Bridge foundation construction platform under deepwater bare rock environment

Abstract

The utility model provides a bridge foundation construction platform in a deepwater bare rock environment, which is characterized in that two branch trestles distributed in parallel are arranged on the side part of a trestle, two rows of steel pipe piles are arranged below the branch trestles, and first brackets are arranged on the sides, close to each other, of the two rows of steel pipe piles and are used for supporting the branch trestles; the two sliding beams are located on the adjacent sides of the two branch trestles correspondingly and supported through second brackets fixed to the steel pipe piles. The sliding platform is used for bearing an underwater operation device, sliding blocks corresponding to the sliding beams are arranged on the two sides of the sliding platform, and the sliding platform is slidably assembled along the sliding beams; the traction equipment is fixed to the two ends of the sliding beam and correspondingly pulls the sliding platform to slide along the sliding beam by driving the steel cable. The branch trestle is arranged on the side portion of the existing trestle to achieve movement of the sliding platform, the sliding platform drives the rotary drilling rig, the percussion drill, the slot milling machine and other equipment to achieve riverbed rock cleaning within the bridge foundation range, underwater riverbed cleaning and bridge pile foundation drilling pile construction are completed, the construction difficulty is reduced, the construction efficiency is improved, and the construction cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge foundation construction, and particularly relates to a bridge foundation construction platform in a deep-water bare rock environment. Background Art

[0002] The utility model technologies of bridge foundation construction platforms and construction methods in deep-water bare rock environments focus on bare rock riverbed blasting and foundation cleaning technologies, steel pipe pile driving and planting technologies and equipment, barge assembly floating platform technologies, fixed platform floating transportation, positioning and orientation technologies, platform lifting and lowering technologies with water level changes, etc. The existing construction technologies have not solved the problems of how to combine the rock cleaning platform with the drilling platform to address the rapid connection of construction processes and increased construction costs brought about by deep-buried bridge foundations in deep-water bare rock environments.

[0003] Therefore, an improved technical solution is needed to address the deficiencies of the above existing technologies. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the above existing technologies, and the utility model provides a bridge foundation construction platform in a deep-water bare rock environment.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A bridge foundation construction platform in a deep-water bare rock environment, comprising:

[0007] A trestle, two parallel branch trestles are provided on the side of the trestle, two rows of steel pipe piles are provided below the branch trestles, and a first corbel is provided on the side where the two rows of steel pipe piles are close to each other for supporting the branch trestle;

[0008] Sliding beams, the two sliding beams are respectively located on the adjacent sides of the two branch trestles and are supported by second corbels fixed on the steel pipe piles;

[0009] A sliding platform for carrying underwater operation devices, sliders corresponding to the sliding beams are provided on both sides of the sliding platform, and the sliding platform is slidably assembled along the sliding beams;

[0010] Traction equipment fixed at both ends of the sliding beam, and the sliding platform is correspondingly pulled along the sliding beam by driving steel cables.

[0011] Preferably, pile holes corresponding to the steel pipe piles are provided in the bedrock, the bottom of the steel pipe piles extends into the pile holes, and anchor piles are provided inside the steel pipe piles, and the anchor piles extend downward beyond the lower end surface of the steel pipe piles.

[0012] Preferably, the length of the slider is adapted to the width of the sliding platform. A chute corresponding to the sliding beam is provided below the slider, and the slider is correspondingly connected to the traction device.

[0013] Preferably, the sliding beam is an I-beam. Limit pins are provided on both sides of the slider. After passing through the chute, the limit pins extend to the web of the sliding beam.

[0014] Preferably, the traction device is a hollow self-locking oil cylinder.

[0015] Preferably, a tie rod is provided between two adjacent steel pipe piles. The branch trestle includes multiple groups of parallelly distributed Bailey beams. A distribution beam and a bridge deck are laid above the multiple Bailey beams;

[0016] The sliding beam extends outwards on both sides with multiple groups of connecting plates corresponding to the Bailey beams respectively. U-shaped bolts are provided below the Bailey beams. The two ends of the U-shaped bolts pass through the connecting plates downward and then are connected with nuts.

[0017] Preferably, fixed workstations corresponding to both ends of the Bailey beam are provided on adjacent sides of the branch trestle. The fixed workstations are the first fixing plates corresponding to the Bailey beam. A second fixing plate corresponding to and facing the first fixing plate is provided at the end of the Bailey beam. The first fixing plate and the second fixing plate are fixed by bolts to lock the sliding platform.

