Integral mounting method for steel bent cap

Abstract

The invention relates to the technical field of building construction, in particular to a steel cover beam integral installation method. The steel cover beam is processed into two symmetrical components which are respectively connected with a balancing weight and an anti-collision object. And a guide steel cable penetrates through the uppermost row of bolt holes of the flange plates of the two components. And the two components are connected with a lifting point at the bottom of the bridge through a chain block. And the two components are lifted through the central axis lifting point. And then the chain blocks are synchronously started to lift the two components, so that the two components are higher than the top surface of the pier column. After the balancing weight and the anti-collision object are taken down, the two components are horizontally hung on the pier top of the pier column through the web plate hanging points. The two components are aligned through the guide steel cable, long screws synchronously penetrate through the bolt holes in the middle rows of the two sides of the flange plates of the two components, and nuts of the long screws are screwed to enable the flange plates of the two components to be close to each other. Bolts are symmetrically mounted in the other bolt holes, so that the flange plates of the two components are folded. And taking out the guide steel rope and the long screw rod, planting steel bars through reserved holes, injecting glue, and removing the chain blocks after the glue is solidified.

Description

Technical Field

[0001] This manual relates to the field of building construction technology, and in particular to a method for integral installation of steel cap beams. Background Technology

[0002] In the field of lateral overturning reinforcement of single-pier overpasses, improving the overall safety and stability of the structure has always been a key issue in engineering practice. Steel cap beam reinforcement technology, by adding supports on both sides of the existing pier, effectively increases the lever arm of the support reaction force, thereby significantly improving the overturning moment and safety factor of the structure. Simultaneously, this technology allows the steel cap beam to be tightly integrated with the old pier, ensuring uniform load transfer to the old pier, and therefore it is widely used in practical engineering.

[0003] However, the steel cap beam reinforcement technology still faces many challenges in its implementation. First, the steel cap beam itself has numerous parts, requiring extremely high precision in both machining and on-site installation; any deviation can affect the reinforcement effect. Second, due to the significant weight of the steel cap beam and the typically low working space under the bridge, conventional hoisting equipment is insufficient, while using specialized cranes would significantly increase construction costs. To reduce the weight of each hoisting operation, the conventional approach is to disassemble the steel cap beam into multiple components, hoisting each piece individually and then manually adjusting it using a scaffold. This method not only results in extremely low efficiency but also makes it difficult to guarantee construction quality due to the arbitrariness of manual adjustments, thus affecting the overall reinforcement effect and structural durability.

[0004] Therefore, this specification provides a method for the overall installation of steel cap beams. Summary of the Invention

[0005] This specification provides a method for the overall installation of steel cap beams, which partially solves the aforementioned problems existing in the prior art.

[0006] The following technical solution is adopted in this specification: This manual provides a method for the integral installation of steel cap beams, including: S1. The steel cap beam is processed into two symmetrical components along the central axis of the beam surface; S2. Connect preset counterweights to the outer sides of the two components respectively, and attach anti-collision materials to the inner sides of the two components; S3. Place the two components symmetrically on both sides of the pier, and insert guide steel cables through the uppermost row of bolt holes on the flanges of the two components; S4. The two components are symmetrically connected to the preset lifting points at the bottom of the bridge using eight hand-operated hoists, and the two components are lifted to a preset height. The preset lifting points are divided into four central axis lifting points and four web plate lifting points. S5. The two components are lifted synchronously by the hand chain hoists connected by each central axis lifting point, so that both components tilt outward; S6. Simultaneously activate eight hand-operated hoists to lift the two components as a whole, so that the two components are higher than the top surface of the pier column; S7. Simultaneously remove the counterweight block connecting the two components, and remove the anti-collision device after the two components are stable; S8. The two components are lifted synchronously by the hand-operated hoists connected to each web lifting point, so that the two components are horizontal and hung on the top of the pier column; S9. Guide steel cables are inserted through the uppermost row of bolt holes on the flanges of the two components to symmetrically align the bolt holes on the flanges of the two components, and long screws are simultaneously inserted into the middle row of bolt holes on both sides of the flanges of the two components. The nuts of the long screws are tightened so that the flanges of the two components are brought closer together until the gap is less than the preset length. S10. Install bolts symmetrically in the remaining bolt holes of the flanges of the two components so that the flanges of the two components are closed. S11. Take out the guide cable and the long screw, and symmetrically install bolts in the uppermost row of bolt holes and the middle row of bolt holes on both sides of the flange of the two components; S12. Reinforcing bars are symmetrically and evenly inserted and glued through the reserved holes on the sides of the two components. After the glue solidifies, each hand chain hoist is removed.

