CN120311620A - A construction method for double-hole box culvert in underground engineering - Google Patents
A construction method for double-hole box culvert in underground engineeringInfo
- Publication number
- CN120311620A CN120311620A CN202510803848.6A CN202510803848A CN120311620A CN 120311620 A CN120311620 A CN 120311620A CN 202510803848 A CN202510803848 A CN 202510803848A CN 120311620 A CN120311620 A CN 120311620A
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- Prior art keywords
- box culvert
- supporting
- formwork
- poured
- double
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F5/00—Draining the sub-base, i.e. subgrade or ground-work, e.g. embankment of roads or of the ballastway of railways or draining-off road surface or ballastway drainage by trenches, culverts, or conduits or other specially adapted means
- E01F5/005—Culverts ; Head-structures for culverts, or for drainage-conduit outlets in slopes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
- E04G11/06—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs for walls, e.g. curved end panels for wall shutterings; filler elements for wall shutterings; shutterings for vertical ducts
- E04G11/20—Movable forms; Movable forms for moulding cylindrical, conical or hyperbolical structures; Templates serving as forms for positioning blocks or the like
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G17/00—Connecting or other auxiliary members for forms, falsework structures, or shutterings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Sewage (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
Abstract
本发明的一种地下工程中双孔箱涵的施工方法，针对模板台车系统施工地下双孔箱涵无法保证其施工质量及施工效率的问题。步骤：将两个可调台车模架系统的支撑架体和模板系统并列架设于已浇筑箱涵结构顶部，按照先合顶模组件，再合角模面板，最后合侧模组件的顺序合模施工，采用对拉螺杆对双孔箱涵的中间墙体两侧的侧模组件进行加固，浇筑中间墙体混凝土至顶板底部，待混凝土结构强度满足要求后，在中间墙体两侧架设多根横向支撑进行加固，混凝土浇筑外侧墙体和顶板，待混凝土结构强度达到要求后，控制系统控制可调台车模架系统退模，运行模架移动车至支撑架体底部并带动可调台车模架系统行走至拟浇筑箱涵结构下一待浇筑段，实现模板系统的自平衡。
The invention discloses a construction method for a double-hole box culvert in an underground project, which aims to solve the problem that the construction quality and efficiency of an underground double-hole box culvert cannot be guaranteed by using a formwork trolley system. Steps: The support frames and formwork systems of two adjustable trolley formwork systems are erected in parallel on the top of the cast box culvert structure, and the molds are closed in the order of first closing the top formwork assembly, then closing the corner formwork panel, and finally closing the side formwork assembly. The side formwork assemblies on both sides of the middle wall of the double-hole box culvert are reinforced by tensioning screws, and the middle wall concrete is poured to the bottom of the top plate. After the concrete structure strength meets the requirements, multiple horizontal supports are erected on both sides of the middle wall for reinforcement, and concrete is poured on the outer wall and the top plate. After the concrete structure strength meets the requirements, the control system controls the adjustable trolley formwork system to withdraw the mold, runs the formwork moving vehicle to the bottom of the support frame, and drives the adjustable trolley formwork system to move to the next section to be poured of the proposed box culvert structure, so as to realize the self-balancing of the formwork system.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a construction method of a double-hole box culvert in underground engineering.
Background
The application publication number CN 116927107A is a technical scheme of a construction method of a box culvert, and the technical scheme is that a bottom foundation of the double-hole box culvert is poured firstly, and a box culvert side wall and a box culvert top plate are integrally poured in a surrounding area between a side mold mechanism and an outer frame body of an automatic box culvert opening and closing template trolley system. However, in the construction process of the double-hole box culvert of underground engineering, the outer sides of the two wall bodies of the double-hole box culvert are foundation pit soil bodies, the outer side of the outer formwork of the two wall bodies cannot be erected to support the outer frame bodies, so that the inner formwork of the two wall bodies cannot be tied and fixed by using the split bolts.
Disclosure of Invention
The method aims at solving the problem that the construction quality and the construction efficiency of the underground double-hole box culvert cannot be guaranteed when the template trolley system is used for constructing the underground double-hole box culvert. The invention aims to provide a construction method of a double-hole box culvert in underground engineering.
