High-pier tower crane cable-stayed passage and construction method thereof

Abstract

This invention discloses a high-pier tower crane cable-stayed passageway and its construction method, relating to the field of high-pier bridge construction technology. It includes: a passageway body comprising two main beams, multiple connectors, and protective components. The two main beams are spaced apart, with one end connected to a continuous beam via an anchoring component, and the other end extending towards the tower crane. Multiple connectors are arranged parallel and spaced apart, with both ends connected to the two main beams. Walking platforms are laid on the connectors and connected to the connectors. A column is positioned at the end of each main beam near the continuous beam, with an oblique connector connecting the end of the main beam near the continuous beam to the column. Two oblique connectors connect the end of the main beam near the tower crane to the column. The protective components are arranged along the length of the main beams and connected to them. This invention enables rapid construction and dismantling of the passageway body while improving safety.

Description

Technical Field

[0001] This invention relates to the field of high-pier bridge construction technology, and more specifically to a high-pier tower crane cable-stayed passage and its construction method. Background Technology

[0002] With the increasing maturity of high-pier, long-span bridge development in my country and the gradual improvement of public safety awareness, the convenience and safety of construction projects have become a focus of social attention. During the construction process, zero accidents are a prerequisite for benchmark projects and a primary task for creating optimal economic benefits. This requires construction units to enhance their safety awareness and eliminate all potential safety hazards.

[0003] However, during the construction of high-pier, long-span bridges, due to the excessive height of the tower cranes and the large distance between them and the structures, tower crane operators have to climb the vertical ladder at the lowest point of the standard tower crane section to the control room every day to get to and from get off work. The climbing efficiency is low and the process poses great safety hazards. In particular, the safety risks are even greater when encountering bad weather and when the ladder is easily affected by rain and snow. Safety accidents are very likely to occur during the climbing process.

[0004] Furthermore, since there are usually no other anchoring points on the beam surface during bridge construction, the traditional practice is to erect a simple, simply supported beam platform or a simple bracket platform between the tower crane and the structure. However, if the distance between the tower crane and the beam surface is too large, the simple, simply supported beam platform has difficulty in stabilizing itself, posing a significant safety hazard. If a simple bracket platform is used, the bracket structure is usually complex and difficult to install and dismantle due to the limitations of the bridge flange plates.

[0005] Therefore, how to construct a tower crane access route that is both safe and economical is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the present invention provides a high-pier tower crane cable-stayed passage and its construction method, which can quickly complete the construction and dismantling of the passage body while improving safety. To achieve the above objectives, the present invention adopts the following technical solution: On one hand, the present invention discloses a high-pier tower crane cable-stayed passage, comprising: The passageway body includes two main beams, multiple connectors, and a protective assembly. The two main beams are spaced apart, with one end of each main beam connected to a continuous beam via an anchoring assembly, and the other end of each main beam extending towards the tower crane. The multiple connectors are arranged in parallel and spaced apart, with each connector's two ends connected to one of the two main beams. A walking platform is laid on each of the multiple connectors and connected to the multiple connectors. A column is provided at the end of each main beam near the continuous beam, and an oblique connector connects the end of each main beam near the continuous beam to the column. Two oblique connectors connect the end of each main beam near the tower crane to the column. The protective assembly is arranged along the length of the main beam and connected to the main beam.

[0007] Furthermore, the anchoring assembly includes an anchoring rod, multiple pad beams, and multiple anchor beams. The multiple pad beams are all placed above the continuous beam, spaced apart and parallel to the connector. The two main beams overlap the two ends of the pad beams respectively. Multiple anchor beams are arranged above the main beams, spaced apart and parallel to the pad beams. The anchoring rod passes through the continuous beam and the anchor beams in sequence, and both ends of the anchoring rod are locked with nuts.

[0008] Furthermore, the main beam has two tie rod holes spaced laterally at one end near the tower crane, and the column has two tie rod holes spaced vertically at one end near the tower crane. An oblique connector is connected between one tie rod hole on the main beam near the tower crane and one tie rod hole on the column away from the main beam. An oblique connector is also connected between one tie rod hole on the main beam near the column and one tie rod hole on the column near the main beam.

