Construction method for front edge double-pile supported beam and berthing member

Abstract

The present application relates to the wharf construction processing technical field, specifically to a kind of construction method for front double-pile supporting beam and berthing component, the present application is installed on the front double-pile PHC pile as anchorage point using hoop erection method, and the structure of the front side of hoop welding cantilever beam as supporting berthing component, the whole installation mode is simple, convenient and reliable;Double hoop is used as the support of different layer structure on the front double-pile PHC pile, so as to ensure the stability of installation, and it is convenient to adjust in later period, especially the installation levelness of cantilever beam is adjusted conveniently.In addition, the crossbeam of upper end of front double-pile PHC pile is connected using supporting I-beam inclined beam, so as to ensure the connection stability between front double-pile PHC pile and rear double-pile, and adapt to the different direction of front double-pile PHC pile and rear double-pile. By prefabricating berthing component, the installation efficiency can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the wharf construction technical field, and in particular to a construction method for a front double-pile supported beam and a berthing component. BACKGROUND

[0002] In the construction of a port wharf, beam construction and berthing component installation are a crucial link. A high-pile beam slab wharf uses inclined pipe piles and vertical pipe piles as support foundations, which are driven into the wharf foundation to form a stable support frame through connecting beams. Beam construction and berthing component installation are completed by means of pile foundations to erect a support system. Most of the traditional designs of wharfs are front single-pile supported beam and berthing component structures, which only need a single-hoop long work steel to complete the erection of the support system, which is simple and convenient. However, with the prevalence of front double-pile supported enlarged-head track beam structures, the traditional front single-pile supported beam support system cannot ensure the bearing capacity and stability of the supported beam structure, and therefore a construction method for a front double-pile supported beam and a berthing component is needed to solve the above problems. SUMMARY

[0003] In order to overcome one of the deficiencies of the prior art, the purpose of the present application is to provide a construction method for a front double-pile supported beam and a berthing component, which can significantly improve the installation accuracy and construction efficiency of the berthing component, and ensure the stability and safety of the structure through optimized design and accurate construction.

[0004] To solve the above problems, the technical solution adopted by the present application is as follows:

[0005] A construction method for a front double-pile supported beam and a berthing component, comprising the following steps:

[0006] Preparation for erection: build a berthing component according to requirements; prepare a hoop according to actual construction conditions, select a pair of hoops and weld cantilever beams on the pair of hoops; measure whether the front double-row PHC piles are deviated, if deviated, mark the deviation on the front double-row PHC piles, and mark the hoop installation positions on the front double-row PHC piles and the rear double-row piles, respectively;

[0007] Installation of the foundation: install the lower hoop on the front double-row PHC piles, lay I-beams on both sides of the lower hoop on the front double-row PHC piles along the direction of the front double-row PHC piles to form longitudinal beams, and after measuring and leveling, weld and fix the longitudinal beams and the support brackets on the lower hoop;

[0008] The main body frame construction: installing the hoop on the rear row of double piles, then welding the I-beam on both sides of the hoop along the direction of the rear row of double piles to form a cross beam, which is perpendicular to the longitudinal beam; the corresponding end of the cross beam on both sides is close to but not connected with the front row of double PHC piles and forms an overhang, which is welded and fixed with the nearest longitudinal beam;

[0009] The enlarged part construction: installing the hoop with overhanging beams on the front row of double PHC piles, adjusting the installation position of the two hoops on the front row of double PHC piles according to the measured offset amount to control the relative distance between the overhanging beams on the two hoops; laying the supporting I-beam on the upper part of both ends of the longitudinal beam to connect the supporting bracket on the nearest hoop on the rear row of double piles, and after leveling, the supporting I-beam is point-welded and fixed with the upper hoop on the front row of double PHC piles;

[0010] Hoisting the berthing component: marking the boundary points of the berthing component installation on the enlarged part and the main body frame according to the preset position, laying the construction platform outside the installation area surrounded by the boundary points on the enlarged part and the main body frame; after the berthing component is hoisted to the preset position, the installation position of the berthing component is constrained and positioned by using the wooden square and the already marked boundary points; after confirming that the installation position of the berthing component is correct, the hoisting equipment is removed, and the hoisting work of the berthing component is completed.

[0011] In some possible embodiments, the step of installing the foundation includes the following steps:

[0012] Checking the deformation amount and size of the lower hoop, then assembling the hoop; clamping a small wooden board at the joint of the two halves of the hoop, assembling the hoop with micro-bolts, hoisting the lower hoop on the front row of double PHC piles by using the crane, adjusting the direction of the supporting bracket when the hoop reaches the specified elevation, then removing the clamped small wooden board, and tightening the bolts to complete the installation of the lower hoop on the front row of double PHC piles;

[0013] Laying the I-beam on both sides of the lower hoop of the front row of double PHC piles along the direction of the front row of double PHC piles to form a longitudinal beam; after measuring and leveling, the longitudinal beam is welded and fixed with the supporting bracket on the lower hoop;

[0014] In some possible embodiments, the step of constructing the enlarged part includes the following steps:

[0015] Check the deformation and size of the two hoops with cantilever beams, then assemble; clamp a small wooden board at the joint of the two half hoops, tighten the bolts to assemble the hoops, use the crane to lift the hoops with cantilever beams to each pile on the front double-row PHC pile; when the hoops with cantilever beams are lowered to the specified elevation, adjust the installation position of the two hoops on the front double-row PHC pile according to the previous deviation to control the relative distance between the two cantilever beams; after adjusting the distance between the two cantilever beams, remove the small wooden board and tighten the bolts to complete the installation of the hoops with cantilever beams;

[0016] Support I-beam inclined beams are laid on the upper part of the longitudinal beam at both ends, the outer end of the support I-beam inclined beams is connected to the support bracket on the nearest hoop on the rear double-row pile, and after leveling, the connection between the support I-beam inclined beams and the longitudinal beam and the support bracket on the nearest hoop on the rear double-row pile is welded and fixed.

