Method for constructing trestle using ship for auxiliary construction

Abstract

The present application discloses a trestle construction method using a ship for auxiliary construction, which relates to the technical field of underwater bridge construction. The construction method includes the following steps: fixing the ship on the water surface; the deck length of the ship is more than 100 m, and a first crawler crane and a second crawler crane are arranged on the deck; transporting materials to the ship; repositioning the ship to the designed position of the trestle; using the first crawler crane to cooperate with a hydraulic impact hammer to lower and drive steel pipe piles; lifting the guide frame to a first predetermined height; using the first crawler crane to hoist the impact drill to the temporary construction platform; lowering the guide frame to a second predetermined height; fixedly connecting the guide frame and the steel pipe piles; cutting the steel pipe piles to the designed elevation; erecting a distribution beam and a Bailey beam on the top of the steel pipe piles, installing the bridge deck and auxiliary structures; and demolishing the temporary construction platform. The trestle construction method provided in this specification can not only ensure the stability of the steel pipe piles, reduce the construction difficulty of the trestle, but also speed up the construction speed and save the construction cost.

Description

Technical Field

[0001] This specification relates to the technical field of underwater bridge construction, and particularly to a trestle construction method assisted by ships during construction. Background Art

[0002] A trestle is an important auxiliary structure for underwater bridge construction, used for transporting construction materials and allowing construction personnel to pass. The trestle usually uses steel pipe pile supports driven into the riverbed as piers. A Bailey beam is erected on the steel pipe pile supports, and a distribution beam and a bridge deck are erected on the Bailey beam.

[0003] In riverbed areas where the overburden is shallow or even non-existent and the rock strength is high, the penetration depth of the steel pipe piles into the rock is small and they cannot self-stabilize, making trestle construction difficult. Also, when constructing the trestle, a barge needs to make multiple round trips to transport materials, and an additional floating crane is required to assist in the construction, which not only slows down the construction progress but also occupies a large number of vessels. Summary of the Invention

[0004] In view of the deficiencies of the prior art, an object of this specification is to provide a trestle construction method assisted by ships during construction, which can not only ensure the stability of the steel pipe piles, reduce the difficulty of trestle construction, but also speed up the construction speed and save construction costs.

[0005] To achieve the above object, an embodiment of this specification provides a trestle construction method assisted by ships during construction, including the following steps:

[0006] Lay a gravity anchor to fix the ship on the water surface; the deck length of the ship is more than 100 m, and a first crawler crane and a second crawler crane are arranged on the deck. The maximum load of the second crawler crane is less than the maximum load of the first crawler crane, and the second crawler crane is used to assist the first crawler crane in working;

[0007] Transport materials to the ship, where the materials include a hydraulic impact hammer, two sets of guide frames, and multiple steel pipe piles; the guide frames are provided with a plurality of holes extending in the vertical direction, and a temporary construction platform is arranged at the top of the guide frames;

[0008] Reposition the ship so that one of the guide frames is located at the trestle design position;

[0009] Use the first crawler crane in cooperation with the hydraulic impact hammer to lower and drive the steel pipe piles; the steel pipe piles pass through the holes, and the top surface of the steel pipe piles is higher than the upper surface of the temporary construction platform;

[0010] Lift the guide frame to a first predetermined height and temporarily lock the guide frame and the steel pipe piles;

[0011] Use the first crawler crane to hoist an impact drill onto the temporary construction platform, and use the impact drill to carry out the anchor pile punching operation. After punching, lower the steel reinforcement cage and pour the anchor pile concrete;

[0012] Release the temporary locking of the guide frame and the steel pipe pile, and lower the guide frame to a second predetermined height; the second predetermined height is less than the first predetermined height;

[0013] Fix and connect the guide frame and the steel pipe pile;

[0014] Cut the steel pipe pile to the design elevation, and pour grouting material between the steel pipe pile and the guide frame to ensure dense filling;

[0015] Erect a distribution beam and a Bailey beam on the top of the steel pipe pile, and install the bridge deck and auxiliary structures;

[0016] Demolish the temporary construction platform.

[0017] As a preferred embodiment, the maximum load of the second crawler crane is 150t, and the maximum load of the first crawler crane is 400t.

[0018] As a preferred embodiment, the second crawler crane, the material storage area, one set of the guide frames, the first crawler crane and the other set of the guide frames are arranged in sequence along the length direction of the deck on the ship deck; the material storage area stores the trestle materials, and the trestle materials include the hydraulic impact hammer, multiple steel pipe piles, the distribution beam, the Bailey beam and the grouting equipment.

