-steel and the supporting block only generates force for a small part of the upper structure and the force generated by the self weight of the first I-steel, when the embedded frame is deformed under the action of concrete creep and the like and generates pressure on the first I-steel, a part of the pressure is relieved by the spring, the second I-steel is deformed and presses the supporting block, and when the supporting block adopts a soft structure such as wood, the pressure can be further buffered, and the structural safety is ensured; when the web of the second I-steel is required to be dismantled, the web is cut off, the pressure is completely transferred to the spring, the flange of the second I-steel is separated from the first I-steel along with the cutting of the web, the second I-steel and the supporting block are taken out and released to release the space in the embedded frame, so that the first I-steel cannot be taken out due to deformation of the embedded frame, the first I-steel is taken out safely and conveniently, the first I-steel is not required to be cut off, the first I-steel can be reused, and the cost is greatly saved.
Further, the invention also comprises the following steps: s7: and filling concrete into the embedded frame.
Further, a groove matched with the flange of the second I-steel is formed in the lower bottom surface of the first I-steel; and rollers are arranged in the grooves.
Further, step S3 comprises the sub-steps of: and extending the flange of the second I-steel into the groove, and contacting the flange of the second I-steel with the roller.
When the invention is applied, when the first I-steel is stressed, the wedge-shaped block and the supporting frame act on the surface of the first I-steel, so that the first I-steel not only bears the pressure in the vertical direction, but also needs to bear the uneven deformation of the supporting frame and the horizontal shearing force generated by the wedge-shaped block, the first I-steel is fixed by the inclined struts at two ends, and the middle part is extruded by the embedded frame, strong internal stress is generated, and the deformation generated by the horizontal shearing force can be uniformly distributed on the whole I-steel through the design of the grooves and the rollers, thereby avoiding local stress concentration and improving the safety; meanwhile, in the dismantling process, the second I-steel is difficult to take out due to friction force even if the web plate is cut off, and the roller can effectively relieve the friction force between the first I-steel and the second I-steel, so that the taking out is easier.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the double-limb thin-wall pier I-steel support frame convenient to dismount, the first I-steel is safer and more convenient to take out, the first I-steel does not need to be cut off, the first I-steel can be reused, and the cost is greatly saved;
2. according to the double-limb thin-wall pier I-steel support frame convenient to dismount, deformation generated by horizontal shearing force can be uniformly distributed on the whole I-steel, local stress concentration is avoided, and safety is improved; the roller can effectively relieve the friction force between the first I-steel and the second I-steel, so that the roller is easier to take out;
3. according to the method for using the double-limb thin-wall pier I-steel support frame convenient to disassemble, the first I-steel is safer and more convenient to take out, the first I-steel is not required to be cut off, the first I-steel can be reused, and the cost is greatly saved;
4. according to the use method of the double-limb thin-wall pier I-steel support frame convenient to dismount, deformation generated by horizontal shearing force can be uniformly distributed on the whole I-steel, local stress concentration is avoided, and safety is improved; the roller can effectively relieve friction force between the first I-steel and the second I-steel, so that the taking out is easier.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the roller structure of the present invention.
In the drawings, the reference numerals and corresponding part names:
the bridge pier comprises a bridge pier body, a first I-shaped steel, a 3-diagonal brace, a 4-embedded part, a 5-wedge block, a 6-template, a 7-supporting frame, an 8-operating platform, an 11-embedded frame, a 12-second I-shaped steel, a 13-supporting block and a 14-spring.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
Example 1
As shown in fig. 1 and 2, the double-limb thin-wall pier I-steel support frame convenient to detach comprises a pier 1, a first I-steel 2, an inclined strut 3 and an embedded part 4; the bridge pier 1 is provided with a pre-buried hole which transversely penetrates through the bridge pier, and the first I-steel 2 penetrates through the pre-buried hole; the embedded part 4 is arranged on the wall surface of the bridge pier 1, one end of the diagonal brace 3 is connected with the first I-steel 2, and the other end of the diagonal brace is connected with the embedded part 4; an embedded frame 11, a second I-steel 12, a supporting block 13 and a spring 14 are arranged in the embedded hole; the embedded frame 11 is arranged on the inner wall of the embedded hole, and the first I-steel 2, the second I-steel 12 and the supporting block 13 are sequentially arranged in the embedded frame 11 from top to bottom; the flanges of the first I-steel 2 are horizontally arranged, the flanges of the second I-steel 12 are vertically arranged, and the supporting blocks 13 are arranged on the inner bottom surface of the embedded frame 11; one end of the spring 14 is connected with the bottom surface of the lower flange of the first I-steel 2, and the other end of the spring is connected with the inner bottom surface of the embedded frame 11.