[0017] In some possible embodiments, the welding leveling method of the support I-beam inclined beam is as follows:

[0018] The connection between the support I-beam inclined beam and the longitudinal beam, the support I-beam inclined beam and the support bracket on the nearest hoop on the rear double-row pile is fixed by spot welding, and then the support I-beam inclined beam and the support bracket on the hoop of the upper layer of the front double-row PHC pile are preliminarily fixed by spot welding;

[0019] After the spot welding of the support I-beam inclined beam and the support bracket on the front double-row PHC pile and the support bracket on the nearest hoop on the rear double-row pile is completed, the level is measured again, if the levelness of the support I-beam inclined beam is qualified, the support I-beam inclined beam and the two support brackets are fully welded, if the levelness of the support I-beam inclined beam is not qualified, the welding points on the support I-beam inclined beam and the support bracket on the front double-row PHC pile are knocked off, and then the positions of the two are spot welded until the levelness of the support I-beam inclined beam is qualified; after the levelness of the support I-beam inclined beam is qualified, the support I-beam inclined beam and the two support brackets are fully welded;

[0020] Finally, the connection between the longitudinal beam and the support I-beam inclined beam is welded.

[0021] In some possible embodiments, before welding between the support I-beam inclined beam and the longitudinal beam, the support I-beam inclined beam and the support bracket on the nearest hoop on the rear double-row pile, if direct leveling cannot be performed, the upper surface of the support I-beam inclined beam is at the same level as the upper surface of the cross beam with the end of the support I-beam inclined beam close to the cross beam as the reference, a steel plate of appropriate thickness is added at the other end of the support I-beam inclined beam for heightening, and then welding and fixing are performed.

[0022] In some possible embodiments, a height difference is reserved between the supporting I-beam inclined beams and the longitudinal beams.

[0023] In some possible embodiments, the specific operation of the construction platform comprises: separately laying wood and channel steel of the same height at intervals outside the installation area surrounded by the expansion and the boundary points on the upper edge of the main body frame, and the channel steel is connected and fixed with the cross beam, the longitudinal beam and the supporting I-beam inclined beam through spot welding; and laying a thick wood template layer on the wood and the channel steel.

[0024] In some possible embodiments, the step of hoisting the berthing component further comprises:

[0025] The connection is achieved by welding a connecting beam on the area where the two longitudinal beams are located between the two piles of the front row of double-row PHC piles, and the end of the connecting beam away from the rear row of double piles is welded with the side corresponding to the berthing component.

[0026] In some possible embodiments, the specific steps of constructing the berthing component comprise:

[0027] The specific positions of the straight-threaded sleeves on the left and right sides 12 cm away from the edge are marked according to the elevation data of the berthing component after analyzing the drawings, and the holes are opened on the forming mold of the berthing component after the positions are determined; four straight-threaded sleeves with a specification of M20 and a length of 12 cm are pre-buried on the left and right sides of the forming mold of the berthing component;

[0028] An arc-shaped steel bar is installed on each straight-threaded sleeve, and a steel plate with a specification of 100*100*10 mm is welded on the outside of each straight-threaded sleeve;

[0029] The straight-threaded sleeves and the steel plates are checked again before the forming mold of the berthing component is closed to ensure the flatness of the arc-shaped steel bars and the steel plates; the one end of the straight-threaded sleeve inside the forming mold is filled and blocked with a foam jointing agent, the bolt on the other end of the straight-threaded sleeve is tightened, and then the concrete is poured in the forming mold;

[0030] After the berthing component is formed, the forming mold is removed, all the straight-threaded sleeves are cleaned, and the bolts are unscrewed; the 200*100*20 mm reinforced steel plate is holed according to the positions of all the straight-threaded sleeves on each side of the berthing component, the holed 200*100*20 mm reinforced steel plate is installed on the straight-threaded sleeves of the berthing component, and the 200*100*20 mm reinforced steel plate is fixed on the side of the berthing component through the bolts; two cantilever channel steels are welded outward and in parallel on each 200*100*20 mm reinforced steel plate, and the bottom surfaces of the two cantilever channel steels are on the same level.

[0031] In some possible embodiments, the thickness of the hoop welded with the cantilever beam is greater than the thickness of all the other hoops.

[0032] Compared with the prior art, the present application has the beneficial effects that:

[0033] The construction method for the front double-pile supporting beam and the berthing component of the present application adopts a specially-made hoop installed on the front double-row PHC pile as an anchoring point, and the front side of the hoop is welded with a cantilever beam as a structure for supporting the berthing component. The whole installation method is simple, convenient and reliable. The double-layer hoop is used on the front double-row PHC pile as the support of different layers of structures. Such a design not only ensures the stability of the installation, but also facilitates the adjustment in the later stage, especially the adjustment of the installation levelness of the cantilever beam, thereby ensuring the installation accuracy of the berthing component. In addition, the supporting I-beam is used to connect the cross beam at the upper end of the front double-row PHC pile, which can ensure the connection stability between the front double-row PHC pile and the rear double pile, and adapt to the different directions of the front double-row PHC pile and the rear double pile. In the present application, the position of the berthing component can be accurately controlled by fine-tuning the hoop, so that the installation accuracy of the berthing component can be controlled. By prefabricating the berthing component, the installation efficiency can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0035] Figure 1 is the front view of the support provided by the embodiment of the present application and suitable for the construction of the front double-pile supporting cross beam and the berthing component structure;

[0036] Figure 2 is the top view of the support provided by the embodiment of the present application and suitable for the construction of the front double-pile supporting cross beam and the berthing component structure after removing the thick wood template layer;

[0037] Figure 3 is the structural schematic diagram of the locking and fixing member provided by the embodiment of the present application;

[0038] Figure 4 is the specific construction flowchart of the support provided by the embodiment of the present application and suitable for the construction of the front double-pile supporting cross beam and the berthing component structure.

