Wharf crane for steel-concrete composite beam construction and steel-concrete composite beam hoisting method

Abstract

The invention relates to a wharf crane for steel-concrete composite beam construction and a steel-concrete composite beam hoisting method. A stand column structure and a tension-compression type rear anchor structure are sequentially arranged on the side, facing the shoreside, of the bottom of a truss in the upward direction of a longitudinal bridge at intervals. The stand column structure and the tension-compression type rear anchor structure are erected on the shore side. The vertical rod is installed on the top of the truss and located over the stand column structure. Diagonal draw bar structures connected with the trusses are connected to the two upward sides of the vertical rods on the longitudinal bridge respectively; the first hoisting truss vehicle and the second hoisting truss vehicle are arranged on the truss and move in the longitudinal bridge direction; a tension-compression type rear anchor structure is adopted, so that the structure stress is clear, and the risk that the joint is damaged due to tension is reduced; the triangular stable structure formed by the cooperation of the vertical rods, the trusses and the diagonal draw bars enhances the structural strength and stability of the trusses when the trusses bear stress, the stress is uniform, the bearing capacity is improved, and the hoisting device can hoist large-tonnage steel box girders and steel-concrete composite girders. And the influence on waterway transportation caused by long-term occupation of a channel in large floating crane construction is avoided.

Description

Technical Field

[0001] The present application relates to the field of bridge construction and equipment manufacturing, and in particular to a dock crane for steel-concrete composite beam construction and a steel-concrete composite beam hoisting method. Background Art

[0002] With the continuous development of bridge technology, steel-concrete composite beam bridges have been used more and more widely. Steel-concrete composite beams have the advantages of both steel and concrete structures, which can reduce the deadweight of the structure and increase the rigidity and stability of the structure. Therefore, they have become one of the main development directions of long-span bridges in the future.

[0003] There are many types of steel-concrete composite beam cross-sections, the most common of which is a composite beam structure formed by steel box beams and precast concrete. Conventional construction often uses the idea of ​​assembling them in a shipyard, transporting them to the bridge site by barges, and then erecting them using a large floating crane. However, large floating cranes are difficult to enter inland river bridges, and inland waterways are narrow. Long-term occupation of the waterway by large floating crane construction will have a significant impact on water transportation.

[0004] When lifting large-tonnage steel box girders and steel-concrete composite beams, traditional outrigger cranes have limited lifting load and lifting distance, which makes it difficult to lift the large-tonnage steel box girders or steel-concrete composite beams required for large bridges to the target location.

[0005] Therefore, for the construction of large inland river bridges, there is an urgent need for a more adaptable equipment and method with less impact on the river channel to carry out the construction of steel-concrete composite beams. Summary of the invention

[0006] The embodiments of the present application provide a dock crane for steel-concrete composite beam construction and a steel-concrete composite beam lifting method to solve the problems in the related art of narrow inland waterways, difficult entry of large floating cranes into inland bridges, and weak load-bearing capacity of traditional cranes in the construction of large inland bridges.

[0007] In a first aspect, a dock crane for steel-concrete composite beam construction is provided, comprising:

[0008] The truss has a bottom on the side of the longitudinal bridge facing upward toward the shore, with column structures and tension-compression type rear anchor structures arranged in sequence; the column structures and tension-compression type rear anchor structures are erected on the shore;

[0009] A vertical rod is installed on the top of the truss and is located directly above the column structure; the vertical rod is connected to a diagonal rod structure connected to the truss on both sides of the longitudinal bridge upward;

[0010] The first hoisting truss vehicle is arranged on the truss and moves along the longitudinal direction of the bridge.

[0011] In some embodiments, a connecting plate is provided on the top of the vertical rod, and a plurality of connecting holes are provided on the connecting plate;

[0012] The truss is provided with a plurality of connection points spaced apart on both sides of the vertical bridge;

[0013] The inclined rod structure comprises a plurality of inclined rods, one end of each inclined rod is connected to a corresponding connection hole, and the other end is connected to a connection point; and the lengths of each inclined rod are unequal.

