CN110804948B - Construction method of steel pipe pile bailey truss foundation full-space bracket system - Google Patents
Construction method of steel pipe pile bailey truss foundation full-space bracket system Download PDFInfo
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- CN110804948B CN110804948B CN201911052766.3A CN201911052766A CN110804948B CN 110804948 B CN110804948 B CN 110804948B CN 201911052766 A CN201911052766 A CN 201911052766A CN 110804948 B CN110804948 B CN 110804948B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 262
- 239000010959 steel Substances 0.000 title claims abstract description 262
- 238000010276 construction Methods 0.000 title claims abstract description 75
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 59
- 238000009826 distribution Methods 0.000 claims description 41
- 238000005096 rolling process Methods 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 13
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D13/00—Accessories for placing or removing piles or bulkheads, e.g. noise attenuating chambers
- E02D13/04—Guide devices; Guide frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/24—Prefabricated piles
- E02D5/28—Prefabricated piles made of steel or other metals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
- E02D5/526—Connection means between pile segments
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Abstract
The invention relates to a construction method of a steel pipe pile bailey truss foundation full-space bracket system, which comprises the following construction steps: 1) construction preparation; 2) erecting a steel pipe pile guide construction platform; 3) mounting a pile cap of the steel pipe pile; 4) guiding and driving the steel pipe pile; 5) lengthening the steel pipe pile; 6) arranging and positioning the profile steel bottom beam; 7) b, laying a Bailey beam; 8) distributing beams; 9) laying a platform plate; 10) and (4) carrying out counter-force preloading on the platform. The invention has the beneficial effects that: the construction trestle is used as a support body of the strut longitudinal beam, the strut cross beam is arranged on the cantilever section of the strut longitudinal beam, and the position of the guide groove pipe is limited by the strut longitudinal beam and the strut cross beam, so that the difficulty in building a steel pipe pile guide construction platform is reduced, and the structural stability is improved; the outer side wall of the steel pipe pile is provided with the sliding anchor ear and the sliding control plate, the sliding control plate is connected with the position control groove plate, and the transverse position of the steel pipe pile can be limited through the position control groove plate.
Description
Technical Field
The invention relates to a construction method of a steel pipe pile Bailey frame foundation full-space bracket system, belongs to the field of bridge engineering, and is suitable for construction engineering of the steel pipe pile Bailey frame foundation full-space bracket.
Background
Domestic cast-in-place roof beam construction support form is various, and the reasonable selection support type has important influence to promoting construction quality and efficiency. The steel pipe pile bailey frame foundation full-hall support has the advantages of being high in strength, good in rigidity and stability and the like, and is often used as a construction support form of a cast-in-place concrete continuous beam bridge. However, in the construction process of erecting the steel pipe pile bailey truss foundation full-hall bracket system, the problems of low steel pipe pile driving and positioning precision, high difficulty in adjusting the elevation of the bailey beam, difficulty in platform pre-pressing construction and the like often exist, and the construction quality and the construction efficiency of the bracket system are seriously influenced.
The existing construction platform system on water that is used for crossing cast-in-place box girder of river bridge among the prior art, its characterized in that: the steel pipe pile comprises a steel pipe pile, a cross beam, a longitudinal beam, a full-space bracket and a template; the steel pipe piles are arranged at intervals in a row along the width direction of the river channel; the cross beams are horizontally connected to the top surfaces of the steel pipe piles in the same horizontal row in a penetrating manner; the longitudinal beams are vertically arranged on the top surface of the cross beam; the full hall support is erected on the top surface of the longitudinal beam. Although the construction platform system can meet the requirement of construction platform erection, the lifting support can be still provided in the aspects of steel pipe pile driving positioning precision control, low-damage and high-efficiency connection of the platform system and the like.
In summary, the prior art obtains a better construction effect under a proper working condition, but the problems of steel pipe pile driving positioning precision, Bailey beam elevation adjusting difficulty, platform construction stress performance and the like are not well solved. In view of this, the invention is urgently needed to provide a construction method of a steel pipe pile bailey truss foundation full framing system, which can improve the construction quality and the construction efficiency of the framing system, reduce the on-site construction difficulty and improve the stress performance of a platform structure.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the construction method of the steel pipe pile bailey truss foundation full support system, which can improve the construction quality and the construction efficiency of the support system and reduce the field construction difficulty.
The construction method of the steel pipe pile bailey truss foundation full-hall bracket system comprises the following construction steps:
1) construction preparation: building a construction steel trestle on site, surveying and mapping to determine the driving position of the steel pipe pile, and preparing construction devices and materials required by construction;
2) erecting a steel pipe pile guiding construction platform: laying two rows of strut longitudinal beams on the construction steel trestle, respectively laying a bridge bottom hanging plate and a beam top hanging plate on the lower surface of the construction steel trestle and the upper surface of the strut longitudinal beam, and applying fastening force to the bridge bottom hanging plate and the beam top hanging plate through longitudinal beam anchor bars; two strut beams are arranged between the two rows of strut longitudinal beams, and the strut longitudinal beams and the strut beams are firmly connected through bolts or welding; a guide groove pipe is inserted in a cavity formed by enclosing the strut longitudinal beam and the strut cross beam, and groove pipe angle ribs are respectively arranged between the guide groove pipe and the strut longitudinal beam as well as between the guide groove pipe and the strut cross beam;
3) installing a pile cap of the steel pipe pile: the method comprises the following steps that a bearing hoop is arranged on a steel pipe pile, a hoop side supporting plate is arranged on the outer side of the bearing hoop, reinforcing support columns which are in mirror symmetry are arranged on the upper surface of the hoop side supporting plate, and hoop side inclined struts are arranged between the lower surface of the hoop side supporting plate and the bearing hoop; the top end of the steel pipe pile is provided with an adjustable pile cap, and the adjustable pile cap is firmly connected with the steel pipe pile through a pile cap fastening bolt; a column top support body is arranged at the top end of the reinforcing support column; checking the elevation of the column top support body and the adjustable pile cap, arranging a beam bottom sealing layer on the lower surface of a pile top steel beam, and hoisting the pile top steel beam to the upper surfaces of the column top support body and the adjustable pile cap;