[0019] As a preferred embodiment, the second crawler crane can cooperate with the first crawler crane to turn over the steel pipe pile and transfer other trestle materials.

[0020] As a preferred embodiment, the molded depth of the ship is 6.66m, the light draft is 4.29m, the heavy draft is 4.85m, and the maximum deadweight is 9000t.

[0021] As a preferred embodiment, a working anchor is provided at each of the four corner points of the ship. The length of the working anchor is 480m, the tensile force is 25t, and the laying length is 420m.

[0022] As a preferred embodiment, in the step of repositioning the ship, when the flow velocity is less than 1.0m / s, the overall positioning error of the guide frame plane is not greater than 300mm.

[0023] As a preferred embodiment, in the step of lifting the guiding frame to the first predetermined height, if the penetration depth of the steel pipe pile meets the design requirements, a first crawler crane is used to lift the guiding frame; if the penetration depth of the steel pipe pile does not meet the design requirements, a lifting and lowering mechanism installed on the top of the steel pipe pile is used to lift the guiding frame.

[0024] As a preferred embodiment, in the step of erecting a distribution beam and a Bailey beam on the top of the steel pipe pile and installing a bridge deck and auxiliary structures, the first crawler crane is used to complete the installation of the distribution beam, the Bailey beam, the bridge deck and the auxiliary structures.

[0025] As a preferred embodiment, the guiding frame is provided with four or six of the hole positions. The guiding frame with four hole positions is integrally processed, and the guiding frame with six hole positions is processed in two parts; in the step of using the impact drill to carry out the anchor pile punching operation, for the guiding frame with four hole positions, the anchor pile punching operation is gradually completed in four rounds of circulation; for the guiding frame with six hole positions, the anchor pile punching operation is gradually completed in three rounds of circulation.

[0026] Beneficial effects:

[0027] The trestle construction method using ship-assisted construction provided by this embodiment, by setting a guiding frame with a plurality of hole positions extending in the vertical direction and a temporary construction platform at the top, the steel pipe pile passes through the hole positions and is inserted and driven. Even if the rock penetration depth of the steel pipe pile is small, the guiding frame can guide the steel pipe pile to avoid instability of the steel pipe pile; subsequently, operations such as lifting the guiding frame, punching holes with an impact drill, lowering the guiding frame, and fixedly connecting the guiding frame and the steel pipe pile are carried out in sequence, and then the construction of other structures of the trestle is completed and the temporary construction platform is removed. This trestle construction method using ship-assisted construction can greatly reduce the construction difficulty of the trestle in riverbed areas with shallow or even no overburden layer and high rock strength.

[0028] Furthermore, by setting a ship with a deck length of more than 100 m, a first crawler crane and a second crawler crane are arranged on the deck, and a hydraulic impact hammer, two sets of guiding frames and multiple steel pipe piles can also be placed on the deck. There is no need to transport materials back and forth. Subsequently, the first crawler crane and the second crawler crane can also be directly used to assist in the lowering and driving of the steel pipe pile, the hoisting of the impact drill, etc., thereby accelerating the construction speed and saving construction costs.

[0029] Referring to the following description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating the ways in which the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope thereby.

[0030] Features described and / or illustrated for one embodiment can be used in the same or similar way in one or more other embodiments, combined with features in other embodiments, or instead of features in other embodiments.

[0031] It should be emphasized that the term "comprising / including" as used herein refers to the presence of features, wholes, steps or components, but does not exclude the presence or addition of one or more other features, wholes, steps or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 It is a flowchart of the steps of a trestle construction method using a ship for auxiliary construction provided in this embodiment;

[0034] Figure 2 It is a plan layout diagram of a ship provided in this embodiment;

[0035] Figure 3 For completing Figure 1 It is a construction schematic diagram after step S30 in

[0036] Figure 4 For performing Figure 1 It is a construction schematic diagram of step S40 in

[0037] Figure 5 For performing Figure 1 It is a construction schematic diagram of step S50 in

[0038] Figure 6 For performing Figure 1 It is a construction schematic diagram of step S60 in

[0039] Figure 7 It is a plan schematic diagram of a guide frame with four hole positions and steel pipe piles inserted;

[0040] Figure 8 It is a plan schematic diagram of a guide frame with six hole positions and steel pipe piles inserted;

[0041] Figure 9 For performing Figure 1 It is a construction schematic diagram of steps S70 and S80 in

[0042] Figure 10 For performing Figure 1Construction schematic diagrams after steps S90, S100, and S110.

