CN104895014B - A kind of construction method of high-altitude long-span cast-in-place arcading aqueduct supporting die system - Google Patents
A kind of construction method of high-altitude long-span cast-in-place arcading aqueduct supporting die system Download PDFInfo
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- CN104895014B CN104895014B CN201510289380.XA CN201510289380A CN104895014B CN 104895014 B CN104895014 B CN 104895014B CN 201510289380 A CN201510289380 A CN 201510289380A CN 104895014 B CN104895014 B CN 104895014B
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Abstract
The present invention relates to the construction method of a kind of high-altitude long-span cast-in-place arcading aqueduct supporting die system, main construction procedure includes: 1) basis and pier construction；2) landing slab construction；3) steel bracket is set up；4) military beam is set up；5) total sub-semigroup is set up；6) supporting die system horizontal position adjustment；7) supporting die system Pass line adjustment；8) aqueduct concrete construction.It is few that the construction method that the present invention relates to has steel usage amount, aqueduct construction can be carried out continuously, without removing former supporting die system and again setting up, each node bonding strength high between each stage aqueduct construction, having the advantages that speed of application is fast, construction effect is good, technical economic benefit is obvious.
Description
Technical field
The present invention relates to a kind of supporting die system construction method, particularly to the construction method of a kind of high-altitude long-span cast-in-place arcading aqueduct supporting die system.
Background technology
Aqueduct is the built on stilts water conveyance structure that conveying ditch water flow crosses over rivers and canals, road, a stretch of flatland in a hilly area, the mouth of a valley etc., it it is one of crossing of being most widely used in canal structure, concrete arch type aqueduct can give full play to concrete compression performance by it, cheap, is widely applied.Along with social need, current arched aqueduct just develops toward the direction of large span arcading.For large span arcading aqueduct construction, aqueduct formwork is the most scabrous problem in construction, full hall scaffold or the mode using steel bracket and scaffold to combine mainly is set up currently for large span arcading aqueduct supporting die system, these support membrane systems often use substantial amounts of scaffold and steel bracket, rent with costly, formwork system is set up, the Demolition Construction cycle is longer, and aqueduct formwork elevation measuring is difficult to control to.
For adapting to large span arcading aqueduct construction, accelerate setting up and removing speed of supporting die system, facilitate aqueduct concrete construction, there has been the supporting die system of some advanced technology, such as " ready-package form bracing system " (Authorization Notice No. CN201991222U), this supporting die system accelerates to a certain extent sets up speed, but this supporting die system is when large span arcading aqueduct, it is still necessary to use substantial amounts of steel；And for example " a kind of packaged type scaffold bowl fastening type fastener and operational approach thereof " (publication number: CN104264976A), by the innovation to bowl button parts, realize being connected with cross bar in any position of scaffold upright rod, facilitate the dismounting of supporting die system, but for arcading aqueduct construction, this supporting die system construction volume is the biggest, and cannot realize the control of absolute altitude；And for example the constructing device of rod bush " a kind of bowl fastening type steel pipe scaffold sweep the floor " (publication number: CN103015697A), by arranging adjustable base base plate and adjusting nut bottom system, realize the accurate control of supporting die system absolute altitude, but the position that this system cannot realize horizontal direction is moved, it is still necessary to use substantial amounts of scaffold.
In sum, existing arcading aqueduct supporting die system achieves more accurate Control architecture absolute altitude, accelerate supporting die system to a certain extent sets up and removes speed, but still deposits and can improve part, is mainly reflected in that steel usage amount is big, cannot realize the aspects such as supporting die system integral level displacement.
In consideration of it, it is fast to need a kind of speed of application of invention at present badly, it is achieved supporting die system horizontal displacement, can accurately control the construction method of the high-altitude long-span cast-in-place arcading aqueduct supporting die system of supporting die absolute altitude.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of steel usage amount is few, can be according to formwork erection height adjustment supporting die system absolute altitude, the construction method of reusable high-altitude long-span cast-in-place arcading aqueduct supporting die system.