When the embodiment is implemented, when construction is performed, after the erection of the thin-wall pier main rib is completed, fixedly connecting the embedded frame 11 and the embedded part 4 to the thin-wall pier main rib and completing pouring; then one end of the diagonal brace 3 is welded to the embedded part 4, the first I-steel 2 passes through the embedded frame 11, and the other end of the diagonal brace 3 is welded to the first I-steel 2; then, a second I-steel 12 and a supporting block 13 are sequentially arranged at the bottom of the first I-steel 2, one end of a spring 14 is welded to the bottom surface of the lower flange of the first I-steel 2, and the other end is welded to the inner bottom surface of the embedded frame 11; then, an upper support frame is erected on the upper flange of the first I-steel 2, and pouring of an upper structure is completed; then, when the strength of the upper structure concrete reaches a threshold value, the upper support frame is dismantled; when the first I-steel 2 needs to be dismantled, an acetylene cutting machine is adopted to cut the web plate of the second I-steel 12 along the longitudinal axis direction of the second I-steel 12, and the cut second I-steel 12 and the supporting block 13 are taken out from the embedded frame; and then separating the diagonal brace from the first I-steel 2, cutting off the spring, and taking out the first I-steel 2 from the embedded frame. Because the diagonal brace 3 exists, the force born by the second I-steel 12 and the supporting block 13 is only the force generated by a small part of the upper structure and the force generated by the dead weight of the first I-steel 2, when the embedded frame deforms under the action of concrete creep and the like and generates pressure on the first I-steel, a part of the pressure is relieved by the spring 14, the second I-steel 12 deforms and presses the supporting block 13, and when the supporting block 13 adopts a structure with softer texture such as wood, the pressure can be further buffered, and the structural safety is ensured; when the web of the second I-steel 12 is required to be dismantled, the web is cut off, the pressure is transferred to the spring 14 entirely, the flange of the second I-steel 12 is separated from the first I-steel 2 due to the cutting of the web, the second I-steel 12 and the supporting block 13 are taken out to release the space in the embedded frame 11, the first I-steel 2 cannot be taken out due to deformation of the embedded frame, the first I-steel 2 is taken out safely and conveniently, the first I-steel 2 is not required to be cut off, the first I-steel 2 can be reused, and the cost is greatly saved.
Example 2
As shown in fig. 3, this embodiment further includes, on the basis of embodiment 1, an upper carrier including a wedge 5, a die plate 6, a support frame 7, and an operation platform 8; the wedge-shaped block 5 is fixedly arranged on the upper surface of the first I-steel 2; the template 6 is fixedly arranged on the inclined plane of the wedge-shaped block 5 or/and the upper surface of the first I-steel 2 through a supporting frame 7; the operation platform 8 is fixedly arranged on the upper surface of the first I-steel 2 through the support frame 7. The lower bottom surface of the first I-steel 2 is provided with a groove 21 matched with the flange of the second I-steel 12; a roller 22 is arranged in the groove 21; the flange of the second i-beam 12 extends into the groove 21, and the flange of the second i-beam 12 contacts the roller 22.
When the embodiment is implemented, when the first I-steel 2 is stressed, the wedge-shaped block 5 and the supporting frame 7 act on the surface of the first I-steel 2, so that the first I-steel 2 is not only stressed in the vertical direction, but also required to bear uneven deformation from the supporting frame 7 and horizontal shearing force generated by the wedge-shaped block 5, the first I-steel 2 is fixed by the inclined struts 3 at two ends, and strong internal stress is generated when the middle part of the first I-steel 2 is extruded by the embedded frame 11; meanwhile, during the dismantling process, the second I-steel 12 is not easy to take out due to friction force even if the web plate is cut off, and the roller 22 can effectively relieve the friction force between the first I-steel 2 and the second I-steel 12, so that the taking out is easier.
Example 3
In this embodiment, on the basis of embodiment 2, the first I-steel 2 is an I45b I-steel. The second I-steel 12 is I14I-steel. The supporting block 13 is made of wood material.
