Platform for bridge bored pile foundation construction in high-flow-speed shallow water open water area

Abstract

The utility model discloses a platform for bridge bored pile foundation construction in a high-flow-speed shallow water open water area, which comprises a main trestle, a branch trestle, a top module and a bottom module, the main trestle, the branch trestle, the top module and the bottom module are lapped along the bridge direction after soil is backfilled in a cofferdam to form a flat construction platform, and a drilling machine can be moved from the main trestle or hoisted to the bottom module for drilling construction. The stable construction position of the drilling machine is guaranteed, the situation that the construction process is affected by uneven soil and uneven density is avoided, guide holes are formed in the positions, corresponding to the drilled piles, of the bottom module, the guide holes and to-be-drilled holes are concentric, the guide holes can serve as guide structures during drilling construction of the drilling machine, the drilling construction efficiency is improved, and the construction cost is reduced. The top module is laid on the soil platform to be in lap joint with the branch trestle, the occupied river flood discharge section can be relatively reduced, water body flood discharge and construction flood risk reduction are facilitated, a steel platform does not need to be erected in the traditional construction process, temporary facility investment is small, the resource utilization rate is high, and the construction period is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to the construction structure technical field of pile foundation and bearing platform in bridge engineering, more specifically, the utility model relates to a platform for bridge bored pile foundation construction in large flow velocity shallow water open water area. BACKGROUND

[0002] The domestic and foreign construction of the bridge bored pile foundation and the lower structure in water usually adopts the steel drilling platform to carry out the bored pile construction, and then the steel platform is removed to install the hanging box, the bottom is sealed under water, and then the bearing platform and other bridge lower structure construction are carried out. The construction method has many procedures, long water operation time, long total construction period, large steel quantity, more resources such as equipment need to be invested, and high comprehensive cost.

[0003] For some shallow water area, the construction method of island building by soil and stone slope is used, and for the working condition with large flow velocity, the construction case of dike cofferdam is also used. The above method has large soil and stone engineering quantity, occupies more river flood discharge section, and also faces large flood risk.

[0004] In view of the foregoing construction difficulties, the comprehensive platform structure of the steel platform and the cofferdam filled with soil to form the soil platform is used at present, although the erection area of the steel platform is reduced to a certain extent, but the construction efficiency and usefulness still need to be improved, and the problems of uneven filling of the soil platform, stability of the soil body affected by the gravity of the drilling machine and other equipment and construction still exist. SUMMARY

[0005] The utility model discloses a platform for bridge bored pile foundation construction in large flow velocity shallow water open water area, which solves the technical problems of low arrangement efficiency and large occupation of river flood discharge section of the existing drilling construction platform for bridge bored pile foundation construction in large flow velocity shallow water open water area.

[0006] In order to realize the purposes and other advantages of the utility model, a platform for bridge bored pile foundation construction in large flow velocity shallow water open water area is provided, which comprises:

[0007] The trestle comprises a main trestle arranged close to the bored pile foundation and a branch trestle, the main trestle is arranged along the bridge direction, the branch trestle is connected with the main trestle and arranged along the transverse direction on the opposite sides of the bored pile foundation, and the top surface of the branch trestle is arranged corresponding to the top of the cofferdam on the outer side of the bored pile foundation;

[0008] The connecting platform comprises a bottom module and a top module, the length of the bottom module is less than half of the length of the inside of the cofferdam, the bottom modules are arranged along the bridge direction and abut each other, a guide hole is symmetrically provided on each bottom module, the guide hole is arranged corresponding to the size and interval of two adjacent bored piles in the transverse direction of the bridge, an anchor rod is connected to the bottom of each bottom module, a top module is detachably connected between the top of the bottom module close to the trestle and the top of the corresponding side of the trestle, and the top surface of the joint between the top module and the adjacent trestle and the joint between the top module and the adjacent bottom module is inclined and transitioned.

[0009] Preferably, in the transverse direction of the bridge, the length of the top module is less than the length of the bottom module, a limiting hole is provided at the top corner on both sides of the top module beyond the top module, a limiting rod is detachably connected in the limiting hole, and the distance between the two limiting rods is equal to the length of the top module.