[0009] Furthermore, the main beam, pad beam, and anchor beam are all made by welding two channel steels back to back.

[0010] Furthermore, the connecting component is a channel steel, and the walking platform is made of wooden planks.

[0011] Furthermore, the protective assembly includes a plurality of first mounting columns, a plurality of second mounting columns, a protective net, and a protective door. The plurality of first mounting columns are spaced apart on one of the main beams, and the plurality of second mounting columns are spaced apart on another of the main beams. Protective nets are provided between adjacent first mounting columns and between adjacent second mounting columns. A protective door is provided between a first mounting column and a second mounting column near the continuous beam.

[0012] On the other hand, the present invention provides a construction method for a high-pier tower crane cable-stayed passageway, which is applied to the construction of the aforementioned high-pier tower crane cable-stayed passageway and includes the following steps: S100: Before pouring the A0 section of the T-shaped continuous beam, pre-embedded holes for anchor beams are set in advance, and the pre-embedded holes are set on the flange plate of the beam surface. S200: Install the anchor rod into the pre-embedded hole, lay pad beams on the beam surface, place multiple pad beams in parallel, and place two main beams on top of the pad beams. Use a tower crane to lift the installation. After installation, place the anchor beam on top of the main beam, and use anchor rods and nuts to press the pad beam, main beam and anchor beam onto the continuous beam. Weld columns on top of the main beam, connect the inclined connectors between the columns and the main beam, weld connectors between the two main beams, and connect the walking platform on top of the connectors. S300: Weld the first and second mounting columns onto the main beam, and install the protective net and protective door.

[0013] Furthermore, before pouring the A0 section of the T-shaped continuous beam, PVC pipes are pre-embedded, and after pouring, the PVC pipes are removed.

[0014] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a high-pier tower crane inclined cableway, in which the cableway body is built between the tower crane's ladder and the beam surface of the continuous beam, making it convenient for the operator to directly reach the vicinity of the ladder via the cableway body, and then enter the operator's cab via the ladder, without having to climb from the bottom of the tower crane's standard section to the operator's cab, reducing the safety hazards during the operator's climbing process and improving the operator's safety during the climbing process. The main beam, connecting parts and protective components can be prefabricated in the factory and installed on site, which can realize the rapid construction and dismantling of the cableway body and improve construction efficiency. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0016] Figure 1 This is a front view of the high-pier tower crane cable-stayed passage provided by the present invention; Figure 2 Provided by the present invention Figure 1 Enlarged view of A in the middle; Figure 3 A schematic diagram showing the distribution of pre-embedded holes provided by the present invention.

[0017] In the diagram: 1. Continuous beam; 11. Edge of continuous beam; 2. Anchor beam; 21. First anchor beam; 22. Second anchor beam; 3. Main beam; 4. Pad beam; 5. Column; 6. Diagonal connector; 7. Walking platform; 8. Connector; 9. Anchor rod; 10. Embedded hole; 101. First embedded hole; 102. Second embedded hole; 103. Third embedded hole. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] See Figure 1-3 On one hand, embodiments of the present invention disclose a high-pier tower crane cable-stayed passageway, comprising: The passageway body includes two main beams 3, multiple connectors 8, and protective components. The two main beams 3 are spaced apart. One end of the main beam 3 is connected to the continuous beam 1 through an anchoring component, and the other end of the main beam 3 extends towards the tower crane. Multiple connectors 8 are arranged in parallel and spaced apart, and both ends of the connectors 8 are connected to the two main beams 3 respectively. A walking platform 7 is laid on the multiple connectors 8 and is connected to the multiple connectors 8. A column 5 is provided at the end of the main beam 3 near the continuous beam 1. An oblique connector 6 is connected between the end of the main beam 3 near the continuous beam 1 and the column 5. Two oblique connectors 6 are connected between the end of the main beam 3 near the tower crane and the column 5. The protective components are arranged along the length of the main beam 3 and connected to the main beam 3.

[0020] The main beam 3, connector 8, protective components, anchoring components, walking platform 7, column 5, and diagonal connector 6 are all prefabricated in the factory. During the construction of the passage body, only the connection between each component needs to be completed, which speeds up the construction process. At the same time, it can improve the dismantling speed when the passage body is dismantled.