[0039] Explanation of reference numerals:

[0040] berthing component 10, reinforced steel plate 11;

[0041] rear double pile 20;

[0042] front double-row PHC pile 30;

[0043] structure platform 40, cross beam 41, longitudinal beam 42, support I-beam inclined beam 43, connecting beam 44, cantilever beam 45, cantilever channel steel 46, thick wood template layer 47;

[0044] locking fixing member 50, hoop half ring 51, support bracket 52. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0046] Referring to Figures 1 to 3 The bracket shown in the figure is suitable for construction of a front edge double-pile supporting cross beam and a berthing component structure, comprising a rear row of double piles 20, a front edge double row of PHC piles 30 and a structure platform 40. The rear row of double piles 20 and the front edge double row of PHC piles 30 are both installed on a wharf foundation. The upper end of the rear row of double piles 20 is sleeved with a locking fixing member 50. The front edge double row of PHC piles 30 is arranged in front of the rear row of double piles 20 and perpendicular to the direction of the rear row of double piles 20. Two locking fixing members 50 are also sleeved on the front edge double row of PHC piles 30, and the two locking fixing members 50 on the front edge double row of PHC piles 30 are arranged at different heights. The bottom of the structure platform 40 is respectively installed on all the locking fixing members 50, and the berthing component 10 is installed on the structure platform 40.

[0047] The wharf foundation is a concrete foundation or a foundation that has been pre-set and embedded. The rear row of double piles 20 comprises two inclined inclined pipe piles arranged opposite each other. The two inclined pipe piles are arranged in front and behind. On the projection plane perpendicular to the direction of the two inclined pipe piles, the top of the two inclined pipe piles overlaps each other. The locking fixing member 50 is arranged on the overlapping area of the two inclined pipe piles. In the present application, the direction of the front edge double row of PHC piles 30 is perpendicular to the direction of the two inclined pipe piles, and the whole is in T shape. At the same time, the upper end of the front edge double row of PHC piles 30 is inclined to the rear row of double piles 20. Such design can increase the stability of the whole bracket.

[0048] In addition, the structure platform 40 is a conventional platform built, for example, a structure composed of I-beams and channel steels, which is designed according to actual use requirements. In addition, the locking fixing member 50 can be a conventional welded bracket structure or a hoop structure. If it is a welded bracket structure, a plurality of mounting screw holes can be formed on the welded bracket structure when the structure platform 40 is built to adjust the installation position. The installation height can be adjusted according to different heights. If it is a hoop structure, it only needs to loosen the hoop and then adjust the position of the hoop on the rear row of double piles 20 or the front edge double row of PHC piles 30.

[0049] The present application is applicable to the support of the structure construction of the front double-pile supporting beam and the berthing component. The front double-row PHC pile 30 is designed on the basis of the structure of the existing rear double pile 20. Such arrangement can further increase the stability of the outwardly extending part of the beam 41. The front double-row PHC pile 30 is arranged vertically with the rear double pile 20 in structure, forming a T-shaped structure design, which can improve the stability of the entire support. At the same time, the locking fixture 50 is used for mutual support and fixation of the structure platform 40. The locking fixture 50 can be adjusted in position relative to the rear double pile 20 and the front double-row PHC pile 30. Such structure design can facilitate the control of the installation accuracy of the berthing component 10 in the later stage.

[0050] Referring to Figures 1 to 2 As shown in the drawings, in order to facilitate the description and improve the installation adaptability and ensure the installation accuracy, the structure platform 40 includes the beam 41 and the longitudinal beam 42. The beam 41 is arranged on both sides of the rear double pile 20 and is installed on the locking fixture 50. The longitudinal beam 42 is arranged on both sides of the front double-row PHC pile 30 and is installed on the lower locking fixture 50. One end of the beam 41 close to the front double-row PHC pile 30 is placed on the longitudinal beam 42. Both ends of the longitudinal beam 42 are connected to the locking fixture 50 of the rear double pile 20 through the supporting I-beam inclined beam 43. The supporting I-beam inclined beam 43 is connected to the upper locking fixture 50 of the front double-row PHC pile 30. The outer side of the middle part of the longitudinal beam 42 and the area between the two ends of the beam 41 away from the front double-row PHC pile 30 are both installed with the berthing component 10.

[0051] The beam 41 and the locking fixture 50 can be connected by welding or bolts, which is designed according to the actual use requirement. The longitudinal beam 42 also has the same principle. Actually, the longitudinal beam 42 and the beam 41 are perpendicular to each other. However, if they are installed at the same height, interference will occur. Therefore, in the present application, two layers of locking fixtures 50 are used for fixation on the front double-row PHC pile 30. The longitudinal beam 42 is installed on the lower locking fixture 50. The upper locking fixture 50 is reserved for installation position, which is convenient for the installation of the supporting I-beam inclined beam 43 or the extension part of the beam 41 in the later stage. This ensures that the extension structure of the beam 41 and the supporting I-beam inclined beam 43 in the later stage forms a relatively flat platform, which is beneficial to the installation of the berthing component 10 in the later stage.

