CN103669114A - Ballast bed base prefabricated slab and application thereof - Google Patents
Ballast bed base prefabricated slab and application thereof Download PDFInfo
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- CN103669114A CN103669114A CN201210327998.7A CN201210327998A CN103669114A CN 103669114 A CN103669114 A CN 103669114A CN 201210327998 A CN201210327998 A CN 201210327998A CN 103669114 A CN103669114 A CN 103669114A
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Abstract
The invention relates to a ballast bed base prefabricated slab and an application thereof. The ballast bed base prefabricated slab comprises a slab body formed by prefabricating reinforced concrete materials. The size of the slab body is smaller than the design size of a base. At least three height and dip angle adjusting devices are arranged on the slab body. The ballast bed base prefabricated slab is simple in structure, capable of being processed and manufactured in the place outside a tunnel or a factory, and the processing precision and quality are more easily ensured. The ballast bed base constructed by applying the ballast bed base prefabricated slab is small in error and high in precision. The construction method for the ballast bed base constructed by applying the ballast bed base prefabricated slab is easy, convenient and rapid to operate, the flatness, cross fall and other key indexes of the base can be effectively controlled with the help of the ballast bed base prefabricated slab, the site construction difficulty is greatly reduced, the construction efficiency can be greatly improved, waste caused by secondary treating or reworking is reduced, the ballast bed base prefabricated slab is excellent in economical performance, practicability and applicability and can be widely used for base construction inside the tunnel with linear segments and curving segments, and market application prospects are quite wide.
Description
Technical field
The invention belongs to field of track traffic, especially relate to a kind of construction method and corresponding precast plate that utilizes new precast panel technology to construct railway roadbed substrate.
Background technology
Vibration and noise are influence surface that people are generally acknowledged the most a kind of public hazards, are also the difficult problems urgently to be resolved hurrily that track traffic in recent years development faces.In the noise reduction technology of existing track traffic, practical application is the most successfully floating plate road bed technique, and its vibration isolation efficiency is high, and stable work in work has become common recognition in the industry.
Traditional railway roadbed and base are one.Floating plate railway roadbed is divided into solid concrete roabed substrate and floating plate two parts, floating plate adopts flexible member to be bearing in substrate, therefore floating plate system is had relatively high expectations near the substrate planeness supporting elements such as steel spring vibration isolator, resilient sleeper-bearing, need to reach 2mm/m
2, vertical error is controlled at 0～-5mm simultaneously.At present, substrate all adopts the construction method of cast-in-site, be subject to the restriction of job site ambient conditions and complicated construction technique and constructor's technical ability required to the impact of high odjective cause, often there is the larger error in part in substrate surface, can not meet the designing requirement of planeness and elevation, the trimming of doing over again often occurs, and has greatly restricted the speed of application in floating plate location.
In addition, the design of tradition floating plate railway roadbed adopts the scheme of horizontal substrate, inclination floating plate at curved section, this scheme is found some shortcomings in application process, be mainly manifested in: every floating plate arrangement of reinforcement is different, the model that damped products relates to is many, it is all very inconvenient to produce and install, and the design and construction cycle is long, efficiency is low, high in cost of production.For overcoming these deficiencies, superelevation is set in recent years in substrate has become the standing procedure of floating plate railway roadbed design, but, this technical scheme has run into again new problem in practical operation, show: in easement curve section, superelevation value (horizontal along track) is linear gradient, and circuit itself also has (longitudinal along track) gradient, making easement curve segment base basal surface is a curved surface in theory, because cast in situs construction substrate is more extensive, while constructing oblique substrate, concrete also easily flows to lower, these unfavorable factors cause the substrate that curved section site operation completes to be often difficult to meet design requirement, elevation height error exceeds the critical field of 0～-5mm, cross fall is undesirable, error is sometimes up to ± 30mm.
According to existing form of construction work, the substrate of cast-in-site often occurs that the indexs such as planeness, elevation, curved section cross fall can not meet design requirement, therefore the after-treatment such as often need to polish or padded after construction again, not only labor intensive material resources and restriction construction speed, when serious, even need to cut to reform, cause very large economic waste.In sum, market is in the urgent need to a kind of easy operation and higher substrate construction method and the Related product of construction precision.
Summary of the invention
One of object of the present invention is to overcome above-mentioned defect, provides a kind of application operating simple, more easily guarantees the railway roadbed substrate precast plate of construction precision.
Railway roadbed substrate precast plate of the present invention is achieved in that and comprises that the size of plate body is less than the design size of substrate by the prefabricated plate body forming of Reinforced Concrete Materials, and plate body is provided with at least three height and inclination-angle regulating device.
Described height and inclination-angle regulating device comprise the anchoring piece with plate body integrated setting, and anchoring piece is provided with screwed hole and the screw rod cooperatively interacting.When arranging, according to 3 principles of determining a plane, height and inclination-angle regulating device at least need to arrange three, in application, can be different according to the actual conditions of plate body length and weight, determine adopt height and the concrete quantity of inclination-angle regulating device, for example four, five are even more.
Concrete perfusion or grouting material are more convenient in order to apply, and on the plate body of railway roadbed substrate precast plate of the present invention, can also be provided with grouting channel.In addition,, in order to be combined into one better with concrete or the grouting material of later stage perfusion, the plate body lower surface of railway roadbed substrate precast plate of the present invention can also be carried out dabbing processing or is provided with concaveconvex structure.In addition, the consideration of draining for convenience, can also arrange gutter at the middle part of plate body upper surface.In current floating ballast bed structure, the design strength overwhelming majority of substrate carries out according to the concrete strength criterion of C40, therefore, generally, railway roadbed substrate precast plate of the present invention requires concrete intensity in plate body to be not less than the concrete prescribed strength of C40.The consideration of carrying for convenience and transporting, can also arrange at least one loss of weight through hole on plate body.
The plate body structure of railway roadbed substrate precast plate of the present invention is various informative, except conventional platy structure, plate body can also adopt other form of structure, for example, plate body comprises longitudinal spandrel girder and connector, longitudinally spandrel girder arranges two altogether, between two longitudinal spandrel girders, at least one connector is set.In addition,, when having draining demand, the upper surface at connector middle part can also be fixedly installed the loss template corresponding with gutter shape.In addition, the form of structure of connector also can be varied, it adopts Reinforced Concrete Materials makes except the same with longitudinal spandrel girder, connector also can consist of steel bar framework, or shape, directly consist of, described shape comprises angle steel, channel-section steel, i iron, reinforcing bar, steel pipe etc.
In order to meet the instructions for use of substrate, the flatness error of railway roadbed substrate precast plate plate body upper surface of the present invention is less than 2mm/m
2.It should be noted that, the function of described longitudinal spandrel girder in ballast bed structure is mainly used for supporting isolation mounting, therefore in general, in the plate body of the railway roadbed substrate precast plate of the present invention that comprises longitudinal spandrel girder structure, the intensity of the concrete material at least longitudinally using in spandrel girder is not less than the concrete prescribed strength of C40.Be noted that in addition described in the present invention longitudinally, corresponding with the bearing of trend of rail; Described laterally, laterally corresponding with rail.
Second object of the present invention is to provide a kind of railway roadbed substrate that described railway roadbed substrate precast plate is constructed of applying, the end face that it is characterized in that railway roadbed substrate precast plate plate body overlaps with the design work face of substrate, closely knit fill concrete or grouting material in space between plate body and ballast bed structure base surface, the upper surface of concrete or grouting material filling part is not higher than plate body end face.
For guaranteeing the bulk strength of underlying structure, in general, the concrete adopting or the intensity of grouting material are not less than the concrete prescribed strength of C30.