[0021] Anchoring components are used to connect one end of the main beam 3 to the continuous beam 1, and the other end of the main beam 3 is provided with diagonal support through the diagonal connector 6. The diagonal connector 6, the column 5 and the main beam 3 form a triangular stable structure, which transfers the load on the end of the main beam 3 away from the continuous beam 1 to the column 5, thereby reducing the bending moment and deflection of the main beam 3. This ensures the stability and quality of the main beam 3 without the need for connection to the tower crane.

[0022] After passing through the passage body via the continuous beam 1, the driver arrives near the ladder. During this process, the stability of the walking platform 7 is ensured by the anchoring components and the inclined connecting parts 6. The walking platform 7 and the protective components ensure the safety of the driver and improve the driver's safety.

[0023] In some embodiments, the anchoring assembly includes an anchor rod 9, a plurality of pad beams 4 and a plurality of anchor beams 2. The plurality of pad beams 4 are all placed above the continuous beam 1. The plurality of pad beams 4 are spaced apart and are all parallel to the connector 8. Two main beams 3 are respectively overlapped at both ends of the pad beams 4. A plurality of anchor beams 2 are provided above the main beams 3. The plurality of anchor beams 2 are spaced apart and are parallel to the pad beams 4. The anchor rod 9 passes through the continuous beam 1 and the anchor beams 2 in sequence. Both ends of the anchor rod 9 are locked with nuts.

[0024] During construction, the main beam 3 and the pad beam 4 are pressed between the anchor beam 2 and the continuous beam 1 by the anchor beam 2 and the anchor rod 9, which ensures the connection quality between the main beam 3 and the continuous beam 1.

[0025] The pressure from the main beam 3 on the continuous beam 1 at a local location is distributed to the entire continuous beam 1 by the pad beam 4, thus preventing damage to the continuous beam 1.

[0026] In some embodiments, the main beam 3 has two tie rod holes spaced laterally at one end near the tower crane, and the column 5 has two tie rod holes spaced vertically at one end near the tower crane. An oblique connector 6 connects one tie rod hole on the main beam 3 near the tower crane and one tie rod hole on the column 5 away from the main beam 3. An oblique connector 6 connects one tie rod hole on the main beam 3 near the column 5 and one tie rod hole on the column 5 near the main beam 3.

[0027] In some embodiments, the main beam 3, the pad beam 4, and the anchor beam 2 are all made by welding two channel steels back to back.

[0028] The main beam 3, pad beam 4, and anchor beam 2, formed by welding two channel steels, overcome the weakness of poor torsional and bending resistance of single channel steels. At a relatively low cost and with convenient construction, they achieve high bending stiffness and strong compressive stability close to that of I-beams, ensuring the stability of the main channel structure.

[0029] In some embodiments, the connector 8 is a channel steel and the walking platform 7 is made of wood.

[0030] In some embodiments, the protective assembly includes a plurality of first mounting columns, a plurality of second mounting columns, a protective net, and a protective door. The plurality of first mounting columns are spaced apart on a main beam 3, and the plurality of second mounting columns are spaced apart on another main beam 3. Protective nets are provided between adjacent first mounting columns and between adjacent second mounting columns. A protective door is provided between a first mounting column and a second mounting column near the continuous beam 1.

[0031] The safety of drivers is ensured by the safety netting, and the safety gates are used to close the passageway to prevent others from accidentally entering, thus ensuring the safety of other construction workers.

[0032] On the other hand, embodiments of the present invention disclose a construction method for a high-pier tower crane cable-stayed passageway. This construction method, applied to the construction of the aforementioned high-pier tower crane cable-stayed passageway, includes the following steps: S100: Before pouring the 1A0 section of the T-structure continuous beam, pre-embedded holes 10 of anchor beam 2 are set in advance, and the pre-embedded holes 10 are set on the flange plate of the beam surface. S200: Install the anchor rod 9 into the pre-embedded hole 10, lay the pad beam 4 on the beam surface, place multiple pad beams 4 in parallel, place two main beams 3 on top of the pad beams 4, use a tower crane to lift during the installation process, after installation, place the anchor beam 2 on top of the main beam 3, use the anchor rod 9 and nuts to press the pad beam 4, main beam 3 and anchor beam 2 onto the continuous beam 1, weld the column 5 on top of the main beam 3, connect the inclined connector 6 between the column 5 and the main beam 3, weld the connector 8 between the two main beams 3, and connect the walking platform 7 on top of the connector 8; S300: Weld the first and second mounting columns onto the main beam 3, and install the protective net and protective door.