[0014] In some embodiments, the oblique rod includes a plurality of segments, and two adjacent segments are connected by a pin.

[0015] In some embodiments, the truss comprises:

[0016] two horizontal bars spaced apart in the transverse direction of the bridge and extending in the longitudinal direction of the bridge;

[0017] A flat link extending in the transverse direction of the bridge and connected to a horizontal rod at each end to form a rectangular frame structure;

[0018] There are two vertical bars, and the two vertical bar cross bridges are arranged upwardly at intervals and connected to the corresponding horizontal bars. A cross-connection structure is connected between the two vertical bars.

[0019] In some embodiments, a connecting support is provided at the bottom of the horizontal rod, and has a designed length in the longitudinal bridge direction;

[0020] The column structure comprises:

[0021] Two second foundation seats are arranged at intervals upward from the cross bridge and are used to be arranged in a foundation pit on the shore;

[0022] The column steel pipe frame is installed on the corresponding second foundation seat; the top of the column steel pipe frame is provided with two column longitudinal and transverse beams arranged at intervals along the longitudinal bridge direction; the top of the column longitudinal and transverse beams is connected to the bottom of the connecting support.

[0023] In some embodiments, the first hoisting gantry vehicle includes a truss beam, a hoisting mechanism, a wire rope, a sling and a track wheel;

[0024] The truss beam is arranged along the transverse direction of the bridge, and both ends thereof are slidably connected to the truss through track wheels;

[0025] The hoisting mechanism is installed on the truss and is connected to the sling via a steel wire rope.

[0026] In some embodiments, a second hoisting truss vehicle is further included which is arranged on the truss, and the structure of the second hoisting truss vehicle is the same as that of the first hoisting truss vehicle.

[0027] In some embodiments, the tension-compression rear anchor structure comprises:

[0028] Two support pipe assemblies are spaced apart in the transverse direction of the bridge; each support pipe assembly is provided with a column top crossbeam at the top;

[0029] A distribution beam, which is located above the column top cross beam, and a clamping space is provided between the two, and the clamping space clamps the truss;

[0030] A first anchoring structure, which is anchored and connected to the distribution beam, the truss and the column top beam;

[0031] A first foundation seat, which is used to be installed in a foundation pit on the shore, and the bottom of the support pipe assembly is provided with reinforcing steel bars connected thereto;

[0032] A second anchoring structure, which is anchored and connected to the bottom of the support pipe assembly and the first base seat;

[0033] An anchor beam is installed at the bottom of the support pipe assembly and is anchored to the first foundation seat through a prestressed anchor cable; the prestressed anchor cable passes through the anchor beam and the first foundation seat in sequence downward and is used to anchor to the rock stratum in the foundation pit.

[0034] In some embodiments, the first anchoring structure includes an anchor rod, which is disposed on the distribution beam and passes downward through the distribution beam to be anchored to the column top cross beam;

[0035] The second anchoring structure includes an anchor beam and a prestressed anchor cable. The anchor beam is installed at the bottom of the support pipe assembly and is anchored to the first foundation seat through the prestressed anchor cable. The prestressed anchor cable passes through the anchor beam and the first foundation seat downward in sequence and is used to anchor to the rock strata in the foundation pit.

[0036] In a second aspect, a method for hoisting a steel-concrete composite beam is provided, comprising the following steps:

[0037] The wharf crane for the construction of the steel-concrete composite beam as described in any one of claims 1 to 4 is installed on the shore; the wharf crane for the construction of the steel-concrete composite beam comprises a second hoisting gantry and a first hoisting gantry arranged in sequence upward from the longitudinal bridge;

[0038] Transport the steel beam to the bottom of the truss by water, then move the first hoisting truss vehicle to the top of the steel beam, then connect the first hoisting truss vehicle to the steel beam, and lift it to the beam storage position;

[0039] Connecting the second hoisting gantry truck to the prefabricated bridge deck located on the shore, and then using the second hoisting gantry truck to move and lower the prefabricated bridge deck onto the steel beam;

[0040] Casting wet joints between steel beams and precast bridge decks to form steel-concrete composite beams;

[0041] The first hoisting gantry crane is used to hoist the steel-concrete composite beam to the installation position.