The construction method of a kind of high-altitude long-span cast-in-place arcading aqueduct supporting die system, it is characterised in that comprise the following steps:
In order to realize above-mentioned technical purpose, present invention employs techniques below scheme:
1) bracket basis and pier construction: after aqueduct excavation of foundation pit, carries out abutment pier, middle pier and bracket basis construction, and wherein abutment pier and middle pier upper surface install pier gear and jack；Pre-embedded anchoring bolts during bracket basis construction；
2) landing slab construction: prefabrication landing slab, landing slab upper surface is reserved pulley track, after being transported to scene, the lower margin screw reserved on landing slab is passed foundation bolt, and fasten with nut；
3) steel bracket is set up: before steel bracket is set up, at steel bracket bottom welding with the support base plate of steel bracket gear；According to aqueduct height, determining the scaffolding height of steel bracket, for the highest aqueduct, interval 3m～5m highly arranges horizontal connection beam, and connection beam is welded to connect with steel bracket；
4) military beam is set up: for the military beam of end bay, first weld military beam base plate at lower surface, described military beam base plate lower surface correspondence pier gear position presets pulley track, and pulley track is stuck on pier gear by end bay military beam one end, and the other end is welded on steel bracket；In be all welded on steel bracket across military beam two ends；After military beam has been set up, upper surface lays vertical rod bottom plate, and is welded to connect with military beam, and then on vertical rod bottom plate, jack is laid at interval, finally lays vertical rod mounting plate；
5) total sub-semigroup is set up: first weld diameter is slightly larger than the vertical rod sleeve pipe of scaffold upright rod on vertical rod mounting plate, when setting up total sub-semigroup, bottom vertical rod is inserted in vertical rod sleeve pipe, and be welded to connect, cross bar is connected by bowl button with vertical rod, whole total sub-semigroup is set up and is overarched, top vertical rod overcoat push rod, push rod welded top push rod supporting plate, fine setting screw hole is preset on this push rod supporting plate, in fine setting screw hole, screw mandrel is set, screw on fine setting screw rod in fine setting screw hole, fine setting screw rod adjusts height clockwise or counterclockwise, arch bed die is fixed on fine setting screw rod；
6) supporting die system horizontal position adjustment: by pier gear and steel bracket gear, Level Promoting supporting die system, after being accurately positioned, jack is uniformly placed under support base plate, and the jack at synchronization of jacking up abutment pier, middle pier and support base plate, making to depart from bottom steel bracket gear pulley track bottom portion of groove, end bay military beam separates with pier gear；
7) supporting die system Pass line adjustment: the jack between synchronization of jacking up vertical rod bottom plate and vertical rod mounting plate, adjust the height of total sub-semigroup, after basically reaching aqueduct concrete construction height, by finely tuning screw rod clockwise or counterclockwise, absolute altitude is finely adjusted；
8) aqueduct concrete construction: install arch bed die in supporting die system, arch bed die installs on fine setting screw rod, carries out aqueduct concrete construction, after concrete curing to design strength, form removal subsequently, prepare next section of aqueduct construction；
9) next section of aqueduct construction: repeat construction procedure 6)～construction procedure 8), until whole aqueduct construction completes.
As preferably: step 1) described in abutment pier and Zhong Dun when pouring pre-buried gear fix reinforcing bar, gear fixes reinforcing bar bottom and abutment pier or middle pier reinforcement welding, and reinforcement welding fixed by pier gear axis and gear.
As preferably: step 1) each bracket basis pre-buried 2～4 row's foundation bolt 25, with bracket basis reinforcement welding bottom described foundation bolt, described foundation bolt top exceeds bracket basis upper surface 80mm～100mm.
As preferably: step 2) described in landing slab elongated reserved degree of depth 30mm of correspondence steel bracket gear position～40mm, the pulley track of width 10mm～15mm.
As preferably: step 3) described steel bracket bottom welding support base plate, support base plate is divided into and is put 2～3 row's steel bracket gears, described steel bracket tooth radius is 50mm～60mm, width is 9mm～14mm, and steel bracket gear is placed in the pulley track on platform 5 surface.
As preferably: step 4) described in jack square interval 800mm～1000mm be evenly arranged, and the elemental height of jack keeps consistent.