4) and (3) guiding and driving of the steel pipe pile: a position control body bottom plate and a position control body supporting column which are in mirror symmetry are sequentially arranged on the strut longitudinal beam outside the guide groove pipe, and a position control bolt and a position control groove plate are arranged on the position control body supporting column towards the side of the guide groove pipe; a flexible pipe cap is arranged at the top end of the guide groove pipe; hoisting the steel pipe pile to the upper part of the guide groove pipe by adopting hoisting equipment, and enabling the axis of the steel pipe pile to be superposed with the guide groove pipe; after the bottom end of the steel pipe pile is inserted into the guide groove pipe, a sliding hoop is arranged on the outer side of the steel pipe pile, and a sliding control plate on the outer side wall of the sliding hoop is inserted into a pile sinking guide groove of the position control groove plate;
5) steel pipe pile lengthening construction: a connecting pipe hoop and a guide arc plate are arranged on the supporting pipe section; a baffle bottom plate is arranged at the outer side of the connecting pipe hoop; a cross-brace baffle is arranged on the upper surface of the baffle bottom plate, and a hoop-side inclined strut is arranged between the lower surface of the baffle bottom plate and the connecting pipe hoop; the transverse positions of the guide arc plates are limited by the first ring plate and the second ring plate respectively; a position-correcting cross brace and a cross brace arc plate are sequentially arranged between the cross brace baffle and the extension pipe section, and an arc plate rotating hinge is arranged between the cross brace arc plate and the position-correcting cross brace;
6) and (3) laying and positioning the profile steel bottom beam: after the steel pipe pile is driven, sequentially laying a supporting hoop and a hanging hoop on the steel pipe pile from bottom to top, and arranging a sling rotating wheel and a lifting sling which are opposite in mirror image on the hanging hoop; a stay bar adjusting body and a stay bar pressing plate are arranged between the support hoops which are opposite in mirror image; the upper surface of the lifting platform is connected with the lifting sling, and the lower surface of the lifting platform limits the position of the stay bar pressing plate through a pressing plate limiting plate; the height of the lifting platform is controlled by lifting slings and the strut adjusting bodies; placing the profile steel bottom beam in a profile steel embedding groove at the top end of the steel pipe pile; arranging a position correction hoop on a steel pipe pile at a position needing profile steel bottom beam elevation adjustment, and controlling the elevation of the stay bar pressing plate and the profile steel bottom beam through position correction bolts on two sides of the position correction hoop; a seam adjusting plug is arranged in a gap between the profile steel bottom beam and the profile steel embedding groove;
7) b, laying a Bailey beam: after the profile steel bottom beams are arranged, the Bailey beams are arranged between two opposite beam side limiting tenons on the profile steel bottom beams; inserting the adjusting support plate into a gap of the Bailey beam needing elevation adjustment, and synchronously applying jacking pressure to the adjusting support plate through jacking control bodies on two sides of the Bailey beam to adjust the elevation of the Bailey beam;
8) distributing beams: hoisting the distribution steel beams to the upper surface of the Bailey beam, arranging a distribution beam positioning body on the Bailey beam, and respectively connecting distribution beam positioning bolts on two sides of a support cap of the adjustment body with the corresponding distribution steel beams; applying transverse jacking force to the distribution steel beam through the distribution beam position control bolt, and correcting the position of the distribution steel beam;
9) laying a platform plate: respectively hoisting the platform plates to the upper surfaces of the distribution steel beams, and checking the plane positions of the steel pipe fixing cylinders on the platform plates;
10) platform counter-force pre-pressing: a bottom reaction plate is arranged on the outer side wall of the reaction hoop on the steel pipe pile; the back pressure applying body is arranged between the top back pressure plate and the platform plate, and applies pressure to the top back pressure plate through the back pressure applying body to complete the counter pressure prepressing of the platform.
Preferably, the method comprises the following steps: step 2) rolling the bridge bottom hanging plate and the beam top hanging plate by adopting steel plates, and arranging longitudinal beam anchor bars between the bridge bottom hanging plate and the beam top hanging plate; the support longitudinal beam and the support cross beam are both made of Bailey beams, and the support cross beam is arranged on the cantilever section of the support longitudinal beam.
Preferably, the method comprises the following steps: step 3) the adjustable pile cap consists of a pile cap sleeve, a pile cap transverse baffle and a pile cap side baffle, the pile cap side baffles which are opposite in mirror image are enclosed to form a section steel embedded groove, and a rectangular fastening bolt channel connected with a pile cap fastening bolt is arranged on the pile cap sleeve; the upper surface of the pile cap transverse baffle is provided with a pressing rod embedded groove, the lower surface of the pile cap transverse baffle is provided with a rotating shaft positioning rod, and a pressing rod rotating shaft is arranged on the rotating shaft positioning rod; a pressing plate jacking rod is arranged on the pressing rod rotating shaft, and a built-in pressing plate is arranged at the bottom end of the pressing plate jacking rod; the plane of the pressing plate jacking rod is L-shaped, the top end of the pressing plate jacking rod is provided with a cross rod connected with a pressing rod embedded groove, and an elastic lacing wire is arranged between the adjacent pressing plate jacking rods; the built-in pressure plate is formed by rolling a steel plate, the cross section of the built-in pressure plate is arc-shaped, and the outer diameter of the built-in pressure plate is the same as the inner diameter of the steel pipe pile; the column top support body is formed by rolling a steel plate, the cross section of the column top support body is U-shaped, and the lower surface of the column top support body is welded with the reinforcing support column; the bearing hoop comprises two hoop arc plates, and the two opposite hoop arc plates are connected through hoop bolts.
Preferably, the method comprises the following steps: step 4), the flexible pipe caps are made of rubber materials or plastic materials and are uniformly distributed at intervals along the top ends of the guide groove pipes, and the cross sections of the flexible pipe caps are U-shaped; the sliding control plate is formed by rolling a steel plate, and the plane is rectangular; the position control groove plate is formed by rolling a steel plate, pile sinking guide grooves are formed in the side wall, facing the guide groove pipes, of the position control groove plate, and the other side wall of the position control groove plate is vertically welded and connected with the position control bolts; the position control bolt consists of a position control nut, a first position control screw rod and a second position control screw rod, and the screw fastening directions of the first position control screw rod and the second position control screw rod at two ends of the position control nut are opposite; the sliding hoop comprises two arc hoop plates with the same shape, and fastening force is applied to the arc hoop plates through hoop bolts.
Preferably, the method comprises the following steps: step 5) the supporting pipe section and the extension pipe section are respectively a pipe section which is previously driven in the steel pipe pile and a pipe section to be extended; the position correcting cross brace consists of a first cross brace screw, a cross brace adjusting nut and a second cross brace screw; the cross section of the cross-brace arc plate is arc-shaped and is formed by rolling a steel plate, and the inner diameter of the cross-brace arc plate is the same as the outer diameter of the extension pipe section; the guide arc plates are formed by rolling steel plates, are uniformly distributed at intervals along the annular direction and are connected with the first annular plate and the second annular plate in a welding mode.