The technical scheme adopted for solving the technical problems is that the construction method of the double-hole box culvert in the underground engineering comprises the following steps:
Firstly, excavating foundation pit earthwork, conveying a support frame body and a template system of two assembled adjustable trolley formwork systems to a first construction section of a double-hole box culvert to be poured, and arranging the support frame body and the template system on the top of a poured box culvert structure, wherein the poured box culvert structure comprises a foundation slab and a bottom wall body which are integrally poured by precast concrete;
the second step, the control system controls the wall surface supporting elevators on two sides of the supporting frame body to extend and prop against the bottom wall body of the poured box culvert structure respectively, simultaneously controls the bottom elevator of the supporting frame body to extend and support on the foundation slab, and adjusts the screw rod jacking top die assembly to the designed height, controls the screw rod of the angle die elevator to extend, pushes the angle die panel to extend and splice with the top die assembly, controls the side die elevator to extend, pushes the side die assembly to extend and splice with the angle die panel, and hoists and binds the steel bars of the outer wall body, the middle wall body and the top plate of the box culvert structure to be poured;
reinforcing side mold assemblies at two sides of the middle wall body of the double-hole box culvert by adopting a counter-pulling screw rod, and pouring concrete of the middle wall body to the bottom of the top plate;
Fourthly, after the concrete structural strength of the middle wall meets the requirement, erecting a plurality of transverse braces on two sides of the middle wall, wherein one end of each transverse brace is propped against a side die assembly close to the middle wall, the other end of each transverse brace is propped against a side die assembly close to the side wall to be reinforced, and the outer wall and the top plate are poured with concrete;
fifthly, after the strength of the concrete structure meets the requirement, the control system controls the die-withdrawing of the adjustable trolley die-set system, operates the die-set moving vehicle to the bottom of the supporting frame body, so that the supporting frame body and the template system are supported on the die-set moving vehicle, and operates the die-set moving vehicle to walk to the next section to be poured of the box culvert structure to be poured;
And sixthly, repeating the second step to the fifth step until the concrete pouring construction of the box culvert structure to be poured is completed, and backfilling earthwork on the top of the top plate.
According to the construction method of the double-hole box culvert in the underground engineering, a support frame body and a template system of two adjustable trolley formwork systems are arranged on the top of a poured box culvert structure in parallel, the die assembly of the template system is realized according to the sequence of closing a top die assembly, closing an angle die panel and closing a side die assembly, a pull screw is adopted to reinforce the side die assemblies on two sides of a middle wall body of the double-hole box culvert, middle wall body concrete is poured to the bottom of a top plate, after the concrete structural strength of the middle wall body meets the requirement, a plurality of transverse supports are erected on two sides of the middle wall body to reinforce, the concrete is poured to form an outer wall body and the top plate, after the concrete structural strength meets the requirement, a control system controls the adjustable trolley formwork system to withdraw a die, and a die frame moving vehicle is operated to the bottom of the support frame body and drives the adjustable trolley formwork system to travel to a next section to be poured in the box culvert structure; according to the construction method, after the strength of the middle wall body of the double-hole box culvert is met, transverse support reinforcement is erected between the middle wall body and an inner formwork of the outer wall body, and the outer wall body and a top plate are cast at the same time, because the double-hole box culvert is located below the ground, the outer wall body bears certain soil pressure, the middle wall body is not influenced by the soil pressure, the middle wall body is utilized to stably support the outer wall body, self-balancing of a formwork system can be achieved in the concrete casting process, and therefore construction efficiency of the cast-in-situ underground double-hole box culvert is improved, and construction quality and construction safety of the double-hole box culvert are guaranteed.
And in the fifth step, the die withdrawing step of the adjustable trolley die frame system comprises the steps of controlling the wall surface supporting elevators at two sides of the supporting frame body to retract and leave the bottom wall body of the poured box culvert structure, and sequentially controlling the side die elevators, the corner die elevators and the bottom elevator to retract to perform die sinking construction.