[0042] The beneficial effects of the technical solution provided by this application include:

[0043] The embodiment of the present application provides a dock crane for steel-concrete composite beam construction and a steel-concrete composite beam lifting method. Since the bottom of the truss is provided with a column structure and a tension-compression rear anchor structure in sequence at intervals on the side of the longitudinal bridge facing the shore upward; the column structure and the tension-compression rear anchor structure are erected on the shore; the vertical rod is installed on the top of the truss and is located directly above the column structure; the vertical rod is connected to the inclined rod structure connected to the truss on both sides of the longitudinal bridge upward; the first lifting truss vehicle is arranged on the truss and moves along the longitudinal bridge; the tension-compression rear anchor structure is adopted, so that the structure is clearly stressed and the risk of tensile damage at the connection is reduced; and the triangular stable structure formed by the cooperation of the vertical rod, the truss and the inclined rod structure strengthens the structural strength and stability of the truss when bearing loads and stresses, and the stress is evenly applied, thereby improving its bearing capacity, and large-tonnage steel box girders and steel-concrete composite beams can be lifted. In addition, the device is arranged on the shore, which avoids the large impact of large floating crane construction occupying the waterway for a long time on waterway transportation.

[0044] When using this device, the steel beam is first lifted from the water surface by the first lifting gantry truck, and then the prefabricated bridge deck is lifted from the shore onto the steel beam by the second lifting gantry truck to cast wet joints to form a steel-concrete composite beam. This can achieve on-site bonding of concrete bridge decks and on-site casting of wet joints, thereby improving the quality of concrete engineering, improving construction efficiency and reducing project management costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 A front view of a dock crane for the construction of a steel-concrete composite beam provided in an embodiment of the present application;

[0047] Figure 2 A schematic diagram of the structure of a truss provided in an embodiment of the present application;

[0048] Figure 3 A schematic diagram of the structure of the column provided in the embodiment of the present application;

[0049] Figure 4 A schematic diagram of the structure of the tension-compression rear anchor structure provided in the embodiment of the present application

[0050] Figure 5 A schematic structural diagram of a first lifting gantry vehicle provided in an embodiment of the present application.

[0051] In the figure: 1. truss; 101. horizontal rod; 102. vertical rod; 103. diagonal rod; 104. parallel connection; 105. cross connection structure; 106. connecting plate; 107. connecting support; 2. column structure; 201. second foundation seat; 202. column steel pipe frame; 203. column longitudinal and transverse beams; 3. tension-compression rear anchor structure; 301. prestressed anchor cable; 302. first foundation seat; 303. anchor beam; 304. support pipe assembly; 305. column top cross beam; 306. anchor rod; 307. distribution beam; 4. first hoisting truss car; 401. truss beam; 402. hoisting mechanism; 403. steel wire rope; 404. hoisting device; 405. track wheel; 5. second hoisting truss car; 601. steel beam; 602. prefabricated bridge deck. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0053] It should be understood that:

[0054] There are currently the following factors to be resolved:

[0055] Factor 1: There are many types of steel-concrete composite beam cross-sections, the most common of which is the bridge deck structure formed by steel box beams and precast concrete. Conventional construction mostly adopts the idea of ​​assembling them in the shipyard and then transporting them to the bridge site by barges, and then erecting them using large floating cranes. However, large floating cranes are difficult to enter inland bridges, and inland waterways are narrow. Long-term occupation of the waterway by large floating crane construction will have a great impact on water transportation.