Preferably, the method comprises the following steps: step 6), the lifting sling adopts a steel wire rope, one end of the lifting sling is connected with the lifting platform, and the other end of the lifting sling passes through the sling turning wheel and then is connected with a lifting machine; the strut adjusting body consists of a first strut screw, a strut adjusting bolt and a second strut screw, a strut rotating hinge is arranged between the first strut screw and the supporting hoop respectively, and a strut rotating hinge is arranged between the second strut screw and the strut pressing plate; the outer side wall of the position correcting hoop is sequentially provided with a position correcting support rod, a position correcting bolt and a support rod pressing plate; the cross section of the position correcting support rod is L-shaped; the cross section of the seam adjusting plug is in a step shape.
Preferably, the method comprises the following steps: step 8) the distribution beam positioning body comprises a support cap baffle, a regulation body support cap and a distribution beam positioning bolt, and the support cap baffle is vertically welded and connected with the regulation body support cap; the cross section of the support cap of the adjusting body is U-shaped and is formed by rolling a steel plate, and the net width of the U-shaped groove is the same as that of the Bailey beam; the supporting cap baffle is connected with the distribution beam position control bolt through a screw.
Preferably, the method comprises the following steps: and step 10), the top reaction plate is formed by rolling a steel plate, the plane is in a circular ring shape, and the top reaction plate is sleeved on the outer side of the steel pipe fixing cylinder.
The invention has the beneficial effects that:
(1) according to the invention, the construction trestle is used as a support body of the strut longitudinal beam, the strut cross beam is arranged on the cantilever section of the strut longitudinal beam, and the position of the guide groove pipe is limited by the strut longitudinal beam and the strut cross beam, so that the difficulty in building a steel pipe pile guide construction platform is reduced, and the structural stability is improved.
(2) The outer side wall of the steel pipe pile is provided with the sliding anchor ear and the sliding control plate, the sliding control plate is connected with the position control slotted plate, the transverse position of the steel pipe pile can be limited through the position control slotted plate, and the driving of the steel pipe pile cannot be influenced in the position limiting process; meanwhile, the flexible pipe cap is arranged at the top of the guide groove pipe, so that collision between the guide groove pipe and the steel pipe pile can be avoided.
(3) According to the invention, the bearing anchor ear is arranged on the steel pipe pile, and the pile top steel beam can be vertically supported by the pile top supporting body at the top end of the reinforcing support column, so that the stress at the top end of the steel pipe pile is reduced; the inner side of the adjustable pile cap is provided with the pressing plate jacking rod and the built-in pressing plate, and the built-in pressing plate can be firmly connected with the inner side wall of the steel pipe pile by utilizing the pile top steel beam, so that the stress performance of the top end of the steel pipe pile is improved; the profile steel embedded groove on the adjustable pile cap is adopted to provide restraint for the pile top steel beam, the steel pipe pile does not need to be cut on site, and the connecting difficulty of the pile top steel beam can be reduced.
(4) According to the invention, the connecting pipe hoop and the guide arc plate are arranged on the supporting pipe section, so that the requirement of connecting and position controlling of the lengthened pipe section can be met, the difficulty of connecting and position controlling of the steel pipe pile is reduced, and the difficulty of laying a supporting system is reduced.
(5) According to the invention, the supporting hoop and the hanging hoop are sequentially arranged on the steel pipe pile from bottom to top, so that the elevation of the lifting platform can be controlled by the lifting sling and the support rod adjusting body together, the support can be provided for the lifting platform, and the requirement of dynamically adjusting the heights of the supporting hoop and the hanging hoop is met; meanwhile, the elevation of the profile steel bottom beam is accurately controlled through the position correcting hoop and the supporting rod pressing plate, and the difficulty in controlling the elevation of the profile steel bottom beam is reduced.
(6) The jacking control bodies on the two sides of the Bailey beam can synchronously apply jacking pressure to the adjusting supporting plates, so that the difficulty in adjusting the elevation of the Bailey beam is reduced; meanwhile, the adjusting body support cap is arranged on the Bailey beam, and transverse jacking force is applied to the distribution steel beam through the distribution beam position control bolt, so that the precision of position control of the distribution steel beam is improved.
(7) According to the invention, the counter-force anchor ear is arranged on the outer side of the steel pipe pile, the tensioning counter-force is applied to the tensioning anchor bar, and the top pressure is applied to the top counter-force plate through the counter-pressure applying body, so that the difficulty of platform prepressing is reduced.
Drawings
FIG. 1 is a construction flow chart of a steel pipe pile bailey frame foundation full-space bracket system;
FIG. 2 is a schematic diagram of a steel pipe pile guiding construction platform erection and steel pipe pile position control structure;
FIG. 3 is a plan view of the steel pipe pile guide construction platform of FIG. 2;
FIG. 4 is a schematic cross-sectional view of the connection portion of the sliding hoop and the position control groove plate of FIG. 2;
FIG. 5 is a schematic view of the positioning bolt of FIG. 4;
FIG. 6 is a schematic diagram of a steel pipe pile sinking construction structure;
FIG. 7 is a schematic view of the adjustable helmet structure of FIG. 6;
fig. 8 is a schematic view of the structure of the carrier hoop of fig. 6;
FIG. 9 is a schematic view of a steel pipe pile lengthening construction structure;
FIG. 10 is a schematic view of the cross brace arc plate and extension tube section connection of FIG. 9;
FIG. 11 is a cross-sectional view of the guide arc plate configuration of FIG. 9;
FIG. 12 is a schematic view of the layout construction structure of the profiled steel bottom beam and the Bailey beam;
fig. 13 is a schematic view of a top end structure of the steel pipe pile of fig. 12;
FIG. 14 is a schematic view of a positioning construction of a distribution beam;
FIG. 15 is a schematic view of the connection structure of the cap support and the cap support baffle of the adjustment body of FIG. 14;
FIG. 16 is a schematic view of a construction platform reaction force pre-pressing construction structure.