The 3rd object of the present invention, is to provide a kind of construction method that described railway roadbed substrate precast plate is constructed railway roadbed substrate of applying, and it is characterized in that comprising the steps:
(1) clean out the foreign material on ballast bed structure base surface, according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and is contrasted line and be placed in the relevant position on ballast bed structure base surface;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device, adjust height and the gradient of railway roadbed substrate precast plate plate body, the end face of plate body is overlapped with the design work face of this place's substrate;
(4), with reference to plate body end face, to concrete perfusion or grouting material in the space between plate body and ballast bed structure base surface, until fill closely knitly completely, make the upper surface of new perfusion part not higher than plate body upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other railway roadbed substrate precast plate;
(6) concrete of new perfusion or grouting material are partly carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate.
The present invention's application railway roadbed substrate precast plate is constructed in the construction method of railway roadbed substrate, described ballast bed structure base surface refers to the support surface of substrate in ballast bed structure, its concrete form in different engineerings is difference to some extent, for example, in construction of tunnel, tunnel surface is the support surface of substrate, and therefore the tunnel surface corresponding with substrate is described ballast bed structure base surface; In viaduct engineering, the support of substrate surface is beam in bridge superstructure surface, so the beam surface of bridge superstructure corresponding to substrate is described ballast bed structure base surface; In ground surface works, the support surface of substrate is the road bed that substrate below directly contacts with substrate, comprise substrate interior whole ballast bed structure be all arranged on road bed above, this road bed is described ballast bed structure base surface, based on above-mentioned explanation, in Other Engineering, be also same principle, exemplify no longer one by one.In addition, according to the actual needs of engineering, in many application places, before the foreign material on ballast bed structure base surface being cleared up by step (1), first need that ballast bed structure base surface is made to surperficial dabbing and process.For example, in general, in tunnel, engineering, except the tunnel of shield structure structure, all needs that ballast bed structure base surface is made to surperficial dabbing and processes, and therefore can, according to actual demands of engineering, increase the link that surperficial dabbing is processed in construction method.
It should be noted that, in practice of construction process, construction method also can change to some extent.For example, when adopting the shorter railway roadbed substrate precast plate of the present invention of length to carry out substrate construction, because monolithic plate body size is less, carry out one by one grouting operation number of repetition many, efficiency is low, therefore can in step (2), at least two adjacent railway roadbed substrate precast plates be set as one group, then all railway roadbed substrate precast plates in same group are carried out respectively to height and gradient adjustment, again to concrete perfusion or grouting material in the space between each piece railway roadbed substrate precast plate in same group and ballast bed structure base surface, until fill closely knit completely, according to aforesaid operations method, having divided into groups, each organizes the construction and installation of railway roadbed substrate precast plate, finally new perfusion part is carried out to maintenance, until it reaches design strength, obtain final complete substrate.Said method is combined into a plurality of larger unit by polylith railway roadbed substrate precast plate and carries out respectively constructing operation again, repeats operation few, and efficiency of construction is higher, in addition, adopts this construction method to be also conducive to improve the globality of substrate.Certainly, according to above-mentioned technological thought, as a kind of special form of construction work, also can first all railway roadbed substrate precast plates all be set to rear carry out respectively height and gradient adjustment, and then unified concrete perfusion or grouting material.Be noted that in addition, the measurement mechanism of mentioning in step (3), comprise scale, transit, total powerstation, level gauge etc., because the use of these survey tools in field of track traffic is very general, thus in the present invention to specifically selecting which kind of measurement mechanism and use procedure thereof not to be described in detail.In step (4) when concrete perfusion or grouting material, concrete or grouting material that employing can Self-leveling, or adopt the method for filling of slip casing by pressure.
In addition,, in work progress, in order to prevent from adjusting the plate body displacement causing in railway roadbed substrate precast plate plate body height of the present invention and gradient process, if desired, can, after the height of plate body is adjusted with the gradient, again to the position of plate body, carry out accurate adjustment.In addition, while adopting the method concrete perfusion of slip casing by pressure or grouting material in the step (4), for fear of railway roadbed substrate precast plate plate body of the present invention in the process of concrete perfusion or grouting material, be forced to be shifted, such as occurred level, move or upwards lift etc. part, during pouring construction, counterweight can be set on plate body.Be noted that especially for fear of poured into concrete or grouting material and in solidification process, occur the volume contraction adverse effect that substrate brings to railway roadbed, when construction, preferred, adopt shrinkage-free concrete or grouting material.
Railway roadbed substrate precast plate of the present invention, simple in structure, can place or factory process outside tunnel make, machining accuracy and quality more easily guarantee.The railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, error is little, and precision is high.The present invention's application railway roadbed substrate precast plate is constructed the construction method of railway roadbed substrate, simple and efficient to handle, the key indexs such as the planeness of substrate and cross fall can control effectively by railway roadbed substrate precast plate, the difficulty of site operation reduces greatly, can greatly improve efficiency of construction, the waste that reduces after-treatment or do over again and cause, its economy, practicality and applicability are all good, can be widely used in substrate construction in the tunnel of straightway, curved section, easement curve section, market application foreground is very wide.
Accompanying drawing explanation
Fig. 1 is one of structural representation of railway roadbed substrate precast plate of the present invention.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Fig. 1.
Fig. 4 is the top view of Fig. 3.
Fig. 5 is the structural representation of the precast plate of railway roadbed substrate shown in the application drawing 1 railway roadbed substrate of the present invention of constructing.
Fig. 6 is the structural representation of concrete diaphragm.
Fig. 7 is the top view of Fig. 6.
Fig. 8 be railway roadbed substrate precast plate of the present invention structural representation two.
Fig. 9 is that the B-B of Fig. 8 is to sectional view.
Figure 10 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Fig. 8.
Figure 11 is the top view of Figure 10.
Figure 12 is the structural representation of the precast plate of railway roadbed substrate shown in the application drawing 8 railway roadbed substrate of the present invention of constructing.
Figure 13 be railway roadbed substrate precast plate of the present invention structural representation three.
Figure 14 is that the C-C of Figure 13 is to sectional view.
Figure 15 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 13.
Figure 16 be the precast plate of railway roadbed substrate shown in Figure 13 application schematic diagram two.
Figure 17 is the top view of Figure 15.
Figure 18 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 13, railway roadbed substrate precast plate is constructed.
Figure 19 be railway roadbed substrate precast plate of the present invention structural representation four.
Figure 20 be railway roadbed substrate precast plate of the present invention structural representation five.
Figure 21 be the precast plate of railway roadbed substrate shown in Figure 13 application schematic diagram four.
Figure 22 be railway roadbed substrate precast plate of the present invention structural representation six.
Figure 23 is that the D-D of Figure 22 is to sectional view.
Figure 24 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 22.
Figure 25 is the top view of Figure 24.
Figure 26 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 22, railway roadbed substrate precast plate is constructed.
Figure 27 be railway roadbed substrate precast plate of the present invention structural representation seven.
Figure 28 is that the E-E of Figure 27 is to sectional view.
Figure 29 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 28.
Figure 30 is the top view of Figure 29.
Figure 31 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 28, railway roadbed substrate precast plate is constructed.
Figure 32 be railway roadbed substrate precast plate of the present invention structural representation eight.
Figure 33 is that the F-F of Figure 32 is to sectional view.
Figure 34 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 32.
Figure 35 is the top view of Figure 34.
Figure 36 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 32, railway roadbed substrate precast plate is constructed.
Figure 37 be railway roadbed substrate precast plate of the present invention structural representation nine.
Figure 38 be railway roadbed substrate precast plate of the present invention structural representation ten.
Figure 39 be railway roadbed substrate precast plate of the present invention structural representation 11.
Figure 40 be railway roadbed substrate precast plate of the present invention structural representation 12.
Figure 41 is that the H-H of Figure 40 is to sectional view.
Figure 42 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 40.
Figure 43 is the top view of Figure 42.
Figure 44 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 40, railway roadbed substrate precast plate is constructed.
Figure 45 be railway roadbed substrate precast plate of the present invention structural representation 13.
Figure 46 be railway roadbed substrate precast plate of the present invention structural representation 14.
Figure 47 is that the J-J of Figure 46 is to sectional view.
Figure 48 is one of application schematic diagram of the precast plate of railway roadbed substrate shown in Figure 46.