[0043] Description of reference numerals:

[0044] 1. Ship; 2. First crawler crane; 3. Second crawler crane; 4. Material storage area; 5. Anchor rope; 6. Guide frame; 7. Hole position; 8. Temporary construction platform; 9. Steel pipe pile; 10. Hydraulic impact hammer; 11. Seabed surface; Zi-1 to Zi-4, steel pipe piles; Z6-1 to Z6-6, steel pipe piles; 12. Percussion drill; 13. Temporary corbel; 14. Lifting and lowering mechanism; 15. First predetermined height; 16. Second predetermined height; 17. Locking structure; 18. Anchor pile; 19. Distribution beam; 20. Grout; 21. Elevation of steel pipe pile top; 22. Percussion hole forming; 23. Pouring concrete; 24. Conduit; 25. Elevation of distribution beam top. Detailed implementation manners

[0045] To enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0046] It should be noted that when an element is referred to as being "disposed on" another element, it can be directly on the other element or there can also be another intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be another intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation manner.

[0047] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the present invention herein are only for the purpose of describing specific implementation manners and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0048] Please refer to Figure 1 This application's implementation manner provides a trestle construction method using a ship 1 for auxiliary construction, including the following steps:

[0049] Step S10: Drop a gravity anchor to fix the ship 1 on the water surface.

[0050] Among them, the deck length of the ship 1 is more than 100 m, so that materials and equipment for construction can be placed, and the overtime dimensions meet the construction requirements without the need for modification. Specifically, the deck length can be 109 m, and its available length is 100 m. A first crawler crane 2 and a second crawler crane 3 are arranged on the deck. The maximum load of the second crawler crane 3 is less than that of the first crawler crane 2, and the second crawler crane 3 is used to assist the first crawler crane 2 in working.

[0051] In a preferred embodiment, the maximum load of the second crawler crane 3 can be 150 t, and the maximum load of the first crawler crane 2 can be 400 t. The main functions of the first crawler crane 2 are the barge transfer, installation and lifting of the guide frame 6, the driving of the steel pipe piles 9, and the installation of the distribution beams 19, Bailey beams, bridge decks and ancillary structures, as described in detail below. The main function of the second crawler crane 3 is to cooperate with the first crawler crane 2 to turn over the steel pipe piles 9 and transfer the materials and equipment of the trestle, as described in detail below.

[0052] Specifically, the molded depth of the ship 1 is 6.66 m, the light draft is 4.29 m, the heavy draft is 4.85 m, and the maximum deadweight is 9000 t, so that the ship 1 has strong stability.

[0053] More specifically, a working anchor is provided at each of the four corner points of the ship 1. The length of the working anchor is 480 m, the pulling force is 25 t, and the laying length is 420 m, so that the anchor system has high strength. As Figures 2 to 4 shown, the anchor rope 5 is included after the working anchor is laid. The ship 1 can also have two navigation anchors. The navigation anchors have 8 sections, each section is 27.5 m long, and the total length is 220 m. The ship 1 has strong self-navigation ability and fast load adjustment speed, and when the trestle construction method using the ship 1 for auxiliary construction is carried out, the ship 1 always maintains a head current or downstream position, and the controllability of the ship machinery is strong.

[0054] Step S20: Transport materials to the ship 1.

[0055] Among them, after step S10, the ship 1 docks at the wharf, which is convenient for carrying out step S20. The materials include a hydraulic impact hammer 10, two sets of guide frames 6 and multiple steel pipe piles 9. A plurality of hole positions 7 extending in the vertical direction are provided on the guide frame 6 for the steel pipe piles 9 to pass through. A temporary construction platform 8 is arranged at the top of the guide frame 6. The guide frame 6 and the temporary construction platform 8 at the top of the guide frame 6 can be assembled on the ship 1 at the wharf. Specifically, as Figure 7 and Figure 8 shown, the guide frame 6 is provided with four or six of the hole positions 7. The guide frame 6 with four of the hole positions 7 is integrally processed, and the guide frame 6 with six of the hole positions 7 is processed in two parts.