Description of reference numerals: 1-constructing a steel trestle; 2-steel pipe pile; 3-a strut stringer; 4-hanging a bridge bottom plate; 5-hanging the plate on the beam top; 6-longitudinal beam anchor bars; 7-a strut beam; 8-a guide groove pipe; 9-groove pipe angle ribs; 10-carrying anchor ear; 11-hoop side plates; 12-a reinforcing brace; 13-hoop side sprag; 14-adjustable pile caps; 15-pile cap fastening bolt; 16-a column top support; 17-pile top steel beam; 18-a bottom seal layer; 19-a position control body bottom plate; 20-a position control body bracing column; 21-a position control bolt; 22-a position control groove plate; 23-a flexible pipe cap; 24-a sliding hoop; 25-a sliding control plate; 26-pile sinking guide groove; 27-a support tube section; 28-a tube cuff; 29-a guide arc plate; 30-baffle bottom plate; 31-a cross brace baffle; 32-stay bar rotation hinge; 33-a first ring plate; 34-a second ring plate; 35-extension pipe section; 36-correcting the position cross brace; 37-cross bracing arc plates; 38-arc plate rotation hinge; 39-a position correction support rod; 40-a support cuff; 41-hanging a ferrule; 42-a sling wheel; 43-a lifting sling; 44-a strut adjuster; 45-brace bar hold-down plate; 46-a lifting platform; 47-platen limit plate; 48-profiled steel bottom beam; 49-section steel embedded groove; 50-aligning hoop; 51-a position correcting bolt; 52-second stay screw; 53-seam adjusting plugs; 54-beret beam; 55-limiting falcon on the beam side; 56-adjusting the supporting plate; 57-jacking the control body; 58-adjusting body support cap; 59-distribution beam position control bolts; 60-distributing the steel beams; 61-a platform plate; 62-steel tube fixing cylinder; 63-a counter-force hoop; 64-bottom reaction plate; 65-top reaction plate; 66-stretching anchor bars; 67-counter pressure applying body; 68-pile cap sleeve; 69-pile cap transverse baffle; 70-pile cap side baffles; 71-a strut adjusting bolt; 72-a compression bar embedding groove; 73-rotating shaft positioning rod; 74-a strut shaft; 75-pressing plate top pressure rod; 76-built-in platen; 77-elastic lacing wire; 78-hoop arc plates; 79-anchor bolt; 80-position control nuts; 81-a first position control screw; 82-a second position control screw; 83-first stay rod screw; 84-a first cross brace screw; 85-cross brace adjusting nut; 86-a second cross brace screw; 87-a pulling mechanism; 88-fastening bolt sliding groove; 89-distribution beam aligning body; 90-support the cap baffle.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Referring to fig. 1, the construction method of the steel pipe pile bailey truss foundation full framing system comprises the following construction steps:
1) construction preparation: building a construction steel trestle 1 on site, surveying and mapping to determine the driving position of the steel pipe pile 2, and preparing construction devices and materials required by construction;
2) erecting a steel pipe pile guiding construction platform: laying two rows of strut longitudinal beams 3 on a construction steel trestle 1, respectively laying a bridge bottom hanging plate 4 and a beam top hanging plate 5 on the lower surface of the construction steel trestle 1 and the upper surface of the strut longitudinal beams 3, and applying fastening force to the bridge bottom hanging plate 4 and the beam top hanging plate 5 through longitudinal beam anchor bars 6; two strut beams 7 are arranged between the two rows of strut longitudinal beams 3, and the strut longitudinal beams 3 and the strut beams 7 are firmly connected through bolts or welding; a guide groove pipe 8 is inserted in a cavity formed by enclosing the strut longitudinal beam 3 and the strut cross beam 7, and groove pipe angle ribs 9 are respectively arranged between the guide groove pipe 8 and the strut longitudinal beam 3 and the strut cross beam 7;
3) installing a pile cap of the steel pipe pile: a bearing hoop 10 is arranged on the steel pipe pile 2, a hoop side supporting plate 11 is arranged on the outer side of the bearing hoop 10, a reinforcing supporting column 12 in mirror symmetry is arranged on the upper surface of the hoop side supporting plate 11, and a hoop side inclined strut 13 is arranged between the lower surface and the bearing hoop 10; an adjustable pile cap 14 is arranged at the top end of the steel pipe pile 2, and the adjustable pile cap 14 is firmly connected with the steel pipe pile 2 through a pile cap fastening bolt 15; a column top support body 16 is arranged at the top end of the reinforcing support column 12; checking the elevation of a column top support body 16 and an adjustable pile cap 14, arranging a beam bottom sealing layer 18 on the lower surface of a pile top steel beam 17, and hoisting the pile top steel beam 17 to the upper surfaces of the column top support body 16 and the adjustable pile cap 14;
4) and (3) guiding and driving of the steel pipe pile: a position control body bottom plate 19 and a position control body support column 20 which are in mirror symmetry are sequentially arranged on the strut longitudinal beam 3 outside the guide groove pipe 8, and a position control bolt 21 and a position control groove plate 22 are arranged on the position control body support column 20 to the side of the guide groove pipe 8; a flexible pipe cap 23 is arranged at the top end of the guide groove pipe 8; hoisting the steel pipe pile 2 to the upper part of the guide groove pipe 8 by adopting hoisting equipment, and enabling the axis of the steel pipe pile 2 to coincide with the guide groove pipe 8; after the bottom end of the steel pipe pile 2 is inserted into the guide groove pipe 8, a sliding hoop 24 is arranged on the outer side of the steel pipe pile 2, and a sliding control plate 25 on the outer side wall of the sliding hoop 24 is inserted into a pile sinking guide groove 26 of the position control groove plate 22;
5) steel pipe pile lengthening construction: a connecting pipe hoop 28 and a guide arc plate 29 are arranged on the supporting pipe section 27; a baffle bottom plate 30 is arranged outside the connecting pipe hoop 28; a cross-brace baffle 31 is arranged on the upper surface of the baffle bottom plate 30, and a hoop-side inclined brace 13 is arranged between the lower surface and the connecting pipe hoop 28; the transverse position of the guide arc plate 29 is defined by the first ring plate 33 and the second ring plate 34 respectively; a position-correcting cross brace 36 and a cross brace arc plate 37 are sequentially arranged between the cross brace baffle plate 31 and the extension pipe section 35, and an arc plate rotating hinge 38 is arranged between the cross brace arc plate 37 and the position-correcting cross brace 36;
