Construction support for a double-column cantilever cap beam under deep silt conditions

Abstract

This invention discloses a construction support system for a double-column cantilever cap beam under deep silt layer conditions. It includes a left-side assembly truss and a right-side assembly truss respectively mounted on two side piers. Both the left and right assembly trusses have diagonal support trusses at their upper ends and are connected by assemblies. A central support truss is located near the assemblies at the upper end of both the left and right assembly trusses. Upper support seats are located at the lower ends of both the left and right assembly trusses, and lower support seats are located at the upper ends of the piers. A quick-release drop mechanism is provided between the upper and lower support seats. An adjustment device is installed on the pier, and a support connecting rod connected to the adjustment device is mounted on the quick-release drop mechanism. This solution is suitable for areas with soft foundations and limited underground construction space, effectively reducing the number of landing points, the foundation surface area, and the encroachment on site area, allowing for better utilization of site space.

Description

Technical Field

[0001] This invention relates to the field of civil engineering technology, specifically to a construction support for a double-column cantilever cap beam under conditions of deep silt layers. Background Technology

[0002] The full-span scaffolding cast-in-place cap beam uses steel pipe scaffolding, portal scaffolding, or cup-lock scaffolding as the support system. Longitudinal and transverse joists (steel or timber) are installed on the scaffolding, the bottom formwork is laid, and reinforcing bars are tied. Then, the side formwork is installed, and the cap beam concrete is poured. The weight of all temporary facilities and the beam itself during full-span scaffolding construction is borne by the scaffolding and directly transferred to the ground. The advantages of this method are: first, the form and height of the scaffolding can be varied according to the surrounding terrain and the height of the piers, making the method flexible; second, it eliminates the need for embedded parts on the piers, thus not affecting the appearance of the piers.

[0003] Full-span scaffolding for cast-in-place cap beams is suitable for land-based cap beams with high foundation bearing capacity, or for cap beams where the projected area is a foundation cap and the pier height is less than 5 meters. Full-span scaffolding is not suitable for cap beams with pier heights greater than 5 meters or those located on water or soft soil. The disadvantages of full-span scaffolding include numerous support points, a large foundation area requiring more space, a long construction period, and the need to reserve construction access or vehicle passageway under the cap beam. Construction is also restricted in narrow areas or on water surfaces. Furthermore, existing cap beam construction scaffolding has poor stability. Leveling is difficult when assembling scaffolding at the top of high piers, and the scaffolding is susceptible to external vibrations, making it prone to tilting during casting and potentially causing safety accidents. Summary of the Invention

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a construction support for a double-column cantilever cap beam under deep silt layer conditions, which facilitates construction on soft soil foundations, reduces the need for temporary steel pipe pile foundations, and ensures the overall stability and seismic resistance of the support.

[0005] To achieve the above-mentioned objectives, the technical solution adopted by this invention is as follows:

[0006] A construction support for a double-column cantilever cap beam under deep silt layer conditions is provided, which includes a left-side assembly truss and a right-side assembly truss respectively set on the two side piers. The upper ends of the left-side assembly truss and the right-side assembly truss are provided with diagonal support trusses. The left-side assembly truss and the right-side assembly truss are connected by an assembly component. The upper ends of the left-side assembly truss and the right-side assembly truss are provided with a middle support truss on the side near the assembly component. The two diagonal support trusses and the middle support truss form a concave cap beam support space.

[0007] Both the left and right assembly trusses are equipped with upper support seats at their lower ends, and the piers are equipped with lower support seats at their upper ends. Quick-release drop-off components are installed between the upper and lower support seats. An adjustment device is installed on the pier, and a support connecting rod that is driven by the adjustment device is installed on the quick-release drop-off component. The adjustment device adjusts the support height and level of the left and right assembly trusses by moving laterally in coordination with the support connecting rod. Primary and secondary auxiliary damping support structures are respectively installed between the quick-release drop-off component and the adjustment device, and at the lower end of the adjustment device.

[0008] Furthermore, the adjustment device includes an adjustment support ring fixed on the pier, and a first slide rail and a second slide rail are respectively provided on both sides of the adjustment support ring. The first slide rail and the second slide rail are parallel to the length direction of the left assembly truss and the right assembly truss.