Further, the fifth step further comprises that the formwork moving vehicle comprises a main frame, telescopic frames, an adjusting device, rollers, a winch and fixed pulleys, wherein the rollers are arranged at the bottom of the main frame, the winch and the fixed pulleys are connected to the top of the main frame, the two telescopic frames are symmetrically arranged and sleeved at two sides of the main frame, the adjusting device comprises an adjusting lifter vertically arranged along the axis of the main frame, and two supporting guide rods symmetrically arranged at two sides of the adjusting lifter, one ends of the two supporting guide rods are connected to the top ends of the adjusting lifter, the other ends of the two supporting guide rods are respectively connected to the two telescopic frames, the telescopic frames comprise two sliding rods which are parallel and are arranged at intervals, a connecting rod connected between the two sliding rods, and a bracket connected to the connecting part of the sliding rods, the bracket comprises a supporting lifter fixed at the end of the sliding rod, and a supporting plate connected to the top end of the screw rod of the supporting lifter, the supporting lifter of the bracket is adjusted to enable the supporting plate of the bracket to be positioned at the same horizontal plane, the telescopic guide rods at two ends of the main frame are in a contracted state, the formwork moving vehicle is operated to the bottom of a supporting frame body, and the positions of the supporting frames of the supporting frame and the supporting frame are corresponding to the supporting frames of the supporting frame are controlled to be in the contracted on the bottom of the supporting frame, and the supporting frame is enabled to be capable of being contracted by the supporting frame; the telescopic guide rods at the two ends of the main frame are stretched to enable the main frame to be in contact with the bottom wall body of the poured box culvert structure, one end of the steel wire rope is wound on the winch, the other end of the steel wire rope is wound on the fixed pulley and connected with the anchoring piece, the winch winds up the steel wire rope, the length of the steel wire rope between the mould frame moving vehicle and the anchoring piece is shortened, the mould frame moving vehicle carries the support frame body and the template system to walk to the next construction section along the Z-axis direction.
Further, the telescopic guide rod of die carrier locomotive includes two hollow crossbars that set up side by side of rigid coupling in the vertical pole tip, and inlays respectively and locate two spinal branch vaulting poles of two hollow crossbars, and two spinal branch vaulting poles installation opposite directions, and the lateral wall of hollow crossbars and bracing piece all is equipped with equidistant a plurality of bolt holes, and the tip of two spinal branch vaulting poles all is connected with the leading wheel, and two spinal branch vaulting poles are reverse respectively stretched out and the leading wheel offsets with the bottom wall body of pouring box culvert structure after, and positioning bolt runs through the bolt hole on hollow crossbars and the bracing piece and locks fixedly for the die carrier locomotive can keep equidistant with the bottom wall body in the sliding process.
Further, the first step further comprises the step that a plurality of adjustable horizontal beams are transversely arranged between two support door frames of the support frame body and are connected with each other through bolts, each adjustable horizontal beam comprises a first horizontal beam and two second horizontal beams which are arranged at intervals and are opposite to each other, the first horizontal beams can be sleeved in gaps of the second horizontal beams and slide relatively, side plates of the first horizontal beams and the second horizontal beams are respectively connected with the support door frames on two sides through bolts, the lengths of the adjustable horizontal beams are adjusted, the width of the support frame body along the X-axis direction is matched with the width of a box culvert structure to be poured, and positioning bolts penetrate through bolt holes of the first horizontal beams and bolt holes of the second horizontal beams and are locked and fixed.
Further, the side mold lifter, the bottom lifter, the supporting lifter and the adjusting lifter all adopt screw rod lifters.
Drawings
FIG. 1 is a schematic diagram of an adjustable trolley formwork system for constructing single-hole box culverts according to an embodiment of the present invention;
FIG. 2 is a perspective view of FIG. 1;
FIG. 3 is a schematic view of a supporting frame in an adjustable trolley frame system according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a mold cart in an adjustable cart frame system according to an embodiment of the present invention;
fig. 5 to 10 are schematic diagrams illustrating steps in an embodiment of a method for constructing a dual-hole box culvert in underground engineering according to the present invention.
The labels in the figures are as follows:
Soil body 1, poured box culvert structure 2, middle wall 5, outer wall 6, top plate 7, supporting frame 100, supporting portal 10, adjustable horizontal beam 20, adjustable cantilever beam 30, adjusting screw 41, side mold lifter 42, wall supporting lifter 43, bottom lifter 46, caster 47, angle mold lifter 50, working platform 60, counter-pulling screw 71, transverse support 72, top mold assembly 210, side mold assembly 220, angle mold panel 230, mold frame moving vehicle 300, main frame 310, hollow cross bar 311, longitudinal bar 312, supporting bar 314, guide wheel 315, telescopic bracket 320, connecting rod 321, supporting lifter 324, supporting plate 325, adjusting lifter 341, supporting guide bar 342, roller 350, control system 400, anchor 500, wire rope 510.
Detailed Description
The invention is described in further detail below with reference to the drawings and the specific examples. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention. For convenience of description, the "upper" and "lower" described below are consistent with the upper and lower directions of the drawings, but this should not be construed as a limitation of the technical scheme of the present invention.