6) and (3) laying and positioning the profile steel bottom beam: after the steel pipe pile 2 is driven, sequentially laying a supporting hoop 40 and a hanging hoop 41 on the steel pipe pile 2 from bottom to top, and arranging a sling rotating wheel 42 and a lifting sling 43 which are opposite in mirror image on the hanging hoop 41; a strut adjustment body 44 and a strut pressure plate 45 are arranged between the mirror-image opposite support hoops 40; the upper surface of the lifting platform 46 is connected with the lifting sling 43, and the lower surface of the lifting platform defines the position of the stay bar pressing plate 45 through a pressing plate limiting plate 47; the height of the lifting platform 46 is controlled by the lifting sling 43 and the stay bar adjusting body 44; placing the section steel bottom beam 48 in the section steel embedded groove 49 at the top end of the steel pipe pile 2; arranging a position correction hoop 50 on the steel pipe pile 2 at the position where the elevation of the section steel bottom beam 48 needs to be adjusted, and controlling the elevation of the brace rod pressing plate 45 and the section steel bottom beam 48 through position correction bolts 51 at two sides of the position correction hoop 50; a seam adjusting plug 53 is arranged in the gap between the section steel bottom beam 48 and the section steel embedding groove 49;
7) b, laying a Bailey beam: after the profile steel bottom beam 48 is arranged, the Bailey beam 54 is arranged between two opposite beam side limiting tenons 55 on the profile steel bottom beam 48; inserting the adjusting support plate 56 into a gap of the Bailey beam 54 needing elevation adjustment, and synchronously applying top pressure to the adjusting support plate 56 through the jacking control bodies 57 on the two sides of the Bailey beam 54 to adjust the elevation of the Bailey beam 54;
8) distributing beams: hoisting the distribution steel beams 60 to the upper surface of the Bailey beam 54, arranging distribution beam positioning bodies 89 on the Bailey beam 54, and enabling the distribution beam positioning bolts 59 on two sides of the adjusting body support caps 58 to be respectively connected with the corresponding distribution steel beams 60; applying transverse top pressure to the distribution steel beam 60 through the distribution beam position control bolt 59, and correcting the position of the distribution steel beam 60;
9) laying a platform plate: respectively hoisting the platform plate 61 to the upper surface of the distribution steel beam 60, and checking the plane position of the steel tube fixing cylinder 62 on the platform plate 61;
10) platform counter-force pre-pressing: a bottom reaction plate 64 is arranged on the outer side wall of the reaction hoop 63 on the steel pipe pile 2; tension anchor bars 66 are arranged between the bottom counter-force plate 64 and the top counter-force plate 65, then a counter-pressure applying body 67 is arranged between the top counter-force plate 65 and the platform plate 61, and the counter-pressure applying body 67 applies pressure to the top counter-force plate 65 to complete counter-force pre-pressing of the platform.
Referring to fig. 2-16, in the steel pipe pile bailey frame foundation full-hall bracket system, a construction trestle is used as a support body of a strut longitudinal beam 3, and the position of a guide groove pipe 8 is limited by the strut longitudinal beam 3 and a strut cross beam 7; the outer side wall of the steel pipe pile 2 is provided with a sliding hoop 24 and a sliding control plate 25, and the transverse position of the steel pipe pile 2 can be limited through a position control groove plate 22; a connecting pipe hoop 28 and a guide arc plate 29 are arranged on the supporting pipe section 27; arranging a supporting hoop 40 and a hanging hoop 41 on the steel pipe pile 2, and controlling the elevation of a lifting platform 46 through a lifting sling 43 and a stay bar regulator 44; the elevation of the section steel bottom beam 48 is controlled through the position correcting hoop 50 and the strut pressing plate 45; an adjusting body support cap 58 is arranged on the Bailey beam 54, and the position of a distribution steel beam 60 is adjusted through a distribution beam position control bolt 59; a reaction anchor ear 63 is provided on the outer side of the steel pipe pile 2 to provide a tension reaction force to the tension anchor 66, and a top pressure is applied to the top reaction plate 65 by a back pressure applying body 67.
The construction steel trestle 1 consists of steel pipe bridge piles, section steel beams and steel plate bridge deck planks, wherein the bridge deck planks are made of steel plate materials with the thickness of 1cm and the width of 7 m.
The steel pipe pile 2, the supporting pipe section 27 and the extension pipe section 35 are made of the same material and have the same size, and all adopt steel pipes with the diameter of 600 multiplied by 10 mm.
Both the strut longitudinal beam 3 and the strut transverse beam 7 adopt Bailey beams with 321 types.
The bridge bottom hanging plate 4 and the beam top hanging plate 5 are both formed by rolling steel plates with the thickness of 10 mm.
The longitudinal beam anchor bars 6 adopt bolts with nominal diameter of 52 mm.
The guide groove pipe 8 is formed by rolling a steel plate with the thickness of 2mm, and the inner diameter of the guide groove pipe is 20mm larger than that of the steel pipe pile 2.
The groove pipe angle rib 9 is a steel pipe with the diameter of 60mm, and two ends of the groove pipe angle rib are connected with the support longitudinal beam 3 and the guide groove pipe 8 in a welding mode.
The bearing hoop 10, the connecting pipe hoop 28, the supporting hoop 40, the hanging hoop 41, the aligning hoop 50 and the counter-force hoop 63 are all composed of two hoop arc plates 78, the thickness of each hoop plate is 10mm, and the inner diameter of each hoop plate is 600 mm.
The hoop side supporting plate 11 is made of a steel plate with the thickness of 10mm, the width of the hoop side supporting plate is 30cm, and the hoop side supporting plate is connected with the bearing hoop 10 in a welding mode.
The reinforcing brace 12 is made of H-shaped steel with the specification of 300 × 300 × 10 × 15.
The hoop side inclined strut 13 adopts H-shaped steel of 100 multiplied by 6 multiplied by 8.
The adjustable pile cap 14 is comprised of a pile cap sleeve 68, a pile cap cross stop 69 and a pile cap side stop 70. The pile cap sleeve 68 is rolled into a cylindrical shape by using a steel plate material with a thickness of 10mm, the inner diameter of the pile cap sleeve is 10mm larger than the outer diameter of the steel pipe pile 2, and a fastening bolt sliding groove 88 is formed in the side wall of the pile cap sleeve. The pile cap transverse baffle 69 and the pile cap side baffle 70 are both made of steel plates with the thickness of 30 mm; the width of the pile cap horizontal baffle 69 is 20cm, and is vertically connected with the pile cap sleeve 68 and the pile cap side baffle 70, and the upper surface of the pile cap horizontal baffle is provided with a compression bar embedded groove 72 with the height of 10mm and the width of 5 cm. The height of the pile cap side dam 70 is 20 cm.
The pile cap fastening bolt 15 adopts a high-strength bolt with the diameter of 30 mm. The fastening bolt sliding groove 88 is connected with the pile cap fastening bolt 15 through a screw.
The column top support 16 is cut out from a steel plate having a thickness of 1 cm.
The pile top steel beam 17 is made of H-shaped steel with the specification of 300 multiplied by 10 multiplied by 15.