When the embodiment is implemented, the strength of the I45b I-steel is enough to meet the pressure brought by the upper bearing frame, and the price of the I14I-steel is more than 80% lower than that of the I45b I-steel, so that the cost can be more effectively saved by the mode, and the construction cost of a single double-limb thin-wall pier can be saved by more than 10 ten thousand yuan of people's notes.
Example 4
The invention discloses a use method of a double-limb thin-wall pier I-shaped steel support frame convenient to dismantle, which comprises the following steps: s1: after the thin-wall pier main ribs are built, fixedly connecting the embedded frame 11 and the embedded part 4 to the thin-wall pier main ribs and pouring; s2: one end of the diagonal brace 3 is welded to the embedded part 4, the first I-steel 2 passes through the embedded frame 11, and the other end of the diagonal brace 3 is welded to the first I-steel 2; s3: a second I-steel 12 and a supporting block 13 are sequentially arranged at the bottom of the first I-steel 2, one end of a spring 14 is welded to the bottom surface of the lower flange of the first I-steel 2, and the other end is welded to the inner bottom surface of the embedded frame 11; s4: an upper support frame is erected on the upper flange of the first I-steel 2, and pouring of an upper structure is completed; s5: when the strength of the upper structure concrete reaches a threshold value, the upper bearing frame is dismantled; s6: cutting the web plate of the second I-steel 12 along the longitudinal axis direction of the second I-steel 12 by adopting an acetylene cutting machine, and taking out the cut second I-steel 12 and the supporting block 13 from the embedded frame 11; then the diagonal brace 3 is separated from the first I-steel 2, the spring 14 is cut off, and the first I-steel 2 is taken out from the embedded frame 11.
When the embodiment is implemented, when construction is performed, after the erection of the thin-wall pier main rib is completed, fixedly connecting the embedded frame 11 and the embedded part 4 to the thin-wall pier main rib and completing pouring; then one end of the diagonal brace 3 is welded to the embedded part 4, the first I-steel 2 passes through the embedded frame 11, and the other end of the diagonal brace 3 is welded to the first I-steel 2; then, a second I-steel 12 and a supporting block 13 are sequentially arranged at the bottom of the first I-steel 2, one end of a spring 14 is welded to the bottom surface of the lower flange of the first I-steel 2, and the other end is welded to the inner bottom surface of the embedded frame 11; then, an upper support frame is erected on the upper flange of the first I-steel 2, and pouring of an upper structure is completed; then, when the strength of the upper structure concrete reaches a threshold value, the upper support frame is dismantled; when the first I-steel 2 needs to be dismantled, an acetylene cutting machine is adopted to cut the web plate of the second I-steel 12 along the longitudinal axis direction of the second I-steel 12, and the cut second I-steel 12 and the supporting block 13 are taken out from the embedded frame; and then separating the diagonal brace from the first I-steel 2, cutting off the spring, and taking out the first I-steel 2 from the embedded frame. Because the diagonal brace 3 exists, the force born by the second I-steel 12 and the supporting block 13 is only the force generated by a small part of the upper structure and the force generated by the dead weight of the first I-steel 2, when the embedded frame deforms under the action of concrete creep and the like and generates pressure on the first I-steel, a part of the pressure is relieved by the spring 14, the second I-steel 12 deforms and presses the supporting block 13, and when the supporting block 13 adopts a structure with softer texture such as wood, the pressure can be further buffered, and the structural safety is ensured; when the web of the second I-steel 12 is required to be dismantled, the web is cut off, the pressure is transferred to the spring 14 entirely, the flange of the second I-steel 12 is separated from the first I-steel 2 due to the cutting of the web, the second I-steel 12 and the supporting block 13 are taken out to release the space in the embedded frame 11, the first I-steel 2 cannot be taken out due to deformation of the embedded frame, the first I-steel 2 is taken out safely and conveniently, the first I-steel 2 is not required to be cut off, the first I-steel 2 can be reused, and the cost is greatly saved.
Example 5
The embodiment further comprises the following steps based on embodiment 4: s7: the inside of the pre-buried frame 11 is filled with concrete. The lower bottom surface of the first I-steel 2 is provided with a groove 21 matched with the flange of the second I-steel 12; a roller 22 is arranged in the groove 21. Step S3 comprises the following sub-steps: the flange of the second h-beam 12 is extended into the groove 21 and the flange of the second h-beam 12 is contacted with the roller 22.