In this embodiment, taking concrete pouring construction of a double-hole box culvert in a certain underground engineering as an example, the double-hole box culvert includes a poured box culvert structure 2 at the bottom and a to-be-poured box culvert structure at the top, the width direction of the box culvert is taken as an X axis, the height direction of the box culvert is taken as a Y axis, and the length extension direction of the box culvert is taken as a Z axis to establish an XYZ rectangular coordinate system, and the adjustable trolley formwork system adopted in this embodiment is described below in connection with fig. 1 to 4, and includes:
The template system comprises a top module 210, a side module 220 and an angle module panel 230 which respectively correspond to the shape and the position of the top surface, the side surface and the angle part of the inner cavity of the box culvert structure to be poured;
The support frame body 100 comprises support frames 10, adjustable horizontal beams 20, adjustable cantilever beams 30, angle mould lifters 50, adjusting screws 41, side mould lifters 42, wall surface support lifters 43 and bottom lifters 46, wherein the support frames 10 are rectangular frame bodies formed by connecting two vertical columns and two transverse beams which are arranged vertically and horizontally at intervals, the two support frames 10 are vertically arranged at intervals, a plurality of adjustable horizontal beams 20 are transversely arranged and connected between the two support frames 10 by bolts to form a frame body, at least two adjustable cantilever beams 30 are erected on the transverse beams of each support frame 10 and positioned at the top, the other end of each adjustable cantilever beam 30 is detachably connected with a side mould assembly 220, the adjustable cantilever beams 30 bear the side mould assemblies 220 and can drive the side mould assemblies 220 to move in the X direction and the Y direction for fine adjustment, at least two pairs of side mould lifters 42 and a pair of wall surface support lifters 43 are symmetrically arranged on the two vertical columns of each support frame 10, the other end of the side mould lifters 42 are detachably connected with the side mould assemblies 220, the other end of the wall surface support lifters 43 and the end plates 230 are rotatably connected with the top mould plate 50 along the two ends of the top mould plate 50, and the bottom mould lifter plates of the corner mould lifter plate 230 are rotatably connected with the top mould lifter plate 50, and the corner mould lifter plate 230 is rotatably arranged along the two ends of the top mould lifter plate 50. The top of each upright post of the supporting portal 10 is connected with an adjusting screw 41, the internal threads of an upper support and a lower support of the adjusting screw 41 are respectively left-handed and right-handed, and are used for fine adjustment of the height of the top die assembly 210, and the bottom of each upright post is connected with a bottom lifter 46, and is used for fine adjustment of the height of the supporting frame 100;
The die carrier moving vehicle 300 comprises a main frame 310, telescopic frames 320, an adjusting device and rollers 350, wherein the rollers 350 are arranged at the bottom of the main frame 310, the two telescopic frames 320 are symmetrically arranged and sleeved on two sides of the main frame 310, the adjusting device comprises an adjusting lifter 341 and two supporting guide rods 342 which are symmetrically arranged on two sides of the adjusting lifter 341, one ends of the two supporting guide rods 342 are connected to the top ends of the adjusting lifter 341, the other ends of the two supporting guide rods 342 are respectively connected to the two telescopic frames 320, the adjusting lifter 341 stretches and contracts to drive the two telescopic frames 320 to synchronously and reversely move along the axis, so that the end parts of the two telescopic frames 320 can correspond to the positions of the casters 47 of the supporting frame 100, and the die carrier moving vehicle 300 is arranged at the bottom of the supporting frame 100 and is used for supporting and moving the disassembled supporting frame 100 and a template system to the next construction section;
the control system 400 is disposed on the supporting frame 100, and the control system 400 is at least in signal connection with the corner mold lifter 50 and the bottom lifter 46.