[0018] Preferably, the multiple limit pins are staggered and distributed on both sides of the slider. The limit pins pass through the sliding beam from one side of the slider and extend out from the other side of the slider. The limit pins are bolts, and the limit pins pass through the slider and are correspondingly connected with nuts.

[0019] Beneficial effects: The movement of the sliding platform is realized by setting a branch trestle on the side of the existing trestle. The sliding platform drives equipment such as rotary drilling rigs, impact drills, and milling machines to clean the riverbed rocks within the bridge foundation range, complete the underwater riverbed cleaning and the construction of bored piles for bridge foundations, reduce the construction difficulty, improve the construction efficiency, and save the construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The schematic diagrams in the specification drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. Among them:

[0021] Figure 1 is the structural schematic diagram of the construction platform in the specific embodiment provided by the present invention;

[0022] Figure 2 is the installation schematic diagram of the sliding platform in the specific embodiment provided by the present invention;

[0023] Figure 3 Distribution schematic diagram of traction equipment in the specific embodiment provided by the present utility model;

[0024] Figure 4 is Figure 2 Enlarged schematic diagram at position A in

[0025] In the figure: 1, trestle; 2, branch trestle; 3, sliding platform; 4, construction area of bearing platform; 5, steel pipe pile; 6, first bracket; 7, sliding beam; 8, slider; 9, traction equipment; 10, tie rod; 11, second bracket. Specific implementation mode

[0026] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present utility model.

[0027] In the description of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model rather than requiring the present utility model to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. The terms "connected" and "connected" used in the present utility model should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific situations.

[0028] Next, the present utility model will be described in detail with reference to the drawings and in conjunction with the embodiments. It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0029] Such as Figures 1-4As shown, in the construction of bridge foundations in deep-water bare-rock environments, steel pipe support piles are often set within the bridge cap range to serve as a drilling construction platform, which causes great interference to the underwater rock cleaning using the drilling platform in the early stage and does not solve the fixed-platform construction technology for bridge bored pile construction without setting up a drilling platform for the pile foundation; in the existing technology, in deep-water bare-rock environments where blasting cannot be used, there is no way to use a fixed construction platform for large-area non-blasting excavation of the foundation, resulting in a separated design for the drilling platform and the two side construction support trestles 2, and it cannot solve the problems of the deep driving depth of the steel pipe piles 5 of the drilling platform and the great construction difficulty due to the deep embedding of the bridge foundation in the rock layer in the deep-water bare-rock environment, as well as the interference of the steel pipe piles 5 of the drilling platform to the riverbed excavation within the bridge foundation range, leading to the slow connection of construction processes and the increase in construction costs.

[0030] To solve the above technical problems and use the existing trestle 1 to realize the movement of the rock cleaning platform and the cleaning of the riverbed rock within the bridge foundation range, the present application provides a bridge foundation construction platform in a deep-water bare-rock environment, which includes a trestle 1, sliding beams 7, a sliding platform 3, and a traction device 9. First, the bridge trestle 1 is constructed by the fishing method. The trestle 1 has a conventional structure. There are two parallel support trestles 2 on the side of the trestle 1, and the support trestles 2 are respectively located on both sides of the preset bridge cap construction area 4. There are two rows of steel pipe piles 5 under the support trestles 2, and the two rows of steel pipe piles 5 are respectively located on both sides of the support trestles 2. On the side where the two rows of steel pipe piles 5 are close to each other, there is a first bracket 6, and the first bracket 6 is fixed to the steel pipe pile 5 by welding for supporting the support trestle 2. Two sliding beams 7 are respectively located on the adjacent sides of the two support trestles 2 and are supported by the second brackets 11 fixed to the steel pipe piles 5. The length of the sliding beam 7 extends along the extension direction of the support trestle 2, so that the two sliding beams 7 on both sides extend in parallel. The sliding platform 3 is used to carry underwater operation devices, such as rotary drilling rigs, impact drills, grooving machines and other equipment, and thus serves as an operation platform for the underwater operation devices. On both sides of the sliding platform 3, there are sliders 8 corresponding to the sliding beams 7, and the sliders 8 are slidably assembled along the sliding beams 7, so that the sliding platform 3 can slide along the sliding beams 7, driving the underwater operation devices to realize the cleaning and leveling of the bare rock on the riverbed within the bridge cap range.