Figure 49 is for applying the structural representation of the railway roadbed substrate of the present invention that shown in Figure 46, railway roadbed substrate precast plate is constructed.
Figure 50 be railway roadbed substrate precast plate of the present invention structural representation 15.
The specific embodiment
Embodiment mono-
Railway roadbed substrate precast plate of the present invention as depicted in figs. 1 and 2, comprise by the prefabricated plate body forming 1 of Reinforced Concrete Materials, the size of plate body 1 is less than the actual design size of substrate in engineering, the middle part of plate body 1 upper surface is provided with gutter 2, on plate body 1, along self longitudinal centre line both sides, be also respectively equipped with height and inclination-angle regulating device 3, wherein, plate body 1 along self longitudinally length be 12.5m, height and inclination-angle regulating device 3 arrange altogether 10, two be one group longitudinally uniform along plate body.Described height and inclination-angle regulating device 3 comprise the anchoring piece 5 of steel, are also provided with the screwed hole and the screw rod 4 that cooperatively interact on anchoring piece 5, and screw rod 4 is also steel, and anchoring piece 5 is prefabricated into one with plate body 1.Adjust the relative position of screw rod 4 and screwed hole in each height and inclination-angle regulating device 3, just can realize height and the gradient of adjustable plate 1.
When applying railway roadbed substrate precast plate of the present invention constructing floating ballast bed substrate in tunnel, the straightway in the tunnel of shield structure structure of take is example, specifically can operate in accordance with the following steps:
(1) clean out the foreign material on ballast bed structure base surface (being tunnel surface), according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, at this, corresponding tunnel surface is described ballast bed structure base surface, so with tunnel surface, replace ballast bed structure base surface to explain in construction method below, explanation hereby;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped, as shown in Figure 3 with the design work face of this place's substrate;
(4) as shown in Figure 4, at the longitudinal two ends of plate body 1, the baffle plate 7 that pitch plank is made is set respectively, with reference to plate body 1 end face, by the space between plate body 1 side and tunnel wall 6, in the space between plate body 1 and tunnel wall 6, pour into Self-leveling grouting material 40, until fill closely knit completely, make the upper surface of new perfusion part not higher than plate body upper surface, clip the part that screw rod 4 exceeds plate body 1 upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other railway roadbed substrate precast plates;
(6) grouting material 40 parts of new perfusion are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its structure is as shown in Figure 5.
It is to be noted, after final substrate completes, the baffle plate 7 that the pitch plank arranging between railway roadbed substrate precast plate of the present invention is made needn't be removed, utilize the occupied space of baffle plate 7, as the shrinkage joint in substrate, use, in light of this situation, the actual (real) thickness of the baffle plate that adopts 7 can be chosen according to the design width at shrinkage joint.In addition, grouting material 40 is specially high-strength mortar that can Self-leveling, certainly, can also adopt high-strength concrete etc. other can Self-leveling pouring material, also can realize same function.In step (6), mention the concrete of new perfusion or grouting material are partly carried out to maintenance and protection; wherein the implication of protection refers to and should take measures to prevent the load-bearing too early of new perfusion part; in order to avoid there is the defects such as breakage, slight crack; this point is applicable to all embodiment of the present invention; at this, illustrate in the lump, no longer repeatedly describe.
Railway roadbed substrate precast plate of the present invention, simple in structure, can place, ground or prefabricated component factory process outside tunnel make, machining accuracy and quality more easily guarantee.The construction and installation of a railway roadbed substrate precast plate of the present invention of take in this example describe as example, in actual applications, can carry out even all construction and installation of railway roadbed substrate precast plate of the present invention of polylith simultaneously, therefore, speed of application is faster, this point is applicable to all embodiment of the present invention, at this, illustrates in the lump.The present invention's application railway roadbed substrate precast plate is constructed the construction method of substrate in tunnel, simple and efficient to handle, the planeness of substrate depends primarily on the planeness of railway roadbed substrate precast plate of the present invention, because railway roadbed substrate precast plate of the present invention has adopted processing technology prefabricated outside tunnel, its manufacturing process is no longer subject to limitation of construction in tunnel, machining accuracy and quality more easily guarantee, can in process, just plate body upper surface flatness error are controlled at and be less than 2mm/m
2, thereby use the workmanship of the substrate that railway roadbed substrate precast plate of the present invention constructs higher, and speed of application is also faster, can effectively shorten construction period, and economy and practicality are remarkable.In use procedure, elastic vibration isolation device in ballast bed structure is directly placed in the surface that the present invention has railway roadbed substrate precast plate, the plate body upper surface flatness error of controlling well is just equal to the flatness error of having controlled railway roadbed substrate, thereby the application railway roadbed substrate precast plate railway roadbed substrate of the present invention of constructing, its workmanship is more secure, the waste that can effectively avoid after-treatment to cause.
In to railway roadbed substrate precast plate of the present invention, the screw rod 4 of height and inclination-angle regulating device 3 carries out after standardization, also can adopt following technical scheme: in the step (4) of construction method of the present invention, no longer block screw rod 4 parts that exceed plate body end face, but the grouting material 40 changing in new perfusion reaches after primary strength, screw rod 4 is screwed out, screw rod 4 just can be realized recycling like this, and then realize and reduce material input, reduce construction cost.In practical application, coating butter or silicone oil on screw rod, prevent and grouting material or concrete binding in advance.
Be noted that in addition the consideration of hoisting transportation in tunnel for convenience and convenient construction, take into account the crane capacity of hanging device in existing tunnel, preferred, the plate body of railway roadbed substrate precast plate of the present invention along self longitudinally length be no more than 12.5m.Due to this example, take in tunnel the interval construction of straightway and describe as example, the length of the railway roadbed substrate precast plate plate body of the present invention of therefore selecting is longer, is specially 12.5m.In practical application, different according to project situation, what also plate body length can be arranged is shorter, such as plate body length, be set to 1.15m, 2m, 3.6m, 4.8m, 6m etc., and the plate body length of the railway roadbed substrate precast plate of the present invention of applying in same substrate engineering can be identical, also can be different, in engineering, can grasp flexibly.But in order to match with the rail of current 25m full-length, simultaneously for the different length kind that reduces railway roadbed substrate precast plate of the present invention is to facilitate processing, preferably, the integral multiple using 25m as the plate body length of railway roadbed substrate precast plate of the present invention, or approximate integral multiple; Certainly, can also be according to fastener spacing, because the spacing of ballast bed structure Elastic vibration isolator is arranged to the integral multiple of fastener spacing, in the majority with 2 times in existing engineering, therefore can correspondingly plate length be set in to the integral multiple of fastener spacing or approach integral multiple, can realize well object of the present invention.Have again, in floating ballast bed structure in current tunnel, the design strength overwhelming majority of substrate carries out according to the concrete strength criterion of C40, in order to guarantee that substrate intensity reaches requirement, railway roadbed substrate precast plate of the present invention requires the intensity of the concrete material that adopts in plate body to be not less than the concrete strength criterion of C40, meanwhile, the strength of materials of selected grouting material is also not less than the concrete prescribed strength of C40.
Embodiment bis-
Railway roadbed substrate precast plate of the present invention as shown in Figure 8 and Figure 9, be with the difference of embodiment mono-, plate body 1 along self longitudinally length be 4.15m, height and inclination-angle regulating device 3 arrange four altogether, wherein two are one group and are divided into two groups, every group of height and inclination-angle regulating device 3 start at the longitudinal plate end 1m place apart from plate body 1 to arrange, between two adjacent groups height and inclination-angle regulating device 3, spacing is 2m.In addition, the screw rod 4 in height and inclination-angle regulating device 3 is built in anchoring piece 5.In addition, be also provided with two grouting channel 9 in gutter 2, grouting channel 9 is arranged on the centre of two height and the inclination-angle regulating device 3 of same group.Plate body upper surface flatness error is controlled at and is less than 2mm/m
2.