[0056] Specifically, as Figure 2 shown, on the deck of the ship 1, along the length direction of the deck (i.e., the horizontal direction in Figure 2 ), the second crawler crane 3, the material storage area 4, one set of the guiding frames 6, the first crawler crane 2 and the other set of the guiding frames 6 are arranged in sequence. The material storage area 4 stores the trestle materials, and the trestle materials include a hydraulic impact hammer 10, multiple steel pipe piles 9, distribution beams 19, Bailey beams and grouting equipment.

[0057] Step S30: Reposition the ship 1 so that one of the guiding frames 6 is located at the designed position of the trestle.

[0058] In step S30, the guiding frame 6 as a whole (including the temporary construction platform 8) is floated to the designed position of the trestle by the ship 1 and anchored for positioning. When the flow velocity is less than 1.0 m / s, the positioning error of the plane of the guiding frame 6 as a whole is not greater than 300 mm. After step S30 is completed, as Figure 3 shown, the left side of the designed position of this trestle is the A island side, and the right side is the B island side. The high tide level here is +3.13 m, and the low tide level is -2.47 m. The position of the seabed surface 11 is as Figures 4 to 6 , Figure 9 and Figure 10 shown.

[0059] Step S40: Use the first crawler crane 2 to cooperate with the hydraulic impact hammer 10 to lower and drive the steel pipe piles 9, as Figure 4 shown.

[0060] Among them, the steel pipe piles 9 pass through the hole positions 7. The top surface of the steel pipe piles 9 is higher than the upper surface of the temporary construction platform 8. Specifically, when the flow velocity is less than 1.0 m / s, use the first crawler crane 2 to cooperate with the hydraulic impact hammer 10 to lower and drive the steel pipe piles 9 with a diameter of 2.0 m. Complete the driving work of 4 or 6 steel pipe piles 9 in sequence.

[0061] Preferably, lower and drive the steel pipe piles 9 in a diagonal order. The diameter of the steel pipe piles 9 can be 1 - 3 meters. Preferably, the diameter of the steel pipe piles 9 is 2 meters. The steel pipe piles 9 extend in the vertical direction and the rock penetration depth of the steel pipe piles 9 is not less than 1 meter. The distance between the actual position of the steel pipe piles 9 and the ideal position extending in the vertical direction shall not be greater than 1% of the length of the steel pipe piles 9. In this embodiment, the number of the steel pipe piles 9 is preferably 4 or 6.

[0062] Step S50: Lift the guiding frame 6 to a first predetermined height 15 and temporarily lock the guiding frame 6 and the steel pipe piles 9, as Figure 5 shown.

[0063] Among them, in the step of lifting the guiding frame 6 to the first predetermined height 15, if the penetration depth of the steel pipe pile 9 meets the design requirements, the first crawler crane 2 is used to lift the guiding frame 6; if the penetration depth of the steel pipe pile 9 does not meet the design requirements, the lifting and lowering mechanism 14 installed on the top of the steel pipe pile 9 is used to lift the guiding frame 6.

[0064] Specifically, a lifting and lowering mechanism 14 can be installed on the top of the steel pipe pile 9, and the guiding frame 6 is synchronously lifted to the first predetermined height 15 by using the lifting and lowering mechanism 14. The first predetermined height 15 can be +8.00 m, that is, the top elevation of the guiding frame 6 is +8.00 m at this time. After the guiding frame 6 is lifted in place, a temporary corbel 13 as shown in Figure 6 can be welded on the steel pipe pile 9, so as to temporarily lock between the guiding frame 6 and the steel pipe pile 9. As shown in Figure 6 , the top elevation 21 of the steel pipe pile can be +11.5 m.

[0065] In step S50, lifting the guiding frame 6 to the first predetermined height 15 is for the subsequent construction of the impact drill 12. Before the guiding frame 6 is lifted, the top surface of the steel pipe pile 9 is several meters higher than the upper surface of the temporary construction platform 8, which is not convenient for the subsequent construction of the impact drill 12. Therefore, the guiding frame 6 is lifted to the first predetermined height 15 to make the top surface of the steel pipe pile 9 and the upper surface of the temporary construction platform 8 roughly flush, so as to facilitate the construction of subsequent tools such as the impact drill 12.

[0066] Step S60: Use the first crawler crane 2 to hoist an impact drill 12 onto the temporary construction platform 8, and use the impact drill 12 to perform anchor pile punching operations. After punching is completed, lower the steel reinforcement cage and pour anchor pile concrete.