The beam bottom sealing layer 18 is formed by cutting a rubber sheet with the thickness of 2 mm.
The plane of the pressing plate top pressure rod 75 is L-shaped, the pressing plate top pressure rod is formed by rolling a steel plate with the thickness of 10mm, the width of the pressing plate top pressure rod is 10cm, and a pressing rod rotating shaft 74 is arranged on the inclined rod section of the pressing plate top pressure rod 75. The pressure lever rotating shaft 74 is a stainless steel rotating shaft with the diameter of 20mm, and is limited by a rotating shaft positioning rod 73; the rotating shaft positioning rod 73 is welded and connected with the lower surface of the pile cap transverse baffle 69.
The built-in pressure plate 76 is formed by rolling a steel plate with the thickness of 10mm, the cross section of the built-in pressure plate is in a circular arc shape, and the outer diameter of the built-in pressure plate is the same as the inner diameter of the steel pipe pile 2.
The elastic lacing wire 77 is made of spring materials with the space of 2cm, and two ends of the elastic lacing wire are welded with the pressing plate jacking rod 75.
The control body bottom plate 19 is formed by cutting a steel plate with the thickness of 10 mm.
The retainer supporting column 20 is made of H-shaped steel with the specification of 200 × 200 × 8 × 12.
The position control bolt 21 is composed of a position control nut 80, a first position control screw 81 and a second position control screw 82, and the screw fastening directions of the first position control screw 81 and the second position control screw 82 at two ends of the position control nut 80 are opposite. The first position-controlling screw 81 and the second position-controlling screw 82 both have a nominal diameter of 30 mm. The position control nut 80 is matched with a first position control screw 81 and a second position control screw 82.
The position control groove plate 22 is formed by rolling a steel plate with the thickness of 10mm, and a U-shaped pile sinking guide groove 26 is arranged on the cross section; pile sinking guide groove 26 has a groove depth of 10mm and a width of 22 mm.
The flexible pipe caps 23 are made of rubber materials with the thickness of 5mm, are uniformly distributed at intervals along the top ends of the guide groove pipes 8, have U-shaped cross sections and are connected with the guide groove pipes 8 in an adhering mode.
The sliding hoop 24 is made of a steel plate with the thickness of 10mm by rolling, is composed of two semicircular arc plates and is fastened and connected through a hoop bolt 79.
The anchor ear bolt 79 is made of a high-strength bolt with the diameter of 30 mm.
The sliding control plate 25 is formed by cutting a steel plate with the thickness of 2cm, has the width of 3cm, and is vertically welded and connected with the sliding hoop 24.
The guide arc plate 29 is formed by rolling a steel plate with the thickness of 1cm, is uniformly distributed at intervals along the circumferential direction, is enclosed to be in a cup mouth shape, and is connected with the first annular plate 33 and the second annular plate 34 through a channel. The first annular plate 33 and the second annular plate 34 both adopt throat hoops with the width of 2 cm.
The baffle bottom plate 30 and the cross brace baffle 31 are both formed by cutting steel plates with the thickness of 10mm, and the cross brace baffle 31 is vertically welded and connected with the upper surface of the baffle bottom plate 30; one end of the baffle bottom plate 30 is vertically welded and connected with the connecting pipe hoop 28, and a hoop side inclined strut 13 is arranged between the lower surface and the connecting pipe hoop 28.
The stay bar rotating hinge 32 adopts a spherical hinge with the diameter of 30 mm.
The position correcting cross brace 36 is composed of a first cross brace screw 84, a cross brace adjusting nut 85 and a second cross brace screw 86. Wherein, the first cross brace screw 84 and the second cross brace screw 86 both adopt screws with the diameter of 30mm, and the fastening directions of the first cross brace screw 84 and the second cross brace screw 86 are opposite. The internal threads of the cross brace adjusting nut 85 are matched with the first cross brace screw 84 and the second cross brace screw 86.
The cross section of the cross-bracing arc plate 37 is arc-shaped and is formed by rolling a steel plate with the thickness of 10mm, the inner diameter of the cross-bracing arc plate is the same as the outer diameter of the extension pipe section 35, the arc angle is 15 degrees, and the height is 10 cm.
The arc plate rotating hinge 38 adopts a spherical hinge with the diameter of 30 mm.
The cross section of the position correcting stay bar 39 is L-shaped and is formed by rolling a screw rod with the diameter of 60mm, a position correcting bolt 51 with the length adjustable is arranged on the position correcting stay bar, and the position correcting bolt 51 is a hexagon bolt.
The sling wheel 42 is a 6 inch steel pulley.
The lifting sling 43 is made of a wire rope having a diameter of 20 mm.
The stay adjusting body 44 is composed of a first stay screw 83, a stay adjusting bolt 71, and a second stay screw 52. The diameters of the first stay rod screw 83 and the second stay rod screw 52 are both 60mm, and the fastening directions are opposite; the strut adjustment bolt 71 mates with the first strut screw 83 and the second strut screw 52.
The stay bar pressing plate 45 is made of a steel plate with a thickness of 10mm, and the plane size is 20cm × 20 cm.
The lifting platform 46 is made of a steel plate with a thickness of 4 mm.
The pressure plate limiting plate 47 is formed by rolling a steel plate with the thickness of 10mm and is vertically welded and connected with the lower surface of the lifting platform 46.
The section steel bottom beam 48 adopts H-shaped steel with the specification of 300 multiplied by 10 multiplied by 15.
The depth of the section steel fitting groove 49 is 5cm, and the width is 32 cm.
The cross section of the seam adjusting plug 53 is in a step shape and is formed by rolling a steel plate material with the thickness of 1cm, and the step width is 2 cm.
The bailey beam 54 is formed of type 200 bailey pieces.
Spacing falcon 55 in roof beam side adopts the steel sheet rolling that thickness is 2cm to form, and its height is 6cm, and with shaped steel floorbar 48 perpendicular welded connection.
The adjusting supporting plate 56 is formed by cutting a steel plate with the thickness of 20mm, the width of the adjusting supporting plate is 10cm, and the length of the adjusting supporting plate is 100 cm.
The jacking control body 57 adopts a self-locking hydraulic jack of 100 t.
The distributor beam positioning body 89 includes a support cap baffle 90, a regulator support cap 58, and a distributor beam positioning pin 59. The cross section of the adjusting body support cap 58 is U-shaped and is formed by rolling a steel plate, and the clear width of the U-shaped groove is the same as that of the Bailey beam 54 and is bound and connected with the Bailey beam 54; the supporting cap baffle 90 is formed by rolling a steel plate with the thickness of 20mm, has the height of 20cm and the width of 60cm, and is vertically welded and connected with the distribution beam position control bolt 59; the distribution beam position control bolt 59 is a stainless steel bolt with a diameter of 60 mm.