[0056] Factor 2: Traditional outrigger cranes have limited lifting capacity and lifting distance when lifting large-tonnage steel box girders and steel-concrete composite beams, making it difficult to lift the steel box girders and precast concrete bridge deck structures to the target location.

[0057] The embodiments of the present application provide a dock crane for the construction of steel-concrete composite beams and a method for lifting steel-concrete composite beams to solve the problems in the related art of narrow inland waterways, difficult entry of large floating cranes into inland bridges, and weak load-bearing capacity of traditional cranes in the construction of large inland bridges.

[0058] See also Figure 1 , a wharf crane for steel-concrete composite beam construction, comprising:

[0059] The truss 1 has a bottom on the side of the longitudinal bridge facing upward toward the shore, and is provided with a column structure 2 and a tension-compression type rear anchor structure 3 in sequence; the column structure 2 and the tension-compression type rear anchor structure 3 are used to be erected on the shore;

[0060] The vertical rod 102 is installed on the top of the truss 1 and is located directly above the column structure 2; the vertical rod 102 is connected to the inclined rod structure connected to the truss 1 on both sides of the longitudinal bridge upward;

[0061] The first hoisting gantry vehicle 4 is arranged on the truss 1 and moves along the longitudinal direction of the bridge.

[0062] The tension-compression rear anchor structure 3 is adopted to make the structural force clear, reducing the risk of tensile damage at the connection between the truss 1 and the tension-compression rear anchor structure 3; and the cooperation of the vertical rod 102, the truss 1 and the inclined rod structure forms a triangular stable structure, which strengthens the structural strength and stability of the truss 1 when bearing loads and forces, and evenly bears the force, thereby improving its bearing capacity, and can hoist large-tonnage steel box girders and steel-concrete combined beams. In addition, the device is arranged on the shore, which avoids the long-term occupation of the waterway by large floating crane construction, which has a great impact on water transportation.

[0063] When using this device, the steel beam 601 is first lifted from the water surface, and then the prefabricated bridge deck 602 is lifted from the shore onto the steel beam 601, and the wet joints are poured to form a steel-concrete composite beam. This can achieve on-site bonding of the concrete bridge deck and on-site pouring of the wet joints, thereby improving the quality of the concrete project, improving construction efficiency and reducing project management costs.

[0064] In some preferred embodiments, the arrangement of the triangular stable structure is described in detail:

[0065] A connecting plate 106 is provided on the top of the vertical rod 102, and a plurality of connecting holes are provided on the connecting plate 106;

[0066] On the truss 1, multiple spaced connection points are provided on both sides of the vertical bridge of the vertical rod 102 to facilitate disassembly, transportation and storage;

[0067] The inclined rod structure includes a plurality of inclined rods 103, one end of each inclined rod 103 is connected to a corresponding connection hole, and the other end is connected to a connection point; the lengths of each inclined rod 103 are unequal to facilitate disassembly, transportation, and storage.

[0068] Through the above arrangement, multiple stable triangular structures can be formed in the longitudinal direction of the bridge to strengthen the overall structure of the truss 1, and the tension-compression rear anchor structure 3 can resist the pulling force during lifting.

[0069] In addition, the diagonal rod 103 includes a plurality of segments, and two adjacent segments are connected by a pin. The advantage of such a configuration is that no matter how long the diagonal rod 103 is, it can be assembled, which is convenient for construction and installation.

[0070] For further reference, Figure 1 and Figure 2 , introduce the specific structure of truss 1, truss 1 includes:

[0071] Two horizontal rods 101, which are spaced apart in the transverse direction of the bridge and extend in the longitudinal direction of the bridge;

[0072] A flat link 104 extending in the transverse direction and having two ends connected to a horizontal rod 101 to form a rectangular frame structure;

[0073] There are two vertical rods 102, which are arranged at intervals upwardly and connected to the corresponding horizontal rods 101, and a cross-connection structure 105 is connected between the two vertical rods 102. The cross-connection structure 105 connects the two vertical rods 102 into one body, further strengthening the structural strength.