[0010] Preferably, on two opposite sides of adjacent bottom modules, a spherical protrusion is connected along the length direction at intervals on one side, a spherical groove is provided on the other side corresponding to a row of spherical protrusions, and when the spherical protrusion is inserted into the bottom of the spherical groove, a gap is formed between the adjacent bottom modules, a buffer rubber strip is embedded in the gap, a pin shaft is symmetrically provided between the outer edges on the same side of the adjacent bottom modules, a connecting rod is commonly sleeved on a pair of pin shafts, two pin holes are symmetrically provided on the connecting rod, the size of the pin hole is matched with the size of the pin shaft, and the distance between the two pin holes is equal to the distance between the pair of pin shafts.

[0011] Preferably, guardrails are arranged on both sides of the main trestle and the trestle at positions not connected to the top module.

[0012] Preferably, a vertical rod is arranged on both sides of the top module, a buckle ring is connected to the outside of both sides of the top module, and the buckle ring is detachably buckled on the corresponding height position of the vertical rod on the corresponding side.

[0013] Preferably, a groove is arranged on the bottom of the top module corresponding to the top of the cofferdam in the transverse direction of the bridge, the width of the groove is greater than the thickness of the side of the cofferdam, a rubber layer is connected to the bottom of the groove, and the lower surface of the rubber layer abuts against the corresponding position of the top of the cofferdam.

[0014] The utility model discloses at least following beneficial effects: the utility model discloses a platform for bridge bored pile foundation construction in high flow rate shallow open water area, including main trestle, branch trestle, top module, bottom module, after the backfilling in cofferdam, along the bridge direction lap joint, form the even construction platform, the drilling machine can be moved or hoisted to the bottom module on the main trestle and carry out the drilling construction, is favorable to guarantee the drilling machine construction position stable, avoids the unevenness of the earth body itself, the uneven density influences the construction process, the setting hole position of bottom module corresponding the bored pile is provided with the guide hole, and the guide hole is with the same center as the hole to be drilled, can be used as the guide structure when the drilling machine drills, improves the drilling construction efficiency, lays the top module on the earth platform and lap joint branch trestle, can relatively reduce the occupation river flood discharge section, is favorable to the water body flood discharge and reduces the construction flood risk, need not like traditional construction process sets up the steel platform, and the temporary facility investment is less, and the resource utilization rate is higher, saves the construction period.

[0015] Other advantages, objects and features of the present utility model will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overhead structure diagram of the utility model installation at cofferdam,

[0017] Figure 2 It is the side structure diagram of the utility model installation at cofferdam,

[0018] Figure 3 It is the side structure diagram of one bottom module and one top module connection of the utility model.

[0019] Description of the Drawings: 1, main trestle, 2, branch trestle, 3, cofferdam, 4, bored pile, 5, bottom module, 6, top module, 7, guide hole, 8, anchor rod, 9, limit rod, 10, spherical lug, 11, buffer rubber strip, 12, pin shaft, 13, connecting rod, 14, guardrail, 15, stand rod, 16, buckle, 17, notch, 18, rubber layer, 19, earth platform. DETAILED DESCRIPTION

[0020] The utility model will be further explained in detail in conjunction with the drawings, so that the person skilled in the art can implement according to the description text.

[0021] In the description of this utility model, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figure 1 , Figure 2 , Figure 3 As shown, the platform for bridge bored pile foundation construction in shallow open water with high flow velocity of this utility model includes:

[0023] The trestle bridge includes a main trestle bridge 1 and a branch trestle bridge 2 located near the foundation of the bored pile 4. The main trestle bridge 1 is set along the longitudinal direction of the bridge, and the branch trestle bridge 2 is connected to the main trestle bridge 1 and is set along the transverse direction on opposite sides of the foundation of the bored pile 4. The top surface of the branch trestle bridge 2 is set on the top of the cofferdam 3 outside the foundation of the bored pile 4.

[0024] The connecting platform includes a bottom module 5 and a top module 6. The length of the bottom module 5 is less than half the length of the inner side of the cofferdam 3. The bottom modules 5 are arranged along the bridge direction and adjacent bottom modules 5 abut against each other. Each bottom module 5 has a symmetrical through-hole 7. The guide holes 7 are set according to the size and spacing of two adjacent bored piles 4 in the transverse direction of the bridge. An anchor rod 8 is connected downward to the bottom of each bottom module 5. A top module 6 can be detachably overlapped between the top of the bottom module 5 near the support bridge 2 and the top of the support bridge 2 on the corresponding side. The top surface of the overlap between the top module 6 and the adjacent support bridge 2, and between the top module 6 and the adjacent bottom module 5, is inclined and transitional.