The distribution steel beam 60 is made of H-shaped steel with the specification of 300 × 300 × 10 × 15.
The platform plate 61 is a steel plate having a thickness of 1 cm.
The steel tube fixing cylinder 62 is a steel tube with the thickness of 2mm and the diameter of 50mm and used for fixing the full support.
The bottom reaction plate 64 and the top reaction plate 65 are both formed by rolling steel plates; wherein the bottom reaction plate 64 is fan-shaped, has a central angle of 60 degrees and is vertically welded and connected with the reaction hoop 63; the top reaction plate 65 is circular in plan.
The tensioning anchor bars 66 are screws with a diameter of 30 mm.
The counter pressure applying body 67 employs a 100-ton jack.
The pulling mechanism 87 is a hoist having a voltage of 380 v.
Claims (3)
1. The construction method of the steel pipe pile bailey truss foundation full-hall bracket system is characterized by comprising the following steps of: the method comprises the following construction steps:
1) construction preparation: building a construction steel trestle (1) on site, surveying and mapping to determine the driving position of the steel pipe pile (2), and preparing construction devices and materials required by construction;
2) erecting a steel pipe pile guiding construction platform: laying two rows of strut longitudinal beams (3) on a construction steel trestle (1), laying a bridge bottom hanging plate (4) and a beam top hanging plate (5) on the lower surface of the construction steel trestle (1) and the upper surface of the strut longitudinal beams (3), and applying fastening force to the bridge bottom hanging plate (4) and the beam top hanging plate (5) through longitudinal beam anchor bars (6); two strut beams (7) are arranged between the two rows of strut longitudinal beams (3), and the strut longitudinal beams (3) and the strut beams (7) are firmly connected through bolts or welding; a guide groove pipe (8) is inserted in a cavity formed by enclosing the strut longitudinal beam (3) and the strut cross beam (7), and groove pipe angle ribs (9) are respectively arranged between the guide groove pipe (8) and the strut longitudinal beam (3) and the strut cross beam (7);
3) installing a pile cap of the steel pipe pile: the method comprises the following steps that a bearing hoop (10) is arranged on a steel pipe pile (2), a hoop side supporting plate (11) is arranged on the outer side of the bearing hoop (10), mirror-symmetrical reinforcing support columns (12) are arranged on the upper surface of the hoop side supporting plate (11), and a hoop side inclined support (13) is arranged between the lower surface of the hoop side supporting plate (11) and the bearing hoop (10); an adjustable pile cap (14) is arranged at the top end of the steel pipe pile (2), and the adjustable pile cap (14) is firmly connected with the steel pipe pile (2) through a pile cap fastening bolt (15); a column top support body (16) is arranged at the top end of the reinforcing support column (12); checking the elevation of a column top support body (16) and an adjustable pile cap (14), arranging a beam bottom sealing layer (18) on the lower surface of a pile top steel beam (17), and hoisting the pile top steel beam (17) to the upper surfaces of the column top support body (16) and the adjustable pile cap (14);
the adjustable pile cap (14) consists of a pile cap sleeve (68), a pile cap transverse baffle (69) and a pile cap side baffle (70), the pile cap side baffles (70) which are opposite in mirror image are enclosed to form a section steel embedded groove (49), and a rectangular fastening bolt channel (88) connected with a pile cap fastening bolt (15) is arranged on the pile cap sleeve (68); a pressing rod embedding groove (72) is formed in the upper surface of the pile cap transverse baffle (69), a rotating shaft positioning rod (73) is arranged on the lower surface of the pile cap transverse baffle (69), and a pressing rod rotating shaft (74) is arranged on the rotating shaft positioning rod (73); a pressing plate jacking rod (75) is arranged on the pressing rod rotating shaft (74), and a built-in pressing plate (76) is arranged at the bottom end of the pressing plate jacking rod (75); the plane of each pressing plate jacking rod (75) is L-shaped, the top end of each pressing plate jacking rod is provided with a cross rod connected with the corresponding pressing rod embedded groove (72), and an elastic lacing wire (77) is arranged between every two adjacent pressing plate jacking rods (75); the built-in pressing plate (76) is formed by rolling a steel plate, the cross section of the built-in pressing plate is arc-shaped, and the outer diameter of the built-in pressing plate is the same as the inner diameter of the steel pipe pile (2); the column top support body (16) is formed by rolling a steel plate, the cross section of the column top support body is U-shaped, and the lower surface of the column top support body is welded with the reinforcing support column (12); the bearing hoop (10) comprises two hoop arc plates (78), and the two opposite hoop arc plates (78) are connected through hoop bolts (79);
4) and (3) guiding and driving of the steel pipe pile: a position control body bottom plate (19) and a position control body support column (20) which are in mirror symmetry are sequentially arranged on the strut longitudinal beam (3) on the outer side of the guide groove pipe (8), and a position control bolt (21) and a position control groove plate (22) are arranged on the position control body support column (20) towards the guide groove pipe (8); a flexible pipe cap (23) is arranged at the top end of the guide groove pipe (8); hoisting the steel pipe pile (2) to the upper part of the guide groove pipe (8) by adopting hoisting equipment, and enabling the axis of the steel pipe pile (2) to coincide with the guide groove pipe (8); after the bottom end of the steel pipe pile (2) is inserted into the guide groove pipe (8), a sliding hoop (24) is arranged on the outer side of the steel pipe pile (2), and a sliding control plate (25) on the outer side wall of the sliding hoop (24) is inserted into a pile sinking guide groove (26) of the position control groove plate (22);
the flexible pipe caps (23) are made of rubber materials or plastic materials, are uniformly distributed at intervals along the top ends of the guide groove pipes (8), and have U-shaped cross sections; the sliding control plate (25) is formed by rolling a steel plate, and the plane is rectangular; the position control groove plate (22) is formed by rolling a steel plate, a pile sinking guide groove (26) is formed in the side wall, facing the guide groove pipe (8), of the position control groove plate (22), and the other side wall of the position control groove plate (22) is vertically welded and connected with the position control bolt (21); the position control bolt (21) consists of a position control nut (80), a first position control screw rod (81) and a second position control screw rod (82), and the screw fastening directions of the first position control screw rod (81) and the second position control screw rod (82) at the two ends of the position control nut (80) are opposite; the sliding hoop (24) comprises two arc-shaped hoop plates with the same shape, and fastening force is applied to the arc-shaped hoop plates through hoop bolts (79);