The invention has the beneficial effects as follows:
(1) after leading portion aqueduct construction completes, it is not necessary to carry out support membrane system removing and again setting up, only needing to move horizontally supporting die system along design aqueduct direction, carry out hypomere aqueduct construction, construction period substantially shortens.
(2) arch aqueduct formwork erection absolute altitude first jack between synchronization of jacking up vertical rod bottom plate and vertical rod mounting plate, realize the first successive step of absolute altitude, and by regulation fine setting screw rod, local formwork elevation measuring is accurately adjusted, later stage arch aqueduct construction quality is ensured.
(3) combination uses steel bracket and total sub-semigroup, reduces scaffold usage amount, and supporting die system lease expenses is relatively low.
Accompanying drawing explanation
Fig. 1 is high-altitude long-span of the present invention cast-in-place arcading aqueduct supporting die architectural schematic；
Fig. 2 is that steel bracket of the present invention, landing slab and bracket basis connect detail drawing；
Fig. 3 is that landing slab pulley track of the present invention is arranged and foundation bolt connection figure；
Fig. 4 is that military beam of the present invention is connected detail drawing with pier；
Fig. 5 is to be connected detail drawing with military beam bottom the total sub-semigroup of supporting die system top of the present invention；
Fig. 6 is that supporting die system total sub-semigroup top of the present invention is connected detail drawing with bed die；
Fig. 7 is high-altitude long-span of the present invention cast-in-place arcading aqueduct supporting die system erection construction flow chart；
Description of reference numerals: 1-steel bracket, 2-military beam, 3-total sub-semigroup, 4-bracket basis, 5-landing slab, 6-abutment pier, pier in 7-, 8-pier gear, reinforcing bar fixed by 9-gear, 10-jack, 11-vertical rod bottom plate, 12-vertical rod mounting plate, 13-support base plate, 14-steel bracket gear, 15-connection beam, 16-cross bar, 17-bowl button, 18-vertical rod, 19-vertical rod sleeve pipe, 20-push rod, 21-push rod supporting plate, 22-finely tunes screw rod, 23-arch bed die, 24-military beam base plate, 25-foundation bolt, 26-nut, 27-pulley track.
Detailed description of the invention
With embodiment, the present invention is described further below in conjunction with the accompanying drawings.Although the present invention will be described in conjunction with preferred embodiment, it should be understood that be not offered as limiting the invention in described embodiment.On the contrary, the present invention will contain alternative, modified model and the equivalent that can be included in the scope of the present invention that appended claims limits.
Fig. 1 is high-altitude long-span of the present invention cast-in-place arcading aqueduct supporting die architectural schematic.With reference to shown in Fig. 1, high-altitude long-span of the present invention cast-in-place arcading aqueduct supporting die system mainly includes that steel bracket 1, military beam 2, total sub-semigroup 3 and connection beam 15 form.
Before high-altitude long-span cast-in-place arcading aqueduct supporting die system is set up, initially with C40 concreting bracket basis 4, abutment pier 6 and middle pier 7.When pouring bracket basis 4, the foundation bolt 25 that each bracket basis 4 pre-buried 2～4 row is made up of Q235 steel, with bracket basis 4 reinforcement welding bottom foundation bolt 25, top exceeds bracket basis 4 upper surface 80mm～100mm；When pouring abutment pier 6 and middle pier 7 concrete, reinforcing bar 9 fixed by pre-buried gear, gear fix bottom reinforcing bar 9 with abutment pier 6 or middle pier 7 reinforcement welding, stretch out abutment pier 6 or middle pier 7 upper level be slightly above pier gear 8 radius length that the later stage installs.
With reference to shown in Fig. 2～Fig. 4, when bracket basis 4, abutment pier 6 and middle pier 7 concrete strength reach more than the 70% of design load, synchronize to carry out landing slab 5 construct, pier gear 8 and jack 10 installation.Landing slab 5 uses that Q345 steel is prefabricated to be formed, thickness is 70mm～90mm, corresponding elongated reserved degree of depth 30mm in steel bracket gear 14 position of landing slab 5～40mm, the pulley track 27 of width 10mm～15mm, reserve the diameter bolt hole slightly larger than foundation bolt 25 diameter in foundation bolt 25 position.After landing slab 5 installation, fasten with nut 26.