[0052] In addition, since the rear double piles 20 include two inclined pipe piles, each cross beam 41 is fixedly installed on one side of the locking fixing member 50 on the two inclined pipe piles, and the longitudinal beam 42 is also designed in the same way. In the present application, the supporting I-beam inclined beam 43 is the main connecting structure between the front double-row PHC pile 30 and the rear double pile 20, and also adapts to the different directions between the front double-row PHC pile 30 and the rear double pile 20. It should be noted that the front double-row PHC pile 30 is provided with double-layer locking fixing members 50, which is to facilitate the adjustment of the installation position during installation and ensure the installation accuracy.

[0053] In some possible implementations, in order to increase the strength, the middle part between the two longitudinal beams 42 is connected by a connecting beam 44, and the upper surface of the connecting beam 44 is arranged in the same plane with the upper surface of the cross beam 41 and the upper surface of the supporting I-beam inclined beam 43. Such a design is mainly to facilitate the later installation and ensure the installation accuracy of the berthing member 10.

[0054] Referring to Figures 1 to 2 In order to facilitate the installation of the berthing member 10, the middle part of the longitudinal beam 42 is provided with two cantilever beams 45, and one end of the two cantilever beams 45 close to the rear double pile 20 is connected and fixed with the upper locking fixing member 50 of the front double-row PHC pile 30. Such a design can effectively ensure the connection strength of the cantilever beam 45 and avoid the cantilever beam 45 from overturning at the outer end under stress. One berthing member 10 is installed on the area between the two cantilever beams 45 close to the front double-row PHC pile 30, and the two sides of the berthing member 10 are placed on the two cantilever beams 45. Such a design can effectively move the weight of the berthing member 10 to the end of the front double-row PHC pile 30, thereby reducing the risk of the cantilever beam 45 at the outer end from overturning under stress. It should be noted that the cantilever beam 45 and the locking fixing member 50 are connected by welding, and the connection strength between the cantilever beam 45 and the longitudinal beam 42 is also ensured by welding.

[0055] In the improved embodiment described above, the two cantilever beams 45 and the two cross beams 41 are provided with cantilever channel steels 46, and all the cantilever channel steels 46 are connected with the side surface of the corresponding side of the berthing member 10. In the improved scheme described above, in order to increase the installation strength, a reinforcing steel plate 11 is welded on the opposite side walls of each berthing member 10, and one end of the cantilever channel steel 46 is welded on the reinforcing steel plate 11. Such a design is mainly to ensure that the berthing member 10 can be stably installed on the cantilever beam 45; in addition, the design of the cantilever channel steel 46 is to facilitate the later laying of the platform and provide installation support.

[0056] Referring to Figure 1 In order to facilitate the later construction and ensure the safety of construction, the longitudinal beam 42, the cross beam 41 and the cantilever beam 45 are all paved with a thick wood template layer 47.

[0057] Referring to Figure 3 As shown in the drawings, in order to facilitate installation and fixation and to be suitable for adjusting the position during installation, the locking and fixing member 50 is actually a hoop in the present application, and all the locking and fixing members 50 include two hoop half-rings 51 which are bolted at both ends to form a loop, and the loop is respectively sleeved on the front double-row PHC pile 30 and the rear double-row pile 20, so that the installation position can be adjusted according to the actual use requirements during installation. Both ends of the two hoop half-rings 51 after buckling form a support bracket 52, the cross beam 41 is arranged on the support bracket 52 of the rear double-row pile 20, the longitudinal beam 42 is arranged on the support bracket 52 of the lower layer of the front double-row PHC pile 30, and the supporting I-beam 43 is installed on the support bracket 52 of the upper layer of the front double-row PHC pile 30.

[0058] In the above embodiment, the support bracket 52 and the supporting I-beam 43, the longitudinal beam 42 and the cross beam 41 are connected by welding. In the actual design process, the width of the hoop half-ring 51 is less than or equal to the height of the cross beam 41 and greater than the height of the longitudinal beam 42, so that the design facilitates the adjustment of the position of the hoop half-ring 51 between the upper and lower layers of the front double-row PHC pile 30 in the later period. In addition, in the actual installation process, the front double-row PHC pile 30 and the rear double-row pile 20 are both in a non-vertical state, so in order to install, some welding structures are needed between the support bracket 52 and the supporting I-beam 43, the longitudinal beam 42 and the cross beam 41 to ensure that the above structures have sufficient connecting surfaces and ensure the reliability of the connection.

[0059] Referring to Figures 1 to 4 The present application also provides a construction method for the front double-row pile supporting beam and the berthing member, which comprises the following steps:

[0060] S100, preliminary preparation for erection: building the berthing member 10 according to the requirements; preparing the hoop according to the actual construction conditions, selecting a pair of hoops and welding the cantilever beam 45 on the pair of hoops; measuring whether the front double-row PHC pile 30 is deviated, if it is deviated, marking the deviation on the front double-row PHC pile 30, and marking the hoop installation position on the front double-row PHC pile 30 and the rear double-row pile 20 respectively;

[0061] S200, installation of the foundation: installing the lower layer of the hoop on the front double-row PHC pile 30, laying the I-beam on both sides of the front double-row PHC pile 30 along the direction of the front double-row PHC pile 30 to form the longitudinal beam 42 on the lower layer of the hoop, and welding and fixing the longitudinal beam 42 and the support bracket 52 on the lower layer of the hoop after leveling by measurement;

[0062] S300, main body frame construction: install the hoop on the rear double piles 20, then weld the I-beams on both sides of the hoop along the direction of the rear double piles 20 to form the cross beams 41, the corresponding ends of the cross beams 41 on both sides are close to but not connected with the front double PHC piles 30 and form overhangs; the end of the overhang close to the front double PHC piles 30 is above the longitudinal beams 42 and connected with the longitudinal beams 42 by welding; the cross beams 41 are perpendicular to the longitudinal beams 42;

