Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
  • E01D19/00—Structural or constructional details of bridges
  • E01D19/06—Arrangement, construction or bridging of expansion joints
  • E01D19/062—Joints having intermediate beams
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
  • E01D19/00—Structural or constructional details of bridges
  • E01D19/06—Arrangement, construction or bridging of expansion joints

Definitions

• the present invention relates to a bridging device in lamellar construction for a building joint between a first structural part and a second structural part with a plurality of fins.
• the lock-up device has a hydraulic control device for controlling the gap width between the vanes, the hydraulic control device having double-acting hydraulic cylinders each having a movable piston and a piston rod arranged on the piston.
• Each hydraulic cylinder is arranged on a lamella and each piston rod is connected to another lamella.
• the piston defines a first working volume and a second working volume of the corresponding hydraulic cylinder.
• a lamella should also be understood to mean the edge support of a bridging device.
• the known as movement joints or expansion joints construction joints are used to compensate for movements of the building parts relative to each other, so as to prevent damage.
• the building parts may be in particular two parts of a bridge structure, z. B. bridgehead or abutment and bridge trailer or bridge girder or adjacent bridge girders.
• Such movements of the structural parts to each other are unavoidable and can occur, for example, due to thermal expansion or creep and shrinkage of the materials used.
• movements may also occur due to stress caused by the passage of persons or vehicles, for example due to braking loads when braking vehicles. Impact loads occur especially in heavy braking directly in the area of the lock-up device.
• bridging devices are used to bridge the building gap between the two parts of the structure in such a way that vehicles and living beings can safely pass from one construction part to the next.
• lamellar construction which is also known as a center-carrier construction
• the bridging device has a plurality of fins, which are arranged movably on a traverse mounted on the two structural parts.
• control devices are used.
• control devices are regularly constructed mechanically, and are usually kinematically formed with a so-called pivoting traverse or elastic with spring elements as a so-called carrier grate joint.
• pivoting traverse or elastic with spring elements as a so-called carrier grate joint.
• carrier grate joint also referred to as Modulardehnfuge design is Consequently, the total gap to be bridged between the building parts is largely evenly divided over several individual gaps
• a disadvantage of these mechanical solutions is that due to unavoidable compliance, necessary games and wear leads to false control, in which the variable gap widths are uneven. This in turn increases the wear of the control device, generates an increased noise level when driving over the building joints with vehicles and may even lead to dangerous situations due to an excessive gap width.
• Hydraulic control devices have the advantage that can be adjusted due to the approximate incompressibility of the hydraulic fluid, a uniform gap width between the slats or the slats and the edge beams.
• DE 2 060 482 A discloses a pneumatically or hydraulically operated control device with interconnected differential cylinders. Specifically, the use of double-acting cylinders, each with a movable piston and a piston rod arranged on the piston is proposed. Each piston rod is connected to a blade or edge support, and the piston defines a first working volume and a second working volume of the corresponding working cylinder.
• DE 2 060 482 A suggests pairing the working cylinders by the first working volume of a first working cylinder with the second working volume of a second working cylinder, and the first working volume of the second working cylinder with the second working volume of the first working cylinder connected is.
• the piston rod of the first working cylinder is connected to the lamella, on which also the second working cylinder is arranged.
• DE 2 060 482 A moreover proposes to use compressible pressure means.
• the lock-up device is characterized in particular in that the hydraulic control device comprises at least three double-acting hydraulic cylinders, which are connected to each other via a hydraulic connection by the first working volume of each hydraulic cylinder is hydraulically connected to the second working volume of another hydraulic cylinder , so that a hydraulic ring closure between the at least three hydraulic cylinders is formed.
• the double-acting hydraulic cylinders are synchronous hydraulic cylinders in which the first working volume and the second working volume are equal. This ensures that the volume of the incoming and outgoing hydraulic fluid is the same.
• variable gap width between at least four lamellae or edge supports can be evenly distributed during a relative movement of the structural parts. Due to the hydraulic ring closure, all hydraulic cylinders are directly connected, so that the movement of a single hydraulic cylinder is transferred directly to all other hydraulic cylinders directly hydraulically. Thus, the total volume of the first working volume of a hydraulic cylinder and the second working volume of a connected further hydraulic cylinder remains constant. Due to the largely backlash-free direct transmission of the movement between the hydraulic cylinders, a malfunction is theoretically excluded. Furthermore, with the hydraulic control device according to the invention, a lock-up device can be realized, in which fewer hydraulic cylinders are necessary, since no lamella has to be actuated by two hydraulic cylinders due to the hydraulic ring closure.
• the hydraulic control device is designed to allow defined compensating movements.
• the hydraulic control device can be selectively reduced in stiffness, so that pollution-related blockages of the control device or temperature-induced volume changes of the hydraulic fluid does not work affect.
• the hydraulic control device has a kind of "internal resilience, so that a conscious play in the control of the gap widths can be realized.