The following specific steps of the construction method of the double-hole box culvert in the underground engineering of the invention are as follows:
Firstly, as shown in fig. 5, excavating foundation pit earthwork, completing the concrete pouring construction of a poured box culvert structure 2 of a double-hole box culvert in advance, wherein the poured box culvert structure 2 comprises a foundation slab and a bottom wall body with a certain height which are integrally poured with concrete, and after the strength of the concrete structure meets the requirement, conveying a support frame 100 and a template system of two assembled adjustable trolley formwork systems to a first construction section of the double-hole box culvert to be poured, and arranging the support frame 100 and the template system on the top of the poured box culvert structure 2 in parallel;
In the second step, as shown in fig. 6, after the supporting frame 100 and the formwork system are in place, the control system respectively controls the wall supporting lifters 43 on two sides of the supporting frame 100 to stretch and prop against the bottom wall of the poured box culvert structure 2, meanwhile, the bottom lifter 46 of the supporting frame 100 stretches and supports on the foundation slab, the adjusting screw 41 lifts the top formwork assembly 210 to the designed height, the screw rod of the angle formwork lifter 50 is controlled to stretch, the angle formwork panel 230 is pushed to stretch and splice with the top formwork assembly 210, the side formwork lifter 42 is controlled to stretch, the side formwork assembly 220 is pushed to stretch and splice with the angle formwork panel 230, namely, the mold clamping construction of the formwork system is realized according to the sequence of combining the top formwork assembly 210, then combining the angle formwork panel 230 and finally combining the side formwork assembly 220, the widths and the heights of the supporting frame 100 and the formwork system are checked and adjusted until the construction requirements are met, and the outer side wall 6, the middle wall 5 and the reinforcing steel bars of the top slab 7 are hoisted and bound;
thirdly, as shown in fig. 6, reinforcing side mold assemblies 220 on two sides of the middle wall body 5 of the double-hole box culvert by adopting opposite-pulling screws 71, and as shown in fig. 7, pouring concrete of the middle wall body 5 to the bottom of the top plate 7;
Fourthly, as shown in fig. 8, after the concrete structural strength of the middle wall 5 meets the requirement, erecting a plurality of transverse supports 72 on two sides of the middle wall 5, wherein one end of each transverse support 72 is propped against a side mold assembly 220 close to the middle wall 5, the other end of each transverse support 72 is propped against a side mold assembly 220 close to the outer wall 6 to be reinforced, and the outer wall 6 and the top plate 7 are poured with concrete;
Fifthly, as shown in fig. 9, after the strength of the concrete structure meets the requirement, the control system controls the adjustable trolley formwork system to withdraw the formwork, operates the formwork moving vehicle 300 to the bottom of the supporting frame body 100, so that the supporting frame body 100 and the formwork system are supported on the formwork moving vehicle 300, and operates the formwork moving vehicle 300 to walk to the next section to be poured of the poured box culvert structure 2;
Sixth, as shown in fig. 10, the second to fifth steps are repeated until the concrete casting construction of the double-hole box culvert is completed, and the earth is backfilled on top of the top plate 7.
According to the construction method of the double-hole box culvert in the underground engineering, a support frame body 100 and a template system of two adjustable trolley formwork systems are arranged on the top of a poured box culvert structure 2 in parallel, the die assembly of the template system is realized according to the sequence of firstly closing a top die assembly 210, then closing an angle die panel 230 and finally closing a side die assembly 220, a counter-pulling screw 71 is adopted to reinforce the side die assemblies 220 on two sides of a middle wall body 5 of the double-hole box culvert, concrete of the middle wall body 5 is poured to the bottom of a top plate 7, after the concrete structural strength of the middle wall body 5 meets the requirement, a plurality of transverse supports 72 are erected on two sides of the middle wall body 5 for reinforcement, the concrete is poured to form an outer wall body 6 and the top plate 7, after the concrete structural strength meets the requirement, a control system controls the adjustable trolley formwork system to withdraw a die, and a movable trolley 300 is operated to the bottom of the support frame body 100 and drives the adjustable trolley formwork system to walk to a section to be poured next to the box culvert structure to be poured; according to the construction method, after the strength of the middle wall 5 of the double-hole box culvert is pre-cast in a mixed mode and meets the requirement, a transverse support 72 is erected between the middle wall 5 and an inner formwork of the outer wall 6 to strengthen the double-hole box culvert, and the outer wall 6 and a top plate 7 are cast at the same time, because the double-hole box culvert is positioned below the ground, the outer wall 6 bears certain soil pressure, the middle wall 5 is not influenced by the soil pressure, the middle wall 5 is utilized to stably support the outer wall 6, self-balance of a formwork system can be achieved in the concrete casting process, the construction efficiency of the cast-in-situ underground double-hole box culvert is improved, and the construction quality and construction safety of the double-hole box culvert are guaranteed.