Before setting up steel bracket 1, at the support base plate 13 that bottom throat thickness is 15mm～20mm, support base plate lower surface installation radius is 50mm～60mm, the steel bracket gear 14 of width 9mm～14mm, during wherein steel bracket gear 14 is stuck in the pulley track 27 of landing slab 5 upper surface, the connection beam 15 that 3～5m welding are horizontal often set up by steel bracket 1.
With reference to shown in Fig. 1 and Fig. 4, set up military beam 2.Military beam for end bay, first at the military beam base plate 24 that lower surface throat thickness is 20mm～25mm, this military beam base plate 24 lower surface correspondence pier gear 8 position predetermined depth is the pulley track of 10mm～15mm, pulley track 27 is stuck on pier gear 8 by end bay military beam one end, and the other end is welded on steel bracket 1；In be all welded on steel bracket 1 across military beam two ends.After military beam 2 has been set up, upper surface laying depth is the vertical rod bottom plate 11 of 20mm～25mm, and is welded and fixed, and then interval 800mm～1000mm square lays jack 10, last laying depth 20mm～the Q345 steel plate of 25mm thickness.
With reference to Fig. 5, Fig. 6, top total sub-semigroup 3 is installed.Before installation, first on vertical rod mounting plate, weld diameter is slightly larger than scaffold upright rod 18, a length of 300mm～400mm, the vertical rod sleeve pipe 19 of wall thickness 20mm～30mm, when setting up total sub-semigroup 3, bottom vertical rod 18 is inserted in vertical rod sleeve pipe 19, and be welded to connect, cross bar 16 is connected by bowl button 17 with vertical rod 18, whole total sub-semigroup 3 is set up and is overarched, the push rod 20 of top vertical rod 18 overcoat wall thickness 20mm～30mm, the push rod supporting plate 21 that push rod 20 welded top thickness 20mm～25mm is thick, on this push rod supporting plate 21, preset diameters is the fine setting screw hole of 10mm～12mm, in fine setting screw hole, screw mandrel is set, screw in fine setting screw hole and finely tune screw rod 22, fine setting screw rod can adjust height clockwise or counterclockwise.Arch bed die 23 is fixed on fine setting screw rod 22.
Position integral translation supporting die system according to arch aqueduct, after being accurately positioned, puts into steel bracket base plate 13 times by jack 10, and synchronization of jacking up jack 10, makes steel bracket gear 14 de-orbit pulley 27；According to arch aqueduct absolute altitude, the jack 10 between synchronization of jacking up vertical rod bottom plate and vertical rod mounting plate, after absolute altitude is substantially accurate, adjust fine setting screw rod 22, it is achieved absolute altitude is accurately positioned.
Present invention also offers the construction method of above-mentioned high-altitude long-span cast-in-place arcading aqueduct supporting die system, mainly comprise the steps that
1) bracket basis 4 and pier construction: after aqueduct excavation of foundation pit acceptance(check), carry out abutment pier 6, middle pier 7, bracket basis 4 are constructed, wherein before abutment pier 6 and middle pier 7 concreting, reinforcing bar 9 fixed by pre-buried gear, after concrete strength reaches to be not less than the 70% of design load, pier gear 8 and jack 10 are installed；Pre-embedded anchoring bolts 25 when bracket basis 4 is constructed.
2) landing slab 5 is constructed: prefabrication landing slab 5, after being transported to scene, lower margin screw reserved on landing slab 5 is passed foundation bolt 25, and fastens with nut 26.
3) steel bracket 1 is set up: before steel bracket 1 is set up, at steel bracket 1 bottom welding with the support base plate 13 of steel bracket gear 8；According to aqueduct height, determining the scaffolding height of steel bracket 1, for the highest aqueduct, interval 3m～5m highly arranges horizontal connection beam 15, and connection beam 15 is welded to connect with steel bracket 1.