• the hydraulic connection has at least one flow resistance.
• This can for example be designed as a throttle or aperture.
• the hydraulic control device can be deliberately made sluggish or a control of the gap widths only when a limit pressure is exceeded.
• unnecessary micro-movements can be avoided, which occur, for example, at extremely short-term peak loads.
• the at least one flow resistance is arranged between the first working volume of a hydraulic cylinder and the second working volume of another hydraulic cylinder. It is also conceivable that a flow resistance is arranged between each first working volume of a hydraulic cylinder and the second working volume of another hydraulic cylinder.
• the hydraulic control device is hydraulically biased. This means that the operating pressure of the hydraulic control device is increased relative to the ambient pressure. Thus, a particularly precise gap width control can be achieved, since the hydraulic control device is extremely stiff in this case. Operating loads (for example, by accelerating or braking when passing over the bridging device) are derived in this case without displacement of the slats directly into the building.
• the bridging device has at least one hydraulic accumulator.
• the hydraulic accumulator makes it possible to maintain the operating pressure, in particular when using a preloaded hydraulic control device.
• a temperature-induced change in volume of the hydraulic fluid can be compensated without the preloaded operating pressure rising or falling inadmissible.
• the at least one hydraulic accumulator has a gas tensioning device and is in particular a bubble, piston or diaphragm accumulator.
• Bubble, piston or diaphragm accumulators have the advantage that they have a very high efficiency and have a very short reaction time for the compensation of pressure fluctuations.
• the at least one hydraulic accumulator is connected via a check valve to the hydraulic control device. It is particularly expedient here if an orifice check valve is used.
• a control of the control device carried out by a short-term increase in pressure can be carried out without problem, whereas slow pressure increases - for example due to temperature changes - are compensated by the hydraulic accumulator.
• Slow pressure increases are thus compensated by the hydraulic accumulator, and a pressure drop is compensated immediately.
• An emptying of the lines is therefore largely excluded.
• Hoses for connecting the working volume of the hydraulic cylinder has.
• Hoses have the advantage that they are flexible and thus can follow the movements of the slats or the hydraulic cylinder relative to each other, without causing tension or wedging. Furthermore, this also facilitates the installation of the hydraulic control device, in particular when the hydraulic control device is retrofitted. It is also conceivable that at least partially pipes, for example with rotary connectors or a telescopic mechanism, are used.
• the hoses are connected via couplings, in particular plug-in couplings with the hydraulic cylinders. This facilitates the maintenance, replacement, installation and filling, deflation and venting of the hydraulic control device.
• At least one piston rod is pivotally connected to the lamella.
• a pivot joint with an axis or a joint with several degrees of freedom, e.g. a ball joint or a socket joint, is used.
• the hydraulic cylinders are shear-resistant, but rotatably fixed to the slats or on the edge supports.
• the hydraulic cylinders are hinged to the slats. As a result, essentially all non-linear movements can be recorded without causing damage.
• the hydraulic control device has at least one connection for a pump.
• the lamellae can, for example, be deliberately moved apart or together during maintenance.
• the hydraulic bias can be readjusted or if necessary.
• the loading or unloading of the system can be simplified via the connection of the pump. It is advantageous if the connection is arranged in the region of a coupling.
• the lock-up device has a monitoring device for detecting pressure changes. It is particularly appropriate to monitor the pressure of the hydraulic control device via suitable sensors of the monitoring device, so that a leak or a line break can be detected early.
• the bridging device has at least one mechanical and / or elastic control device, in particular a pivoting crosshead.
• the hydraulic Control device advantageously designed to assist in order to achieve a uniform distribution of the gap widths.
• At least one hydraulic cylinder is a first hydraulic cylinder with a first cross section and if another hydraulic cylinder is a second hydraulic cylinder with a second cross section, the first cross section being different from the second cross section.
• the sum of the first working volume and the second working volume of the first hydraulic cylinder is equal to the buzzer of the first working volume and the second working volume of the second hydraulic cylinder.
• the cross section of the first hydraulic cylinder is larger or smaller than the cross section of the second hydraulic cylinder.
• FIG. 1 shows a perspective view of a partial region of a device according to the invention.
• FIG. 2 shows the partial area shown in FIG. 1 in the contracted state
• FIG. FIG. 3 is a bottom view of a lockup device according to the invention according to a second embodiment
• FIG. 4 the bridging device shown in Fig. 3 in collapsed
• FIG. 5 is a bottom view of a lockup device according to the invention according to a third embodiment
• FIG. 6 is a bottom view of a lockup device according to the invention according to a fourth embodiment
• FIG. 7 is a bottom view of a lockup device according to the invention according to a fifth embodiment.
• FIG. 8 is a bottom view of a hydraulic control device according to a sixth embodiment with different cross sections of the hydraulic cylinder.
• FIG. 9 shows a bottom view of a hydraulic control device with hydraulic accumulator.