[0007] Based on the aforementioned technical methods, this method of installing the steel cap beam as a whole, while minimizing the occupation of the underpass lanes (usually one lane), utilizes the bottom of the beam as a lifting point to install a hand-operated hoist. An eccentric counterweight maintains the lifting posture, and pre-threaded guide cables provide guidance (the guide cables act like "threading a needle." In high-altitude operations, it is extremely difficult to perfectly align the bolt holes of the flanges of two large components. Threading the cables first at the top is equivalent to pre-establishing a sliding track to guide the components along a predetermined path). Long screws provide the clamping force to achieve the overall lifting and rapid connection of the steel cap beam. The installation process requires no crane assistance or support frame erection, resulting in fast construction speed and high installation quality. This greatly promotes the application of steel cap beam reinforcement technology in the anti-overturning construction of single-pier column overpasses.

[0008] Furthermore, in S4, each component is symmetrically provided with two central axis lifting points and two web plate lifting points, and each lifting point provided on the two components corresponds to each of the preset lifting points at the bottom of the bridge, with the corresponding two lifting points located on the same vertical line.

[0009] Furthermore, the eight chain hoists in S4 are of the same model, and the total lifting capacity of the eight chain hoists is more than twice the total weight of the two components and the counterweight.

[0010] Furthermore, in S2, the weight of each counterweight is between one-quarter and one-third of the weight of each component.

[0011] Furthermore, in S2, preset counterweights are connected to the outer sides of the two components respectively, specifically including: Pre-set counterweights are detachably connected to the outer sides of the two components via hangers.

[0012] Furthermore, the guide cable described in S3 is equipped with locking buckles at both ends to prevent the guide cable from falling off during the lifting of the steel cap beam.

[0013] Furthermore, the guide cable described in S3 is made of steel strand.

[0014] Furthermore, the long screw described in S9 is made of high-strength rolled steel.

[0015] Furthermore, the anti-collision material in S2 is a foam block.

[0016] Furthermore, the anti-collision material in S2 is a rubber block.

[0017] The above-mentioned technical solutions adopted in this specification can achieve the following beneficial effects: This solution, while minimizing the occupation of the underpass lanes (usually one lane), utilizes the bottom of the beam as a lifting point to install a hand-operated hoist. An eccentric counterweight maintains the lifting posture, and pre-threaded guide cables provide guidance (the guide cables act like "threading a needle." In high-altitude operations, perfectly aligning the bolt holes of two large component flanges is extremely difficult. Threading the cables first at the top is equivalent to pre-establishing a sliding track, guiding the components closer along a predetermined path). Long screws provide the clamping force to achieve the overall lifting and rapid connection of the steel cap beam. The installation process requires no crane assistance or support frame erection, resulting in fast construction speed and high installation quality. This greatly promotes the application of steel cap beam reinforcement technology in the anti-overturning construction of single-pier column overpasses. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this specification and form part of this specification, illustrate exemplary embodiments and are used to explain this specification, but do not constitute an undue limitation thereof. In the drawings: Figure 1 A schematic flowchart illustrating an integral installation method for a steel cap beam provided in the embodiments of this specification; Figure 2 A schematic diagram illustrating the preparation for lifting the steel cap beam provided in this manual; Figure 3 This is a schematic diagram of a lifting point plane provided in this specification; Figure 4 This is a schematic diagram of the steel cap beam hoisting process provided in this manual; Figure 5 This is a schematic diagram illustrating the completed installation of a steel cap beam, as provided in this instruction manual.