[0009] The first and second slide rails are provided with grooves along their length, and the grooves are through strip-shaped holes. Both the first and second slide rails are provided with U-shaped sliders, which are fastened to the edges of the first and second slide rails, and the sliders are provided with sliding components that slide within the grooves.

[0010] The slider has a threaded sleeve on its side, an internal thread inside the threaded sleeve, and a threaded rod on the threaded sleeve, which is parallel to the slide groove; one end of the threaded rod is equipped with a wheel, and the other end is mounted on a bearing seat, which is fixed to the outer surface of the adjusting support ring.

[0011] The upper end of the slider is provided with a first hinge seat, and the side of the quick-release drop part is provided with a second hinge seat. A support link is provided between the first hinge seat and the second hinge seat, and the two ends of the support link are respectively hinged to the first hinge seat and the second hinge seat.

[0012] Furthermore, the quick-release component includes an upper support block located at the lower end of the upper support base and a lower support block located at the upper end of the lower support base. A first intermediate support block and a second intermediate support block are provided between the upper support block and the lower support block. The upper support block, the lower support block, the first intermediate support block, and the second intermediate support block are all symmetrical quadrangular frustum structures. The inclined surfaces of the upper support block, the lower support block, the first intermediate support block, and the second intermediate support block are joined together to form a square structure. A through hole is provided in the middle of the first intermediate support block and the second intermediate support block. A locking screw is provided in the through hole. The locking screw passes through the through hole to lock the first intermediate support block and the second intermediate support block. A U-shaped connector is provided on the bottom surface of both the first intermediate support block and the second intermediate support block. The head and tail of the locking screw are located in the internal gap of the connector. A second hinge seat is provided on the connector.

[0013] Furthermore, the sliding component includes a ball bearing sleeve, which is mounted on a support shaft. Both ends of the support shaft are mounted on support bushings. The slider has mounting grooves with lower openings on both sides. The support bushings are mounted at the bottom of the mounting grooves, and the sides of the mounting grooves have notches for the support shaft to pass through. The support bushings have several threaded holes arranged in a ring. Several fixing screws are arranged on the outside of the slider. The fixing screws pass through the sidewalls of the slider and are threadedly connected to the threaded holes.

[0014] Furthermore, the primary auxiliary damping support structure includes auxiliary damping support components installed at the lower end of the lower support base and the upper end of the adjusting support ring, and the secondary auxiliary damping support structure includes auxiliary damping support components installed at the lower end of the adjusting support ring and on the damping support ring, with the damping support ring fitted onto the pier column.

[0015] Furthermore, the auxiliary damping support includes a third hinge seat and a fourth hinge seat. The third hinge seat is fixed on the lower support seat or the adjusting support ring, and the fourth hinge seat is fixed on the adjusting support ring or the damping support ring.

[0016] A first damping link and a second damping link are provided between the third and fourth hinge seats. One end of the first damping link is hinged to the third hinge seat, and the other end is connected to the second damping link. The end of the second damping link is hinged to the fourth hinge seat. The first damping link and the second damping link form an obtuse angle, and the opening forming the obtuse angle faces the pier. The hinge positions of the first and second damping links are both hinged to the fifth hinge seat. A transverse damping support spring is provided on the fifth hinge seat. The damping support spring is fixed to the damping fixing ring, and the damping fixing ring is sleeved on the pier.

[0017] The lower end of the second shock-absorbing link is provided with a hinge block, and an extension rod is provided on the hinge block towards the pier. The hinge block is hinged to the fourth hinge seat, and the extension rod and the second shock-absorbing link are L-shaped. The end of the extension rod is provided with a locking plate, which is an arc-shaped plate structure that fits against the surface of the pier. The back of the locking plate is hinged to the extension rod.

[0018] Furthermore, both the left and right assembly trusses include parallel lower and upper trusses, with the upper support fixed to the lower truss. Several first vertical support beams are provided between the lower and upper trusses, and several first diagonal support beams are provided between the first vertical support beams. The first diagonal support beams are connected between the lower and upper trusses.

[0019] The diagonal bracing truss is installed on several first I-beams set at the upper end of the upper truss, and the several first I-beams are evenly distributed laterally on the upper truss; several second I-beams are set on the upper truss between the two diagonal bracing trusses, and the several second I-beams are evenly distributed laterally on the upper truss, and the first I-beams and second I-beams are installed in the slots opened in the upper truss.