The step of withdrawing the adjustable trolley formwork system in the fifth step is as follows, controlling the wall support lifter 43 to retract and leave the bottom wall of the poured box culvert structure 2, sequentially controlling the side formwork lifter 42, the corner formwork lifter 50 and the bottom lifter 46 to retract, opening the side formwork assembly 220, opening the corner formwork panel 230 again, and finally opening the top formwork assembly 210 to realize the formwork opening construction of the formwork system.
The fifth step further includes, as shown in fig. 2 and fig. 4, that the mold frame moving vehicle includes a main frame 310, a telescopic frame 320, an adjusting device, rollers 350, a winch (not shown in the drawings) and a fixed pulley, wherein the rollers 350 are installed at the bottom of the main frame 310, the winch and the fixed pulley are disposed along an axis and connected to the top of the main frame 310, the two telescopic frames 320 are symmetrically disposed and sleeved at two sides of the main frame 310, the adjusting device includes an adjusting lifter 341 vertically disposed along the axis of the main frame 310, and two supporting guide rods 342 symmetrically disposed at two sides of the adjusting lifter 341, one ends of the two supporting guide rods 342 are connected to the top ends of the adjusting lifter 341, the other ends of the two supporting guide rods 342 are respectively connected to the two telescopic frames 320, the telescopic frame 320 includes two sliding rods disposed in parallel and spaced relation, a connecting rod 321 connected between the two sliding rods, and a bracket connected to the connecting part of the sliding rods and the connecting rod 321, the bracket includes a supporting lifter 324 fixed to the end of the sliding rod, and a supporting plate 325 connected to the top end of the supporting rod 324. The telescopic height of the adjusting lifters 341 is adjusted to push the two telescopic frames 320 to move reversely along the X-axis direction, the heights of the supporting lifters 324 of the brackets are adjusted to enable the supporting plates 325 of the brackets to be positioned on the same horizontal plane and keep a certain distance with the casters 47 of the supporting frame body 100, telescopic guide rods at two ends of the main frame 310 are kept in a contracted state, the die frame moving vehicle 300 is operated to the bottom of the supporting frame body 100 to enable the supporting plates 325 of the brackets to correspond to the positions of the casters 47 of the supporting frame body 100, the bottom lifters 46 of the supporting frame body 100 are controlled to contract to enable the supporting frame body 100 to be erected on the brackets of the two telescopic frames 320, the telescopic guide rods at two ends of the main frame extend and keep a certain small distance with the bottom wall of the poured box culvert structure 2, one end of the steel wire rope 510 is wound around the winch, the other end of the steel wire rope 510 is wound around the fixed pulley 500, the winch is used for winding up the steel wire rope 510, the length of the steel wire rope 510 between the die frame moving vehicle 300 and the supporting frame body 100 is shortened, the die frame moving vehicle 300 and the template system can be supported on the die frame moving vehicle 300 and integrally walked to the next construction section of the structure by using the steel wire rope 510, and the lower construction section system is controlled to move along the automatic construction section and the lower section system.
As shown in fig. 4, the telescopic guide rod of the formwork moving vehicle 300 includes two hollow cross rods 311 fixedly connected to the ends of the longitudinal rods and two support rods 314 respectively embedded in the two hollow cross rods 311, the installation directions of the two support rods 314 are opposite, the side walls of the hollow cross rods 311 and the support rods 314 are respectively provided with a plurality of equally spaced bolt holes, the ends of the two support rods 314 are respectively connected with a guide wheel 315, the two support rods 314 respectively reversely extend out, and after the guide wheels 315 are propped against the bottom wall of the poured box culvert structure 2, the positioning bolts penetrate through the bolt holes on the hollow cross rods 311 and the support rods 314 and are locked and fixed, so that the formwork moving vehicle 300 can keep equal spacing with the bottom wall in the sliding process, and the occurrence of deviation of the formwork moving vehicle 300 in the moving process is avoided, thereby causing safety accidents. The extension length of the telescopic guide rods at two sides of the main frame 310 is adjustable, so that the telescopic guide rods can be flexibly suitable for box culvert concrete structure construction with different structures and different cross section sizes, and the stability of the formwork moving vehicle 300 in the advancing process is improved.
