CN110031173A - A kind of high-precision heavy track embedded part construction method - Google Patents

A kind of high-precision heavy track embedded part construction method Download PDF

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Publication number
CN110031173A
CN110031173A CN201810774475.4A CN201810774475A CN110031173A CN 110031173 A CN110031173 A CN 110031173A CN 201810774475 A CN201810774475 A CN 201810774475A CN 110031173 A CN110031173 A CN 110031173A
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China
Prior art keywords
steel plate
track embedded
embedded
foundation pit
segment
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CN201810774475.4A
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CN110031173B (en
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王丽梅
袁银书
付国刚
张振禹
郭建东
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China Builds Six Offices Civil Engineering Co Ltd
China Construction Sixth Engineering Division Co Ltd
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China Builds Six Offices Civil Engineering Co Ltd
China Construction Sixth Engineering Division Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/08Shock-testing

Abstract

The invention discloses a kind of high-precision heavy track embedded part construction methods, the following steps are included: excavating spill strip foundation pit according to surveying setting-out position;Carry out Foundation treatment, pre-embedded steel slab and steel bar end;One group of support frame is installed on every block of steel plate;Attachment rail embedded part is distinguished in the left side of the foundation pit and right side and adjusts installation accuracy during the installation process, then the casting concrete in foundation pit in two steps.This method preferably solves large-scale, high-precision embedded part construction orientation problem, so that the installation of simulated collision test equipment is very well using positioning supporting frame, real-time accuracy measurement is increased.It arranges that two theodolites guarantee support frame installation accuracy in the direction XY, guarantees the precision in track embedded part direction.

Description

A kind of high-precision heavy track embedded part construction method
Technical field
The present invention relates to a kind of embedded part construction methods, more particularly to a kind of high-precision heavy track embedded part construction method.
Background technique
With the continuous development of national science and technology level and the quickening of industrialization of scientific and technological achievements paces, various high-tech laboratories For the needs that detection device is accurately installed, more stringent requirements are proposed for manufacture and installation to embedded part, it is desirable that accuracy of manufacture height, It is embedded accurate, and the weight of prefabricated embedded part is continuously increased, and the weight of many single embedded parts of heavy construction is all in 300~600kg Left and right, what is had is weighing several tons, and the quantity of prefabricated embedded part board bottom dowel (or anchor slab) is also more and more, this is just greatly increased The installation difficulty of embedded part, influences installation accuracy, and the installation accuracy of prefabricated embedded part also directly affects the standard of test data True property.Automobile engineering simulated collision test, main function are that simulation test vehicle collision moment, interior components are to people The extent of injury of body.Specific operation process is that interior components and simulation people are placed on a moveable platform, puts down Platform can simulate when vehicle collides by dynamic to static state, check whether vehicle interior part can be scattered, The dangerous situations such as splashing, the data on the other hand to be come to harm from the simulation person.Because of testing equipment demand, simulated crash Laboratory's embedded part wherein includes multiple groups track embedded part, to be taken effective measures to reinforce the installation of large scale prefabricated embedded part, it is ensured that bury The installation accuracy of part.
Application No. is the Chinese patents of CN201720473182.3 to disclose a kind of " deep hole plane gate embedded parts installation Device ", the device include the support frame of rectangle;Support frame as described above is fixed at the top of gate slot aperture, and middle part is equipped with lateral consolidate Determine frame, eyelet strip is connected on fixed frame, the center of eyelet strip is equipped with threading hole;Wire pass through threading hole and with gravity sash weight Connection.The gravity sash weight is placed in the oil drum for being loaded with liquid.This patent is not suitable for the rail of simulative automobile crash tests The construction of road embedded part.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of construction and installation conveniently, secured, precision is high, And structural bearing capacity and the big high-precision heavy track embedded part construction method of rigidity.