[0074] The truss 1 is used to bear the load transmitted by the second hoisting truss 5 and the first hoisting truss 4, and the second hoisting truss 5 and the first hoisting truss 4 move along the horizontal rod 101. The horizontal rod 101, the vertical rod 102, the diagonal rod 103, and the parallel rod 104 all adopt a modular steel box beam structure, and the multiple segment components of the diagonal rod 103 are connected by pins, and other components are connected by bolts. The horizontal rod 101 is connected with the vertical rod 102 and the parallel rod 104 by bolts, and the diagonal rod 103 is connected with the horizontal rod 101 and the vertical rod 102 by pins to form a stable triangular truss structure.

[0075] In some preferred embodiments, refer to the attached Figure 1 and attached Figure 3 , the column structure 2 comprises:

[0076] A connecting support 107 is provided at the bottom of the horizontal rod 101 and has a designed length in the longitudinal bridge direction;

[0077] The column structure 2 includes:

[0078] Two second foundation seats 201 are arranged spaced apart upwardly from the cross bridge and are used to be arranged in a foundation pit on the shore;

[0079] The column steel pipe frame 202 is installed on the corresponding second base 201; the top of the column steel pipe frame 202 is provided with two column longitudinal and transverse beams 203 arranged at intervals along the longitudinal bridge direction; the top of the column longitudinal and transverse beams 203 is connected to the bottom of the connecting support 107.

[0080] The above connection support 107 has a designed length in the longitudinal direction of the bridge, which can reduce local stress concentration and enhance stability. The column structure 2 is used to bear the load transmitted by the truss 1. The second foundation seat 201 is an expanded foundation, which is connected to the column steel pipe frame 202 through anchor bolts. The column steel pipe frame 202 is a lattice steel pipe column, and the components are connected by flanges. The column longitudinal and transverse beams 203 are steel box beam structures, which are fixed to the column steel pipe frame 202 by bolts, and the tops of the column longitudinal and transverse beams 203 are connected to the horizontal rod 101 through the connection support 107.

[0081] In some preferred embodiments, reference Figure 1 and Figure 4 , the tension-compression rear anchor structure 3 is described in detail:

[0082] The tension-compression rear anchor structure 3 comprises:

[0083] Two support pipe assemblies 304 are spaced apart in the transverse direction; a column top crossbeam 305 is provided on the top of each support pipe assembly 304;

[0084] The distribution beam 307 is located above the column top cross beam 305, and a clamping space is provided between the two, and the clamping space clamps the truss 1;

[0085] A first anchoring structure, which is anchored and connected to the distribution beam 307, the truss 1, the anchor rod 306 and the column top cross beam 305;

[0086] The first foundation 302 is used to be installed in a foundation pit on the shore, and the bottom of the support pipe assembly 304 is provided with reinforcing steel bars connected thereto;

[0087] The second anchoring structure is anchored and connected to the bottom of the support tube assembly 304 and the first base 302 .

[0088] The anchor beam 303 is installed at the bottom of the support pipe assembly 304 and is anchored to the first foundation seat 302 through the prestressed anchor cable 301; the prestressed anchor cable 301 passes through the anchor beam 303 and the first foundation seat 302 in sequence downward, and is used to anchor to the rock formation in the foundation pit.

[0089] The first anchoring structure includes an anchor rod 306 , which is disposed on the distribution beam 307 and passes through the distribution beam 307 and is anchored to the column top cross beam 305 in sequence downward.

[0090] The second anchoring structure includes an anchor beam 303 and a prestressed anchor cable 301. The anchor beam 303 is installed at the bottom of the support pipe assembly 304 and is anchored to the first foundation seat 302 through the prestressed anchor cable 301. The prestressed anchor cable 301 passes through the anchor beam 303 and the first foundation seat 302 downward in sequence and is used to anchor to the rock strata in the foundation pit.