[0020] The inclined support truss includes a horizontal lower support beam, an inclined support beam above the lower support beam, a number of second vertical support beams evenly arranged between the inclined support beam and the lower support beam, a number of second inclined support beams arranged between the number of second vertical support beams, and the second inclined support beams connect the inclined support beam and the lower support beam.

[0021] The assembly components are located at the ends of the lower and upper trusses. The assembly components include splice plates, and the splice plates on the left assembly truss are connected to the splice plates on the right assembly truss by splice bolts.

[0022] The beneficial effects of this invention are as follows: This solution, as a support for the construction of cap beams, facilitates construction on soft soil foundations, eliminates the need for temporary steel pipe pile foundations, and significantly reduces the cost of temporary measures. Especially for areas with soft foundations and limited underground construction space, it effectively reduces the number of landing support points, the foundation surface area, and the encroachment on site area, allowing for better utilization of site space. This invention innovatively utilizes the enlarged pile heads of bridge piers as supports for the construction scaffold, resulting in minimal settlement, high construction accuracy, and good stability.

[0023] The assembled construction scaffold can be leveled using an adjustment device. By rotating the wheels on both sides of the adjustment device, the slider is driven to move left and right along the slide groove, thereby adjusting the height of the quick-release components and leveling the tilted construction scaffold. Leveling can be achieved not only between the left and right assembly trusses by adjusting the adjustment devices on the two piers, but also by adjusting the wheels on both sides of a single adjustment device to level the connection point between the quick-release components and the pier support, preventing tilting of the quick-release components and ensuring the stability of the entire construction scaffold supported by them. Simultaneously, the adjustment device also provides support for the entire construction scaffold, distributing a portion of the support force borne by the upper end of the pier to the adjustment support ring, further ensuring the stability of the entire construction scaffold and reducing damage to the upper end of the pier.

[0024] Furthermore, the design of the primary and secondary auxiliary damping support structures can mitigate some of the instability caused by vibrations from the construction support. When the quick-release component descends, it drives the first and second damping linkages to bend, but this increases the clamping force of the locking plate on the pier, preventing the vibration of the quick-release component from affecting the stability of the adjusting support ring. The spring force of the damping support spring drives the quick-release component to quickly return to its original position, rapidly offsetting the downward pressure caused by vibration. The secondary auxiliary damping support structure performs the same function as the adjusting support ring, further providing support and improving vibration stability. Attached Figure Description

[0025] Figure 1 This is a structural diagram of the construction support for a double-column cantilever cap beam under conditions of deep silt layers.

[0026] Figure 2 This is a structural diagram of a secondary auxiliary damping support structure.

[0027] Figure 3 This is a front view of the quick-release component.

[0028] Figure 4 This is a top view of the quick-release component.

[0029] Figure 5 This is a diagram of the internal structure of the slider.

[0030] Figure 6 This is a diagram of the outer structure of the slider.

[0031] The components include: 1. Left-side assembly truss; 2. Lower truss; 3. Upper truss; 4. First vertical support beam; 5. First diagonal support beam; 6. First I-beam; 7. Lower support beam; 8. Diagonal support beam; 9. Second diagonal support beam; 10. Second vertical support beam; 11. Second I-beam; 12. Assembly component; 13. Upper support seat; 14. Lower support seat; 15. Primary auxiliary damping support structure; 16. First hinge seat; 17. Slider; 18. First slide rail; 19. Wheel; 20. Slide groove; 21. Threaded sleeve; 22. Threaded rod; 23. Secondary auxiliary damping support structure; 24. Damping support. 25. Support ring, 26. Bearing housing, 27. Adjusting support ring, 28. Third hinge seat, 29. First damping link, 30. Second damping link, 31. Fifth hinge seat, 32. Damping support spring, 33. Fourth hinge seat, 34. Extension rod, 35. Locking plate, 36. Connector, 37. Second hinge seat, 38. Lower support block, 49. Upper support block, 40. First intermediate support block, 41. Second intermediate support block, 42. Locking screw, 43. Ball sleeve, 44. Support shaft, 45. Mounting groove, 46. Support shaft sleeve, 47. Fixing screw, 48. Notch, 49. Support link. Detailed Implementation