A kind of high-precision heavy track embedded part construction method, the following steps are included:
(1) it in the position surveying setting-out of high-precision heavy track embedded part to be installed, is then excavated according to surveying setting-out position Spill strip foundation pit;
(2) reinforcing bar and casting concrete wall surface are installed respectively at the bottom wall of foundation pit and surrounding side wall and foundation pit top edge, Along foundation pit length direction and time interval is embedded with steel plate among foundation pit in the concrete of the bottom wall of foundation pit, in the bottom wall of foundation pit Along foundation pit length direction and in the left side of foundation pit and the pre-buried two rows of steel bar ends of right side difference in concrete;
(3) one group of support frame is installed on every block of steel plate, by the second of each group of support frame the secondary transverse crown bar and foundation pit bottom wall On steel plate connection, pacify in the horizontal direction respectively in the left side wall end of the main transverse crown bar of each group of support frame and right side wall end Left bolt and right bolt are filled, then respectively arranges a theodolite in the both direction in length and breadth of the foundation pit, in length and breadth to track The horizontal accuracy in direction is detected respectively;Every group of support frame includes two spaced perpendicular mandrils in left and right along the vertical direction, Top and bottom between two perpendicular mandrils 14 are connected with the main transverse crown bar and the second secondary horizontal top in the horizontal direction respectively It is secondary horizontal to be connected with first between two perpendicular mandrils between the main transverse crown bar and the second secondary transverse crown bar in the horizontal direction for bar Mandril;
(4) first segment track embedded part, the first segment track embedded part are installed at the left side beginning of the foundation pit Including the bottom wall steel plate being supported on foundation pit bottom wall and parallel interval, the roof steel plate right above bottom wall steel plate is set, it is described Steel bar end on the bottom wall of bottom wall steel plate and foundation pit is weldingly connected, and the rear and front end of the roof steel plate is respectively supported adjacent On the left side roof of the main transverse crown bar of one group of support frame, by setting along the vertical direction between the bottom wall steel plate and roof steel plate The twice bolt set is fixedly linked;
(5) step (4) is repeated to bury in the installation of the right side beginning of the foundation pit with the first segment track The identical second section track embedded part of part structure, the second section track embedded part and first segment track embedded part are with support frame Bilateral symmetry face be left and right symmetrically arranged for symmetry axis;
(6) installation accuracy, specific steps are adjusted are as follows:
(a) the roof steel plate of first segment track embedded part and the roof steel of second section track embedded part are measured by theodolite The horizontal position deviation of plate;
(b) is once adjusted by the bolt of the bolt and second section track embedded part that turn first segment track embedded part The horizontal position of the roof steel plate of the roof steel plate and second section track embedded part of one segment track embedded part, and during the adjustment With theodolite testing the roof steel plate horizontal position deviation of first segment track embedded part, second section track are buried in adjustment The top of the roof steel plate horizontal position deviation of part and the roof steel plate of first segment track embedded part and second section track embedded part Horizontal position deviation between wall steel plate is less than 0.25mm;
(c) the left bolt and right bolt adjusted on the main transverse crown bar makes left bolt and right bolt squeeze main cross respectively The roof steel plate of the secondary adjustment first segment track embedded part of the roof steel plate supported on mandril and the top of second section track embedded part The horizontal position of wall steel plate, so that the roof steel plate horizontal position deviation of first segment track embedded part, second section track embedded part Roof steel plate horizontal position deviation and first segment track embedded part roof steel plate and second section track embedded part roof Horizontal position deviation between steel plate is less than 0.2mm;
(d) bolt by the left and right ends of the first secondary transverse crown bar respectively with the track embedded part of corresponding side is fixedly linked;
(7) step (4)-(6) are repeated, third segment track embedded part is installed in first segment track embedded part end, symmetrical Second section track embedded part end is installed by fourth segment track embedded part;Each segment track embedded part in adjustment left side during the installation process The first roof steel plate between horizontal departure, each segment track embedded part in right side the second roof steel plate between horizontal departure with And the horizontal position deviation between the roof steel plate of each track embedded part of the roof steel plate and right side of each track embedded part in left side point Not within 0.2mm, then in the junction of the first segment track embedded part end and third segment track embedded part head end Insertion thin slice steel plate in position is inserted into the second section track embedded part end and fourth segment track embedded part head end handover position Thin slice steel plate;
(8) repeating step (7), successively the track of segment buries on rear side of installation behind last segment track embedded part in left side Part, behind last segment track embedded part on right side successively on rear side of installation segment track embedded part, until completing entire track Embedded part installation;
(9) roof steel plate bottom wall and right side roof steel plate bottom of first step concrete to left side are poured in the foundation pit At wall hypodermis preset distance;
(10) theodolite testing track embedded part roof steel plate integral level position deviation is used, if each section of track embedded part roof Horizontal position deviation between steel plate is more than 0.2mm, then finely tunes the bolt of the track embedded part of correspondent section until track embedded part roof Steel plate integral level position deviation is within 0.2mm;
(11) the second step concrete is poured in the foundation pit until foundation pit top surface.