[0019] Figure label: 1-Steel cap beam; 11-Component; 2-Counterweight; 3-piers; 4-Guide cable; 5- Hand-operated chain hoist; 6-Bottom of the bridge; 7-Central axis lifting point; 8-Web plate suspension points; 9- Bolt.

[0020] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The same or similar reference numerals correspond to the same or similar components. The terms describing positional relationships in the drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this specification clearer, the technical solutions of this specification will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this specification, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments in this specification without creative effort are within the scope of protection of this application.

[0022] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0023] The technical solutions provided in the various embodiments of this specification are described in detail below with reference to the accompanying drawings.

[0024] Figure 1 This is a flowchart illustrating a method for integral installation of a steel cap beam, provided as an embodiment of this specification, and is also referenced. Figures 2 to 5The diagram shown illustrates different processes during the installation of the steel cap beam, including the following steps: S1: The steel cap beam is separated into two symmetrical components along the central axis of the beam surface.

[0025] In one or more embodiments of this specification, in order to enable ordinary forklifts to transport the steel cap beam 1 and avoid reliance on special cranes, the steel cap beam 1 can be prefabricated in the factory into two symmetrical steel cap beam components (hereinafter referred to as components 11) along the central axis of the beam surface. Prefabricating two symmetrical components 11 along the central axis ensures that the geometric dimensions of the left and right components are completely consistent, facilitating subsequent mirror-image installation. At the same time, the weight of each component is halved, making it easier to handle and install. Then, these two components 11 (i.e., the steel cap beam 1) can be transported to the installation site using a flatbed truck or other transportation tools.

[0026] S2: Connect preset counterweights to the outer sides of the two components respectively, and attach anti-collision materials to the inner sides of the two components.

[0027] In one or more embodiments of this specification, preset counterweights 2 can be connected to the outer sides of the two components 11 respectively, and anti-collision materials (not shown in the figure) can be affixed to the inner sides of the two components 11. The center of gravity of the steel cap beam 1 itself is biased towards the pier side (thicker and heavier). By hanging counterweights 2 on the outer side (below the support of the steel cap beam), the overall center of gravity is artificially shifted outward. The purpose of this is to ensure that the steel cap beam 1 naturally presents a "heavier on the outside and lighter on the inside" state during lifting, creating initial conditions for subsequent lifting and installation. Furthermore, in low-ceilinged spaces, the components 11 are prone to swaying and impacting the pier (concrete is easily damaged). The anti-collision materials, as a physical buffer layer, can protect the paint surface of the pier 3 and the steel cap beam 1. The weight of each counterweight 2 is between one-quarter and one-third of the weight of each component 11.

[0028] S3: Place the two components symmetrically on both sides of the pier, and insert guide steel cables through the uppermost row of bolt holes on the flanges of the two components.

[0029] In one or more embodiments of this specification, after the above preparations are completed, the two components 11 can be symmetrically placed on both sides of the pier 3 using tools such as forklifts, and guide steel cables 4 are inserted through the uppermost row of bolt holes on the flanges of the two components 11. The guide steel cables 4 are not tightened, as long as they do not fall out of the bolt holes.

[0030] Pre-threading the guide cable 4 is equivalent to pre-wiring. In a very limited working space, it would be extremely difficult to thread the bolts after the steel cap beam component 11 has been hoisted up. By pre-threading the cable into the upper row of bolt holes, which are the easiest to align, it serves as a guide for the subsequent alignment and closing of the two components 11.

[0031] S4: The two components are symmetrically connected to the preset lifting points at the bottom of the bridge using eight hand-operated hoists, and the two components are lifted to the preset height. The preset lifting points are divided into four central axis lifting points and four web plate lifting points.

[0032] In one or more embodiments of this specification, two components 11 can be symmetrically connected to preset lifting points at the bottom of the bridge 6 using eight hand-operated hoists 5, and the two components 11 can be lifted to a preset height. For example, eight 5t hand-operated hoists 5 can be used to connect component 1 to the bottom of the bridge 6, and the two components 11 can be lifted to a height of 50cm above the ground so that the top surface of the steel cap beam 1 is horizontal, to check the lifting safety.