As shown in fig. 1 and 6, the first step further includes that the adjustable horizontal beam 20 includes a first horizontal beam made of i-steel, a second horizontal beam made of two channel steels arranged at intervals and opposite to each other, a web plate of the first horizontal beam is adapted to a gap size between the two channel steels of the second horizontal beam, so that the first horizontal beam can be sleeved in a gap of the second horizontal beam and slide relatively, the web plates of the first horizontal beam and the second horizontal beam are respectively provided with a plurality of bolt holes arranged at intervals, positioning bolts penetrate through the bolt holes of the first horizontal beam and the second horizontal beam and are locked and fixed, the other ends of the first horizontal beam and the second horizontal beam are vertically connected with side plates provided with the bolt holes, the side plates of the first horizontal beam and the second horizontal beam are respectively connected with the two side support door frames 10 by bolts, and the length of the adjustable horizontal beam 20 is adjusted, so that the width of the support frame 100 along the X-axis direction is adapted to the width of the intended casting box culvert structure.
The side mold lifter 42, the bottom lifter 46, the supporting lifter 324, and the adjusting lifter 341 in the present embodiment may be screw-screw lifters, which are, of course, only one example, and the lifters are not limited thereto.
The above description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any alterations and modifications made by those skilled in the art based on the above disclosure are intended to fall within the scope of the claims.
Claims (6)
1. The construction method of the double-hole box culvert in the underground engineering is characterized by comprising the following steps:
Firstly, excavating foundation pit earthwork, conveying a support frame body and a template system of two assembled adjustable trolley formwork systems to a first construction section of a double-hole box culvert to be poured, and arranging the support frame body and the template system on the top of a poured box culvert structure, wherein the poured box culvert structure comprises a foundation slab and a bottom wall body which are integrally poured by precast concrete;
the second step, the control system controls the wall surface supporting elevators on two sides of the supporting frame body to extend and prop against the bottom wall body of the poured box culvert structure respectively, simultaneously controls the bottom elevator of the supporting frame body to extend and support on the foundation slab, and adjusts the screw rod jacking top die assembly to the designed height, controls the screw rod of the angle die elevator to extend, pushes the angle die panel to extend and splice with the top die assembly, controls the side die elevator to extend, pushes the side die assembly to extend and splice with the angle die panel, and hoists and binds the steel bars of the outer wall body, the middle wall body and the top plate of the box culvert structure to be poured;
reinforcing side mold assemblies at two sides of the middle wall body of the double-hole box culvert by adopting a counter-pulling screw rod, and pouring concrete of the middle wall body to the bottom of the top plate;
Fourthly, after the concrete structural strength of the middle wall meets the requirement, erecting a plurality of transverse braces on two sides of the middle wall, wherein one end of each transverse brace is propped against a side die assembly close to the middle wall, the other end of each transverse brace is propped against a side die assembly close to the side wall to be reinforced, and the outer wall and the top plate are poured with concrete;
fifthly, after the strength of the concrete structure meets the requirement, the control system controls the die-withdrawing of the adjustable trolley die-set system, operates the die-set moving vehicle to the bottom of the supporting frame body, so that the supporting frame body and the template system are supported on the die-set moving vehicle, and operates the die-set moving vehicle to walk to the next section to be poured of the box culvert structure to be poured;
And sixthly, repeating the second step to the fifth step until the concrete pouring construction of the box culvert structure to be poured is completed, and backfilling earthwork on the top of the top plate.
2. The method for constructing the double-hole box culvert in the underground engineering according to claim 1, wherein the step of withdrawing the adjustable trolley formwork system in the fifth step is characterized in that wall surface supporting elevators on two sides of the supporting frame body are controlled to retract to leave the bottom wall body of the poured box culvert structure, and the side formwork elevators, the angle formwork elevators and the bottom elevators are controlled to retract sequentially to perform the mold opening construction.