[0032] The specific embodiments of the present invention are described below to enable those skilled in the art to understand the present invention. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they are within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0033] like Figure 1As shown, the construction support for the double-column cantilever cap beam under the deep silt layer conditions of this scheme includes a left-side assembly truss 1 and a right-side assembly truss respectively set on the two side piers. The left-side assembly truss 1 and the right-side assembly truss are identical in structure and installed symmetrically. The upper ends of the left-side assembly truss 1 and the right-side assembly truss are provided with diagonal support trusses. The left-side assembly truss 1 and the right-side assembly truss are connected by assembly component 12. The upper ends of the left-side assembly truss 1 and the right-side assembly truss are provided with a middle support truss on the side close to the assembly component 12. The diagonal support trusses on both sides and the middle support truss form a concave cap beam support space for casting the cap beam.

[0034] The lower ends of the left and right assembly trusses are each provided with an upper support seat 13, and the upper end of the pier is provided with a lower support seat 14. A quick-release drop piece is provided between the upper support seat 13 and the lower support seat 14. An adjustment device is provided on the pier, and a support rod 48 connected to the adjustment device is provided on the quick-release drop piece. The adjustment device adjusts the support height and level of the left and right assembly trusses by moving laterally and cooperating with the support rod 48. A primary auxiliary damping support structure 15 and a secondary auxiliary damping support structure 23 are respectively provided between the quick-release drop piece and the adjustment device, and at the lower end of the adjustment device.

[0035] This design, serving as a support structure for bridge pier construction, facilitates construction on soft soil foundations and eliminates the need for temporary steel pipe pile foundations, significantly reducing temporary measures costs. Particularly suitable for areas with soft foundations and limited underground construction space, it effectively reduces the number of landing points, the foundation surface area, and the encroachment on site space, allowing for better utilization of available space. This invention innovatively utilizes enlarged pile heads of bridge piers as support for the construction scaffold, resulting in minimal settlement, high construction precision, and excellent stability.

[0036] In this embodiment, the adjustment device includes an adjustment support ring 26 fixed on the pier. A first slide rail 18 and a second slide rail are respectively provided on both sides of the adjustment support ring 26. The first slide rail 18 and the second slide rail are parallel to the length direction of the left assembly truss 1 and the right assembly truss.

[0037] The first slide rail 18 and the second slide rail are provided with a groove 20 along the length direction. The groove 20 is a through strip-shaped hole structure. Both the first slide rail 18 and the second slide rail are provided with a U-shaped slider 17. The slider 17 is fastened to the edge of the first slide rail 18 and the second slide rail, and a sliding element that slides in the groove 20 is provided inside the slider 17.

[0038] The side of the slider 17 is provided with a threaded sleeve 21, the threaded sleeve 21 is provided with an internal thread, and the threaded sleeve 21 is provided with a threaded rod 22, which is parallel to the slide groove 20; one end of the threaded rod 22 is provided with a rotating wheel 19, and the other end is provided on a bearing seat 25, which is fixed on the outer side of the adjusting support ring 26.

[0039] The upper end of the slider 17 is provided with a first hinge seat 16, and the side of the quick-release drop part is provided with a second hinge seat 36. A support rod 48 is provided between the first hinge seat 16 and the second hinge seat 36, and the two ends of the support rod 48 are respectively hinged to the first hinge seat 16 and the second hinge seat 36.

[0040] The assembled construction scaffold can be leveled using an adjustment device. By rotating the wheels 19 on both sides of the adjustment device, the slider 17 is driven to move left and right along the slide groove 20, thereby adjusting the height of the quick-release drop piece and leveling the tilted construction scaffold. Leveling can be achieved not only between the left and right assembly trusses by adjusting the adjustment devices on the two piers, but also by adjusting the wheels 19 on both sides of a single adjustment device to level the connection position between the quick-release drop piece and the pier support, preventing the quick-release drop piece from tilting and ensuring the stability of the quick-release drop piece supporting the entire construction scaffold. Simultaneously, the adjustment device also provides support for the entire construction scaffold, distributing a portion of the support force borne by the upper end of the pier to the adjustment support ring 26, further ensuring the stability of the entire construction scaffold and reducing damage to the upper end of the pier.