[0067] Specifically, as shown in Figure 6 , the impact drill 12 punches a hole 22 in the steel pipe pile 9, and then uses a conduit 24 to pour concrete 23 to form an anchor pile 18 as shown in Figure 9 .

[0068] In one embodiment, if the penetration depth of the steel pipe pile 9 reaches the design requirements, the guiding frame 6 can be adjusted and reinforced to meet the design requirements, and the impact drill 12 goes to the bridge deck for anchor pile construction.

[0069] In another embodiment, use the first crawler crane 2 to hoist an impact drill 12 onto the temporary construction platform 8 at the top of the guiding frame 6.

[0070] Among them, in the step of using the impact drill 12 to perform anchor pile punching operations, for the guiding frame 6 provided with four hole positions 7, as shown in Figure 7As shown, the "hang three and punch one" mode is adopted, and the impact drill 12 gradually completes the punching operation of the anchor pile with a diameter of 1.8 m in four rounds of circulation; for the guide frame 6 provided with six said hole positions 7, as Figure 8 shown, the "hang four and punch two" mode is adopted, and the impact drill 12 gradually completes the punching operation of the anchor pile with a diameter of 1.8 m in three rounds of circulation.

[0071] As Figure 7 shown, the drilling cycle sequence of the impact drill 12 for the steel pipe pile 9 in the "hang three and punch one" mode is as follows:

[0072] ① Hang Zi-2, Zi-3, Zi-4, drill Zi-1, and lower the steel reinforcement cage to pour concrete;

[0073] ② Hang Zi-1, Zi-2, Zi-3, drill Zi-4, and lower the steel reinforcement cage to pour concrete;

[0074] ③ Hang Zi-1, Zi-2, Zi-4, drill Zi-3, and lower the steel reinforcement cage to pour concrete;

[0075] ④ Hang Zi-1, Zi-3, Zi-4, drill Zi-2, and lower the steel reinforcement cage to pour concrete.

[0076] Among them, i can take an integer from 1 to 5.

[0077] As Figure 8 shown, the drilling cycle sequence of the impact drill 12 for the steel pipe pile 9 in the "hang four and punch two" mode is as follows:

[0078] ① Hang Z6-2 to Z6-5, drill Z6-1 and Z6-6, and lower the steel reinforcement cage to pour concrete;

[0079] ② Hang Z6-1, Z6-2, Z6-5, Z6-6, drill Z6-3 and Z6-4, and lower the steel reinforcement cage to pour concrete;

[0080] ③ Hang Z6-1, Z6-3, Z6-4, Z6-6, drill Z6-2 and Z6-5, and lower the steel reinforcement cage to pour concrete.

[0081] Step S70: Release the temporary locking of the guide frame 6 and the steel pipe pile 9, and lower the guide frame 6 to the second predetermined height 16.

[0082] Among them, the second predetermined height 16 is less than the first predetermined height 15. The difference between the first predetermined height 15 and the second predetermined height 16 can be 2 to 4 meters. Preferably, the second predetermined height 16 can be +5.010m. Step S70 needs to be carried out after the construction of the anchor pile 18 is completed. The lifting and lowering mechanism 14 can be used to lower the top elevation of the guide frame 6 to +5.010m (weights can be added to the temporary construction platform 8 on site according to the actual situation to facilitate the lowering of the guide frame 6).

[0083] Step S80: Fix and connect the guide frame 6 and the steel pipe pile 9.

[0084] Among them, as Figure 9 shown, after the guide frame 6 is lowered in place, use the low tide period to weld the locking structure 17 as Figure 9 shown to preliminarily connect the guide frame 6 and the steel pipe pile 9 into a whole.

[0085] Step S90: Cut the steel pipe pile 9 to the design elevation, and pour grouting material 20 between the steel pipe pile 9 and the guide frame 6.

[0086] In step S90, after pouring the grouting material 20, ensure that it is filled densely. The grouting material 20 can be ordinary cement-based bridge pedestal grouting material 20.

[0087] Step S100: Erect a distribution beam 19 and a Bailey beam on the top of the steel pipe pile 9, and install the bridge deck and auxiliary structures.

[0088] In step S100, first weld the pile head structure on the top of the steel pipe pile 9, and then use the first crawler crane 2 to hoist the transverse distribution beam 19 and the Bailey beam, and install the bridge deck and auxiliary structures. As Figure 10 shown, the top elevation 25 of the distribution beam can be +7.05m. Before installing the distribution beam 19, the step of leveling the pile top can be carried out. Before installing the Bailey beam, the step of marking the pile top cross beam can be carried out.