[0025] by Figure 1 The left-right direction is the longitudinal direction of the bridge, and the up-down direction is the transverse direction. Based on the hydrogeological data of the bridge site and the needs of bridge construction, the trestle bridges were designed and constructed. The main trestle bridge 1 and the auxiliary trestle bridge 2 are steel trestle bridges. During construction, the main traffic trestle bridge 1 and the auxiliary trestle bridge 2 beside the piers were erected first. Then, the interlocking steel sheet pile cofferdam 3 was constructed. Afterward, backfill material was added inside the cofferdam 3. Once the backfill material approached the top of the cofferdam 3, [further details are needed]. Figures 1-3 As shown, bottom modules 5 and top modules 6 are laid between the support bridge 2 on both sides and the top of the fill material inside the cofferdam 3. Initially, one bottom module 5 and one top module 6 can be set, and then a total of such modules can be set along the bridge direction. Figures 1-3The three bottom modules 5 and two top modules 6 shown are first aligned to set the pile hole, the anchor rod 8 is deep into the filling soil body, forming a flat platform surface, then the left top module 6 is set up, since the cofferdam 3 is a small distance from the support trestle 2, a transition platform surface is formed by setting the top module 6, the main trestle 1, the support trestle 2, the top module 6, and the top surface of the bottom module 5 are connected, and the whole constitutes a platform for the movement or placement of the construction equipment, which is convenient for the construction of the bored pile 4, the drilling machine can be moved or hoisted from the main trestle 1 to the bottom module 5 for drilling construction, which is conducive to ensuring the stability of the drilling machine construction position, avoiding the influence of the unevenness and uneven density of the soil body on the construction process, the guide hole 7 is concentric with the hole to be drilled and can be used as a guide structure during drilling construction, improving the drilling construction efficiency, at the same time, after the soil is filled in the cofferdam 3 to the height close to the top, a preliminary soil platform 19 is formed, the top module 6 is laid on the soil platform 19, and the top module 6 overlaps the support trestle 2, which can relatively reduce the occupation of the river flood discharge section, is conducive to the flood discharge of the water body and reduces the construction flood risk, and after the filling soil is removed, the cushion and the pile cap can be constructed in the cofferdam 3, without the need to set up a steel platform as in the traditional construction process, the temporary facilities are less invested and the resource utilization rate is higher, and the construction period is saved.

[0026] In another technical solution, as shown in Figures 1-3 In the transverse bridge direction, the length of the top module 6 is less than the length of the bottom module 5, and a limiting hole is formed at each of the two sides near the top corner of the bottom module 5 beyond the top module 6, and a vertically arranged limiting rod 9 is detachably connected in the limiting hole, and the distance between the two limiting rods 9 is equal to the length of the top module 6.

[0027] The limiting rod 9 and the limiting hole can be bolted, and the two limiting rods 9 limit the top module 6 in the transverse bridge direction.

[0028] In another technical solution, as shown in Figures 1-3 On two opposite sides of adjacent bottom modules 5, a spherical protrusion 10 is connected along the length direction at intervals on one side, and a row of spherical grooves is formed on the other side corresponding to the row of spherical protrusions 10, and when the spherical protrusion 10 is inserted into the bottom of the spherical groove, a gap is formed between the adjacent bottom modules 5, a buffer rubber strip 11 is embedded in the gap, and a pin shaft 12 is symmetrically arranged between the outer side edges on the same side of the adjacent bottom modules 5, a connecting rod 13 is commonly sleeved on the pair of pin shafts 12, two pin holes are symmetrically formed on the connecting rod 13, and the size of the pin hole and the pin shaft 12 is matched and the distance between the two pin holes is equal to the distance between the pair of pin shafts 12.

[0029] The spherical protrusion 10 is abutted in the spherical groove, the gap is provided and filled with the buffer rubber strip 11 to offset the force between the bottom modules 5, ensure the safety of the structure, and keep the surface of the whole bottom module 5 flat, as shown in Figures 1-3As shown in the left and right direction, the adjacent bottom modules 5 are temporarily locked and connected through the pin shaft 12 and the connecting rod 13, and the cylindrical pin shaft 12 and the connecting rod 13 can adapt to the change of the circumferential force.

