CN206015538U - A kind of constructing device of railway box culvert advancing continuouss construction beam - Google Patents
A kind of constructing device of railway box culvert advancing continuouss construction beam Download PDFInfo
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- CN206015538U CN206015538U CN201620831333.3U CN201620831333U CN206015538U CN 206015538 U CN206015538 U CN 206015538U CN 201620831333 U CN201620831333 U CN 201620831333U CN 206015538 U CN206015538 U CN 206015538U
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Abstract
The utility model discloses a kind of constructing device of railway box culvert advancing continuouss construction beam, the multistage longeron for linking together is set up in railway both sides, longeron described in adjacent two sections is bolted using high-strength bolt etc. is strong, form one section longer of longeron system, described longeron system is supported on ground by the fixed caisson buttress at two ends and middle multigroup interim caisson buttress, setting up between described longeron system has crossbeam, described longeron system lifts described crossbeam by bracket and connecting plate, described crossbeam is lifted by rail fastening and fixes railway track；Temporary rest pier is provided with the top of the box culvert sections of jacking.This utility model is a kind of few critical process, process is simple, the reasonable in design, constructing device of the input railway box culvert advancing continuouss construction beam that construction cost is low and efficiency of construction is high.
Description
Technical field
This utility model is related to a kind of constructing device, more particularly to a kind of railway box culvert advancing continuouss construction beam
Constructing device.
Background technology
With the increasingly increase of automobile, urban transportation faces the increasing pressure, and existing railway line often becomes city
The bottleneck of traffic, on the one hand original railway bridges and culverts road width is narrower, cannot meet current traffic trip requirement, the opposing party
Face, the position of original bridges and culverts, quantity cannot be matched with the arterial street in later stage, in this case, emerge more next
More highways and the Reconstruction Project of urban road undercrossing tunnel, wherein two-way six-lane add the city road planning of footpath
More universal, when railway bed section is intersected with railway, the form of four hole frame bridges is more universal.
The construction method of traditional system of simple supporting D type construction beams, which is described below：
1st, method summary
The built on stilts method for strengthening of D types construction beam is China's built on stilts reinforced construction method of the most widely used railway at present, often
Reinforce for the railway in undercrossing tunnel jacking box culvert construct is built on stilts, existing railway line maked somebody a mere figurehead by beam in length and breadth, in order to
Box culvert advancing operation is carried out under the conditions of not interrupting railways train operation.Existing conventional have tetra- kinds of spans of D12, D16, D20, D24, in mesh
During front use, using above-mentioned four kinds of spans or the simply supported beam form of its combination, advantage is：Clearly, structure is simple for stress
Single, safety and stability, beam connection is easy to be reliable in length and breadth.But there is also problems with：Span combination selection is few and dumb, only
Above-mentioned four kinds of sizings span；Referring to Fig. 1, during multiple box culvert one by one jacking construction, after completing to make somebody a mere figurehead for the first time, jacking
First hole box culvert, then needs to backfill its both sides and top, removes D types just roof beam structure sky system, recovers and conserve railway
Circuit reaches standard, then changes longeron position and maked somebody a mere figurehead again, can carry out next hole box culvert jacking construction, apply during
Just beam needs multiple position change, repeatedly enters row line and recover and there is same position to repeat to excavate, backfill operation, journey work
Sequence is numerous and diverse, and discontinuous running is long, needs more block point and longer time of going slowly, railway operation is affected larger.Except prefabricated
All working beyond excavation of foundation pit, box culvert are prefabricated carries out operation under the conditions of railway is gone slowly, railway speed limit 45km/h, wherein
Longeron crosses rail, built on stilts conversion and just beam is removed and need to carry out block construction to railway.In the work progress of porous framework bridge, D types
Construction beam construction method has not been well positioned to meet construction requirement.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of few critical process, process is simple, reasonable in design, throwing
Enter the railway box culvert advancing continuouss construction beam that construction cost is low and efficiency of construction is high.
In order to solve above-mentioned technical problem, the construction of the railway box culvert advancing continuouss construction beam that this utility model is provided
Device, sets up the multistage longeron for linking together in railway both sides, and the longeron described in adjacent two sections is strong using high-strength bolt etc.