4) military beam 2 is set up: in ride upon steel bracket 1 top across military beam 2, be connected with steel bracket 1 at node use be welded to connect；First end bay military beam 2 lower surface welds military beam base plate 24, military beam base plate 24 reserves gear grooved at lower surface time prefabricated, when setting up, military beam 2 one end is welded with steel bracket 1, and the other end is placed on pier gear 8, and military beam base plate 24 gear grooved is corresponding with pier gear 8 position；After military beam 2 fixing-stable, upper surface one layer of steel vertical rod bottom plate 11 of tiling, vertical rod bottom plate 11 is welded to connect with military beam 2, vertical rod bottom plate is spaced 1m～1.2m square and lays jack 10, the initial absolute altitude in jack 10 top is consistent, then sets up bar mounting plate 12 on jack 10 upper berth.
5) total sub-semigroup 3 is set up: welded with vertical rod mounting plate 12 by supporting plate sleeve pipe 19 bottom total sub-semigroup 3,17 fixations are detained by bowl between cross bar 16 and vertical rod 18, total sub-semigroup 3 welded top push rod 20, the push rod supporting plate 21 of push rod 20 top welded bands bolt hole, fine setting screw rod 22 that supporting plate is screwed in advance.
6) supporting die system horizontal position adjustment: by pier gear 8 and steel bracket gear 14, Level Promoting supporting die system, jack at synchronization of jacking up abutment pier 6, middle pier 7, support base plate 13 after being accurately positioned, makes steel bracket gear 14 unsettled, and end bay military beam 2 separates with pier gear 8.
7) supporting die system Pass line adjustment: the jack 10 between synchronization of jacking up vertical rod bottom plate 11 and vertical rod mounting plate 12, adjust the height of total sub-semigroup 3, after basically reaching aqueduct concrete construction height, by finely tuning screw rod 22 clockwise or counterclockwise, absolute altitude is finely adjusted.
8) aqueduct concrete construction: install arch bed die 23 in supporting die system, arch bed die 23 is located on fine setting screw rod 22, carries out aqueduct concrete construction, after concrete curing to design strength, form removal subsequently, prepare next section of aqueduct construction.
9) next section of aqueduct construction: repeat construction procedure 6)～construction procedure 8), until whole aqueduct construction completes.
Claims (6)
1. the construction method of a high-altitude long-span cast-in-place arcading aqueduct supporting die system, it is characterised in that comprise the following steps:
1) bracket basis (4) and pier construction: after aqueduct excavation of foundation pit, carry out abutment pier (6), middle pier (7) and support
Basis (4) construction, wherein abutment pier (6) and middle pier (7) upper surface install pier gear (8) and jack (10)；Support
Pre-embedded anchoring bolts (25) during the construction of basis (4)；
2) landing slab (5) is constructed: prefabrication landing slab (5), and landing slab (5) upper surface reserves pulley track (27),
After being transported to scene, upper for landing slab (5) reserved lower margin screw is passed foundation bolt (25), and fasten with nut (26)；
3) steel bracket (1) is set up: before steel bracket (1) is set up, at steel bracket (1) bottom welding with steel bracket gear (14)
Support base plate (13)；According to aqueduct height, determine the scaffolding height of steel bracket (1), for the highest aqueduct,
Highly arranging horizontal connection beam (15) every 3m～5m, connection beam (15) is welded to connect with steel bracket (1)；
4) military beam (2) is set up: for the military beam (2) of end bay, first in lower surface welding military beam base plate (24), institute
State military beam base plate (24) lower surface correspondence pier gear (8) position and preset pulley track, military beam (2) one end of end bay
Being stuck in by pulley track on pier gear (8), the other end is welded on steel bracket (1)；In across military beam (2) two ends equal
It is welded on steel bracket (1)；After military beam (2) has been set up, upper surface lays vertical rod bottom plate (11), and and military beam
(2) being welded to connect, then jack (10) is laid at the upper interval of vertical rod bottom plate (11), finally lays vertical rod mounting plate (12)；
5) total sub-semigroup (3) is set up: first vertical rod mounting plate (12) upper weld diameter standing slightly larger than scaffold upright rod
Rod bush (19), when setting up total sub-semigroup (3), bottom vertical rod (18) is inserted in vertical rod sleeve pipe (19), and welds