[0063] S400, enlarged portion construction: install the hoops with overhanging beams 45 on the front double PHC piles 30, adjust the installation positions of the two hoops on the front double PHC piles 30 according to the previous offset amount to control the relative distance between the overhanging beams 45 on the two hoops; lay the supporting I-beam inclined beams 43 on the upper parts of both ends of the longitudinal beams 42 respectively to connect the supporting corbels 52 on the nearest hoops on the rear double piles 20, after leveling, point weld and fix the supporting I-beam inclined beams 43 with the upper hoops on the front double PHC piles 30;

[0064] S500, hoisting the berthing member: mark the boundary points of the installation of the berthing member 10 on the enlarged portion and the main body frame according to the preset position, lay the construction platform outside the installation area surrounded by the boundary points on the enlarged portion and the main body frame; after the berthing member 10 is hoisted to the preset position, use the wooden square to constrain and position the installation position of the berthing member 10 by using the already marked boundary points; after confirming that the installation position of the berthing member 10 is correct, remove the hoisting equipment and complete the hoisting work of the berthing member 10.

[0065] In step S100, the thickness of the hoop welded with the overhanging beam 45 is greater than the thickness of all other hoops, the purpose of such design is to facilitate the improvement of the connection strength between the overhanging beam 45 and the hoop, at the same time, the overhanging beam 45 serves as the supporting structure of the outermost berthing member 10, therefore, by increasing the thickness of the hoop, the installation strength of the entire support frame can be ensured.

[0066] The present application is suitable for the support erection method of the front double-pile supporting beam 41 and the docking component 10 structure construction, the special clamp is installed on the front double-row PHC pile 30 as the anchoring point, the front side of the clamp is welded with the cantilever beam 45 as the support docking component 10 structure, the whole installation mode is simple, convenient and reliable; the double-layer clamp is used on the front double-row PHC pile 30 as the support of different layer structures, such design can not only ensure the stability of installation, but also facilitate the adjustment in the later period, especially the installation levelness of the cantilever beam 45, thereby ensuring the installation accuracy of the docking component 10. In addition, the supporting I-beam inclined beam 43 is used to connect the beam 41 on the upper end of the front double-row PHC pile 30, which can ensure the stability of the connection between the front double-row PHC pile 30 and the rear double pile 20, and adapt to the different directions of the front double-row PHC pile 30 and the rear double pile 20. In the present application, the position of the docking component 10 can be accurately controlled by fine-tuning the clamp, so that the installation accuracy of the docking component 10 can be controlled; by prefabricating the docking component 10, the installation efficiency can be effectively improved.

[0067] In the above embodiment, in step S100, in order to improve the installation accuracy, the docking component 10 is installed in the process to increase the installation accuracy; the specific steps of building the docking component 10 in step S100 include:

[0068] S110, analyze the drawing, mark the specific position of the left and right sides of the straight-thread sleeve 12 cm away from the edge according to the elevation data of the docking component 10, and open a hole on the forming mold of the docking component 10 after the position is determined; four straight-thread sleeves with specifications of M20 and lengths of 12 cm are pre-buried on the left and right sides of the forming mold of the docking component 10;

[0069] S120, a curved steel bar is added to each straight-thread sleeve, and then a steel plate with specifications of 100*100*10 mm is welded outside each straight-thread sleeve;

[0070] S130, before the forming mold of the docking component 10 is closed, recheck to ensure that the curved steel bar is tightly fitted into the sleeve and the flatness of the steel plate; foam jointing agent is used to fill and block one end of the straight-thread sleeve in the forming mold, the bolt at the outer end of the straight-thread sleeve is tightened, and then the concrete is poured in the forming mold;

[0071] S140, after the mooring component 10 is formed, the forming mold is removed, all the straight thread sleeves are cleaned and the bolts are unscrewed; the reinforced steel plate 11 with a size of 200*100*20mm is holed according to the positions of all the straight thread sleeves on each side of the mooring component 10, then the holed reinforced steel plate 11 is installed on the mooring component 10, and the reinforced steel plate 11 is fixed on the side of the mooring component 10 through the bolts; two cantilevered channel steels 46 are welded on each 200*100*20mm reinforced steel plate 11 outward in parallel, and the bottom surfaces of the two cantilevered channel steels 46 are on the same level.

[0072] The straight thread sleeves are pre-buried when the mooring component 10 is produced, so that the elevation of the mooring component 10 can be accurately controlled during installation, the installation accuracy in the later stage is ensured, and the installation and reinforcement work in the later stage is facilitated. Meanwhile, the straight thread sleeves are pre-buried in the mooring component 10, the bolts are tightened to clamp the reinforced steel plate 11, and the double-spliced cantilevered channel steels 46 are welded on the two sides of the reinforced steel plate 11, so that the installation of the mooring component 10 can be quickly completed by directly being placed on the cantilevered beam 45, and the construction efficiency is greatly improved. In addition, the steel plate is added in step S120, so that the tensile capacity of the straight thread sleeve is ensured, and the cantilevered channel steel 46 is welded on the 200*100*20mm reinforced steel plate 11, so that the welding and reinforcement are facilitated, and the hoisting and fixing work of the mooring component 10 in the later stage is facilitated. In addition, two cantilevered channel steels 46 are designed, so that the installation level accuracy of the mooring component 10 can be controlled during hoisting, and the overturning of the mooring component 10 during installation is avoided.