[0033] Each preset lifting point is divided into four central axis lifting points 7 and four web plate lifting points 8. Furthermore, each component 11 is symmetrically provided with two central axis lifting points 7 and two web plate lifting points 8, and each lifting point provided on the two components 11 corresponds to each preset lifting point at the bottom of the bridge 6, with the corresponding two lifting points located on the same vertical line.

[0034] Of course, the eight chain hoists 5 must be of the same model, and the total lifting capacity of the eight chain hoists 5 must be more than twice the total weight of the two components 11 and the counterweight 2.

[0035] Figure 2 This is a schematic diagram illustrating the preparation for lifting the steel cap beam provided in this instruction manual. As shown, the two components 11, which are connected to the counterweight block 2 and guided by the guide steel cable 4, are simultaneously lifted to a predetermined height using eight hand-operated hoists 5.

[0036] Figure 3 This is a schematic diagram of a lifting point plane provided in this specification. Figure 2 As shown, the two components 11 on the left and right sides surround the central cylindrical pier 3. The eight lifting points shown in the figure are divided into four web plate lifting points 8 and four central axis lifting points 7. Each half of the steel cap beam 1 (i.e., one component 11) corresponds to two web plate lifting points 8 and two central axis lifting points 7.

[0037] S5: The two components are lifted synchronously by the hand-operated hoists connected by the central axis lifting points, so that the two components tilt outward.

[0038] In one or more embodiments of this specification, after the lifting preparation begins, each web lifting point 8 remains stationary. The two components 11 are simultaneously lifted by the hand-operated hoists 5 connected to each central axis lifting point 7. Since the counterweight 2 was previously attached, the center of gravity is biased outwards. When the inner central axis lifting point 7 is lifted, both components 11 will naturally tilt outwards. It is worth noting that in step S5 and subsequent steps, the movement of the two steel cap beams 1 (i.e., the two components 11) must be synchronized to prevent eccentric forces from being applied to the pier column 3.

[0039] S6: Simultaneously activate eight hand-operated hoists to lift the two components as a whole, so that the two components are higher than the top surface of the pier column.

[0040] S7: Simultaneously remove the counterweight block connecting the two components, and remove the anti-collision device after the two components are stable.

[0041] In one or more embodiments of this specification, eight chain hoists 5 are simultaneously activated to lift two components 11 as a whole, so that the two components 11 are higher than the top surface of the pier. Then, the counterweight 2 connected to the two components 11 is removed simultaneously, and the anti-collision device is removed after the two components 11 are stable.

[0042] Figure 4 This is a schematic diagram of the steel cap beam hoisting process provided in this manual. As shown in the figure, eight hand-operated hoists 5 are activated simultaneously to lift the two components 11 as a whole, causing the two components 11 to be slowly raised.

[0043] S8: The two components are simultaneously lifted by the hand-operated hoists connected to the lifting points of each web plate, so that the two components are horizontal and hung on the top of the pier column.

[0044] In one or more embodiments of this specification, since the two components 11 are higher than the top surface of the pier, the middle of the two components 11 is higher than the edge. In the narrow space at the bottom of the bridge 6, it is obvious that only the middle part of the steel cap beam 1, which is lifted by the central axis lifting point 7, is higher than the top surface of the pier. Therefore, the central axis lifting point 7 can be kept stationary, and the two components 11 can be lifted synchronously by the hand-operated hoists 5 connected by the web lifting points 8, so that the two components 11 are horizontal and hung on the top of the pier (the steel cap beam 1 has an annular top sealing plate on the side of the pier. At this time, the web lifting points 8 are adjusted so that the steel cap beam 1 is slowly lowered from the inclined state and sits steadily on the annular sealing plate on the top of the pier. This sealing plate plays a role in temporary support and bearing).