When the embodiment is implemented, when the first I-steel 2 is stressed, the wedge-shaped block 5 and the supporting frame 7 act on the surface of the first I-steel 2, so that the first I-steel 2 is not only stressed in the vertical direction, but also required to bear uneven deformation from the supporting frame 7 and horizontal shearing force generated by the wedge-shaped block 5, the first I-steel 2 is fixed by the inclined struts 3 at two ends, and strong internal stress is generated when the middle part of the first I-steel 2 is extruded by the embedded frame 11; meanwhile, during the dismantling process, the second I-steel 12 is not easy to take out due to friction force even if the web plate is cut off, and the roller 22 can effectively relieve the friction force between the first I-steel 2 and the second I-steel 12, so that the taking out is easier.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (9)
1. The double-limb thin-wall pier I-steel support frame is convenient to dismantle and is characterized by comprising a pier (1), a first I-steel (2), an inclined strut (3) and an embedded part (4); the bridge pier (1) is provided with a pre-buried hole which transversely penetrates through the bridge pier, and the first I-steel (2) penetrates through the pre-buried hole; the embedded part (4) is arranged on the wall surface of the bridge pier (1), one end of the diagonal brace (3) is connected with the first I-steel (2), and the other end of the diagonal brace is connected with the embedded part (4); an embedded frame (11), a second I-steel (12), a supporting block (13) and a spring (14) are arranged in the embedded hole; the embedded frame (11) is arranged on the inner wall of the embedded hole, and the first I-steel (2), the second I-steel (12) and the supporting block (13) are sequentially arranged in the embedded frame (11) from top to bottom; the flanges of the first I-steel (2) are horizontally arranged, the flanges of the second I-steel (12) are vertically arranged, and the supporting blocks (13) are arranged on the inner bottom surface of the embedded frame (11); one end of the spring (14) is connected with the bottom surface of the lower flange of the first I-steel (2), and the other end of the spring is connected with the inner bottom surface of the embedded frame (11);
the lower bottom surface of the first I-steel (2) is provided with a groove (21) matched with the flange of the second I-steel (12); a roller (22) is arranged in the groove (21); the flange of the second I-steel (12) stretches into the groove (21), and the flange of the second I-steel (12) is contacted with the roller (22).
2. The double-limb thin-wall pier I-steel support frame convenient to dismantle according to claim 1, further comprising an upper support frame, wherein the upper support frame comprises a wedge block (5), a template (6), a support frame (7) and an operation platform (8); the wedge-shaped block (5) is fixedly arranged on the upper surface of the first I-steel (2); the template (6) is fixedly arranged on the inclined plane of the wedge-shaped block (5) or/and the upper surface of the first I-shaped steel (2) through a supporting frame (7); the operation platform (8) is fixedly arranged on the upper surface of the first I-steel (2) through the support frame (7).
3. The double-limb thin-wall pier I-steel support frame convenient to dismantle according to claim 1, wherein the first I-steel (2) is I45b I-steel.
4. The easy-to-remove double-limb thin-wall pier I-steel carrier of claim 1, wherein said second I-steel (12) is I14I-steel.
5. The double-limb thin-wall pier I-steel support frame convenient to dismantle according to claim 1, wherein the supporting blocks (13) are made of wood materials.
6. A method of using the double-limb thin-wall pier i-steel carrier of any one of claims 1 to 5, comprising the steps of:
s1: after the thin-wall pier main ribs are built, fixedly connecting the embedded frame (11) and the embedded part (4) to the thin-wall pier main ribs and completing pouring;
s2: one end of the diagonal brace (3) is welded to the embedded part (4), the first I-steel (2) passes through the embedded frame (11) and the other end of the diagonal brace (3) is welded to the first I-steel (2);
s3: a second I-steel (12) and a supporting block (13) are sequentially arranged at the bottom of the first I-steel (2), one end of a spring (14) is welded to the bottom surface of the lower flange of the first I-steel (2), and the other end of the spring is welded to the inner bottom surface of the embedded frame (11);
s4: an upper support frame is erected on the upper flange of the first I-steel (2), and pouring of an upper structure is completed;
s5: when the strength of the upper structure concrete reaches a threshold value, the upper bearing frame is dismantled;
s6: cutting a web plate of the second I-steel (12) along the longitudinal axis direction of the second I-steel (12) by adopting an acetylene cutting machine, and taking out the cut second I-steel (12) and the supporting block (13) from the embedded frame (11); and then separating the diagonal brace (3) from the first I-steel (2), cutting off the spring (14), and taking out the first I-steel (2) from the embedded frame (11).