[0041] like Figure 3 and Figure 4 As shown, in this embodiment, the quick-release component includes an upper support block 38 disposed at the lower end of the upper support base 13 and a lower support block 37 disposed at the upper end of the lower support base 14. A first intermediate support block 39 and a second intermediate support block 40 are disposed between the upper support block 38 and the lower support block 37. The upper support block 38, the lower support block 37, the first intermediate support block 39, and the second intermediate support block 40 are all symmetrical truncated pyramid structures. The inclined surfaces are joined together to form a square structure. The middle of the first intermediate support block 39 and the second intermediate support block 40 is provided with a through hole. A locking screw 41 is provided in the through hole. The locking screw 41 passes through the through hole to lock the first intermediate support block 39 and the second intermediate support block 40. U-shaped connectors 35 are provided on the bottom surface of the first intermediate support block 39 and the second intermediate support block 40. The head and tail of the locking screw 41 are located in the internal gap of the connector 35. The second hinge seat 36 is provided on the connector 35.

[0042] After the cap beam is poured, the quick-release components can be released quickly by loosening the locking screws 41, ensuring that the cap beam can be quickly placed on the pier when the entire construction support is dismantled. During the cap beam pouring process, the upper support block 38, lower support block 37, first intermediate support block 39, and second intermediate support block 40 are locked by the locking screws 41 to achieve stable support for the entire construction support.

[0043] like Figure 5 and Figure 6 As shown, the sliding component includes a ball bearing sleeve 42, which is mounted on a support shaft 43. Both ends of the support shaft 43 are mounted on support bushings 45. The slider 17 has mounting grooves 44 with open lower ends on both sides. The support bushings 45 are mounted at the bottom of the mounting grooves 44. The side of the mounting grooves 44 has notches 47 for the support shaft 43 to pass through. The support bushings 45 have a plurality of threaded holes arranged in a ring. The outside of the slider 17 has a plurality of fixing screws 46, which pass through the side wall of the slider 17 and are threadedly connected to the threaded holes.

[0044] The design of the ball bearing sleeve 42 ensures that the slider 17 can slide quickly on the first slide rail 18 and the second slide rail. The ball bearing sleeve 42 provides good support, the slider 17 has good reliability, and it is easy to assemble.

[0045] like Figure 2 As shown, in this embodiment, the primary auxiliary damping support structure 15 includes an auxiliary damping support member disposed at the lower end of the lower support seat 14 and the upper end of the adjusting support ring 26, and the secondary auxiliary damping support structure 23 includes an auxiliary damping support member disposed at the lower end of the adjusting support ring 26 and on the damping support ring 24, and the damping support ring 24 is sleeved on the pier column.

[0046] The auxiliary damping support includes a third hinge seat 27 and a fourth hinge seat 32. The third hinge seat 27 is fixed on the lower support seat 14 or the adjusting support ring 26, and the fourth hinge seat 32 is fixed on the adjusting support ring 26 or the damping support ring 24.

[0047] A first damping link 28 and a second damping link 29 are provided between the third hinge seat 27 and the fourth hinge seat 32. One end of the first damping link 28 is hinged to the third hinge seat 27, and the other end is connected to the second damping link 29. The end of the second damping link 29 is hinged to the fourth hinge seat 32. The first damping link 28 and the second damping link 29 form an obtuse angle, and the opening forming the obtuse angle faces the pier. The hinge positions of the first damping link 28 and the second damping link 29 are both hinged to the fifth hinge seat 30. A transverse damping support spring 31 is provided on the fifth hinge seat 30. The damping support spring 31 is fixed to the damping fixing ring, and the damping fixing ring is sleeved on the pier.

[0048] The lower end of the second shock-absorbing link 29 is provided with a hinge block, and an extension rod 33 is provided on the hinge block toward the pier. The hinge block is hinged to the fourth hinge seat 32, and the extension rod 33 and the second shock-absorbing link 29 are L-shaped. The end of the extension rod 33 is provided with a locking plate 34, which is an arc-shaped plate structure that fits against the surface of the pier. The back of the locking plate 34 is hinged to the extension rod 33.