Bolt, forms one section longer of longeron system, and described longeron system passes through the fixed caisson buttress at two ends and centre is multigroup
Interim caisson buttress is supported on ground, and setting up between described longeron system has crossbeam, described longeron system to pass through
Bracket and connecting plate lift described crossbeam, and described crossbeam is lifted by rail fastening and fixes railway track；In jacking
Temporary rest pier is provided with the top of box culvert sections.
The longeron system two ends set up have secondary across.
The section of described longeron is box-shaped.
Full-strength joint is provided with every section of longeron two ends, upper and lower cover plates, web are all disposed with bolt hole group in joint, with double
Side splice plate is attached, and is closed using high-strength bolt bolt, and upper and lower cover plates is spelling seam using variable cross-section transition, in longeron plane
For dumb-bell shape.
Using the constructing device of the railway box culvert advancing continuouss construction beam of above-mentioned technical proposal, continuous construction beam body
System is divided into longeron, crossbeam, and crossbeam is lifted by longeron by bracket, joint cover, and railway track is lifted by crossbeam by rail fastening
And fixed, longeron section form carries out section reinforcement using box section, and longeron is assembled using more piece longeron, is readily transported
And install, junction is using the strong longeron system for bolting, forming a section longer such as high-strength bolt；In longer longeron system
In, in addition to end need to arrange fixed pivot, middle part can arrange fulcrum at an arbitrary position, formed N across continuous beam system, only need to protect
Card maximum across span less than the longeron section form under allow span, and in use can as needed,
Need to carry out changing position of the fulcrum by simple fulcrum is changed；In actual use, it is only necessary to ensure continuous just girder span
Bridge width more to be onstructed (i.e. end is located on the outside of bridge), and ensure the box culvert of maximum span the just beam for selecting maximum across
In degree allowed band, you can in the case of not moving built on stilts system after realizing disposable making somebody a mere figurehead, converted by fulcrum all
The jacking of box culvert.Continuouss using the constructing device of the railway box culvert advancing continuouss construction beam of offer of the present utility model
The construction method of construction beam and the contrast of D type construction beam construction methods, it is known that the porous box beam jacking in undercrossing tunnel is applied
In work industry, continuouss construction beam construction method is likewise supplied with the safe and reliable advantage of D type construction beams, and critical process
Less, it is to avoid repeatedly digging up and filling in repeat construct, the jacking of next hole box culvert need not wait hole box culvert both sides and top
Portion backfill Fang Da meets driving and requires, it is not necessary to which application block construction carries out built on stilts conversion, can reduce block main points number of times and
Number, reduces railway speed limit and goes slowly the time, the reduction of erection time, reduces construction cost, improves efficiency of construction.
But it is at the same time, because the longeron of continuouss construction beam forms longer continuous beam by joint, bent in minor radius
Also do not apply under the conditions of line.
In sum, this utility model be a kind of few critical process, process is simple, reasonable in design, input construction cost low
And the constructing device of the high railway box culvert advancing continuouss construction beam of efficiency of construction, in railway straight line and sweeping curve condition
Under, in jacking (or cast-in-place) work progress of porous (holes and more than) box culvert, possess obviously advantage.
Description of the drawings
Fig. 1 is traditional system of simple supporting D types just beam construction process figure.
Fig. 2 is construction process figure of the present utility model.
Fig. 3 is the signal reinforced by existing railway line of the construction method of continuouss construction beam of the present utility model
Figure.
Fig. 4 is the signal of first group of box culvert sections of jacking of the construction method of continuouss construction beam of the present utility model
Figure.
Fig. 5 is the top view of Fig. 4.
Fig. 6 is the signal after first group of box culvert sections of jacking of the construction method of continuouss construction beam of the present utility model
Figure.
Fig. 7 be the construction method of continuouss construction beam of the present utility model second group of jacking after schematic diagram.
Fig. 8 is the schematic diagram of high-strength bolt of the present utility model.
Fig. 9 is the top view of Fig. 8.
Figure 10 is I-I schematic cross-section of Fig. 8.
Figure 11 is the continuouss construction beam longeron floor map of the present invention.