7. The method of using a double-limb thin-wall pier i-steel carrier for easy removal according to claim 6, further comprising the steps of:
s7: and filling concrete into the embedded frame (11).
8. The method for using the double-limb thin-wall pier I-steel support frame convenient to disassemble according to claim 6, wherein the lower bottom surface of the first I-steel (2) is provided with a groove (21) matched with the flange of the second I-steel (12); and a roller (22) is arranged in the groove (21).
9. The method for using the double-limb thin-wall pier I-steel carrier convenient to disassemble according to claim 8, wherein the step S3 comprises the following substeps:
the flange of the second I-steel (12) extends into the groove (21), and the flange of the second I-steel (12) is contacted with the roller (22).
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| CN201810245124.4A CN108221705B (en) | 2018-03-23 | 2018-03-23 | Double-limb thin-wall pier I-steel support convenient to disassemble and use method |
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| CN111027157B (en) * | 2019-12-20 | 2021-11-02 | 江南大学 | Design method of flexible support system of double-limb combined cross-section bending column of dust remover box body |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09287302A (en) * | 1996-04-23 | 1997-11-04 | Saeki Kensetsu Kogyo Kk | Sacked sand shoe and method for assembling and demolishing construction of timbering using sand shoe thereof |
| CN206784915U (en) * | 2017-04-20 | 2017-12-22 | 南京交通职业技术学院 | A kind of new steel structure suspension type flooring gang form |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3940211B2 (en) * | 1997-12-22 | 2007-07-04 | 前田建設工業株式会社 | Construction method of horizontal beams for concrete main tower. |
| CN202830785U (en) * | 2012-09-02 | 2013-03-27 | 中铁十二局集团第二工程有限公司 | High pier bridge cantilever casting concrete 0 # block pier top bracket |
| CN203603446U (en) * | 2013-12-12 | 2014-05-21 | 中建海峡建设发展有限公司 | Clamping-groove-type fixing device for H-section steel of cantilever |
| CN203923913U (en) * | 2014-05-19 | 2014-11-05 | 东风设计研究院有限公司 | The load formula carrier structure of Bridge High-pier bent cap |
| CN204311723U (en) * | 2014-11-18 | 2015-05-06 | 中国建筑第四工程局有限公司 | A kind of Cantilever Beams fastening devices for building |
| CN204456821U (en) * | 2015-02-12 | 2015-07-08 | 河南天工建设集团有限公司 | One can have enough to meet the need suspension scaffold pre-embedded bolt device |
| CN204875531U (en) * | 2015-07-08 | 2015-12-16 | 正平路桥建设股份有限公司 | Shaped steel runs through formula outer supporting bracket system of encorbelmenting |
| CN205046847U (en) * | 2015-10-16 | 2016-02-24 | 中建四局第一建筑工程有限公司 | Pre -buried fixing device of layer I -steel encorbelments |
| CN205894646U (en) * | 2016-07-29 | 2017-01-18 | 江苏省苏中建设集团股份有限公司 | Quick detachable pre -buried device of scaffold frame of encorbelmenting |
| CN106223598A (en) * | 2016-08-03 | 2016-12-14 | 中国十七冶集团有限公司 | A kind of superimposed sheet builder's jack I-steel can have enough to meet the need built-in fitting |
| CN106906996B (en) * | 2017-04-25 | 2019-04-09 | 中国五冶集团有限公司 | Reusable pre-buried ring |
| CN207974021U (en) * | 2018-03-23 | 2018-10-16 | 中国五冶集团有限公司 | A kind of twin legged thin wall pier I-steel bolster convenient for removing |
-
2018
- 2018-03-23 CN CN201810245124.4A patent/CN108221705B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09287302A (en) * | 1996-04-23 | 1997-11-04 | Saeki Kensetsu Kogyo Kk | Sacked sand shoe and method for assembling and demolishing construction of timbering using sand shoe thereof |
| CN206784915U (en) * | 2017-04-20 | 2017-12-22 | 南京交通职业技术学院 | A kind of new steel structure suspension type flooring gang form |
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