[0073] Referring to Figure 4 S200, the method specifically comprises the following steps:

[0074] S210, the deformation and size of the lower hoop are checked, and then the hoop is assembled; a small wooden board is clamped at the joint of the two halves of the hoop, the hoop is assembled by slightly tightening the bolts, the lower hoop is hoisted and installed on the front double-row PHC pile 30 by using a crane, when the hoop reaches the specified elevation, the direction of the supporting bracket 52 is adjusted, then the small wooden board is removed, and the installation of the lower hoop on the front double-row PHC pile 30 is completed by tightening the bolts;

[0075] S220, I-beams are laid on both sides of the front double-row PHC pile 30 along the direction of the front double-row PHC pile 30 to form longitudinal beams 42, and after measurement and leveling, the longitudinal beams 42 are welded and fixed with the supporting brackets 52 on the lower hoop.

[0076] Specifically, in the above embodiment, the installation of the lower layer of the hoop is taken as the installation basis, and in the process of adjusting the lower layer of the hoop, the lower layer of the hoop on one pile of the front double-row PHC pile 30 is first fixed, and then the other hoop is adjusted, thereby improving the installation efficiency. After the longitudinal beam 42 is installed, the height difference between the two ends of the two longitudinal beams 42 is measured and recorded again, which is beneficial to the installation of the supporting I-beam 43 in the later period. In addition, in the above embodiment, the longitudinal beam 42 is perpendicular to the cross beam 41; the overhanging portion of the cross beam 41 formed in step S300 is located above the longitudinal beam 42 and is connected with the longitudinal beam 42 by welding.

[0077] In an embodiment of the present application, in step S300, the basic operation of the installation of the hoop in the process of building the main frame is as follows: the deformation and size of the hoop are checked, and then the hoop is assembled; a small wooden board is clamped at the joint of the two halves of the hoop, the hoop is assembled by slightly tightening the bolts, the hoop is hoisted and installed on the rear double-row pile 20 by using a crane, when the hoop is lowered to the specified height, the direction of the supporting bracket 52 is adjusted, then the small wooden board is removed, the bolts are tightened to complete the installation of the hoop on the rear double-row pile 20, and then I-beams are welded on the two supporting brackets 52 of each hoop along the two sides of the direction of the rear double-row pile 20 to form cross beams 41, the cross beams 41 are perpendicular to the longitudinal beams 42; the corresponding end of the cross beams 41 on the two sides is close to but not connected with the front double-row PHC pile 30 and forms an overhanging portion, and the overhanging portion is welded and fixed with the nearest longitudinal beam 42. If the gap between the overhanging portion and the nearest longitudinal beam 42 is too large, a steel plate needs to be added for support welding to ensure the connection strength. It should be noted that the two cross beams 41 need to be leveled on the supporting bracket 52 before being welded and fixed.

[0078] In an embodiment of the present application, after the main frame is laid, the expansion needs to be laid, specifically, in step S400, the following steps are included:

[0079] S410, check the deformation and size of the two hoops with overhanging beams 45, and then assemble them; a small wooden board is clamped at the joint of the two halves of the hoop, the hoop is assembled by slightly tightening the bolts, and the hoop with the overhanging beam 45 is hoisted and installed on each pile on the front double-row PHC pile 30 by using a crane; when the hoop with the overhanging beam 45 is lowered to the specified height, the installation positions of the two hoops on the front double-row PHC pile 30 are adjusted according to the previous offset to control the relative distance between the overhanging beams 45 on the two hoops; after the distance between the two overhanging beams 45 is adjusted, the small wooden board is removed, and the bolts are tightened to complete the installation of the hoop with the overhanging beam 45;

[0080] S420, respectively laying support I-beam inclined beams 43 on the upper part of the two ends of the longitudinal beam 42, the outer end of the support I-beam inclined beam 43 is connected to the support bracket 52 on the nearest hoop of the rear row of double piles 20, after leveling, the connection between the support I-beam inclined beam 43 and the longitudinal beam 42, the support I-beam inclined beam 43 and the support bracket 52 on the nearest hoop of the rear row of double piles 20 is welded and fixed.

[0081] In step S410, since both piles of the front row of double piles PHC 30 are inclined to the rear row of double piles 20, there will inevitably be different degrees of deviation in the actual installation process, so the installation height of the two hoops with cantilever beams 45 is adjusted according to the aforementioned measurement deviation value, which can adapt to the installation height of the cross beam 41 and the longitudinal beam 42. In addition, the cantilever beam 45 is directly fixed and installed on the hoop, and the outer end is connected to the outermost longitudinal beam 42, so in the actual installation process, when the cantilever beam 45 passes above the outermost longitudinal beam 42, the levelness of the cantilever beam 45 needs to be adjusted, and if the height of the two ends of the longitudinal beam 42 is uneven, a steel plate can be welded between the longitudinal beam 42 and the cantilever beam 45 to ensure the levelness of the two cantilever beams 45.

[0082] In the above step S420, the welding leveling method of the support I-beam inclined beam 43 is as follows:

[0083] S421, the connection between the support I-beam inclined beam 43 and the longitudinal beam 42, the support I-beam inclined beam 43 and the support bracket 52 on the nearest hoop of the rear row of double piles 20 is spot welded and fixed, and then the support I-beam inclined beam 43 and the support bracket 52 on the hoop of the upper layer of the front row of double piles PHC 30 are spot welded and preliminarily fixed;

[0084] S422, after the spot welding of the support I-beam inclined beam 43 and the support bracket 52 on the front row of double piles PHC 30, the nearest support bracket 52 on the hoop of the rear row of double piles 20 is completed, the levelness is measured again, if the levelness of the support I-beam inclined beam 43 is qualified, the support I-beam inclined beam 43 and the two support brackets 52 are fully welded, if the levelness of the support I-beam inclined beam 43 is not qualified, the welding points of the support I-beam inclined beam 43 and the support bracket 52 on the front row of double piles PHC 30 are knocked off, then the positions of the two relative positions are spot welded until the levelness of the support I-beam inclined beam 43 is qualified; after the levelness of the support I-beam inclined beam 43 is qualified, the support I-beam inclined beam 43 and the two support brackets 52 are fully welded;

[0085] S423, finally weld the connection between the longitudinal beam 42 and the support I-beam inclined beam 43.