When applying this routine described railway roadbed substrate precast plate of the present invention constructing floating ballast bed substrate in tunnel, the straightway engineering in the horse-shoe tunnel that the tunneling of take obtains is example, can operate in accordance with the following steps:
(1) ballast bed structure base surface (being tunnel surface) being made to surperficial dabbing processes, clean out the foreign material on ballast bed structure base surface, according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, as shown in figure 11, while putting, using three railway roadbed substrate precast plates 10,11 of the present invention and 12 as one group, the dividing plate 8 of the concrete prefabricated one-tenth of C40 is set between adjacent railway roadbed substrate precast plate in every group, every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 7 that pitch plank forms, as shown in Figure 6 and Figure 7, its undersized is in the cross section design size of substrate for the shape and structure of its median septum 8;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped, as shown in figure 10 with the design work face of this place's substrate;
(4) with reference to the end face of railway roadbed substrate precast plate, by grouting channel 9, adopt the mode of slip casing by pressure to pour into grouting material 40 in the space between plate body and tunnel surface 6, until fill closely knit completely, it is to be noted, grouting channel 9 is also filled up with grouting material 40, in order to prevent that grouting material 40 from overflowing from grouting channel 9, after perfusion when grouting material is realized initial set, the grouting material that the opening part of grouting channel 92 bottom surfaces in gutter is overflowed is floating, cavity in anchoring piece 5 and between screw rod 4 part is also filled closely knit with grouting material 40 in addition, the upper surface that should note all new perfusion parts should be higher than plate body upper surface,
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) grouting material 40 parts of new perfusion are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its structure is as shown in figure 12.
Identical with the description in embodiment mono-, after final substrate completes, the shrinkage joint of the shared segment space of baffle plate 7 arranging between railway roadbed substrate precast plate of the present invention in substrate used.
The railway roadbed substrate precast plate of the present invention that this example is described, plate body length dimension is less, and the transportation in tunnel and position adjustment are more prone to realize, in addition, screw rod 4 in height and inclination-angle regulating device 3 is built in anchoring piece 5, uses material still less, is conducive to reduce production costs.
The described the present invention's application railway roadbed substrate precast plate of this example is constructed the construction method of substrate, owing to having adopted the shorter railway roadbed substrate precast plate of length, and set up dividing plate between adjacent railway roadbed substrate precast plate, thereby the whole spatial separation that need to utilize grouting material to fill is become to a plurality of less independent perfusion spaces, and the filling that more easily realizes grouting material is closely knit.After perfusion grouting material, by grouting material, make dividing plate and railway roadbed substrate precast plate be combined into an integral body, its globality is better.In addition, it should be noted that, in order to prevent there is gap between dividing plate and railway roadbed substrate precast plate end face, when dividing plate is set, can utilize structure glue that dividing plate is bonded on plate body end face, thereby elimination gap, another benefit of this practice is, can in advance three railway roadbed substrate precast plates and dividing plate be linked to be to an integral body, its overall weight is larger, in the process of follow-up perfusion grouting material, railway roadbed substrate precast plate is difficult for being shifted, and is conducive to guarantee plan-position precision.It should be noted that, the quantity of grouting channel can be set according to actual needs, describes, in practical application during this illustration shows so that two grouting channel to be set, according to the long difference of plate and the difference of grouting method, a grouting channel also can be only set or two above grouting channel are set.
Railway roadbed substrate precast plate of the present invention and construction method thereof that this example is described, transportation and constructing operation are more convenient, during construction, from the grouting channel at plate body middle part, implement perfusion, owing to utilizing baffle for separating to go out less independent perfusion space, as long as grouting material is gushed out from plate body both sides, space between plate body and tunnel wall is filled and led up completely, more easily guarantee that grouting material filling is closely knit, handled easily and control, be conducive to further improve speed of application.
Embodiment tri-
Railway roadbed substrate precast plate of the present invention as shown in Figure 13 and Figure 14, be with the difference of embodiment mono-, on plate body 1, be also provided with a grouting channel 9, the side plate body length that is provided with grouting channel is slightly short, the face profile of whole plate body 1 is isosceles trapezoid, its length along self longitudinal centre line place is 1.15m, and 4 height and inclination-angle regulating device 3 are set on plate body 1.
When applying this routine described railway roadbed substrate precast plate of the present invention constructing floating ballast bed substrate in shield tunnel, take easement curve section as example, according to the design size of easement curve section, railway roadbed substrate precast plate outside tunnel described in prefabricated a series of examples, by controlling the complex-curved of the surface size of each piece railway roadbed substrate precast plate and then combined and spliced one-tenth easement curve section, according to splicing order, by railway roadbed substrate precast plate number consecutively, prepare to construct for substrate.It is to be noted, because substrate surface in easement curve section is a curved surface in theory, therefore the appearance and size of each piece railway roadbed substrate precast plate is all different, in this example, only take Figure 13 as example, and the railway roadbed substrate precast plate of take is wherein described the feature of this routine described railway roadbed substrate precast plate of the present invention as example.While constructing substrate, can operate in accordance with the following steps:
(1) clean out the foreign material on ballast bed structure base surface, according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, as shown in figure 16, while putting, according to number order, ten railway roadbed substrate precast plates of the present invention are put successively as one group, between adjacent railway roadbed substrate precast plate of the present invention, leave the spacing of 5cm left and right, every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 7 that pitch plank is made, it should be noted that, because map sheet is limited, in diagram, only shown railway roadbed substrate precast plate 16, 17, 50, the part railway roadbed substrate precast plates such as 18 and 19,
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped with the design work face of this place's substrate, the size of the railway roadbed substrate precast plate adopting due to this example is less, in order to prevent that in adjustment process, plate body is shifted, just with after gradient adjustment again plate body being carried out to position accurate adjustment, then counterweight 15 is set on plate body to prevent that in filling process, plate body is shifted; In addition, in the lower side of the gradient, baffle plate 14 is set and spills to prevent slip casting, during construction, can utilize counterweight 15 baffle plate 14 to be pushed down simultaneously, slip casting convenient, on baffle plate 14, corresponding grouting channel 9 is provided with grout hole 13, specifically as shown in Figure 15 and Figure 17;
(4) with reference to the end face of railway roadbed substrate precast plate, by grout hole 13, adopt the mode of slip casing by pressure to pour into grouting material 40 in the space between plate body and tunnel surface 6, until fill closely knit completely, it is to be noted, grouting channel 9 is also filled up with grouting material 40, clip screw rod 4 and expose the part on plate body 1 surface, should notice that the upper surface of all new perfusion parts should be higher than plate body upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) grouting material 40 parts of new perfusion are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its structure is as shown in figure 18.
Grouting material described in this example 40 is for being mixed with the high-strength mortar of fibrous material.After substrate maintenance completes, by the baffle plate 7 arranging between railway roadbed substrate precast plate of the present invention, without dismounting, its shared segment space is used as the shrinkage joint in substrate.In addition, after new perfusion part reaches primary strength, just can remove baffle plate 14 and counterweight, to facilitate maintenance.Certainly, when sweep is larger, foundation slope hour, also can not arrange baffle plate 14, utilizes and manually gradient face is smeared together, specifically can be according to the actual demand selection concrete operation method of engineering.In other the present invention, adopting in the back in the embodiment of baffle plate is also so, at this, is described in the lump.The plate body that the longitudinal centre line place plate length of take in this example is 1.15m describes as example, when application, spacing 5cm between adjacent plate body, like this, after grouting material is filled space between adjacent plate body, on the one hand adjacent railway roadbed substrate precast plate of the present invention is linked to be to an integral body, improve globality, can continue on the other hand the length of plate body, make plate body length reach 1.2m left and right, be two times of conventional fastener spacing 0.6m length, and then match with the spacing of ballast bed structure Elastic vibration isolator.