This method preferably solves large-scale, high-precision embedded part apply using positioning supporting frame, real-time accuracy measurement is increased Work orientation problem, so that the installation of simulated collision test equipment is very well.Arrange that two theodolites guarantee support frame in the direction XY Installation accuracy guarantees the precision in track embedded part direction.Thin slice steel plate is inserted at handover position between track embedded part, reinforces docking essence Accuracy.
Detailed description of the invention
Fig. 1 is a kind of supporting frame construction structural schematic diagram of high-precision heavy track embedded part construction method of the invention;
Fig. 2 is a kind of track embedded part constructing structure schematic diagram of high-precision heavy track embedded part construction method of the invention;
Fig. 3 is the support frame and track embedded part mounting structure of a kind of high-precision heavy track embedded part construction method of the invention Schematic diagram;
Specific embodiment
The present invention is described in detail in the following with reference to the drawings and specific embodiments.
A kind of high-precision heavy track embedded part construction method of the present invention as shown in drawings, comprising the following steps:
(1) it in the position surveying setting-out of high-precision heavy track embedded part to be installed, is then excavated according to surveying setting-out position Spill strip foundation pit;
(2) reinforcing bar and casting concrete wall surface are installed respectively at the bottom wall of foundation pit 1 and surrounding side wall 2 and foundation pit top edge 3, Time interval is embedded with steel plate 16 along foundation pit length direction in the concrete of the bottom wall 1 of foundation pit and among foundation pit, in foundation pit 1 concrete of bottom wall in along foundation pit length direction and in the left side of foundation pit and the pre-buried two rows of steel bar ends 15 of right side difference.
(3) one group of support frame is installed on every block of steel plate, by the second of each group of support frame the secondary transverse crown bar 12 and foundation pit bottom Steel plate 16 on wall 1 connects.In the left side wall end of the main transverse crown bar 10 of each group of support frame and right side wall end respectively along water Square to left bolt 17-1 and right bolt 17-2 is installed, a warp is respectively then arranged in the both direction in length and breadth of the foundation pit Latitude instrument detects the horizontal accuracy in track direction in length and breadth respectively;Every group of support frame include two along the vertical direction between left and right Every the perpendicular mandril 14 of setting, the top and bottom between two perpendicular mandrils 14 are connected with the main cross in the horizontal direction respectively Mandril 10 and the second secondary transverse crown bar 12, two perpendicular mandrils 14 between the main transverse crown bar 10 and the second secondary transverse crown bar 12 it Between be connected with the first secondary transverse crown bar 11 in the horizontal direction;
13 cross-fixing of preferred two scissors bars is in two perpendicular mandrils 14,11 and of the secondary transverse crown bar of main transverse crown bar 10, first On second secondary transverse crown bar 12.