[0049] The design of the primary auxiliary damping support structure 15 and the secondary auxiliary damping support structure 23 can mitigate some of the instability caused by vibrations from the construction support. When the quick-release component descends, it drives the first damping link 28 and the second damping link 29 to bend, but this increases the clamping force of the locking plate 34 on the pier column, preventing the vibration of the quick-release component from affecting the stability of the adjusting support ring 26. The spring force of the damping support spring 31 can drive the quick-release component to quickly return to its original position, quickly offsetting the downward pressure caused by vibration. The secondary auxiliary damping support structure 23 has the same performance as the adjusting support ring 26, further providing support for the adjusting support ring 26 and improving vibration stability.

[0050] In this embodiment, both the left-side assembly truss 1 and the right-side assembly truss include parallel lower truss 2 and upper truss 3. Both the lower truss 2 and the upper truss 3 can be made of I-beams, which have high support strength. The upper support seat 13 is fixed on the lower truss 2. A plurality of first vertical support beams 4 are provided between the lower truss 2 and the upper truss 3. A plurality of first diagonal support beams 5 are provided between the plurality of first vertical support beams 4, and the first diagonal support beams 5 are connected between the lower truss 2 and the upper truss 3.

[0051] The diagonal support truss is installed on several first I-beams 6 set on the upper end of the upper truss 3. The several first I-beams 6 are evenly distributed laterally on the upper truss 3. Several second I-beams 11 are set on the upper truss 3 between the two diagonal support trusses. The several second I-beams 11 are evenly distributed laterally on the upper truss 3, and the first I-beams 6 and the second I-beams 11 are installed in the slots opened in the upper truss 3.

[0052] The inclined support truss includes a horizontal lower support beam 7, an inclined support beam 8 above the lower support beam 7, a plurality of second vertical support beams 10 evenly arranged between the inclined support beam 8 and the lower support beam 7, a plurality of second inclined support beams 9 arranged between the plurality of second vertical support beams 10, and the second inclined support beams 9 connecting the inclined support beam 8 and the lower support beam 7.

[0053] Assembly 12 is located at the ends of the lower truss 2 and the upper truss 3. Assembly 12 includes splicing plates. The splicing plates on the left assembly truss 1 and the splicing plates on the right assembly truss are connected by splicing bolts to facilitate hoisting and assembly.

Claims

1. A construction support system for a double-column cantilever cap beam under deep silt layer conditions, characterized in that, It includes a left-side assembly truss and a right-side assembly truss respectively set on the two side piers. The upper end of the left-side assembly truss and the right-side assembly truss is provided with a diagonal support truss. The left-side assembly truss and the right-side assembly truss are connected by an assembly component. The upper end of the left-side assembly truss and the right-side assembly truss is provided with a middle support truss on the side of the assembly component. The diagonal support truss and the middle support truss on both sides form a concave cap beam support space. The lower ends of both the left and right assembly trusses are provided with upper support seats, and the upper end of the pier is provided with a lower support seat. A quick-release drop piece is provided between the upper and lower support seats. An adjustment device is provided on the pier, and a support connecting rod that is pulsatorically connected to the adjustment device is provided on the quick-release drop piece. The adjustment device adjusts the support height and levelness of the left and right assembly trusses by moving laterally in cooperation with the support connecting rod. A primary auxiliary damping support structure and a secondary auxiliary damping support structure are respectively provided between the quick-release drop piece and the adjustment device, and at the lower end of the adjustment device. The primary auxiliary damping support structure includes auxiliary damping support components disposed at the lower end of the lower support base and the upper end of the adjusting support ring. The secondary auxiliary damping support structure includes auxiliary damping support components disposed at the lower end of the adjusting support ring and on the damping support ring, and the damping support ring is sleeved on the pier column. The auxiliary damping support includes a third hinge seat and a fourth hinge seat. The third hinge seat is fixed on the lower support seat or the adjusting support ring, and the fourth hinge seat is fixed on the adjusting support ring or the damping support ring. A first damping link and a second damping link are provided between the third hinge seat and the fourth hinge seat. One end of the first damping link is hinged to the third hinge seat, and the other end is connected to the second damping link. The end of the second damping link is hinged to the fourth hinge seat. The first damping link and the second damping link form an obtuse angle, and the opening forming the obtuse angle faces the pier. The hinge positions of the first damping link and the second damping link are both hinged to a fifth hinge seat. A transverse damping support spring is provided on the fifth hinge seat. The damping support spring is fixed to a damping fixing ring, and the damping fixing ring is sleeved on the pier. The lower end of the second shock-absorbing link is provided with a hinge block, and an extension rod is provided on the hinge block toward the pier. The hinge block is hinged to the fourth hinge seat, and the extension rod and the second shock-absorbing link are L-shaped. The end of the extension rod is provided with a locking plate, which is an arc-shaped plate structure that fits against the surface of the pier. The back of the locking plate is hinged to the extension rod.