In this routine described technical scheme, elevation at the bottom of easement curve segment base and cross fall are controlled by the size of railway roadbed substrate precast plate of the present invention, because railway roadbed substrate precast plate is manufactured outside tunnel, its dimensional accuracy and crudy more easily guarantee, can effectively guarantee that every key index of final substrate meets instructions for use.Be conducive to significantly reduce number of times and the workload of after-treatment, reduce construction cost, and greatly improve speed of application.In the construction method step (3) that this example is recorded, after the height of adjusting plate bodys 1 by height and inclination-angle regulating device 3 and the gradient, increase plate body horizontal level and confirmed operation, as there is plate body displacement, and can make timely corrections, be conducive to further guarantee and improve workmanship, in addition, based on this know-why, in other embodiment, also can adopt this operation, at this, illustrate in the lump.In step (3), for conveniently stripped, on baffle plate 14, can also scribble in advance release agent or interleaving agent, such as silicone oil etc.
In this example, adopt the mode of slip casing by pressure, from grout hole 13 and grouting channel 9, pour into grouting material from bottom to top, be not easy to produce air gap, density is good.Certain know-why based on this example Suo Shu, in railway roadbed substrate precast plate of the present invention, position, shape and the quantity of grouting channel can be varied, as shown in figure 19, plate body 1 place, both sides of the edge can respectively arrange the grouting channel 9 that a cross-sectional profiles is part-circular to example; Also can be as shown in figure 20, in plate body 1, being symmetrical arranged two cross-sectional profiles is circular grouting channel 9, can play same effect; Certainly because the length of the railway roadbed substrate precast plate of the present invention adopting is very short, in actual applications, also grouting channel 9 can be only set on part plate body, in addition, grouting channel 9 also can be arranged on the side that the gradient is higher, specifically as shown in figure 21, and like this, when perfusion, slurry flows toward lower from eminence automatically, easily guarantees to fill closely knit.
In addition, the railway roadbed substrate precast plate of the present invention shown in Figure 16 of take is example, when plate body is lighter, screw rod 4 in height and inclination-angle regulating device 3 also can adopt the nonmetals such as nylon, plastics to make, on the one hand can weight reduction, be conducive on the other hand reduce costs, can also improve the insulating properties of substrate.This point is applicable too for technical scheme described in other embodiment, at this, illustrates in the lump.
Embodiment tetra-
Railway roadbed substrate precast plate of the present invention as shown in Figure 22 and Figure 23, be with the difference of the precast plate of railway roadbed substrate shown in Fig. 9 in embodiment bis-, in order to guarantee the structural strength of plate body 1, avoid both lateral sides plate body to cross manufacture inconvenience and the strength decreased of strip, shorten plate body 1 along horizontal length.Plate body 1 along self longitudinally length be 3.6m, grouting channel is no longer set on plate body 1.
When applying this routine described railway roadbed substrate precast plate of the present invention constructing floating ballast bed substrate in tunnel, the shield tunnel cathetus section of take is example, can operate in accordance with the following steps:
(1) clean out the foreign material on ballast bed structure base surface (being tunnel surface), according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, as shown in figure 25, while putting, using four railway roadbed substrate precast plates 20,21,22 of the present invention and 23 as one group, on the same group, adjacent railway roadbed substrate precast plate utilizes that structure glue 24 is bonding to be integral, and every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 7 that pitch plank is made;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped, as shown in figure 24 with the design work face of this place's substrate;
(4) with reference to the end face of railway roadbed substrate precast plate, by the gap between railway roadbed substrate precast plate side and both sides tunnel surface 6, in the space between plate body and tunnel surface 6, pour into high-strength concrete 25, until fill closely knit completely, in this example, high-strength concrete 25 is specially steel fibrous concrete, cavity in anchoring piece 5 and between screw rod 4 is partly closely knit with grouting material 40 fillings in addition, should notice that the upper surfaces of all new perfusion parts should be higher than plate body upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) high-strength concrete 25 of new perfusion and grouting material 40 parts are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its structure is as shown in figure 26.
After substrate maintenance completes, baffle plate 7 take up spaces are used as the shrinkage joint in railway roadbed substrate.In addition, because the railway roadbed substrate precast plate transverse width adopting in this example is narrower, therefore in use, elastic vibration isolation device in ballast bed structure newly pours on the surface in region beyond may putting at least partly plate body 1, so should note controlling the planeness of new perfusion part upper surface after perfusion high-strength concrete 25, its upper surface flatness error and plate body 1 are controlled at equally and be less than 2mm/m
2, to meet the instructions for use of substrate.It is pointed out that in the present invention owing to having adopted railway roadbed substrate precast plate, to new concrete perfusion part, can form a good reference plane, and the area of new perfusion part also significantly reduces, more easily construct and guarantee precision.
This routine described railway roadbed substrate precast plate of the present invention, has shortened plate body 1 along horizontal length, can prevent that the thinner plate body intensity causing in marginal portion from declining, and also reduced the difficulty of plate body processing and fabricating and transportation simultaneously.In addition, because the gap between plate body and both sides tunnel wall is larger, therefore need not grouting channel be additionally set, plate body structure is simpler.This routine described the present invention's application railway roadbed substrate precast plate is constructed the construction method of substrate, owing to adopting, the lateral length of plate body is shorter, while finally coordinating with floating plate Elastic vibration isolator, Elastic Isolator may be placed in the structure of grouting formation at least partly, therefore as the case may be, in construction, can select the packing material that steel fibrous concrete equal strength is higher, to guarantee working strength requirement.In general, the intensity of the packing materials such as railway roadbed substrate precast plate of the present invention and selected high-strength concrete and grouting material is all not less than the concrete intensity of C40, thereby guarantees that the bulk strength of the final railway roadbed substrate of the present invention forming is not less than the concrete prescribed strength of C40.
Embodiment five
Railway roadbed substrate precast plate of the present invention as shown in Figure 27 and Figure 28, be with the difference of the precast plate of railway roadbed substrate shown in Figure 23 in embodiment tetra-, the anchoring piece 5 that steel plate forms in advance in plate body 1, and extends plate body 1 from both sides, screw is set on anchoring piece 5 and coordinates with screw rod 4.Plate body 1 along self longitudinally length be 4.15m.In addition, the soffit of plate body 1 is also provided with concaveconvex structure 26.
When applying this routine described railway roadbed substrate precast plate of the present invention constructing floating ballast bed substrate in tunnel, take common curved section as example, can operate in accordance with the following steps:
(1) clean out the foreign material on ballast bed structure base surface (being tunnel surface), according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, as shown in figure 30, while putting, using three railway roadbed substrate precast plates 30,31 of the present invention and 32 as one group, every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 7 that pitch plank is made;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped, as shown in Figure 29 and Figure 30 with the design work face of this place's substrate;
(4) as shown in figure 30, at the longitudinal two ends of railway roadbed substrate precast plate, end face with reference to railway roadbed substrate precast plate arranges baffle plate 27, and utilize counterweight 28 to push down baffle plate 27, by the grout hole 29 arranging on baffle plate 27, adopt the mode of slip casing by pressure to pour into high-strength concrete 25 in the space between plate body 1 and tunnel surface 6, until fill closely knit completely, be noted that especially, gap 24 on the same group between adjacent railway roadbed substrate precast plate is also filled closely knit by high-strength concrete 25, in order to prevent that high-strength concrete 25 from overflowing from grout hole 29, after perfusion, grout hole 29 is sealed, the upper surface that should note all new perfusion parts should be higher than plate body upper surface,
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) high-strength concrete 25 parts of new perfusion are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its cross-sectional structure is as shown in figure 31.