[0086] In the above embodiment, the installation flatness of the supporting I-beam inclined beam 43 is ensured by the above leveling method, so as to facilitate the subsequent platform laying.

[0087] In step S400, the height difference between the supporting I-beam inclined beam 43 and the longitudinal beam 42 is reserved. More specifically, before welding between the supporting I-beam inclined beam 43 and the longitudinal beam 42 and the supporting I-beam inclined beam 43 and the support bracket 52 on the nearest hoop on the rear row of double piles 20, if direct leveling cannot be performed, the upper surface of the supporting I-beam inclined beam 43 is leveled with the upper surface of the cross beam 41 at the same height based on the end of the supporting I-beam inclined beam 43 close to the cross beam 41, and then the other end of the supporting I-beam inclined beam 43 is raised by a steel plate with a suitable thickness, and then welding and fixing are performed.

[0088] In step S400, all the hoops are tightened by the intelligent torque wrench symmetrically on both sides of the support bracket 52 during the tightening of the bolts, until all the nuts are tightened, and finally the bolt final tightening torque value is checked. In fact, in steps S200-S300, the installation and acceptance of the hoops on the rear row of double piles 20 and the lower hoops on the front row of double PHC piles 30 are also performed in the same way.

[0089] In step S500, the specific operation of the construction platform includes: laying wooden boards and channel steels with the same height at intervals outside the installation area surrounded by the expansion and the upper boundary points of the main body frame, the channel steels are connected and fixed with the cross beam 41, the longitudinal beam 42 and the supporting I-beam inclined beam 43 by spot welding; and laying a thick wooden template layer 47 on the wooden boards and channel steels. The specification of the wooden board is 10 cm x 10 cm, and the channel steel is also 10 cm wide, so as to ensure that the laid construction platform is relatively regular.

[0090] After the step of hoisting the berthing member 10 in step S500, the following steps are further included:

[0091] The two longitudinal beams 42 are connected by welding a connecting beam 44 in the area between the two piles of the front row of double PHC piles 30, and the connecting beam 44 is welded to the side corresponding to the berthing member 10 away from the rear row of double piles 20.

[0092] Among them, since the outermost longitudinal beam 42 is used to support the two cantilever beams 45, by designing the connecting beam 44, the two longitudinal beams 42 are fixed to each other, and the tensile strength of the outermost longitudinal beam 42 is also improved.

[0093] The above embodiment is only a preferred embodiment of the present application, and cannot be used to limit the scope of protection of the present application. Any non-essential changes and substitutions made by those skilled in the art based on the present application are within the scope of protection of the present application.

Claims

1. A construction method for front-end double-pile supporting beams and mooring components, characterized in that: The following steps are involved: Pre-construction preparations: Build mooring components as needed; prepare clamps based on actual construction conditions, select a pair of clamps, and weld cantilever beams to both clamps; measure the front double-row PHC piles for deviation; if so, mark the deviation on the front double-row PHC piles and mark the clamp installation positions on the front double-row PHC piles and the rear double-row PHC piles respectively; Installation foundation construction: Install the lower layer of clamps on the front double-row PHC piles. Lay I-beams on both sides of the clamps on the lower layer of the front double-row PHC piles along the direction of the front double-row PHC piles to form a longitudinal beam. After measurement and leveling, weld the longitudinal beam to the supporting bracket on the lower layer of clamps; Main frame construction: Install clamps on the rear double piles, then weld I-beams on both sides of the clamps along the direction of the rear double piles to form a crossbeam, which is perpendicular to the longitudinal beams. The corresponding ends of the crossbeams on both sides are close to but not connected to the front double row of PHC piles to form a cantilever, which is welded and fixed to the nearest longitudinal beam. Construction of the expansion area: Install clamps with cantilever beams on the front double-row PHC piles. Adjust the installation position of the two clamps on the front double-row PHC piles based on the previously measured offset to control the relative spacing of the cantilever beams on the two clamps. Lay supporting I-beams on the upper part of each end of the longitudinal beam to connect to the support brackets on the nearest clamps on the rear double-row piles. After leveling, weld the supporting I-beams to the upper clamps on the front double-row PHC piles. Lifting the mooring components: mark the boundary points for the installation of the mooring components on the expansion part and the main frame according to the preset positions, and lay a construction platform outside the installation area enclosed by the boundary points on the expansion part and the main frame; After the mooring component is hoisted to the preset position, use wooden strips and marked boundary points to constrain and locate the installation position of the mooring component; after confirming that the installation position of the mooring component is correct, remove the hoisting equipment and complete the hoisting work of the mooring component.

2. A construction method for front-end double-pile supporting beams and mooring components according to claim 1, characterized in that: The steps of constructing the installation base specifically include the following steps: Check the deformation and size of the lower clamp, and then assemble the clamp; clamp a small wooden board at the joint between the two halves of the clamp, slightly tighten the bolts to assemble the clamp, use a crane to hoist the lower clamp onto the front double-row PHC pile, and when the clamp reaches the specified elevation, adjust the direction of the supporting bracket, then remove the clamped small wooden board, and tighten the bolts to complete the installation of the lower clamp on the front double-row PHC pile; I-beams are laid on both sides of the lower clamp of the front double-row PHC piles along the direction of the front double-row PHC piles to form longitudinal beams. After measurement and leveling, the longitudinal beams are welded and fixed to the supporting brackets on the lower clamp.