[0031] The traction device 9 is fixed at both ends of the sliding beam 7 and drives the steel cable to correspondingly pull the sliding platform 3 to slide along the sliding beam 7. Riverbed rock excavation and cleaning work are carried out on the movable rock cleaning platform using equipment such as rotary bored piles, impact drills, and grab buckets. Along the span direction of the rock cleaning platform, the machine can move by itself, and along the direction perpendicular to the span of the rock cleaning platform, the movement can be realized by the traction device 9, ensuring that all areas of the bridge cap construction area 4 can be cleaned.

[0032] In an alternative embodiment, a pile hole corresponding to the steel pipe pile 5 is provided in the bedrock. The pile hole is formed by the pile fishing method. The bottom of the steel pipe pile 5 extends into the pile hole. The support trestles 2 on both sides of the bearing platform are constructed by the fishing method. Anchor piles are provided inside the steel pipe pile 5. After the construction of the support trestles 2 is completed, the construction of the anchor piles is immediately carried out; the anchor piles extend downward beyond the lower end surface of the steel pipe pile 5, thus forming a combined form of the steel pipe pile 5 + anchor piles, and there is no need for a pile driving boat or other floating platforms on the water in the deep-water bare rock environment; the construction of the anchor piles and the insertion process of the steel pipe pile 5 can be separated before and after, and the anchor piles can be constructed later. The trestle enables the ability to quickly have traffic, greatly saving the construction period.

[0033] After all the anchor piles of the support trestle 2 are completed, install the sliding beam 7 of the moving platform on the bracket 2 at the top of the steel pipe pile 5 of the trestle; install the slider 8 on the top of the sliding beam 7, install the Bailey beam and the bridge deck of the moving rock cleaning platform on the top of the slider 8, and connect the traction device 9 with the slider 8 as a whole; install the slider 8 on the top of the sliding beam 7, install the Bailey beam and the bridge deck of the moving rock cleaning platform on the top of the slider 8, and connect the traction device 9 with the slider 8 as a whole.

[0034] In an alternative embodiment, the slider 8 is a block structure, and the support trestle 2 is spliced by a plurality of Bailey beams. A slider 8 is provided at the bottom of each end of each Bailey beam.

[0035] Alternatively, the slider 8 is strip-shaped, the length of the slider 8 is adapted to the width of the sliding platform 3, a chute corresponding to the sliding beam 7 is provided below the slider 8, the width of the chute is adapted to the width of the sliding beam 7, and the slider 8 is correspondingly connected to the traction device 9. The traction device 9 can be a winch or a hollow self-locking oil cylinder. Preferably, the traction device 9 is a hollow self-locking oil cylinder, so as to ensure sufficient traction force. Hollow self-locking oil cylinders are arranged at both ends of each sliding beam 7, so as to realize bidirectional sliding. One end of the driving steel cable is fixed on the slider 8, and the other end passes through the hollow self-locking oil cylinder and then is connected to the automatic reel, which can wind up the driving steel cable and ensure that the driving steel cable does not affect the movement of the sliding platform 3. It realizes the dead-angle-free excavation and cleaning of the riverbed rock within the construction range of the bridge bearing platform. Compared with the traditional platform, it can reduce the material input and save costs.

[0036] In an alternative embodiment, the sliding beam 7 is an I-beam, which is fixed to the second bracket 11 by welding or bolts. Limit pins are provided on both sides of the slider 8. The limit pins extend through one side of the chute and reach the web of the sliding beam 7, so as to form a limit with the sliding beam 7 longitudinally. The limit pins can be bolts, so that the limit can be achieved by rotating the bolts to extend into the chute.

[0037] In an alternative embodiment, after the rock in the construction area 4 of the bridge pier cap is cleared, the Bailey beams of the drilling platform are directly installed on the sliding beam 7, and the original rock clearing platform is also directly fixed to the sliding beam 7 as part of the drilling platform. After the drilling platform is erected, pile foundation drilling equipment is used to construct the bored piles on the drilling platform. After all the bored piles are constructed, the Bailey beams of the drilling platform are removed, and the next construction process is entered.

[0038] The distance between the two branch trestles 2 is adapted to the length of the sliding platform 3. Fixed workstations corresponding to both ends of the Bailey beam are provided on the adjacent sides of the branch trestles 2. The fixed workstations are the first fixing plates corresponding to the Bailey beam. Second fixing plates corresponding to and facing the first fixing plates are provided at the ends of the Bailey beam. If there is a gap, a spacer plate can be inserted between the first fixing plate and the second fixing plate. In this way, the first fixing plate and the second fixing plate are fixed by bolts to lock the sliding platform 3, thereby connecting the two into a whole. Thus, the construction of the pier cap can be realized through this platform, greatly improving the work efficiency and saving the construction period and cost.