Figure 12 is I-I schematic cross-section of Figure 11.
Specific embodiment
Below in conjunction with the accompanying drawings and and specific case the utility model is described in further detail.
Referring to Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12, a kind of railway box culvert advancing is continuous
The constructing device of type construction beam, sets up the multistage longeron 1 for linking together in railway both sides, and adjacent two sections of longerons 1 are using high
7 grade of strength bolt group is bolted by force, forms one section longer of longeron system 2, fixed caisson buttress 4 of the longeron system 2 by two ends
It is supported on ground with the multigroup interim caisson buttress 5 in centre, setting up between longeron system 2 has crossbeam 3, and longeron system 2 is led to
Cross bracket and connecting plate lifts crossbeam 3, crossbeam 3 is lifted by rail fastening and fixes railway track 6；Box culvert sections in jacking
Top be provided with temporary rest pier 8.
Further, 2 two ends of longeron system set up has pair across 13.
Preferably, the section of longeron 1 is box-shaped.
Further, full-strength joint is provided with 1 two ends of every section of longeron, in joint, upper and lower cover plates, web are all disposed with spiral shell
Keyhole group, is attached with bilateral splice plate, is closed using high-strength bolt bolt, and upper and lower cover plates is spelling seam using variable cross-section mistake
Cross, be dumb-bell shape in longeron plane.
Referring to Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11 and Figure 12, this utility model is provided
The construction method of continuouss construction beam, comprises the following steps：
Step one, the continuous construction beam basis of build, excavate prefabricated pit；Box culvert is prefabricated：Prefabricated box culvert in the prefabricated pit, institute
Box culvert is stated for separate type box culvert, present case is 4 box culvert sections, and number consecutively is No. 1 box culvert sections ... ..4 box culvert sections,
Net span is 10+11.5+11.5+7 rice, and the span of the box culvert sections is all in continuouss construction beam maximum span permission
In the range of；
Step 2, box culvert advancing back are constructed with rear back beam；
Step 3, built on stilts existing railway line are simultaneously reinforced：Existing railway tie distance is adjusted to 670mm, per two
A crossbeam is inserted between sleeper, then sets up the 3 sections of 16.4 meters of longerons for linking together in railway both sides, form one section 49.2 meters long
Longeron system, the longeron system is supported in by the fixed caisson buttress at two ends and middle multigroup interim caisson buttress
On ground, crossbeam is lifted by longeron by bracket and connecting plate, and railway track is lifted by rail fastening and fixed by crossbeam, phase
Adjacent two sections of longerons are bolted using high-strength bolt etc. is strong, and every section of longeron section is box-shaped；
Step 4, jacking section subsoil are excavated, and subsoil is directly used when meeting design bearing requirements, is unsatisfactory for setting
Meter bearing requirements, are processed to subsoil until meeting design bearing requirements；
Step 5, box culvert advancing：Jacking is carried out to prefabricated box culvert using jacking device, the top of No. 1, No. 3 box culvert is first carried out
Enter, then temporary rest pier is set by 2# box culverts side and 3# box culverts both sides in 1# box culverts, and remove and set up facing beside temporary rest pier
When caisson buttress, then carry out the jacking of No. 2, No. 4 box culvert sections, that is, complete the jacking of whole box culverts；
Remove just beam and case at the top of step 6, backfill separate type box culvert and two ends goaf, construction box culvert gateway aileron
Contain top temporary rest pier, conserve rail track, recover the operation of circuit constant speed.
In above-mentioned steps five：The box culvert sections of the alternate jacking of multigroup described box culvert sections, i.e. first jacking odd number simultaneously,
The box culvert sections of simultaneously jacking even number again, or the first box culvert sections of jacking even number simultaneously, then the case of jacking odd number simultaneously
Contain sections.
Prefabricated separate type box culvert is divided into 4 box culvert sections, and 4 box culvert sections are respectively 9, No. 2 casees of No. 1 box culvert sections from left to right
Contain 10, No. 3 box culvert sections 11 of sections and No. 4 box culvert sections 12,4 prefabricated box culvert sections are located along the same line and each other two-by-two
Adjacent.