3. The construction method of the double-hole box culvert in the underground engineering of claim 1, wherein the fifth step further comprises that the formwork moving vehicle comprises a main frame, telescopic frames, an adjusting device, rollers, a winch and fixed pulleys, wherein the plurality of rollers are arranged at the bottom of the main frame, the winch and the fixed pulleys are connected to the top of the main frame, the two telescopic frames are symmetrically arranged and sleeved on two sides of the main frame, the adjusting device comprises an adjusting lifter vertically arranged along the axis of the main frame, and two supporting guide rods symmetrically arranged on two sides of the adjusting lifter, one ends of the two supporting guide rods are connected to the top ends of the adjusting lifter, the other ends of the two supporting guide rods are respectively connected to the two telescopic frames, the telescopic frames comprise two sliding rods which are arranged in parallel and at intervals, a connecting rod connected between the two sliding rods, and a bracket connected to the connecting part of the sliding rods, the bracket comprises a supporting lifter fixed at the end of the sliding rod, and a supporting plate connected to the top end of the screw rod of the supporting lifter, the supporting lifter is symmetrically arranged on two sides of the main frame, the two supporting lifters are positioned on the same horizontal plane, one end of the supporting lifter is used for keeping the two supporting frames in a telescopic frame in a state, the telescopic frame body is in a telescopic frame moving state, and the bottom of the supporting frame is enabled to be in a telescopic frame supporting frame body corresponding to the bottom of the supporting frame, and the supporting frame is enabled to be contracted to be in a supporting bottom to be in a supporting position corresponding to the supporting frame; the telescopic guide rods at the two ends of the main frame are stretched to enable the main frame to be in contact with the bottom wall body of the poured box culvert structure, one end of the steel wire rope is wound on the winch, the other end of the steel wire rope is wound on the fixed pulley and connected with the anchoring piece, the winch winds up the steel wire rope, the length of the steel wire rope between the mould frame moving vehicle and the anchoring piece is shortened, the mould frame moving vehicle carries the support frame body and the template system to walk to the next construction section along the Z-axis direction.
4. The construction method of the double-hole box culvert in the underground engineering of claim 3, wherein the telescopic guide rod of the formwork moving vehicle comprises two parallel hollow cross rods fixedly connected to the end parts of the longitudinal rods, and two support rods respectively embedded in the two hollow cross rods, the installation directions of the two support rods are opposite, the side walls of the hollow cross rods and the support rods are respectively provided with a plurality of equally-spaced bolt holes, the end parts of the two support rods are respectively connected with guide wheels, and after the two support rods respectively reversely extend out and the guide wheels are propped against the bottom wall body of the poured box culvert structure, the positioning bolts penetrate through the bolt holes on the hollow cross rods and the support rods and are locked and fixed, so that the formwork moving vehicle can keep equal spacing with the bottom wall body in the sliding process.
5. The method for constructing the double-hole box culvert in the underground engineering is characterized by further comprising the first step of transversely arranging and bolting a plurality of adjustable horizontal beams between two support frames of the support frame body, wherein the adjustable horizontal beams comprise a first horizontal beam and two second horizontal beams which are arranged at intervals and oppositely, the first horizontal beam can be sleeved in a gap of the second horizontal beam and slide relatively, side plates of the first horizontal beam and the second horizontal beam are respectively bolted with the support frames at two sides, the length of the adjustable horizontal beams is adjusted, the width of the support frame body along the X-axis direction is matched with the width of a box culvert structure to be poured, and positioning bolts penetrate through bolt holes of the first horizontal beam and the second horizontal beam and are locked and fixed.
6. The method for constructing a double-hole box culvert in underground engineering according to claim 1, wherein the side mold lifter, the bottom lifter, the supporting lifter and the adjusting lifter are all screw rod lifters.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112681162A (en) * | 2021-01-15 | 2021-04-20 | 四川路航建设工程有限责任公司 | Construction method for movable split mounting type light formwork cast-in-situ box culvert |
| CN113914364A (en) * | 2021-11-30 | 2022-01-11 | 中国二十冶集团有限公司 | Comprehensive pipe gallery construction method and one-side formwork structure of side wall of comprehensive pipe gallery |
| CN219410962U (en) * | 2023-01-12 | 2023-07-25 | 中建五局土木工程有限公司 | Comprehensive pipe rack side wall and top plate supporting system |
| CN118653508A (en) * | 2024-07-02 | 2024-09-17 | 上海建工集团股份有限公司 | How to use the adjustable trolley mold frame system |
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- 2025-06-17 CN CN202510803848.6A patent/CN120311620A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112681162A (en) * | 2021-01-15 | 2021-04-20 | 四川路航建设工程有限责任公司 | Construction method for movable split mounting type light formwork cast-in-situ box culvert |
| CN113914364A (en) * | 2021-11-30 | 2022-01-11 | 中国二十冶集团有限公司 | Comprehensive pipe gallery construction method and one-side formwork structure of side wall of comprehensive pipe gallery |
| CN219410962U (en) * | 2023-01-12 | 2023-07-25 | 中建五局土木工程有限公司 | Comprehensive pipe rack side wall and top plate supporting system |
| CN118653508A (en) * | 2024-07-02 | 2024-09-17 | 上海建工集团股份有限公司 | How to use the adjustable trolley mold frame system |
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