[0030] In another technical scheme, as shown in the figure, Figures 1-2 As shown, the two sides of the main bridge 1 and the branch bridge 2 are provided with guardrails 14 at the positions not overlapping the top module 6, which provides protection for the movement and equipment on the bridge.

[0031] In another technical scheme, as shown in the figure, Figures 1-3 As shown, the guardrails 14 are provided with vertical rods 15 on the two sides of the top module 6, and the two sides of the top module 6 are connected with buckle rings 16, which are detachably buckled at the corresponding height positions on the corresponding vertical rods 15. By setting the buckle ring 16, such as a clamping structure with an opening, it only needs to be temporarily connected and fixed with the vertical rod 15, and the top module 6 is temporarily fixed on one side of the branch bridge 2, which improves the stability of the top module 6 when supporting the movement.

[0032] In another technical scheme, as shown in the figure, Figures 2-3 As shown, the bottom of the top module 6 is provided with a clamping groove 17 upward along the transverse bridge direction corresponding to the top of the cofferdam 3, the width of the clamping groove 17 is greater than the thickness of the side of the cofferdam 3, and the bottom of the clamping groove 17 is connected with a rubber layer 18, the lower surface of the rubber layer 18 abuts with the corresponding position of the top of the cofferdam 3, which provides a certain support for the top module 6 on the top of the cofferdam 3, and the force is buffered through the rubber layer 18, avoiding the direct wear of the top module 6 and the top of the cofferdam 3, and improving the anti-skid effect.

[0033] Although the embodiments of the present application have been disclosed as above, it is not limited to the application listed in the specification and the embodiments, and it can be fully applied to various fields suitable for the present application. For those skilled in the art, other modifications can be easily realized, therefore the present application is not limited to specific details and the drawings shown and described herein.

Claims

1. A platform for bridge bored pile foundation construction in large flow rate shallow open water, characterized by, The utility model relates to a construction method of a cofferdam, and relates to a cofferdam construction method and a cofferdam. The utility model relates to a construction method of a cofferdam, and relates to a cofferdam construction method and a cofferdam. In the transverse bridge direction, the length of the top module is less than the length of the bottom module, and the bottom module is provided with a limiting hole near the top corner on both sides of the top module, and a limiting rod is detachably connected in the limiting hole in the vertical direction; the distance between the limiting rods on both sides is equal to the length of the top module.

2. The platform for bridge pile foundation construction in high flow rate shallow open water area according to claim 1, characterized in that, On one side of the two opposite sides of the adjacent bottom modules, a spherical lug is connected in the length direction, and on the other side, a spherical groove is provided corresponding to a row of spherical lugs; when the spherical lug is inserted into the bottom of the spherical groove, a gap is formed between the adjacent bottom modules, and a buffer rubber strip is embedded in the gap; a pin shaft is symmetrically arranged between the outer side edges on the same side of the adjacent bottom modules; a connecting rod is jointly arranged on the pair of pin shafts; two pin holes are symmetrically provided on the connecting rod; the size of the pin holes is matched with the size of the pin shafts, and the distance between the two pin holes is equal to the distance between the pair of pin shafts.

3. The platform for bridge pile foundation construction in high flow velocity shallow open water area according to claim 1, characterized in that, Guardrails are arranged on both sides of the main trestle and the branch trestle at positions where the top modules are not connected.

4. The platform for bridge pile foundation construction in high flow velocity shallow open water area according to claim 1, characterized in that, The guardrails are provided with stand rods on both sides of the top modules, and the top modules are outwardly connected with buckling rings which are detachably buckled on the corresponding height positions of the stand rods on the corresponding sides.

5. The platform for bridge pile foundation construction in high flow rate shallow open water area according to claim 4, characterized in that, The bottom of the top module is upwardly provided with a clamping groove corresponding to the top of the cofferdam in the transverse bridge direction, the width of the clamping groove is greater than the thickness of the side of the cofferdam, and a rubber layer is connected to the bottom of the clamping groove, and the lower surface of the rubber layer abuts against the corresponding position of the top of the cofferdam.

6. The platform for bridge pile foundation construction in high flow velocity shallow open water area according to claim 1, characterized in that, ​

Images