[0033] In some embodiments, PVC pipes are pre-embedded before the pouring of the 1A0 segment of the T-beam continuous beam, and the PVC pipes are removed after the pouring is completed.

[0034] In some embodiments, a 750cm channel body is constructed. The anchor rod 9 is made of 32mm precision rolled threaded steel. The pad beam 4 and the main beam 3 are both made of two C20 channel steels welded back to back. Three pad beams are laid. The anchor beam 2 is made of two C18 channel steels welded back to back. Three anchor beams are provided. The oblique connector 6 is made of 25mm precision rolled threaded steel. The connector 8 is made of C10 channel steel. The first mounting column and the second mounting column are made of C10 channel steel. The height of the first mounting column and the second mounting column is 120cm.

[0035] S100: Before pouring the continuous beam 1A0 section, pre-embedded holes 10 for the channel anchor beam 2 are set in advance using PVC pipes. All pre-embedded holes 10 are set on the flange plate of the beam surface. There are two first-level pre-embedded holes 101, which are 60cm away from the edge of the continuous beam. The two first-level pre-embedded holes 101 are symmetrically arranged along the center line of the continuous beam 1. There are two second-level pre-embedded holes 102, which are 180cm away from the edge of the continuous beam. The two second-level pre-embedded holes 102 are symmetrically arranged along the center line of the continuous beam 1. There are two third-level pre-embedded holes 103, which are 375cm away from the edge of the continuous beam. The two third-level pre-embedded holes 103 are symmetrically arranged along the center line of the continuous beam 1. The distance between the two first-level pre-embedded holes 101 is 200cm, the distance between the two second-level pre-embedded holes 102 is 400cm, and the distance between the two third-level pre-embedded holes 103 is 200cm.

[0036] S200: Connect the anchor rod 9 to the pre-embedded hole 10 of the continuous beam 1, and lay the pad beam 4. The first pad beam is 70cm from the edge of the continuous beam, the second pad beam is 245cm from the edge of the continuous beam, and the third pad beam is 415cm from the edge of the continuous beam. Two main beams 3 are arranged above the pad beam 4, with a distance of 100cm between the two main beams 3. Tower crane is used for hoisting during installation. After installation, connect the first anchor beam 21 to the anchor rod in the first pre-embedded hole 101, the second anchor beam 22 to the anchor rod in the second pre-embedded hole 102, and the third anchor beam to the anchor rod in the third pre-embedded hole 103. Press the pad beam 4 and the main beam 3 to achieve anchoring between the main beam 3 and the continuous beam 1. After anchoring, release the tower crane. After the main beam 3 is anchored, weld the column 5 above the main beam 3. The column 5 is set at the end of the first pad beam near the second pad beam, and the column 5 is 200cm high. An oblique connector 6 is installed between column 5 and main beam 3. Three tie rod holes are set on column 5. The first tie rod hole on column 5 is 135cm away from the main beam, the second tie rod hole on column 5 is 165cm away from the main beam, and the third tie rod hole on column 5 is 185cm away from the main beam. Two tie rod holes are set at the end of the main beam 3 away from the continuous beam 1. The fourth tie rod hole on the main beam 3 is set at the end of the main beam 3 closer to the tower crane. The fifth tie rod hole is set at a distance of 400cm from the column. The sixth tie rod hole is at the end of the main beam 3 closer to the continuous beam 1. An oblique connector 6 is connected between the first tie rod hole and the sixth tie rod hole, between the second tie rod hole and the fifth tie rod hole, and between the third tie rod hole and the fourth tie rod hole. Connectors 8 are welded between the two main beams 3. The distance between adjacent connectors 8 is 100cm. A 5cm thick wooden board is fully laid on top of the connector 8, and the wooden board is fixed to the connector 8 with steel bars.