After substrate maintenance completes, baffle plate 7 take up spaces are used as the shrinkage joint in railway roadbed substrate.Railway roadbed substrate precast plate of the present invention described in this example, owing to utilizing structure glue to fill the gap between plate body in bend substrate work progress, has improved globality on the one hand, can effectively prevent that in filling process, plate body is shifted; On the other hand, plate body as shown in figure 27, can be made into the shape of rule relatively, makes simpler.In addition, anchoring piece 5 and screw rod 4 are buried in High Strength Concrete Structures, and integral body is more attractive in appearance.Because the soffit of plate body 1 is also provided with concaveconvex structure 26, so plate body 1 is stronger with the High Strength Concrete Structures adhesion of later stage perfusion, and the globality of the final underlying structure forming is also better.Based on this know-why, utilization is embedded the methods such as sand grains, rubble, at plate body soffit, convex-concave structure is set, or railway roadbed substrate precast plate of the present invention carries out dabbing processing in advance at plate body soffit before using, also can play good effect, if the prefabricated plate body soffit roughness directly obtaining is enough large certainly, without other, processes also can be directly used in and construct railway roadbed substrate of the present invention.
Embodiment six
Railway roadbed substrate precast plate of the present invention as shown in Figure 32 and Figure 33, comprise by the prefabricated plate body forming 1 of Reinforced Concrete Materials, the size of plate body 1 is less than the actual design size of substrate in engineering, on plate body 1, be arranged with four height and inclination-angle regulating device 3, wherein, plate body 1 along self longitudinally length be 2m.Described height and inclination-angle regulating device 3 comprise the anchoring piece 5 of steel, are also provided with the screwed hole and the screw rod 4 that cooperatively interact on anchoring piece 5, and screw rod 4 is also for steel anchoring piece 5 and plate body 1 are prefabricated into one.Plate body 1 upper surface flatness error is less than 2mm/m
2.In addition, plate body 1 middle part is also provided with a loss of weight through hole 60.The intensity of the concrete material adopting in plate body is not less than the concrete strength criterion of C40.
Take below and on viaduct, apply this routine described railway roadbed substrate precast plate of the present invention and construct railway roadbed substrate as example is specifically described, specifically can operate in accordance with the following steps:
(1) clean out the foreign material on ballast bed structure base surface (being the beam surface of bridge superstructure), according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) as shown in Figure 34 and Figure 35, prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, while putting, using three railway roadbed substrate precast plates 61,62 of the present invention and 63 as one group, every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 64 that pitch plank is made, and along plate body both sides, template 66 is set respectively the space between every group of railway roadbed substrate precast plate and beam surface 67 is sealed;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped with the design work face of this place's substrate, by utilizing between railway roadbed substrate precast plate adjacent on the same group, structure glue 65 is bonding to be integral, specifically as shown in figure 35;
(4) with reference to the end face of railway roadbed substrate precast plate, by the loss of weight through hole 60 arranging on plate body, adopt the mode of slip casing by pressure to pour into pea gravel concreten 68 in the space between plate body and beam surface 67, until fill closely knit completely, it should be noted that, loss of weight through hole 60 is also filled closely knit with pea gravel concreten 68, cavity in anchoring piece 5 and between screw rod 4 is partly closely knit with grouting material 40 fillings in addition, should notice that the upper surfaces of all new perfusion parts should be higher than plate body upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) pea gravel concreten 68 of new perfusion and grouting material 40 parts are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its cross-sectional structure is as shown in figure 36.
Due to the specific (special) requirements to draining and cabling etc. on viaduct, generally, 6m left and right in interval just need to arrange a block 64, the wider width of baffle plate 64, generally more than 100mm, after can being chosen in pea gravel concreten 68 initial sets or before railway roadbed substrate is used, baffle plate 64 is removed, left space is as shrinkage joint, gutter and cross the use of rail pipeline passway.
The railway roadbed substrate precast plate that this example is described, except having the general character advantage described in embodiment mono-, owing to being provided with loss of weight through hole 60 on plate body, so plate body weight is lighter, is conducive to transportation and onsite moving.In addition, owing to being provided with loss of weight through hole, do not need additionally to arrange grouting channel, and in loss of weight through hole after fill concrete, fixing more firm on bridge superstructure surface 67 of railway roadbed substrate precast plate, is conducive to improve the stability of underlying structure again.In addition, be noted that, because external environment condition is poor, therefore the requirement of strength of the new perfusion selected concrete material of part and grouting material is high, so in this routine described technical scheme, the intensity of pea gravel concreten 68 must not, lower than C40 concrete strength, can be selected the even more concrete of high grade of C50 if desired.Certainly, in this example, also can utilize pea gravel concreten to substitute grouting material 40 and be filled in the cavity part in anchoring piece 5 and between screw rod 4, also can serve the same role.
Know-why based on this example Suo Shu, the structure of railway roadbed substrate precast plate of the present invention can also be done many differentiation, for example different according to the physical length of plate body, the quantity of loss of weight through hole can be one, also can be more than two or two, in addition, the concrete mode of layout is longitudinally or along laterally, also can change to some extent.Concrete example, railway roadbed substrate precast plate of the present invention, is laterally set up in parallel two loss of weight through holes 60 along plate body 1 as shown in figure 37; Railway roadbed substrate precast plate of the present invention arranges four loss of weight through holes 60 on plate body 1 as shown in figure 38; Railway roadbed substrate precast plate of the present invention, longitudinally arranges two loss of weight through holes 60 along plate body 1 as shown in figure 39.These technical schemes are all the simple differentiation of this routine described technical scheme, also can realize same effect, in the protection domain all requiring in the present invention.
For the beam surface of viaduct, be provided with in addition the situation of anchor structure, can convex-concave structure be set in railway roadbed substrate precast plate of the present invention bottom surface coordinates and dodges, and finally utilize concrete or grouting material that railway roadbed substrate precast plate of the present invention is connected with bridge surface, due to the existence of anchor structure in new perfusion part, the railway roadbed substrate finally obtaining has better horizontal stability.Embodiment seven
Railway roadbed substrate precast plate of the present invention as shown in Figure 40 and Figure 41, be with the difference of the substrate of railway roadbed shown in Figure 32 precast plate, the plate body of railway roadbed substrate precast plate consists of two longitudinal spandrel girders 69 and two connectors 70, wherein, longitudinally spandrel girder 69 and connector 70 are made by Reinforced Concrete Materials, the cage of reinforcement integrated setting of the two.In addition, the end face of connector 70 is a little less than the end face of longitudinal spandrel girder 69.In addition, height and inclination-angle regulating device 3 arrange three altogether, wherein, on a longitudinal spandrel girder 69, arrange two, arrange one on another root.It should be noted that, the cavity 71 that longitudinally spandrel girder 69 and connector 70 surround has played the function of loss of weight through hole.
Because the function of longitudinal spandrel girder 69 in ballast bed structure is mainly used for supporting isolation mounting, the intensity of the concrete material using in therefore longitudinal spandrel girder 69 is not less than the concrete prescribed strength of C40.For connector 70, it requires relatively low, as long as bonding strength is enough, according to the concrete size of connector and the actual needs of engineering, in manufacture process, also can adopt more low-grade concrete material, for example adopt C30 concrete, but, for guaranteeing the bulk strength of underlying structure, in general, the selected concrete material of connector at least will reach the concrete strength level of C30.
In the ballast bed structure engineering of ground line, apply this routine described railway roadbed substrate precast plate of the present invention and construct railway roadbed substrate and can operate in accordance with the following steps:
(1) ballast bed structure base surface (being road bed) being made to surperficial dabbing processes, then clean out the foreign material on ballast bed structure base surface, according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) as shown in Figure 42 and Figure 43, prefabricated railway roadbed substrate precast plate is transported to job site, and contrasted line and be placed in the relevant position on ballast bed structure base surface, while putting, using two railway roadbed substrate precast plates 72 of the present invention and 73 as one group, every group of longitudinal two ends of railway roadbed substrate precast plate arrange respectively the baffle plate 74 that pitch plank is made, and along plate body both sides, template 75 are set respectively;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device 3, adjust height and the gradient of plate body 1, the end face of plate body is overlapped with the design work face of this place's substrate, above railway roadbed substrate precast plate, counterweight 76 is set, specifically as shown in figure 43;
(4) with reference to the end face of connector 70 in railway roadbed substrate precast plate, the mode that cavity 71 by arranging on plate body adopts slips casing by pressure is poured into grouting material 40 in the space in the space between plate body and road bed 77 and between plate body and template 75, until fill closely knit completely, it should be noted that, in cavity 71, also with grouting material 40, fill closely knit, cavity in anchoring piece 5 and between screw rod 4 is partly closely knit with grouting material 40 fillings in addition, should notice that the upper surface of all new perfusion parts is all concordant with the end face of connector 70;
(5) according to aforesaid operations method, complete the construction and installation of other group railway roadbed substrate precast plates;
(6) grouting material 40 parts of new perfusion are carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate, i.e. the railway roadbed substrate that the present invention's application railway roadbed substrate precast plate is constructed, its cross-sectional structure is as shown in figure 44.