Jacking is carried out to No. 1 box culvert sections 9 and No. 3 box culvert sections 11 respectively first, after jacking to design attitude, in No. 1 case
Contain
No. 2 box culvert sections 10 and No. 4 12 jackings of box culvert sections are then completed jacking to design attitude by interim caisson buttress 5
Journey.
When mounted, pairing is assembled, and high-strength bolt is applied stubborn using special spanner for every section of longeron.
The continuouss construction beam two ends have also set up secondary across 13.
Every section of longeron joint, cover plate, web bilateral splice plate are attached, and are closed using high-strength bolt bolt, up and down
Cover plate is excessive using variable cross-section in spelling seam.
This utility model is a kind of few critical process, process is simple, construction cost is low and efficiency of construction for reasonable in design, input
The construction method of high continuouss construction beam, which possesses following characteristic：
(1) continuous construction beam system is divided into longeron 1, crossbeam 3, and crossbeam 3 is lifted by longeron 1 by bracket, joint cover, horizontal
Railway track 6 is lifted and fixed by beam 3 by rail fastening, and effect base reason is consistent with D type construction beams；
(2) section form of longeron 1 adopts box section (consistent with D type construction beam shapes), in making for corresponding span
Using carries out section reinforcement relative to D types construction beam：Upper and lower cover plate thickness increases；Web height increases；In box section
Inner reinforced plate is encrypted.Crossbeam 3 and related fittings using the standard component of D types just beam, possess versatility.For transporting and installing just
Profit, 1 assembled junction of more piece longeron are bolted using 7 grade of high-strength bolt by force, form one section longer of longeron system 2；
(3) in longer longeron system 2, in addition to end need to arrange fixed caisson buttress 4 and make fixed pivot, middle part can
Interim caisson buttress 5 is set at an arbitrary position and makees fulcrum, formed N across continuous beam system, need to only ensure maximum across span
Less than the span of allowing under the longeron section form, and only simply need to can be faced as needed in use
When caisson buttress 5 fulcrum conversion can change position of the fulcrum；In actual use, it is only necessary to ensure continuous just beam
Across bridge width (i.e. end is located on the outside of bridge) to be onstructed, and ensure that the box culvert of maximum span is maximum in the just beam for selecting
In span allowed band, you can in the case of not moving built on stilts system after realizing disposable making somebody a mere figurehead, convert institute by fulcrum
There is the jacking of box culvert.
Note：All working in addition to prefabricated excavation of foundation pit, box culvert are prefabricated carries out operation, ferrum under the conditions of railway is gone slowly
Road speed limit 45km/h, wherein longeron cross rail and just beam is removed and need to carry out block construction to railway.
Specifically, by taking the continuous construction beam of 16 types of 16.4 meters of maximum span as an example.
(1) continuouss construction beam section
In the technical program by taking the continuouss construction beam based on D16 low clearance construction beams as an example, possesses following spy
Levy：
1., relative D16 low clearance construction beams, upper and lower cover plate thickness increase to 40mm by 36mm, are strengthened；
2., relative D16 low clearance construction beams, depth of section increase to 1080mm by 900mm, are strengthened；
3., relative D16 low clearance construction beams, eliminate the setting of antiarch；
4., relative D16 low clearance construction beams, inner reinforced plate are encrypted, are encrypted to 335mm by 670mm spacing；
The accessories such as crossbeam 5., just in beam body system, bracket, connecting plate are consistent with standard D flip construction beam.
(2) technical scheme of joint
By transporting, execution conditions are limited, and just beam length is unsuitable long for single-unit, and joint need to be adopted to carry out waiting strong ties to realize
Longeron is continuous.In longeron joint, cover plate, web bilateral splice plate are attached, and are closed using high-strength bolt bolt, upper and lower cover plates
520mm is transitioned into by 420mm seam section is spelled, to increase bonding strength at splicing seams, longeron when mounted, is spelled with pairing
Dress, high-strength bolt is applied stubborn using special spanner.