(4) first segment track embedded part, the first segment track embedded part are installed at the left side beginning of the foundation pit Including the bottom wall steel plate 4 being supported on foundation pit bottom wall and parallel interval, the roof steel plate 6 right above bottom wall steel plate 4, institute are set The bottom wall steel plate 4 stated is weldingly connected with the steel bar end 15 on the bottom wall 1 of foundation pit and connects.The rear and front end of the roof steel plate 6 point It is not supported adjacent on the left side roof of the main transverse crown bar 10 of one group of support frame.Lead between the bottom wall steel plate and roof steel plate The twice bolt 5 being arranged along the vertical direction is crossed to be fixedly linked;
(5) step (4) is repeated to bury in the installation of the right side beginning of the foundation pit with the first segment track The identical second section track embedded part of part structure.The second section track embedded part and first segment track embedded part is with support frame Bilateral symmetry face be left and right symmetrically arranged for symmetry axis;
(6) installation accuracy, specific steps are adjusted are as follows:
(a) the roof steel plate 6 of first segment track embedded part and the roof of second section track embedded part are measured by theodolite The horizontal position deviation of steel plate 7;
(b) it is once adjusted by the bolt 8 of the bolt 5 and second section track embedded part that turn first segment track embedded part The horizontal position of the roof steel plate 7 of the roof steel plate 6 and second section track embedded part of first segment track embedded part, and adjusting Make 6 horizontal position deviation of roof steel plate, the second section of first segment track embedded part in journey with theodolite testing in adjustment The 7 horizontal position deviation of roof steel plate of track embedded part and the roof steel plate 6 and second section track of first segment track embedded part Horizontal position deviation between the roof steel plate 7 of embedded part is less than 0.25mm, such as 0.24mm;
(c) the left bolt 17-1 and right bolt 17-2 adjusted on the main transverse crown bar 10 makes left bolt 17-1 and right spiral shell Bolt 17-2 squeezes 6 He of roof steel plate of the secondary adjustment first segment track embedded part of the roof steel plate supported on main transverse crown bar 10 respectively The horizontal position of the roof steel plate 7 of second section track embedded part, so that 6 horizontal position of roof steel plate of first segment track embedded part Deviation, the 7 horizontal position deviation of roof steel plate of second section track embedded part and 6 and of roof steel plate of first segment track embedded part Horizontal position deviation between the roof steel plate 7 of second section track embedded part is less than 0.2mm;
(d) by the left and right ends of the first secondary transverse crown bar 11 respectively with bolt 5 (8) stationary phase of the track embedded part of corresponding side Even;
(7) step (4)-(6) are repeated, third segment track embedded part is installed in first segment track embedded part end, symmetrical Second section track embedded part end is installed by fourth segment track embedded part;Each segment track embedded part in adjustment left side during the installation process The first roof steel plate 6 between horizontal departure, each segment track embedded part in right side the second roof steel plate 7 between horizontal departure And the horizontal position between the roof steel plate 7 of each track embedded part of the roof steel plate 6 and right side of each track embedded part in left side is inclined Difference is not within 0.2mm.Then in the friendship of the first segment track embedded part end and third segment track embedded part head end Thin slice steel plate is inserted into socket part position, reinforces docking precision;In the second section track embedded part end and fourth segment track Embedded part head end joins position and is inserted into thin slice steel plate, reinforces docking precision.
(8) repeating step (7), successively the track of segment buries on rear side of installation behind last segment track embedded part in left side Part, behind last segment track embedded part on right side successively on rear side of installation segment track embedded part, until completing entire track Embedded part installation.
(9) roof steel plate bottom wall and right side roof steel plate bottom of first step concrete to left side are poured in the foundation pit At wall hypodermis preset distance, usually apart from right side roof steel plate bottom wall hypodermis 4.5cm-5cm.