[0039] In an alternative embodiment, the sliding block 8 is provided with through holes penetrating both of its sides. A plurality of limit pins are staggered on both sides of the sliding block 8, that is, on one side of the sliding block 8, the limit pins are installed in a form of one set at every other position. Through holes corresponding to the fixed workstations of the sliding platform 3 are provided on the sliding beam 7. On any side of the sliding block 8, the limit pin passes through the sliding beam 7 from one side of the sliding block 8 and extends out from the other side of the sliding block 8. The limit pin is a bolt, and the limit pin passes through the sliding block 8 and is correspondingly connected with a nut. In this way, the sliding block 8 and the sliding beam 7 can be fixed.

[0040] A tie rod 10 is provided between two adjacent steel pipe piles 5, and the tie rod 10 is fixed by welding. The branch trestle 2 includes multiple groups of Bailey beams distributed in parallel. A distribution beam and a bridge deck are laid above the multiple Bailey beams. The distribution beam is located between the Bailey beam and the bridge deck and is used to connect the multiple Bailey beams into a whole. The sliding beam 7 extends outwards on both sides with multiple groups of connecting plates corresponding to the Bailey beams respectively. The connecting plates can be welded strip plates. U-shaped bolts are provided under the Bailey beams. The two ends of the U-shaped bolts pass downwards through the connecting plates and are then connected with nuts to lock and fix the Bailey beams.

[0041] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A bridge foundation construction platform in a deep - water bare - rock environment, characterized in that, Comprising: A trestle, on the side of which there are two branch trestles distributed in parallel. Under the branch trestles, there are two rows of steel pipe piles. On the side where the two rows of steel pipe piles are close to each other, there is a first bracket for supporting the branch trestles. Sliding beams, two of which are respectively located on the adjacent sides of the two branch trestles and are supported by second brackets fixed on the steel pipe piles. A sliding platform for carrying an underwater operation device. On both sides of the sliding platform, there are sliders corresponding to the sliding beams and are slidably assembled along the sliding beams. Traction equipment fixed at both ends of the sliding beams, and corresponding to drive steel cables to traction the sliding platform to slide along the sliding beams.

2. The bridge foundation construction platform in the deep-water bare rock environment according to claim 1, wherein In the bedrock, there are pile holes corresponding to the steel pipe piles. The bottom of the steel pipe piles extends into the pile holes. Inside the steel pipe piles, there are anchor piles, and the anchor piles extend downward beyond the lower end surface of the steel pipe piles.

3. The bridge foundation construction platform in a deep-water bare rock environment according to claim 1, characterized in that, The length of the sliders is adapted to the width of the sliding platform. Below the sliders, there are chutes corresponding to the sliding beams, and the sliders are correspondingly connected to the traction equipment.

4. The bridge foundation construction platform in a deep-water bare rock environment according to claim 3, wherein, The sliding beams are I-beams. On both sides of the sliders, there are limit pins, and the limit pins extend to the web of the sliding beams after passing through the chutes.

5. The bridge foundation construction platform in a deep-water bare rock environment according to claim 1, characterized in that, The traction equipment is a hollow self-locking oil cylinder.

6. The bridge foundation construction platform in a deep-water bare rock environment according to claim 4, wherein, There is a tie rod between adjacent two steel pipe piles. The branch trestles include multiple groups of parallel-distributed Bailey beams. Above the multiple Bailey beams, there are distribution beams and bridge decks laid. The sliding beams extend outwards on both sides with multiple groups of connecting plates respectively corresponding to the Bailey beams. Below the Bailey beams, there are U-bolts, and both ends of the U-bolts pass downward through the connecting plates and then connect nuts.

7. The bridge foundation construction platform in a deep-water bare rock environment according to claim 6, wherein, On the adjacent sides of the branch trestles, there are fixed workstations corresponding to both ends of the Bailey beams. The fixed workstations are first fixing plates corresponding to the Bailey beams. At the end of the Bailey beam, there is a second fixing plate corresponding to and facing the first fixing plate. The first fixing plate and the second fixing plate are fixed by bolts to lock the sliding platform.

8. The bridge foundation construction platform in a deep-water bare rock environment according to claim 7, characterized in that, Multiple limit pins are staggered and distributed on both sides of the sliders. The limit pins pass through the sliding beams from one side of the sliders and then extend out from the other side of the sliders. The limit pins are bolts, and the limit pins pass through the sliders and correspondingly connect nuts.

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