[0091] Through the coordinated use of the above first anchoring structure and the first anchoring structure and other components, the risk of the leg connection being easily damaged by tension is reduced, the structure is lighter, and it is convenient for on-site installation and disassembly.

[0092] The tension-compression rear anchor structure 3 is used for the load transmitted by the truss 1. The first foundation seat 302 is an enlarged foundation, which is connected to the anchor beam 303 through embedded parts to resist the pressure received by the tension-compression rear anchor structure 3. The prestressed anchor cable 301 is fixed on the anchor beam 303 to resist the pull-out force on the tension-compression rear anchor structure 3. The support pipe assembly 304 is a lattice steel pipe column, and the components are connected by flanges and welded and fixed to the anchor beam 303 and the column top cross beam 305 in the factory. The column top cross beam 305 is a steel box beam structure, which supports the horizontal rod 101 in the middle of the span and transmits vertical pressure. The anchor rod 306 is a high-strength steel rod, which is fixed on the column top cross beam 305 and the distribution beam 307 to transmit vertical tension. The distribution beam 307 is a steel box beam structure, which is used to limit the horizontal rod 101 and transmit vertical tension.

[0093] In some preferred embodiments, refer to the attached Figure 1 , Attachment Figure 5 , the structures of the second hoisting truss vehicle 5 and the first hoisting truss vehicle 4 are described:

[0094] The first hoisting gantry vehicle 4 includes a truss beam 401, a hoisting mechanism 402, a wire rope 403, a hoisting device 404 and a track wheel 405;

[0095] The truss beam 401 is arranged along the transverse direction of the bridge, and its two ends are slidably connected to the truss 1 through track wheels 405;

[0096] The hoisting mechanism 402 is installed on the truss 401 and is connected to the sling 404 via a steel wire rope 403 .

[0097] It also includes a second lifting truss vehicle 5 arranged on the truss 1 , and the structure of the second lifting truss vehicle 5 is the same as that of the first lifting truss vehicle 4 .

[0098] The first hoisting truss 4 is used to lift the steel beam 601 and the combined steel-concrete composite beam. The truss 401 is a modular steel box beam structure, and the segment components are connected by bolts, which can allow the hoisting mechanism 402 to travel on the truss 401 to adapt to steel beams 601 of different widths. The hoisting mechanism 402 and the wire rope 403 are a lifting structure, and the wire rope 403 is retracted and released in the hoisting mechanism 402. The hoist 404 is a steel structure, which is connected to the wire rope 403 through a pulley, and the lower end is connected to the lifting point of the steel beam 601 or the steel-concrete composite beam through a pin shaft or a shackle. The track wheel 405 is a running device, which is fixed at both ends of the truss 401 and can travel back and forth on the horizontal rod 101. The second hoisting truss 5 is used to lift the prefabricated steel bridge deck 602.

[0099] The present application also provides a method for hoisting a steel-concrete composite beam, which comprises the following steps:

[0100] Step 100, installing a dock crane for steel-concrete composite beam construction on the shore; the dock crane for steel-concrete composite beam construction includes a second hoisting gantry 5 and a first hoisting gantry 4 sequentially arranged upward from the longitudinal bridge;

[0101] Step 101, transport the steel beam 601 to the bottom of the truss 1 by water, then move the first hoisting truss vehicle 4 to the top of the steel beam 601, then connect the first hoisting truss vehicle 4 and the steel beam 601, and lift them to the beam storage position;

[0102] Step 102: Connect the second hoisting gantry 5 to the prefabricated bridge deck 602 located on the shore, and then use the second hoisting gantry 5 to move the prefabricated bridge deck 602 and lower it onto the steel beam 601;

[0103] Step 103, casting the wet joint between the steel beam 601 and the prefabricated bridge deck 602 to form a steel-concrete composite beam;

[0104] Step 104: hoist the steel-concrete composite beam to the installation position by using the first hoisting gantry vehicle 4. Of course, the composite beam can also be hoisted onto the ship by the crane again and transported to other locations for erection or storage.