5) steel pipe pile lengthening construction: a connecting pipe hoop (28) and a guide arc plate (29) are arranged on the supporting pipe section (27); a baffle bottom plate (30) is arranged outside the connecting pipe hoop (28); a cross-brace baffle plate (31) is arranged on the upper surface of the baffle plate bottom plate (30), and a hoop side inclined brace (13) is arranged between the lower surface of the baffle plate bottom plate (30) and the connecting pipe hoop (28); the transverse position of the guide arc plate (29) is defined by a first ring plate (33) and a second ring plate (34) respectively; a position-correcting cross brace (36) and a cross brace arc plate (37) are sequentially arranged between the cross brace baffle (31) and the extension pipe section (35), and an arc plate rotating hinge (38) is arranged between the cross brace arc plate (37) and the position-correcting cross brace (36);
6) and (3) laying and positioning the profile steel bottom beam: after the steel pipe pile (2) is driven, sequentially laying a supporting hoop (40) and a hanging hoop (41) on the steel pipe pile (2) from bottom to top, and arranging a sling rotating wheel (42) and a lifting sling (43) which are opposite in mirror image on the hanging hoop (41); a strut adjusting body (44) and a strut pressing plate (45) are arranged between the mirror-image opposite support hoops (40); the upper surface of the lifting platform (46) is connected with the lifting sling (43), and the lower surface of the lifting platform (46) limits the position of the brace rod pressing plate (45) through a pressing plate limiting plate (47); the height of the lifting platform (46) is controlled by lifting slings (43) and a stay bar adjusting body (44); placing a profile steel bottom beam (48) in a profile steel embedding groove (49) at the top end of the steel pipe pile (2); arranging a position correction hoop (50) on the steel pipe pile (2) at the position where the elevation of the profile steel bottom beam (48) needs to be adjusted, and controlling the elevations of the brace rod pressing plate (45) and the profile steel bottom beam (48) through position correction bolts (51) on two sides of the position correction hoop (50); a seam adjusting plug (53) is arranged in a gap between the profile steel bottom beam (48) and the profile steel embedded groove (49);
the lifting sling (43) adopts a steel wire rope, one end of the lifting sling is connected with the lifting platform (46), and the other end of the lifting sling passes through the sling turning wheel (42) and then is connected with a lifting machine (87); the stay bar adjusting body (44) consists of a first stay bar screw (83), a stay bar adjusting bolt (71) and a second stay bar screw (52), a stay bar rotating hinge (32) is arranged between the first stay bar screw (83) and the support hoop (40), and a stay bar rotating hinge (32) is arranged between the second stay bar screw (52) and the stay bar pressing plate (45); the outer side wall of the position correcting hoop (50) is sequentially provided with a position correcting support rod (39), a position correcting bolt (51) and a support rod pressing plate (45); the cross section of the position correction support rod (39) is L-shaped; the cross section of the seam adjusting plug (53) is in a step shape;
7) b, laying a Bailey beam: after the profile steel bottom beam (48) is arranged, the Bailey beam (54) is arranged between two opposite beam side limiting tenons (55) on the profile steel bottom beam (48); inserting the adjusting support plate (56) into a gap of the Bailey beam (54) needing elevation adjustment, and synchronously applying jacking pressure to the adjusting support plate (56) through jacking control bodies (57) on two sides of the Bailey beam (54) to adjust the elevation of the Bailey beam (54);
8) distributing beams: hoisting the distribution steel beam (60) to the upper surface of the Bailey beam (54), arranging a distribution beam adjusting body (89) on the Bailey beam (54), and respectively connecting distribution beam position control bolts (59) at two sides of an adjusting body support cap (58) with the opposite distribution steel beam (60); applying transverse jacking pressure to the distribution steel beam (60) through the distribution beam position control bolt (59) to correct the distribution steel beam (60); the distribution beam positioning body (89) comprises a supporting cap baffle (90), a regulating body supporting cap (58) and a distribution beam positioning bolt (59), and the supporting cap baffle (90) is vertically welded with the regulating body supporting cap (58); the cross section of the adjusting body support cap (58) is U-shaped and is formed by rolling a steel plate, and the clear width of a U-shaped groove of the adjusting body support cap is the same as the width of the Bailey beam (54); the support cap baffle (90) is connected with the distribution beam position control bolt (59) through a screw;
9) laying a platform plate: respectively hoisting the platform plates (61) to the upper surfaces of the distribution steel beams (60), and checking the plane positions of the steel pipe fixing cylinders (62) on the platform plates (61);
10) platform counter-force pre-pressing: a bottom reaction plate (64) is arranged on the outer side wall of the reaction hoop (63) on the steel pipe pile (2); firstly, arranging a tensioning anchor bar (66) between a bottom counter-force plate (64) and a top counter-force plate (65), then placing a counter-pressure applying body (67) between the top counter-force plate (65) and a platform plate (61), and applying pressure to the top counter-force plate (65) through the counter-pressure applying body (67) to complete counter-force pre-pressing of the platform; the top reaction plate (65) is formed by rolling a steel plate, is annular on the plane and is sleeved on the outer side of the steel pipe fixing cylinder (62).
2. The construction method of the steel pipe pile bailey truss foundation full-space bracket system according to claim 1, characterized by comprising the following steps: step 2), rolling the bridge bottom hanging plate (4) and the beam top hanging plate (5) by adopting steel plates, and arranging a longitudinal beam anchor bar (6) between the bridge bottom hanging plate (4) and the beam top hanging plate (5); the support longitudinal beam (3) and the support cross beam (7) both adopt a Bailey beam, and the support cross beam (7) is arranged on a cantilever section of the support longitudinal beam (3).
3. The construction method of the steel pipe pile bailey truss foundation full-space bracket system according to claim 1, characterized by comprising the following steps: step 5), the supporting pipe section (27) and the lengthening pipe section (35) are respectively a pipe section which is arranged in advance in the steel pipe pile (2) and a pipe section to be lengthened; the position correcting cross brace (36) consists of a first cross brace screw rod (84), a cross brace adjusting nut (85) and a second cross brace screw rod (86); the cross section of the cross-brace arc plate (37) is arc-shaped and is formed by rolling a steel plate, and the inner diameter of the cross-brace arc plate is the same as the outer diameter of the extension pipe section (35); the guide arc plates (29) are formed by rolling steel plates, are uniformly distributed at intervals along the circumferential direction, and are welded with the first ring plate (33) and the second ring plate (34).
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