[0089] Step S110: Remove the temporary construction platform 8.

[0090] After carrying out step S110, as Figure 10As shown, the construction of the pier structure of the trestle ZQ1# is completed. Then, the ship 1 can enter the next pile position, and repeat the above steps S10 to S110 to complete the construction of the pier structures of the trestle ZQ2# to ZQ6#. Among them, since the ship 1 can transport two sets of guide frames 6 at a time, after the construction of the pier structure of the trestle ZQ1# is completed, steps S10 and S20 can be omitted, and the construction of the pier structure of the trestle ZQ2# can directly start from step S30; similarly, after the construction of the pier structures of the trestle ZQ3# and ZQ5# is completed, steps S10 and S20 can also be omitted, and the construction of the pier structures of the trestle ZQ4# and ZQ6# can directly start from step S30.

[0091] For the trestle construction method assisted by the ship 1 provided in this embodiment, by setting the guide frame 6 provided with a plurality of holes 7 extending in the vertical direction and a temporary construction platform 8 at the top, the steel pipe pile 9 is lowered through the hole 7 and driven in. Even if the rock penetration depth of the steel pipe pile 9 is small, the guide frame 6 can guide the steel pipe pile 9 to avoid the instability of the steel pipe pile 9; subsequently, the operations of lifting the guide frame 6, punching holes with the impact drill 12, lowering the guide frame 6, and fixedly connecting the guide frame 6 and the steel pipe pile 9 are carried out in sequence, and then the construction of other structures of the trestle is completed and the temporary construction platform 8 is removed. This trestle construction method assisted by the ship 1 can greatly reduce the construction difficulty of the trestle in the riverbed area with shallow or even no overburden layer and high rock strength.

[0092] In addition, by setting the ship 1 with a deck length of more than 100m, the first crawler crane 2 and the second crawler crane 3 are arranged on the deck, and the hydraulic impact hammer 10, two sets of guide frames 6 and multiple steel pipe piles 9 can also be placed on the deck. There is no need to transport materials back and forth. Subsequently, the first crawler crane 2 and the second crawler crane 3 can directly assist in the operations such as the lowering and driving of the steel pipe pile 9 and the hoisting of the impact drill 12, so as to speed up the construction speed and save construction costs.

[0093] It should be noted that in the description of this specification, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects, and there is no sequence between them, nor can they be understood as indicating or implying relative importance. In addition, in the description of this specification, unless otherwise specified, the meaning of "multiple" is two or more.

[0094] Any numerical values recited herein include all values from the lower value to the upper value incremented by one unit therebetween, provided that there is a separation of at least two units between any lower value and any higher value. For example, if the value of the number of components or a process variable (such as temperature, pressure, time, etc.) is recited as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, it is intended thereby to disclose also explicitly values such as 15 to 85, 22 to 68, 43 to 51, 30 to 32, etc. For values less than 1, a unit is suitably considered to be 0.0001, 0.001, 0.01, 0.1. These are merely examples of what is intended to be clarified, and it is to be considered that all possible combinations of numerical values recited between the lowest value and the highest value are explicitly set forth in this specification in a similar manner.

[0095] Unless otherwise indicated, all ranges include the endpoints and all numbers therebetween. The term “about” or “approximate” used in connection with a range is applicable to both endpoints of the range. Thus, “about 20 to 30” is intended to cover “about 20 to about 30”, including at least the specified endpoints.

[0096] All articles and references, including patent applications and publications, are incorporated herein by reference for various purposes. The term “consisting essentially of” in describing a combination shall include the identified elements, ingredients, components or steps as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms “comprising” or “including” to describe the combinations of elements, ingredients, components or steps herein also contemplates embodiments consisting essentially of these elements, ingredients, components or steps. By using the term “may” herein, it is intended to indicate that any of the attributes so-described as “may” be included are optional.

[0097] A plurality of elements, ingredients, components or steps can be provided by a single integrated element, ingredient, component or step. Alternatively, a single integrated element, ingredient, component or step can be separated into discrete plural elements, ingredients, components or steps. The disclosure of the articles “a” or “an” used to describe elements, ingredients, components or steps is not intended to exclude other elements, ingredients, components or steps.