[0105] The above demonstrates that the crane can be used for lifting and lowering large-section main beams weighing more than 500 tons, and is a large special equipment. It is suitable for bridge construction in complex waters such as busy waterways, narrow waterways, and large water level changes, especially construction areas that large floating cranes cannot enter. It can realize on-site bonding of concrete bridge decks and on-site pouring of wet joints, which improves the quality of concrete projects, increases construction efficiency, and reduces project management costs.

[0106] In addition, compared with the traditional outrigger crane, the innovative tension-compression rear anchor structure optimizes the heavier rear outrigger structure and reduces the risk of tension damage at the rear outrigger connection. The structure is lighter and easier to install and disassemble on site. The large cantilever crane has a large gantry crane activity range, which can overcome the common adverse geological conditions in mountain canyons such as shallows, faults, and inclined rock surfaces, and has high adaptability and strong turnover.

[0107] The metal structure of the crane is light, uses little steel, and is easy to modify. All components are prefabricated structures with small component sizes, making them easy to install, disassemble and transport.

[0108] Finally, it should be noted that this crane can not only be used for the construction of steel-concrete composite beams, but can also be used in bridge construction fields such as various types of steel beam construction, prefabricated beam construction, and other dock operations that require large-tonnage cranes.

[0109] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0110] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0111] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A dock crane for steel-concrete composite beam construction, characterized in that: It includes: The truss (1) has a column structure (2) and a tension-compression type rear anchor structure (3) arranged in sequence at intervals on the bottom of the truss on the side of the longitudinal bridge facing upward toward the shore; the column structure (2) and the tension-compression type rear anchor structure (3) are erected on the shore; A vertical rod (102) is installed on the top of the truss (1) and is located directly above the column structure (2); the vertical rod (102) is respectively connected to a diagonal rod structure connected to the truss (1) on both sides of the longitudinal bridge upward; A first hoisting truss vehicle (4) is arranged on the truss (1) and moves along the longitudinal direction of the bridge.

2. The wharf crane for steel-concrete composite beam construction as claimed in claim 1, characterized in that: A connecting plate (106) is provided on the top of the vertical rod (102), and a plurality of connecting holes are provided on the connecting plate (106); A plurality of connection points distributed at intervals are provided on the truss (1) and on both sides of the vertical bridge of the vertical rod (102); The inclined rod structure comprises a plurality of inclined rods (103), one end of each inclined rod (103) being correspondingly connected to one of the connection holes, and the other end being connected to one of the connection points; and the lengths of each inclined rod (103) are unequal.

3. The wharf crane for steel-concrete composite beam construction as claimed in claim 2, characterized in that: The oblique rod (103) comprises a plurality of segments, and two adjacent segments are connected via a pin shaft.

4. The wharf crane for steel-concrete composite beam construction according to claim 1, characterized in that: The truss (1) comprises: Two horizontal rods (101) are arranged at intervals in the transverse direction of the bridge and extend in the longitudinal direction of the bridge; A flat link (104) extending in the transverse direction and having two ends connected to a horizontal rod (101) to form a rectangular frame structure; The number of the vertical rods (102) is two, and the two vertical rods (102) are arranged with a horizontal bridge spaced upward and connected to the corresponding horizontal rods (101), and a horizontal connection structure (105) is connected between the two vertical rods (102).

5. The wharf crane for steel-concrete composite beam construction as claimed in claim 4, characterized in that: A connecting support (107) is provided at the bottom of the horizontal rod (101) and has a designed length in the longitudinal direction of the bridge; The column structure (2) comprises: Two second foundation seats (201) are arranged at intervals upward from the cross bridge and are used to be arranged in a foundation pit on the shore; A column steel pipe frame (202) is installed on the corresponding second foundation seat (201); the top of the column steel pipe frame (202) is provided with two column longitudinal and transverse beams (203) arranged at intervals along the longitudinal bridge direction; the top of the column longitudinal and transverse beams (203) is connected to the bottom of the connecting support (107).