[0045] S9: Guide steel cables are inserted through the uppermost row of bolt holes on the flanges of the two components to symmetrically align the bolt holes on the flanges of the two components, and long screws are simultaneously inserted into the middle row of bolt holes on both sides of the flanges of the two components. The nuts of the long screws are tightened so that the flanges of the two components are brought closer together until the gap is less than the preset length.

[0046] In one or more embodiments of this specification, there is a large gap between the two components 11, making it difficult to align the bolt holes perfectly. If bolts are forced in, it may take several hours to align even one hole. Therefore, guide steel cables 4, which pass through the uppermost row of bolt holes on the flanges of the two components 11, can be used to symmetrically align the bolt holes on the flanges of the two components 11. Simultaneously, long threaded rods are inserted into the middle row of bolt holes on both sides of the flanges of the two components 11, and the nuts of the long threaded rods are tightened to bring the flanges of the two components 11 closer together until the gap is less than a preset length.

[0047] Using the previously threaded steel cables, like threading a needle, the upper row of bolt holes on the two components 11 are roughly pulled together. Then, long screws are symmetrically inserted. Because the screws are long, they can pass through even if the holes are slightly misaligned. The nuts are tightened, and the mechanical force of the threads is used to force the two huge flanges to slowly pull closer until the gap is reduced to a level where a regular screw can be inserted.

[0048] S10: Install bolts symmetrically in the remaining bolt holes of the flanges of the two components so that the flanges of the two components are closed.

[0049] S11: Take out the guide cable and the long screw, and symmetrically install bolts in the uppermost row of bolt holes and the middle row of bolt holes on both sides of the flange of the two components.

[0050] In one or more embodiments of this specification, after the flanges of the two components 11 are brought close together until the gap is less than a preset length, bolts 9 can be symmetrically installed in the remaining bolt holes of the flanges of the two components 11, so that the flanges of the two components 11 are closed.

[0051] Then remove the guide cable and long screw, and symmetrically install bolts 9 in the top row of bolt holes and the middle row of bolt holes on both sides of the flange of the two components 11, and tighten them.

[0052] S12: Attach and inject adhesive through the pre-reserved holes on the sides of the two components in a symmetrical and uniform manner. After the adhesive has solidified, remove each hand chain hoist.

[0053] In one or more embodiments of this specification, finally, the reinforcing bars are symmetrically and evenly injected with adhesive through the reserved holes on the sides of the two components 11. After the adhesive has solidified, each hand chain hoist 5 is removed to complete the installation of the steel cap beam 1.

[0054] The steel cap beam 1 is not simply placed on top of the old pier; instead, it is reinforced with steel bars and injected with structural adhesive through pre-drilled holes on the side, forming a unified structure with the old pier column to ensure uniform stress transfer. Once the adhesive has solidified, the hoisting equipment can be removed.

[0055] Figure 5 This diagram illustrates the completed installation of a steel cap beam as provided in this specification. After the flanges of the two components 11 are connected and fixed with bolts 9 and the rebar is installed and grouted, the steel cap beam 1 is successfully installed on the pier as shown in the diagram.

[0056] based on Figure 1The method for installing the steel cap beam as a whole, while minimizing the occupation of the underpass (usually one lane), utilizes the bottom of the beam as a lifting point to install a hand-operated hoist. An eccentric counterweight maintains the lifting posture, and pre-threaded guide cables provide guidance (the guide cables act like "threading a needle." In high-altitude operations, it is very difficult to perfectly align the bolt holes of the flanges of two large components. Threading the cables first at the top is equivalent to pre-establishing a sliding track to guide the components closer along a predetermined path). Long screws provide the clamping force to achieve the overall lifting and rapid connection of the steel cap beam. The installation process requires no crane assistance or support frame erection, resulting in fast construction speed and high installation quality. This greatly promotes the application of steel cap beam reinforcement technology in the anti-overturning construction of single-pier column overpasses.

[0057] Furthermore, in one or more embodiments of this specification, preset counterweights 2 can be detachably connected to the outer sides of the two components 11 via hanging rods. Of course, the counterweights 2 can also be connected via hooks; the method of connecting the counterweights 2 is not limited in this specification.