The construction method of continuouss construction beam and its advantage of device：
Relative to the D type construction beam construction methods of traditional system of simple supporting, the construction method of continuouss construction beam with
Under several aspects there is obvious advantage：
Note：1st, contrast above as a example by wearing single-track railway under 4 hole box culverts；
2nd, railway transportation financial loss basis is《Wide ferrum is done and sends out [2016] No. 54》Text；
3rd, only cross rail operation from longeron on the above-mentioned reduced time to start at, to longeron remove, other work progress when
Between essentially identical with workload, difference is less, and here is not accounted for；
4th, other are because of duration length expense different item, it is considered to take relatively small, and here is not contrasted, such as jack, top
The relevant items such as ferrum, water-pumping/draining.
By the contrast of the construction method of railway box culvert advancing continuouss construction beam and D type construction beam construction methods,
Understand in the porous box beam jacking construction operation of undercrossing tunnel, continuouss construction beam construction method is likewise supplied with the construction of D types
Just the reliable advantage of safety beam, and critical process is less, it is to avoid repeatedly digging up and filling in repeat construct, next hole box culvert
Jacking need not wait hole box culvert both sides and top backfill Fang Da to meet driving and require, it is not necessary to which application block construction carries out frame
Idle running is changed, and can be reduced number of times and the number of block main points, be reduced railway speed limit and go slowly the time, the reduction of erection time, reduce construction cost,
Improve efficiency of construction.
But it is at the same time, because the longeron of continuouss construction beam forms longer continuous beam by joint, bent in minor radius
Also do not apply under the conditions of line.
In sum, the construction method of railway box culvert advancing continuouss construction beam is in railway straight line and sweeping curve bar
Under part, in jacking (or cast-in-place) work progress of porous (holes and more than) box culvert, possesses obviously advantage.
Claims (4)
1. a kind of constructing device of railway box culvert advancing continuouss construction beam, it is characterised in that：Connection is set up in railway both sides
Multistage longeron together, the longeron described in adjacent two sections are bolted using high-strength bolt etc. is strong, form one section of longer longeron
System, described longeron system are supported in ground by the fixed caisson buttress at two ends and middle multigroup interim caisson buttress
On, setting up between described longeron system has crossbeam, and described longeron system lifts described horizontal stroke by bracket and connecting plate
Beam, described crossbeam are lifted by rail fastening and fix railway track；It is provided with the top of the box culvert sections of jacking interim
Buttress.
2. the constructing device of railway box culvert advancing continuouss construction beam according to claim 1, it is characterised in that：Described
Longeron system two ends set up have secondary across.
3. the constructing device of railway box culvert advancing continuouss construction beam according to claim 1 and 2, it is characterised in that：
The section of described longeron is box-shaped.
4. the constructing device of railway box culvert advancing continuouss construction beam according to claim 1 and 2, it is characterised in that：
Full-strength joint is provided with every section of longeron two ends, upper and lower cover plates, web are all disposed with bolt hole group in joint, uses bilateral splice plate
It is attached, is closed using high-strength bolt bolt, upper and lower cover plates is spelling seam using variable cross-section transition, is dumbbell in longeron plane
Shape.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620831333.3U CN206015538U (en) | 2016-08-03 | 2016-08-03 | A kind of constructing device of railway box culvert advancing continuouss construction beam |
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| CN201620831333.3U CN206015538U (en) | 2016-08-03 | 2016-08-03 | A kind of constructing device of railway box culvert advancing continuouss construction beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012878A (en) * | 2016-08-03 | 2016-10-12 | 长沙楚泰建筑劳务有限公司 | Construction method for continuous type construction auxiliary girder in jacking of railway box culvert and device for implementing construction method |
| CN109653096A (en) * | 2018-12-22 | 2019-04-19 | 中铁十八局集团有限公司 | The construction method of existing line frame core-tube system is worn under a kind of mountain area |
-
2016
- 2016-08-03 CN CN201620831333.3U patent/CN206015538U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106012878A (en) * | 2016-08-03 | 2016-10-12 | 长沙楚泰建筑劳务有限公司 | Construction method for continuous type construction auxiliary girder in jacking of railway box culvert and device for implementing construction method |
| CN109653096A (en) * | 2018-12-22 | 2019-04-19 | 中铁十八局集团有限公司 | The construction method of existing line frame core-tube system is worn under a kind of mountain area |
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