Connecting, cross bar (16) is connected by bowl button (17) with vertical rod (18), and whole total sub-semigroup (3) is set up and overarched,
Top vertical rod (18) overcoat push rod (20), push rod (20) welded top push rod supporting plate (21), on this push rod supporting plate (21)
Preset fine setting screw hole, screw mandrel is set in fine setting screw hole, fine setting screw rod (22) of screwing in fine setting screw hole, fine setting screw rod (22)
Adjusting height clockwise or counterclockwise, arch bed die (23) is fixed on fine setting screw rod；
6) supporting die system horizontal position adjustment: by pier gear (8) and steel bracket gear (14), Level Promoting supports
Die body system, after being accurately positioned, is uniformly placed on jack (10) under support base plate (13), and synchronization of jacking up abutment pier, in
Jack (10) at pier and support base plate, makes steel bracket gear (14) bottom depart from pulley track (27) bottom portion of groove,
End bay military beam separates with pier gear；
7) supporting die system Pass line adjustment: very heavy between synchronization of jacking up vertical rod bottom plate (11) and vertical rod mounting plate (12)
Top (10), adjusts the height of total sub-semigroup (3), after basically reaching aqueduct concrete construction height, by clockwise or
Rotary fine adjustment screw rod (22), is finely adjusted absolute altitude counterclockwise；
8) aqueduct concrete construction: install arch bed die (23) in supporting die system, arch bed die (23) is located at fine setting
On screw rod (22), carrying out aqueduct concrete construction subsequently, after concrete curing to design strength, form removal, under preparation
One section of aqueduct construction；
9) next section of aqueduct construction: repeat construction procedure 6)～construction procedure 8), until whole aqueduct construction completes.
The construction method of high-altitude long-span the most according to claim 1 cast-in-place arcading aqueduct supporting die system, its feature exists
In step 1) described in abutment pier (6) He Zhongdun (7) when pouring pre-buried gear fix reinforcing bar (9), gear fixes reinforcing bar (9)
Bottom and abutment pier (6) or middle pier (7) reinforcement welding, pier gear (8) axis is fixed reinforcing bar (9) and is welded with gear.
The construction method of high-altitude long-span the most according to claim 1 cast-in-place arcading aqueduct supporting die system, its feature exists
In step 1) each bracket basis (4) pre-buried 2～4 row's foundation bolt (25), described foundation bolt (25) bottom with
Frame basis (4) reinforcement welding, described foundation bolt (25) top exceeds bracket basis (4) upper surface 80mm～100mm.
The construction method of high-altitude long-span the most according to claim 1 cast-in-place arcading aqueduct supporting die system, its feature exists
In step 2) described in corresponding steel bracket gear position elongated reserved degree of depth 30mm of landing slab (5)～40mm, width 10mm～
The pulley track (27) of 15mm.
The construction method of high-altitude long-span the most according to claim 1 cast-in-place arcading aqueduct supporting die system, its feature exists
In: step 3) described steel bracket (1) bottom welding support base plate (13), 2～3 row's steel are set under support base plate (13) and prop up
Frame gear (14), described steel bracket gear (14) radius is 50mm～60mm, width is 9mm～14mm, steel bracket gear (14)
It is placed in the pulley track on landing slab (5) surface.
The construction method of high-altitude long-span the most according to claim 1 cast-in-place arcading aqueduct supporting die system, its feature exists
In step 4) described in jack (10) square interval 800mm～1000mm be evenly arranged, and jack is initial high
Degree keeps consistent.
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| CN201510289380.XA CN104895014B (en) | 2015-05-28 | 2015-05-28 | A kind of construction method of high-altitude long-span cast-in-place arcading aqueduct supporting die system |
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| CN201510289380.XA CN104895014B (en) | 2015-05-28 | 2015-05-28 | A kind of construction method of high-altitude long-span cast-in-place arcading aqueduct supporting die system |
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| CN106193055B (en) * | 2016-09-09 | 2018-06-22 | 中建三局集团有限公司 | A kind of subway foundation pit liftable support system and its lifting construction method |
| CN111945572B (en) * | 2020-08-18 | 2022-02-25 | 中交二航局第二工程有限公司 | Multi-connected arch bridge erecting machine and multi-connected arch bridge erecting method |
| CN112726517A (en) * | 2020-10-21 | 2021-04-30 | 云南建投第一勘察设计有限公司 | Construction method of aqueduct above bridge |
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