(10) because the roof steel plate 7 of the roof steel plate 6 of first segment track embedded part and second section track embedded part installs water Flat deviation requirement is less than 0.2mm, it is likely that when pouring concrete, minor shifts occur for embedded part, in order to take fine tuning measure, really Embedded part installation accuracy is protected, with theodolite testing track embedded part roof steel plate integral level position deviation, if each section of track embedded part top Horizontal position deviation between wall steel plate is more than 0.2mm, then finely tunes the bolt of the track embedded part of correspondent section until track embedded part top Wall steel plate integral level position deviation is within 0.2mm.
(11) the second step concrete is poured in the foundation pit until foundation pit top surface.
Embodiment
(1) it in the position surveying setting-out of high-precision heavy track embedded part to be installed, is then excavated according to surveying setting-out position Spill strip foundation pit;
(2) reinforcing bar and casting concrete wall surface are installed respectively at the bottom wall of foundation pit 1 and surrounding side wall 2 and foundation pit top edge 3, Time interval is embedded with steel plate 16 along foundation pit length direction in the concrete of the bottom wall 1 of foundation pit and among foundation pit, in foundation pit 1 concrete of bottom wall in along foundation pit length direction and in the left side of foundation pit and the pre-buried two rows of steel bar ends 15 of right side difference.
(3) one group of support frame is installed on every block of steel plate, by the second of each group of support frame the secondary transverse crown bar 12 and foundation pit bottom Steel plate 16 on wall 1 connects.In the left side wall end of the main transverse crown bar 10 of each group of support frame and right side wall end respectively along water Square to left bolt 17-1 and right bolt 17-2 is installed, a warp is respectively then arranged in the both direction in length and breadth of the foundation pit Latitude instrument detects the horizontal accuracy in track direction in length and breadth respectively;Every group of support frame include two along the vertical direction between left and right Every the perpendicular mandril 14 of setting, the top and bottom between two perpendicular mandrils 14 are connected with the main cross in the horizontal direction respectively Mandril 10 and the second secondary transverse crown bar 12, two perpendicular mandrils 14 between the main transverse crown bar 10 and the second secondary transverse crown bar 12 it Between be connected with the first secondary transverse crown bar 11 in the horizontal direction;
Two 13 cross-fixings of scissors bar are secondary in two perpendicular mandrils 14, the secondary transverse crown bar 11 and second of main transverse crown bar 10, first On transverse crown bar 12.
(4) first segment track embedded part, the first segment track embedded part are installed at the left side beginning of the foundation pit Including the bottom wall steel plate 4 being supported on foundation pit bottom wall and parallel interval, the roof steel plate 6 right above bottom wall steel plate 4, institute are set The bottom wall steel plate 4 stated is weldingly connected with the steel bar end 15 on the bottom wall 1 of foundation pit and connects.The rear and front end of the roof steel plate 6 point It is not supported adjacent on the left side roof of the main transverse crown bar 10 of one group of support frame.Lead between the bottom wall steel plate and roof steel plate The twice bolt 5 being arranged along the vertical direction is crossed to be fixedly linked;
(5) step (4) is repeated to bury in the installation of the right side beginning of the foundation pit with the first segment track The identical second section track embedded part of part structure.The second section track embedded part and first segment track embedded part is with support frame Bilateral symmetry face be left and right symmetrically arranged for symmetry axis;
(6) installation accuracy, specific steps are adjusted are as follows:
(a) the roof steel plate 6 of first segment track embedded part and the roof of second section track embedded part are measured by theodolite The horizontal position deviation of steel plate 7;
(b) it is once adjusted by the bolt 8 of the bolt 5 and second section track embedded part that turn first segment track embedded part The horizontal position of the roof steel plate 7 of the roof steel plate 6 and second section track embedded part of first segment track embedded part, and adjusting Make 6 horizontal position deviation of roof steel plate, the second section of first segment track embedded part in journey with theodolite testing in adjustment The 7 horizontal position deviation of roof steel plate of track embedded part and the roof steel plate 6 and second section track of first segment track embedded part Horizontal position deviation between the roof steel plate 7 of embedded part is 0.24mm;