After substrate maintenance completes, baffle plate 74 is without dismounting, and its take up space is used as the shrinkage joint in railway roadbed substrate.It should be noted that, described grouting material 40 is specially high-strength mortar, due to for outdoor environment, should guarantee that the cured strength of selected grouting material 40 is not less than the concrete prescribed strength of C40.After the grouting material 40 of new perfusion reaches primary strength, get final product stripping 75 and take off counterweight 76; then continue to implement maintenance, until new perfusion part reaches design strength, during the new perfusion part of reply protect; avoid its too early load-bearing, cause occurring mass defect.
The railway roadbed substrate precast plate that this example is described, identical with embodiment six, have advantages of and be convenient to transportation and onsite moving.This routine resulting railway roadbed substrate of the present invention utilizes longitudinal spandrel girder 69 of railway roadbed substrate precast plate to support the elastic vibration isolation device in ballast bed structure in follow-up use procedure, because railway roadbed substrate precast plate plate body upper surface flatness error is less than 2mm/m
2, and selected concrete strength is not less than C40 concrete strength, therefore can meet the requirement of ballast bed structure to substrate completely.For later stage perfusion part, because its upper surface is concordant with the end face of connector 70, end face lower than longitudinal spandrel girder 69, therefore do not affect the use of substrate, the requirement of the aspects such as effects on surface planeness significantly reduces, low to operative skill requirement in work progress, be conducive to improve efficiency of construction, reduce construction cost.
Know-why based on this example Suo Shu, in railway roadbed substrate precast plate of the present invention, the quantity of connector can be set according to actual needs, its quantity can be specifically that one, two, three are even more, and the form of structure of connector also can be varied, it adopts Reinforced Concrete Materials makes except the same with longitudinal spandrel girder, connector also can consist of steel bar framework, or directly consists of shape.Described shape comprises angle steel, channel-section steel, i iron, reinforcing bar, steel pipe etc.Railway roadbed substrate precast plate of the present invention as shown in figure 45 for example; in its plate body, longitudinally the length of spandrel girder 69 is longer; for guaranteed strength; four connectors 70 are set between two longitudinal spandrel girders 69; connector 70 by square steel pipe, formed and with longitudinal spandrel girder 69 in the pre-colligation of cage of reinforcement or weld together, after the cage of reinforcement fluid concrete of longitudinal spandrel girder, and then be solidly fixed with whole longitudinal spandrel girder; can realize good effect, in the protection domain all requiring in the present invention.
Embodiment eight
Railway roadbed substrate precast plate of the present invention as shown in Figure 46 and Figure 47, is with the difference of the substrate of railway roadbed shown in Figure 45 precast plate, connector 70 consists of cage of reinforcement.In addition, in order to meet the needs of draining, the upper surface at connector 70 middle parts is fixedly installed the loss template 78 corresponding with gutter shape, lose template 78 and made by iron sheet, and colligation is fixed on connector 70.In addition, adopt height and the inclination-angle regulating device 3 of structure described in embodiment mono-.
As shown in figure 48, while being applied in the tunnel of shield structure structure, described in its construction method and embodiment mono-, step is basic identical, no longer from the beginning, be described, when difference is to pour into grouting material 40, by the cavity 71 shown in Figure 46, adopt the mode of slip casing by pressure to pour into grouting material 40 in the space of plate body and tunnel surface 6, in the space of cavity 71 and connector 70, also fill grouting material 40, until fill closely knit.The structure of the railway roadbed substrate of the present invention finally obtaining after protection and maintenance as shown in figure 49.
Compare with embodiment mono-, the Unit Weight of the railway roadbed substrate precast plate described in this example is lighter, and reason is convenient to transportation and onsite moving.In addition, the railway roadbed substrate of the present invention obtaining by this routine technical scheme, because the cavity 71 in every railway roadbed substrate precast plate is all that scene completes perfusion grouting material, therefore more solid and reliable for fixing of railway roadbed substrate precast plate, the stability of the railway roadbed substrate forming is also stronger.Be noted that in addition, because the condition such as environment temperature and humidity in tunnel is relatively outdoor stable many, therefore in tunnel, in some engineering, grouting material 40 cured strength that adopt meet C30 concrete strength level and can meet design requirement, but in the present invention, the later stage is poured into selected grouting material or concrete solidification intensity never can be lower than the concrete intensity of C30.
Embodiment nine
Railway roadbed substrate precast plate of the present invention as shown in figure 50, be with the difference of the substrate of railway roadbed shown in Figure 45 precast plate, connector 70 consists of square steel pipe, and the adpting flange 80 arranging by two ends and securing member 81 links into an integrated entity with longitudinal spandrel girder 69, in corresponding longitudinally spandrel girder 69, anchoring piece (common structure does not specifically illustrate in figure) being set coordinates with adpting flange 80 and securing member 81.
The railway roadbed substrate precast plate of the present invention that this example is described, has adopted split-type structural between connector 70 and longitudinal spandrel girder 69, can transport respectively and carry, therefore convenient in transportation and carrying.For guaranteeing that connector 70 and longitudinal spandrel girder 69 can be well on assembled at the scene, in prefabricated process, can be by together with the cage of reinforcement assembled in advance of connector 70 and longitudinal spandrel girder, more longitudinal spandrel girder is carried out to pouring concrete, to guarantee quality of fit.Except scene carry out assembled, the railway roadbed substrate precast plate shown in its application process and Figure 40, Figure 45 is basic identical, at this, is no longer repeated in this description
By above-described embodiment, can find out, in construction method of the present invention, the grouping of railway roadbed substrate precast plate of the present invention can be set according to the long actual conditions of plate, concrete can be made as one group by adjacent two railway roadbed substrate precast plates of the present invention, also can be that three, four continuous even more railway roadbed substrate precast plates of the present invention are made as one group, can realize good effect.Be noted that the present invention described in composing a piece of writing longitudinally, corresponding with the bearing of trend of rail; Described laterally, laterally corresponding with rail.In addition, the present invention is not limited to above-described embodiment application, the know-why based on narrating herein, and related art scheme also can cross-reference, in the protection domain all requiring in the present invention.
Claims (20)
1. a railway roadbed substrate precast plate, is characterized in that comprising that the size of plate body is less than the design size of substrate by the prefabricated plate body forming of Reinforced Concrete Materials, and plate body is provided with at least three height and inclination-angle regulating device.
2. railway roadbed substrate precast plate according to claim 1, is characterized in that height and inclination-angle regulating device comprise and the anchoring piece of plate body integrated setting, and anchoring piece is provided with screwed hole and the screw rod cooperatively interacting.
3. railway roadbed substrate precast plate according to claim 1, is characterized in that the middle part of plate body upper surface is provided with gutter.
4. railway roadbed substrate precast plate according to claim 1, is characterized in that plate body is provided with grouting channel.
5. railway roadbed substrate precast plate according to claim 1, is characterized in that plate body comprises longitudinal spandrel girder and connector, and longitudinally spandrel girder arranges two altogether, between two longitudinal spandrel girders, at least one connector is set.
6. railway roadbed substrate precast plate according to claim 5, is characterized in that the upper surface at connector middle part is fixedly installed the loss template corresponding with gutter shape.
7. railway roadbed substrate precast plate according to claim 5, is characterized in that connector consists of steel bar framework or shape.