[0058] In one or more embodiments of this specification, the guide cable 4 may be provided with buckles at both ends to prevent the guide cable 4 from falling off during the lifting of the steel cap beam 1.

[0059] In one or more embodiments of this specification, the guide cable 4 is made of steel strand.

[0060] In one or more embodiments of this specification, the long screw is made of high-strength rolled steel.

[0061] In one or more embodiments of this specification, the impact protector may be a foam block. Of course, the impact protector may also be a rubber block or other impact-resistant material.

[0062] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0063] The above description is merely an embodiment of this specification and is not intended to limit this specification. Various modifications and variations can be made to this specification by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of the claims of this specification.

Claims

1. A method for integral installation of a steel cap beam, characterized in that, include: S1. The steel cap beam (1) is separated along the central axis of the beam surface and processed into two symmetrical components (11). S2. Connect the preset counterweights (2) to the outside of the two components (11) respectively, and attach anti-collision materials to the inside of the two components (11); S3. Place the two components (11) symmetrically on both sides of the pier (3), and insert guide steel cables (4) through the uppermost row of bolt holes on the flange of the two components (11). S4. The two components (11) are symmetrically connected to the preset lifting points at the bottom of the bridge (6) by eight hand-operated hoists (5), and the two components (11) are lifted to the preset height. The preset lifting points are divided into four central axis lifting points (7) and four web plate lifting points (8). S5. The two components (11) are lifted synchronously by the hand-operated hoists (5) connected by each central axis lifting point (7), so that the two components (11) are tilted outward; S6. Simultaneously start eight hand chain hoists (5) to lift the two components (11) as a whole, so that the two components (11) are higher than the top surface of the pier (3); S7. Simultaneously remove the counterweight (2) connected to the two components (11), and remove the anti-collision object after the two components (11) are stable; S8. The two components (11) are lifted synchronously by the hand-operated hoists (5) connected by each web plate lifting point (8), so that the two components (11) are horizontal and hung on the top of the pier column; S9. Guide steel cables (4) are inserted through the uppermost row of bolt holes of the flanges of the two components (11) to symmetrically align the bolt holes of the flanges of the two components (11), and simultaneously insert long screws into the middle row of bolt holes on both sides of the flanges of the two components (11), and tighten the nuts of the long screws so that the flanges of the two components (11) are close together until the gap is less than the preset length. S10. Install bolts (9) symmetrically in the remaining bolt holes of the flanges of the two components (11) so that the flanges of the two components (11) are closed. S11. Take out the guide cable and the long screw, and symmetrically install bolts (9) in the uppermost row of bolt holes and the middle row of bolt holes on both sides of the flange of the two components (11). S12. Rebar is symmetrically and evenly injected through the reserved holes on the sides of the two components (11). After the adhesive solidifies, each hand chain hoist (5) is removed.

2. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, In S4, each component (11) is symmetrically provided with two central axis suspension points (6) and two web plate suspension points (7), and each suspension point provided on the two components (11) corresponds to each of the preset suspension points at the bottom of the bridge, and the two corresponding suspension points are located on the same vertical line.

3. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The eight chain hoists (5) in S4 are of the same model, and the total lifting capacity of the eight chain hoists (5) is more than twice the total weight of the two components (11) and the counterweight (2).

4. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The weight of each counterweight (2) in S2 is between one-quarter and one-third of the weight of each component (11).

5. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, In S2, preset counterweights (2) are connected to the outer sides of the two components (11), specifically including: Pre-set counterweights (2) are detachably connected to the outside of the two components (11) via hangers.

6. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The guide cable (4) in S3 is equipped with locks at both ends to prevent the guide cable (4) from falling off during the lifting of the steel cap beam (1).

7. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The guide cable (4) mentioned in S3 is made of steel strand.

8. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The long screw described in S9 is made of precision rolled steel.

9. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The anti-collision material in S2 is a foam block.

10. The method for integral installation of a steel cap beam as described in claim 1, characterized in that, The anti-collision device in S2 is a rubber block.

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