(c) the left bolt 17-1 and right bolt 17-2 adjusted on the main transverse crown bar 10 makes left bolt 17-1 and right spiral shell Bolt 17-2 squeezes 6 He of roof steel plate of the secondary adjustment first segment track embedded part of the roof steel plate supported on main transverse crown bar 10 respectively The horizontal position of the roof steel plate 7 of second section track embedded part, so that 6 horizontal position of roof steel plate of first segment track embedded part Deviation, the 7 horizontal position deviation of roof steel plate of second section track embedded part and 6 and of roof steel plate of first segment track embedded part Horizontal position deviation between the roof steel plate 7 of second section track embedded part is 0.19mm;
(d) by the left and right ends of the first secondary transverse crown bar 11 respectively with bolt 5 (8) stationary phase of the track embedded part of corresponding side Even;
(7) step (4)-(6) are repeated, third segment track embedded part is installed in first segment track embedded part end, symmetrical Second section track embedded part end is installed by fourth segment track embedded part;Each segment track embedded part in adjustment left side during the installation process The first roof steel plate 6 between horizontal departure, each segment track embedded part in right side the second roof steel plate 7 between horizontal departure And the horizontal position between the roof steel plate 7 of each track embedded part of the roof steel plate 6 and right side of each track embedded part in left side is inclined Difference is respectively 0.19mm.Then in the junction of the first segment track embedded part end and third segment track embedded part head end Position insertion thin slice steel plate, reinforces docking precision;In the second section track embedded part end and fourth segment track embedded part Head end joins position and is inserted into thin slice steel plate, reinforces docking precision.
(8) repeating step (7), successively the track of segment buries on rear side of installation behind last segment track embedded part in left side Part, behind last segment track embedded part on right side successively on rear side of installation segment track embedded part, until completing entire track Embedded part installation.
(9) roof steel plate bottom wall and right side roof steel plate bottom of first step concrete to left side are poured in the foundation pit Wall hypodermis 4.5cm.
(10) theodolite testing track embedded part roof steel plate integral level position deviation, each section of track embedded part roof steel plate are used Between horizontal position deviation be more than 0.2mm, finely tune the track embedded part of correspondent section bolt until track embedded part roof steel plate it is whole Body horizontal position deviation is in 0.19mm.
(11) the second step concrete is poured in the foundation pit until foundation pit top surface.Through detecting: simulated collision test is set Standby installation is smooth.

Claims (2)

1. a kind of high-precision heavy track embedded part construction method, it is characterised in that the following steps are included:
(1) in the position surveying setting-out of high-precision heavy track embedded part to be installed, spill then is excavated according to surveying setting-out position Strip foundation pit;
(2) reinforcing bar and casting concrete wall surface are installed respectively at the bottom wall of foundation pit and surrounding side wall and foundation pit top edge, in foundation pit Bottom wall concrete in along foundation pit length direction and time interval is embedded with steel plate among foundation pit, in the bottom wall coagulation of foundation pit Along foundation pit length direction and in the left side of foundation pit and the pre-buried two rows of steel bar ends of right side difference in native;
(3) one group of support frame is installed on every block of steel plate, it will be on the second of each group of support frame the secondary transverse crown bar and foundation pit bottom wall Steel plate connection is installed left in the horizontal direction respectively in the left side wall end of the main transverse crown bar of each group of support frame and right side wall end Then bolt and right bolt respectively arrange a theodolite in the both direction in length and breadth of the foundation pit, to track direction in length and breadth Horizontal accuracy detected respectively;Every group of support frame includes two spaced perpendicular mandrils in left and right along the vertical direction, two The top and bottom that root erects between mandril 14 are connected with the main transverse crown bar and the second secondary transverse crown bar in the horizontal direction respectively, The first secondary transverse crown bar is connected between two perpendicular mandrils between the main transverse crown bar and the second secondary transverse crown bar in the horizontal direction;