[0098] It should be understood that the above description is for illustrative purposes and not for limitation. Upon reading the above description, many embodiments and many applications other than the provided examples will be apparent to those skilled in the art. Therefore, the scope of this teaching should not be determined with reference to the above description, but should be determined with reference to the appended claims and the full scope of equivalents to which those claims are entitled. For the sake of completeness, all articles and references, including patent applications and published disclosures, are incorporated herein by reference. Omission of any aspect of the subject matter disclosed herein from the foregoing claims is not intended to abandon such subject matter, nor should it be considered that the inventor has not considered such subject matter to be part of the disclosed inventive subject matter.

Claims

1. A construction method of a trestle using ship-assisted construction, characterized in that, The steps include: Laying a gravity anchor to fix the ship on the water surface; the deck length of the ship is more than 100m, and a first crawler crane and a second crawler crane are arranged on the deck. The maximum load of the second crawler crane is less than that of the first crawler crane, and the second crawler crane is used to assist the first crawler crane in working; Transporting materials to the ship, where the materials include a hydraulic impact hammer, two sets of guide frames and multiple steel pipe piles; multiple holes extending in the vertical direction are provided on the guide frame, and a temporary construction platform is arranged at the top of the guide frame; Repositioning the ship so that one of the guide frames is located at the designed position of the trestle; Using the first crawler crane in cooperation with the hydraulic impact hammer to lower and drive the steel pipe pile; the steel pipe pile passes through the holes, and the top surface of the steel pipe pile is higher than the upper surface of the temporary construction platform; Lifting the guide frame to a first predetermined height and temporarily locking the guide frame and the steel pipe pile; Using the first crawler crane to hoist an impact drill to the temporary construction platform, and using the impact drill to carry out the anchor pile punching operation. After punching is completed, lowering the steel reinforcement cage and pouring the anchor pile concrete; Releasing the temporary lock of the guide frame and the steel pipe pile, and lowering the guide frame to a second predetermined height; the second predetermined height is less than the first predetermined height; Fixing and connecting the guide frame and the steel pipe pile; Cutting the steel pipe pile to the designed elevation, and pouring grouting material between the steel pipe pile and the guide frame to ensure dense filling; Erecting a distribution beam and a Bailey beam on the top of the steel pipe pile, and installing the bridge deck and ancillary structures; Removing the temporary construction platform.

2. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, The maximum load of the second crawler crane is 150t, and the maximum load of the first crawler crane is 400t.

3. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, The second crawler crane, a material storage area, one set of the guide frames, the first crawler crane and the other set of the guide frames are arranged in sequence along the length direction of the deck on the ship deck; the material storage area stores trestle materials, and the trestle materials include the hydraulic impact hammer, multiple steel pipe piles, the distribution beam, the Bailey beam and grouting equipment.

4. The construction method of a trestle using ship-assisted construction according to claim 3, characterized in that, The second crawler crane can cooperate with the first crawler crane to turn over the steel pipe pile and transfer other trestle materials.

5. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, The molded depth of the ship is 6.66m, the light draft is 4.29m, the heavy draft is 4.85m, and the maximum deadweight is 9000t.

6. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, Each of the four corner points of the ship is provided with a working anchor. The length of the working anchor is 480m, the pulling force is 25t, and the laying length is 420m.

7. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, In the step of repositioning the ship, when the flow velocity is less than 1.0m / s, the overall positioning error of the guide frame plane is not more than 300mm.

8. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, In the step of lifting the guide frame to the first predetermined height, if the penetration depth of the steel pipe pile meets the design requirements, the first crawler crane is used to lift the guide frame; if the penetration depth of the steel pipe pile does not meet the design requirements, the lifting and lowering mechanism installed on the top of the steel pipe pile is used to lift the guide frame.

9. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, In the step of erecting the distribution beam and the Bailey beam at the top of the steel pipe pile and installing the bridge deck and the accessory structure, the first crawler crane is used to complete the installation of the distribution beam, the Bailey beam, the bridge deck and the accessory structure.

10. The construction method of a trestle using ship-assisted construction according to claim 1, characterized in that, The guide frame is provided with four or six of the hole positions. The guide frame with four of the hole positions is integrally processed, and the guide frame with six of the hole positions is processed in two parts. In the step of using the impact drill for the anchor pile punching operation, for the guide frame with four of the hole positions, the anchor pile punching operation is gradually completed in four rounds of cycles; for the guide frame with six of the hole positions, the anchor pile punching operation is gradually completed in three rounds of cycles.

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