8. railway roadbed substrate precast plate according to claim 5, is characterized in that at least longitudinal spandrel girder, concrete intensity is not less than the concrete prescribed strength of C40.
9. railway roadbed substrate precast plate according to claim 1, is characterized in that plate body lower surface carries out dabbing processing or be provided with concaveconvex structure.
10. railway roadbed substrate precast plate according to claim 1, is characterized in that in plate body, concrete intensity is not less than the concrete prescribed strength of C40.
11. railway roadbed substrate precast plates according to claim 1, is characterized in that plate body upper surface flatness error is less than 2mm/m2.
12. railway roadbed substrate precast plates according to claim 1, is characterized in that arranging on plate body at least one loss of weight through hole.
13. 1 kinds of application rights require the railway roadbed substrate that in 1-12, described in arbitrary claim, railway roadbed substrate precast plate is constructed, the end face that it is characterized in that railway roadbed substrate precast plate plate body overlaps with the design work face of substrate, closely knit fill concrete or grouting material in space between plate body and ballast bed structure base surface, the upper surface of concrete or grouting material filling part is not higher than plate body end face.
14. railway roadbed substrates according to claim 13, is characterized in that the intensity of concrete or grouting material is not less than the concrete prescribed strength of C30.
15. 1 kinds of application rights require in 1-12 railway roadbed substrate precast plate described in arbitrary claim to construct the construction method of railway roadbed substrate, it is characterized in that comprising the steps:
(1) clean out the foreign material on ballast bed structure base surface, according to the requirement of engineering drawing, according to the disjunction mark of laying a railway track, on the ballast bed structure base surface of job site, rule and identify the plan-position of railway roadbed substrate precast plate;
(2) prefabricated railway roadbed substrate precast plate is transported to job site, and is contrasted line and be placed in the relevant position on ballast bed structure base surface;
(3) according to the requirement of engineering drawing, with reference to the disjunction mark of laying a railway track setting in advance in ballast bed structure, by measurement mechanism, by height and inclination-angle regulating device, adjust height and the gradient of railway roadbed substrate precast plate plate body, the end face of plate body is overlapped with the design work face of this place's substrate;
(4), with reference to plate body end face, to concrete perfusion or grouting material in the space between plate body and ballast bed structure base surface, until fill closely knitly completely, make the upper surface of new perfusion part not higher than plate body upper surface;
(5) according to aforesaid operations method, complete the construction and installation of other railway roadbed substrate precast plate;
(6) concrete of new perfusion or grouting material are partly carried out to maintenance and protection, until it reaches design strength, obtain final complete substrate.
16. according to construction method described in claim 15, it is characterized in that in step (2), at least two adjacent railway roadbed substrate precast plates being set as one group, then all railway roadbed substrate precast plates in same group are carried out respectively to height and gradient adjustment, again to concrete perfusion or grouting material in the space between each piece railway roadbed substrate precast plate in same group and ballast bed structure base surface, until fill closely knit completely, according to aforesaid operations method, having divided into groups, each organizes the construction and installation of railway roadbed substrate precast plate, finally new perfusion part is carried out to maintenance, until it reaches design strength, obtain final complete substrate.
17. according to construction method described in claim 15, it is characterized in that in step (3), and the height of plate body carries out accurate adjustment to the position of plate body after adjusting with the gradient again.
18. according to construction method described in claim 15, while it is characterized in that in step (4) concrete perfusion or grouting material, and concrete or grouting material that employing can Self-leveling, or adopt the method for filling of slip casing by pressure.
19. according to construction method described in claim 18, it is characterized in that, when adopting the method for filling of slip casing by pressure, counterweight being set on plate body.
20. construction methods according to claim 1, is characterized in that according to requirement of engineering, before step (1) is cleared up the foreign material on ballast bed structure base surface, first ballast bed structure base surface are made to surperficial dabbing and process.
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| CN201210327998.7A CN103669114B (en) | 2012-09-06 | 2012-09-06 | Ballast bed base prefabricated slab and application thereof |
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| CN105603833A (en) * | 2016-01-11 | 2016-05-25 | 北京城建设计发展集团股份有限公司 | Integrated filling type prefabricated slab damping track structure |
| CN105625104A (en) * | 2016-01-11 | 2016-06-01 | 北京城建设计发展集团股份有限公司 | Precast slab type vibration damping rail structural system and matched construction method |
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| CN106245466A (en) * | 2016-10-09 | 2016-12-21 | 北京交通大学 | Combined elastic ballast bed structure |
| CN106283943A (en) * | 2016-10-09 | 2017-01-04 | 北京交通大学 | Elastic roadbed structure |
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| CN107725065A (en) * | 2017-09-30 | 2018-02-23 | 中铁第四勘察设计院集团有限公司 | A kind of prefabricated box culvert and its distribution method |
| CN108360307A (en) * | 2018-02-06 | 2018-08-03 | 中铁二院工程集团有限责任公司 | The prefabricated overall assembled track of shield tunnel and construction method |
| CN108560330A (en) * | 2018-06-26 | 2018-09-21 | 青岛科而泰环境控制技术有限公司 | The scalable general railway roadbed of secondary pouring type and its construction method |
| CN108560330B (en) * | 2018-06-26 | 2024-05-17 | 青岛科而泰环境控制技术有限公司 | Secondary pouring type upgradeable general ballast bed and construction method thereof |
| CN109112902A (en) * | 2018-09-14 | 2019-01-01 | 同济大学 | A kind of preformed rubber is concrete road bed |
| CN109611666A (en) * | 2018-12-24 | 2019-04-12 | 南京津码智能科技有限公司 | A kind of installation method of underwater monitoring awareness apparatus bogey and the underwater guidance system instrument based on the device |
| CN109881542A (en) * | 2019-04-16 | 2019-06-14 | 郑州铁路职业技术学院 | An embedded traffic track assembly |
| CN111155365A (en) * | 2020-01-20 | 2020-05-15 | 中南大学 | Assembled floating unit plate and assembling connection construction method |
| CN111155365B (en) * | 2020-01-20 | 2025-03-21 | 中南大学 | Assembled floating unit plate and assembly connection construction method |
| WO2022185101A1 (en) * | 2021-03-05 | 2022-09-09 | Overail S.R.L. | Process and system for laying tracks for underground, railway and tramway lines |
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Inventor after: Bai Tinghui Inventor after: Li Yuchao Inventor after: Yang Hongwei Inventor after: Wang Jian Inventor after: Lei Qianxiang Inventor after: Kong Xiangfei Inventor after: Chen Gaofeng Inventor after: Huang Junfei Inventor after: Wang Zheng Inventor after: Yin Xuejun Inventor after: Liu Jiahua Inventor after: Bi Xiangli Inventor after: Song Jian Inventor after: Fan Hengxiu Inventor after: Wang Jianli Inventor after: Liu Yang Inventor after: Dong Guoxian Inventor before: Bai Tinghui Inventor before: Li Yuchao Inventor before: Yang Hongwei Inventor before: Wang Jian Inventor before: Lei Xiangqian Inventor before: Kong Xiangfei Inventor before: Chen Gaofeng Inventor before: Huang Junfei Inventor before: Wang Zheng Inventor before: Yin Xuejun Inventor before: Liu Jiahua Inventor before: Bi Xiangli Inventor before: Song Jian Inventor before: Fan Hengxiu Inventor before: Wang Jianli Inventor before: Liu Yang Inventor before: Dong Guoxian |
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Effective date of registration: 20210713 Address after: Zhuzhou Road, Laoshan District 266101 in Shandong city of Qingdao province No. 151 in high tech Park Patentee after: QINGDAO CREATE ENVIRONMENT CONTROL TECHNOLOGY Co.,Ltd. Patentee after: Yin Xuejun Address before: 266108 No.7 jingangshan Road, Liuting Airport Industrial Cluster, Chengyang District, Qingdao City, Shandong Province Patentee before: GERB (QINGDAO) VIBRATION CONTROL Co.,Ltd. Patentee before: Yin Xuejun |
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