[0037] S300: Weld the first and second mounting columns onto the two main beams 3 respectively. The spacing between adjacent first mounting columns and adjacent second mounting columns is 150cm. The adjacent first and adjacent second mounting columns are connected by three 16mm steel bars with equal spacing and wire mesh is installed to form a protective net. Install protective doors at the edge 11 of the continuous beam to close the entire passage and form a safe pedestrian passage.

[0038] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0039] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pier tower crane cable-stayed passageway, characterized in that, include: The passageway body includes two main beams, multiple connectors, and a protective assembly. The two main beams are spaced apart, with one end of each main beam connected to a continuous beam via an anchoring assembly, and the other end of each main beam extending towards the tower crane. The multiple connectors are arranged in parallel and spaced apart, with each connector's two ends connected to one of the two main beams. A walking platform is laid on each of the multiple connectors and connected to the multiple connectors. A column is provided at the end of each main beam near the continuous beam, and an oblique connector connects the end of each main beam near the continuous beam to the column. Two oblique connectors connect the end of each main beam near the tower crane to the column. The protective assembly is arranged along the length of the main beam and connected to the main beam.

2. The high-pier tower crane cable-stayed passageway according to claim 1, characterized in that, The anchoring assembly includes an anchor rod, multiple pad beams, and multiple anchor beams. The multiple pad beams are placed above the continuous beam, spaced apart and parallel to the connector. Two main beams overlap the two ends of the pad beams. Multiple anchor beams are placed above the main beams, spaced apart and parallel to the pad beams. The anchor rod passes through the continuous beam and the anchor beams in sequence, and both ends of the anchor rod are locked with nuts.

3. The high-pier tower crane cable-stayed passageway according to claim 1, characterized in that, The main beam has two tie rod holes spaced horizontally at one end near the tower crane, and the column has two tie rod holes spaced vertically at one end near the tower crane. An oblique connector connects one tie rod hole on the main beam near the tower crane and one tie rod hole on the column away from the main beam. An oblique connector also connects one tie rod hole on the main beam near the column and one tie rod hole on the column near the main beam.

4. The high-pier tower crane cable-stayed passageway according to claim 3, characterized in that, The main beam, pad beam, and anchor beam are all made by welding two channel steels back to back.

5. The high-pier tower crane cable-stayed passageway according to claim 1, characterized in that, The connecting component is a channel steel, and the walking platform is made of wooden planks.

6. The high-pier tower crane cable-stayed passageway according to claim 1, characterized in that, The protective assembly includes multiple first mounting columns, multiple second mounting columns, a protective net, and a protective door. The multiple first mounting columns are spaced apart on one main beam, and the multiple second mounting columns are spaced apart on another main beam. Protective nets are provided between adjacent first mounting columns and between adjacent second mounting columns. A protective door is provided between a first mounting column and a second mounting column near the continuous beam.

7. A construction method for a high-pier tower crane cable-stayed passageway, characterized in that, The construction method described herein, when applied to the construction of the high-pier tower crane cable-stayed passageway as described in any one of claims 1-6, includes the following steps: S100: Before pouring the A0 section of the T-shaped continuous beam, pre-embedded holes for anchor beams are set in advance, and the pre-embedded holes are set on the flange plate of the beam surface. S200: Install the anchor rod into the pre-embedded hole, lay pad beams on the beam surface, place multiple pad beams in parallel, and place two main beams on top of the pad beams. Use a tower crane to lift the installation. After installation, place the anchor beam on top of the main beam, and use anchor rods and nuts to press the pad beam, main beam and anchor beam onto the continuous beam. Weld columns on top of the main beam, connect the inclined connectors between the columns and the main beam, weld connectors between the two main beams, and connect the walking platform on top of the connectors. S300: Weld the first and second mounting columns onto the main beam, and install the protective net and protective door.

8. The construction method for the high-pier tower crane cable-stayed passageway according to claim 7, characterized in that, Before pouring the A0 section of the T-shaped continuous beam, PVC pipes were pre-embedded. After the pouring was completed, the PVC pipes were removed.

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