2. The construction support for a double-column cantilever cap beam under deep silt layer conditions as described in claim 1, characterized in that, The adjustment device includes an adjustment support ring fixed on the pier. A first slide rail and a second slide rail are respectively provided on both sides of the adjustment support ring. The first slide rail and the second slide rail are parallel to the length direction of the left assembly truss and the right assembly truss. The first and second slide rails are provided with grooves along their length, and the grooves are through strip-shaped holes; both the first and second slide rails are provided with U-shaped sliders, which are fastened to the edges of the first and second slide rails, and the sliders are provided with sliding components that slide within the grooves. The slider has a threaded sleeve on its side, an internal thread inside the threaded sleeve, and a threaded rod on the threaded sleeve, which is parallel to the slide groove; one end of the threaded rod is provided with a rotating wheel, and the other end is provided on a bearing seat, which is fixed to the outer side of the adjusting support ring. The upper end of the slider is provided with a first hinge seat, and the side of the quick-release dropper is provided with a second hinge seat. A support link is provided between the first hinge seat and the second hinge seat, and the two ends of the support link are respectively hinged to the first hinge seat and the second hinge seat.

3. The construction support for a double-column cantilever cap beam under deep silt layer conditions as described in claim 2, characterized in that, The quick-release component includes an upper support block located at the lower end of the upper support base and a lower support block located at the upper end of the lower support base. A first intermediate support block and a second intermediate support block are provided between the upper support block and the lower support block. The upper support block, the lower support block, the first intermediate support block, and the second intermediate support block are all symmetrical truncated pyramid structures, and the inclined surfaces of the upper support block, the lower support block, the first intermediate support block, and the second intermediate support block are joined together to form a square structure. A through hole is provided in the middle of the first intermediate support block and the second intermediate support block. A locking screw is provided in the through hole. The locking screw passes through the through hole to lock the first intermediate support block and the second intermediate support block. A U-shaped connector is provided on the bottom surface of the first intermediate support block and the second intermediate support block. The head and tail of the locking screw are located in the internal gap of the connector. The second hinge seat is provided on the connector.

4. The construction support for a double-column cantilever cap beam under deep silt layer conditions as described in claim 2, characterized in that, The sliding component includes a ball bearing sleeve, which is mounted on a support shaft. Both ends of the support shaft are mounted on support bushings. The slider has mounting grooves with lower openings on both sides. The support bushings are mounted at the bottom of the mounting grooves, and the sides of the mounting grooves have notches for the support shaft to pass through. The support bushings have a plurality of threaded holes arranged in a ring. The slider has a plurality of fixing screws on its outer side, which pass through the sidewall of the slider and are threadedly connected to the threaded holes.

5. The construction support for a double-column cantilever cap beam under deep silt layer conditions as described in claim 1, characterized in that, The left and right assembly trusses each include parallel lower and upper trusses. The upper support is fixed on the lower truss. A plurality of first vertical support beams are provided between the lower and upper trusses. A plurality of first diagonal support beams are provided between the plurality of first vertical support beams. The first diagonal support beams are connected between the lower and upper trusses. The diagonal support truss is installed on several first I-beams set at the upper end of the upper truss, and the several first I-beams are evenly distributed laterally on the upper truss; several second I-beams are set on the upper truss between the two diagonal support trusses, and the several second I-beams are evenly distributed laterally on the upper truss, and the first I-beams and second I-beams are installed in the slots opened in the upper truss. The inclined support truss includes a horizontal lower support beam, an inclined support beam is provided above the lower support beam, a plurality of second vertical support beams are evenly provided between the inclined support beam and the lower support beam, a plurality of second inclined support beams are provided between the plurality of second vertical support beams, and the second inclined support beams connect the inclined support beam and the lower support beam. The assembly is located at the ends of the lower truss and the upper truss. The assembly includes splicing plates, and the splicing plates on the left assembly truss and the right assembly truss are connected by splicing bolts.

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