(4) first segment track embedded part is installed at the left side beginning of the foundation pit, the first segment track embedded part includes The roof steel plate right above bottom wall steel plate, the bottom wall is arranged in the bottom wall steel plate and parallel interval being supported on foundation pit bottom wall Steel bar end on the bottom wall of steel plate and foundation pit is weldingly connected, and the rear and front end of the roof steel plate is respectively supported adjacent one group On the left side roof of the main transverse crown bar of support frame, by being arranged along the vertical direction between the bottom wall steel plate and roof steel plate Twice bolt is fixedly linked;
(5) step (4) is repeated in the installation of the right side beginning of the foundation pit and the first segment track embedded part knot The identical second section track embedded part of structure, the second section track embedded part and first segment track embedded part are with a left side for support frame The right plane of symmetry is left and right symmetrically arranged for symmetry axis;
(6) installation accuracy, specific steps are adjusted are as follows:
(a) pass through the roof steel plate of the roof steel plate and second section track embedded part of theodolite measurement first segment track embedded part Horizontal position deviation;
(b) first segment is once adjusted by the bolt of the bolt and second section track embedded part that turn first segment track embedded part The horizontal position of the roof steel plate of the roof steel plate and second section track embedded part of section track embedded part, and side tune during the adjustment Treating selvedge theodolite testing makes the roof steel plate horizontal position deviation of first segment track embedded part, second section track embedded part The roof steel of the roof steel plate and second section track embedded part of roof steel plate horizontal position deviation and first segment track embedded part Horizontal position deviation between plate is less than 0.25mm;
(c) the left bolt and right bolt adjusted on the main transverse crown bar makes left bolt and right bolt squeeze main transverse crown bar respectively The roof steel plate of the secondary adjustment first segment track embedded part of the roof steel plate of upper support and the roof steel of second section track embedded part The horizontal position of plate, so that the top of the roof steel plate horizontal position deviation of first segment track embedded part, second section track embedded part The roof steel plate of the roof steel plate and second section track embedded part of wall steel plate horizontal position deviation and first segment track embedded part Between horizontal position deviation be less than 0.2mm;
(d) bolt by the left and right ends of the first secondary transverse crown bar respectively with the track embedded part of corresponding side is fixedly linked;
(7) step (4)-(6) are repeated, third segment track embedded part is installed in first segment track embedded part end, symmetrical second Segment track embedded part end is installed by fourth segment track embedded part;The of each segment track embedded part in adjustment left side during the installation process Horizontal departure and a left side between second roof steel plate of each segment track embedded part of horizontal departure, right side between one roof steel plate Horizontal position deviation between the roof steel plate of each track embedded part of the roof steel plate and right side of each track embedded part of side exists respectively Within 0.2mm, then inserted in the first segment track embedded part end and the handover position of third segment track embedded part head end Enter thin slice steel plate, is inserted into thin slice in the second section track embedded part end and fourth segment track embedded part head end handover position Steel plate;
(8) repeat step (7) behind last segment track embedded part in left side successively on rear side of installation segment track embedded part, The track embedded part of rear side segment is successively installed, until completing entire track embedded part peace behind last segment track embedded part on right side Dress;
(9) it is poured in the foundation pit under the first step concrete to the roof steel plate bottom wall and right side roof steel plate bottom wall in left side At skin preset distance;
(10) theodolite testing track embedded part roof steel plate integral level position deviation is used, if each section of track embedded part roof steel plate Between horizontal position deviation be more than 0.2mm, then finely tune the bolt of the track embedded part of correspondent section until track embedded part roof steel plate Integral level position deviation is within 0.2mm;
(11) the second step concrete is poured in the foundation pit until foundation pit top surface.
2. high-precision heavy track embedded part construction method according to claim 1, it is characterised in that: two scissors bars intersect It is fixed on two perpendicular mandrils, main transverse crown bar, the first secondary transverse crown bar and the second secondary transverse crown bar.
CN201810774475.4A 2018-07-16 2018-07-16 High-precision heavy rail embedded part construction method Active CN110031173B (en)

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