3. The construction method for the front double-pile supporting beam and the mooring member according to claim 1, characterized in that: The steps of constructing the enlarged area specifically include the following steps: Check the deformation and size of the two clamps with cantilever beams, and then assemble them; clamp a small wooden board at the joint between the two halves of the clamp, slightly tighten the bolts to assemble the clamps, and use a crane to hoist the clamps with cantilever beams onto each of the double-row PHC piles at the front; when the clamps with cantilever beams are lowered to the specified elevation, adjust the installation positions of the two clamps on the double-row PHC piles at the front according to the previous deviation to control the relative spacing of the cantilever beams on the two clamps; after adjusting the spacing between the two cantilever beams, remove the clamped small wooden board and tighten the bolts to complete the installation of the clamps with cantilever beams; Supporting I-beams are laid on the upper part of both ends of the longitudinal beam respectively. The outward end of the supporting I-beam is connected to the supporting corbel on the nearest clamp on the rear double piles. After leveling, the connections between the supporting I-beam and the longitudinal beam, and between the supporting I-beam and the supporting corbel on the nearest clamp on the rear double piles are welded and fixed.

4. A construction method for front-end double-pile supporting beams and mooring components according to claim 3, characterized in that: The welding and leveling method of the supporting I-beam oblique beam is as follows: Spot weld the connections between the supporting I-beam and the longitudinal beam, and between the supporting I-beam and the support bracket on the nearest clamp on the rear double piles. Then, spot weld the supporting I-beam and the support bracket on the upper clamp of the front double-row PHC piles to preliminarily secure them. After the spot welding of the supporting I-beam oblique beam and the supporting brackets on the front double-row PHC piles and the supporting brackets on the nearest hoop on the rear double piles is completed, a secondary level measurement is performed. If the levelness of the supporting I-beam oblique beam is qualified, full welding is performed between the supporting I-beam oblique beam and the two supporting brackets. If the levelness of the supporting I-beam oblique beam is unqualified, knock out the welding points on the supporting I-beam oblique beam and the supporting brackets on the front double-row PHC piles, and then spot welding is performed between the supporting I-beam oblique beam and the supporting brackets on the front double-row PHC piles until the levelness of the supporting I-beam oblique beam is qualified. After the horizontality of the supporting I-beam oblique beam is qualified, the supporting I-beam oblique beam and the two supporting brackets are fully welded; Finally, weld the joints between the longitudinal beams and the supporting I-beam diagonal beams.

5. The construction method for the front double-pile supporting beam and the mooring member according to claim 3, characterized in that: Before welding the supporting I-beam and the longitudinal beam, and between the supporting I-beam and the supporting bracket on the nearest hoop on the rear double piles, if direct leveling is not possible, take the end of the supporting I-beam close to the crossbeam as the reference, and make the upper surface of the supporting I-beam and the upper surface of the crossbeam at the same horizontal height. At the other end of the supporting I-beam, add a steel plate of appropriate thickness to raise it, and then weld it in place.

6. A construction method for front-end double-pile supporting beams and mooring components according to claim 1 or 3, characterized in that: An adjustment height difference is reserved between the supporting I-beam oblique beam and the longitudinal beam.

7. The construction method for the front double-pile supporting beam and the mooring member according to claim 1, characterized in that: The specific operations of the construction platform include: laying wooden planks and channel steels of the same height at intervals outside the installation area surrounded by the expansion and the upper boundary points of the main frame, and connecting and fixing the channel steels with the crossbeams, longitudinal beams and supporting I-beam diagonal beams by spot welding; and laying a thick wooden formwork layer on the wooden planks and channel steels.

8. The construction method for front-end double-pile supporting beams and mooring components according to claim 1, characterized in that: After the step of hoisting the mooring component, the method further comprises: The two longitudinal beams are connected by welding a connecting beam in the area between the two piles of the front double row PHC piles, and the end of the connecting beam away from the rear double piles is welded to the side corresponding to the berthing component.

9. The construction method for front-end double-pile supporting beams and mooring components according to claim 1, characterized in that: The specific steps for constructing the mooring components include: Analyze the drawings and mark the specific locations of the reinforced straight threaded sleeves on the left and right sides 12 cm away from the edge according to the elevation data of the mooring component. After the locations are determined, drill holes in the forming mold of the mooring component; embed four reinforced straight threaded sleeves with a specification of M20 and a length of 12 cm on each side of the forming mold of the mooring component; An arc-shaped steel bar is installed on each straight thread sleeve, and then a 100*100*10mm steel plate is welded on the outside of each straight thread sleeve; Before closing the forming mold of the mooring component, a second inspection is carried out to ensure that the embedded curved steel bars are close to the sleeve and the flatness of the steel plate; use foam sealant to fill the end of the straight thread sleeve of the sealing bar located in the forming mold, tighten the bolts at the outward end of the straight thread sleeve of the bar, and then pour concrete in the forming mold; After the mooring component is formed, remove the forming mold, clean all the rib straight thread sleeves and unscrew the bolts; make holes on the reinforced steel plate with a specification of 200*100*20mm, referring to the positions of all the rib straight thread sleeves on each side of the mooring component, and then install the 200*100*20mm reinforced steel plate installation opening position on the mooring component, and then fix the 200*100*20mm reinforced steel plate to the side of the mooring component with bolts; weld two cantilever channel steels in parallel outward on each 200*100*20mm reinforced steel plate, and the bottom surfaces of the two cantilever channel steels are at the same level.

10. The construction method for front-end double-pile supporting beams and mooring components according to claim 1, characterized in that: The thickness of the hoop welded with the cantilever beam should be greater than the thickness of all other hoop welds.

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