6. The wharf crane for steel-concrete composite beam construction as claimed in claim 1, characterized in that: The first hoisting gantry vehicle (4) comprises a truss beam (401), a hoisting mechanism (402), a steel wire rope (403), a hoisting device (404) and a track wheel (405); The truss beam (401) is arranged along the transverse direction of the bridge, and both ends thereof are slidably connected to the truss (1) via track wheels (405); The hoisting mechanism (402) is installed on the truss (401) and is connected to the sling (404) via a steel wire rope (403).

7. The wharf crane for steel-concrete composite beam construction as claimed in claim 6, characterized in that: It also comprises a second lifting truss vehicle (5) arranged on the truss (1), and the structure of the second lifting truss vehicle (5) is the same as that of the first lifting truss vehicle (4).

8. The wharf crane for steel-concrete composite beam construction as claimed in claim 1, characterized in that: The tension-compression rear anchor structure (3) comprises: Two support pipe assemblies (304) are spaced apart in the transverse direction; a column top crossbeam (305) is provided on the top of each support pipe assembly (304); A distribution beam (307) is located above the column top cross beam (305), and a clamping space is provided between the two, the clamping space clamping the truss (1); A first anchoring structure, which is anchored and connected to the distribution beam (307), the truss (1) and the column top cross beam (305); A first foundation seat (302) is used for installation in a foundation pit on the shore, and a reinforcing steel bar connected to the bottom of the support pipe assembly (304); A second anchoring structure, which is anchored and connected to the bottom of the support pipe assembly (304) and the first base seat (302); An anchor beam (303) is installed at the bottom of the support pipe assembly (304) and is anchored to the first foundation seat (302) through a prestressed anchor cable (301); the prestressed anchor cable (301) passes through the anchor beam (303) and the first foundation seat (302) in sequence downwards and is used to anchor to the rock strata in the foundation pit.

9. The wharf crane for steel-concrete composite beam construction as claimed in claim 8, characterized in that: The first anchoring structure comprises an anchor rod (306), the anchor rod (306) is arranged on the distribution beam (307), and passes through the distribution beam (307) downwards to be anchored to the column top cross beam (305); The second anchoring structure comprises an anchor beam (303) and a prestressed anchor cable (301); the anchor beam (303) is installed at the bottom of the support pipe assembly (304) and is anchored to the first foundation seat (302) through the prestressed anchor cable (301); the prestressed anchor cable (301) passes through the anchor beam (303) and the first foundation seat (302) in sequence downwards, and is used to anchor to the rock strata in the foundation pit.

10. A method for hoisting a steel-concrete composite beam, characterized in that: It includes the following steps: The wharf crane for the construction of the steel-concrete composite beam as described in any one of claims 1 to 9 is installed on the shore; the wharf crane for the construction of the steel-concrete composite beam comprises a second hoisting gantry (5) and a first hoisting gantry (4) which are sequentially arranged upward from the longitudinal bridge; The steel beam (601) is transported by water to the bottom of the truss (1), and then the first hoisting truss vehicle (4) is moved to the top of the steel beam (601), and then the first hoisting truss vehicle (4) and the steel beam (601) are connected and hoisted to the beam storage position; Connecting the second hoisting gantry (5) to the prefabricated bridge deck (602) located on the shore, and then using the second hoisting gantry (5) to move and lower the prefabricated bridge deck (602) onto the steel beam (601); Casting a wet joint between the steel beam (601) and the precast bridge deck (602) to form a steel-concrete composite beam; The steel-concrete composite beam is hoisted to the installation position using a first hoisting truss vehicle (4).

Images