• a portion of a lock-up device 1 is shown in lamellar construction.
• the bridging device 1 bridges a building joint between two structural parts (not shown).
• the lockup device 1 has a plurality of slats 2 which are movable relative to each other.
• the lockup device 1 has a hydraulic control device 3.
• the hydraulic control device 3 is provided for controlling the gap widths S between the fins 2.
• the hydraulic control device 3 consists of three double-acting hydraulic cylinders 4.
• the hydraulic cylinders 4 are all of the same design, so that the structure of a hydraulic cylinder 4 will be described below.
• the hydraulic cylinder 4 has a piston 5 and a piston rod 6 which is connected to the piston 5 in a shear-resistant manner.
• the piston 5 defines a first (variable) working volume 7a and a second (variable) working volume 7b in the hydraulic cylinder 4.
• Each hydraulic cylinder 4 is connected to a lamella 2 (or an edge carrier (not shown here) on the building part).
• the hydraulic cylinder 4 is fixed by a clamp 8 on the blade 2.
• the clamp 8 is formed so that the hydraulic cylinder 4 is rotatably mounted about its vertical axis and about its transverse axis.
• the hydraulic cylinder 4 is a synchronous cylinder in that the piston rod 6 extends on both sides of the piston 5.
• the piston rod 6 is hinged at one end 9 to a second blade 2.
• the end 9 of the piston rod 6 is hinged to the blade 2, which is directly adjacent to the blade 2, on which the piston rod 6 having hydraulic cylinder 4 is arranged.
• the hydraulic cylinders 4 are connected to each other via a hydraulic connection 10.
• the hydraulic connection 10 consists of three hoses 1 1, whose ends are hydraulically connected in each case via a coupling 12 with a working volume 7 a, 7 b of a hydraulic cylinder 4.
• a first working volume 7a of a hydraulic cylinder 4 is always hydraulically connected to the second working volume 7b of another hydraulic cylinder 4 via a hose 11. This results in a hydraulic ring closure between the hydraulic cylinders 4.
• the hydraulic ring closure of the hydraulic cylinder 4 requires a uniform gap width S between adjacent slats 2 or between a slat 2 and the (not shown) edge support of a building or bridge part. Since the total volume of a hydraulic cylinder 4 always consists of the first working volume 7a and the second working volume 7b, the total volume remains constant during a movement of the piston 5 - and therefore also of the piston rod 6. Furthermore, the total volume also corresponds to the sum of the volume of the first working volume 7a of a hydraulic cylinder 4 and the volume of the second working volume 7b of the other hydraulic cylinder 4 connected therewith via the hose 11.
• a second embodiment is shown in plan view.
• This exemplary embodiment essentially corresponds to the exemplary embodiment shown in FIGS. 1 and 2, the hydraulic control device 3 having a total of six hydraulic cylinders 4. About these six hydraulic cylinders 4 a total of seven slats 2 and five slats 2 and two edge support are controlled. Even if, in principle, it is irrelevant whether the first working volume 7a of a hydraulic cylinder 4 (for example of the hydraulic cylinder 4 shown in FIGS. 3 and 4 as the lowermost hydraulic cylinder 4) is hydraulically connected via the hose 11 to the second working volume 7b of the directly adjacent hydraulic cylinder 4 is, for practical reasons, this is recommended. On the one hand, this promotes clarity and allows an improved response, since the volumes in the hoses 1 1 can thus be kept low.
• the second exemplary embodiment of the bridging device 1 also differs from the exemplary embodiment shown in FIGS. 1 and 2 in that the hydraulic cylinder 4 shown as the lower one in the region of the coupling 12 of the first working volume 7a has a further connection 13 for an external (not shown) ) Pump.
• this connection 13 adjacent lamellae 2 of the bridging device 1 can be deliberately moved apart or together by changing the operating pressure of the hydraulic control device 3 at the corresponding point via the pump. This may be necessary, for example, for functional tests or maintenance work.
• FIG. 5 A third exemplary embodiment of a bridging device 1 according to the invention in plan view is shown in FIG. 5.
• the lockup device 1 largely corresponds to the lockup device 1 shown in FIG. 3, the hydraulic control device 3 having a total of twelve hydraulic cylinders 4. As in the exemplary embodiment shown in FIG. 3, seven slats 2 or five slats 2 and two edge supports are activated via the hydraulic control device 3.
• the twelve hydraulic cylinders 4 are also via a hydraulic connection 10 means Hoses 11 connected to a hydraulic ring closure.
• the first working volume 7a of a hydraulic cylinder 4 is connected to the second working volume 7b of another hydraulic cylinder 4.
• a blade 2 is driven by two hydraulic cylinders 4 here.
• two piston rods 6 are connected with their ends 9 hinged.
• Such a double control of the slats 2 by the hydraulic control device 3 is advantageous in relatively large bridging devices 1, for example, to prevent tilting of the slats 2 at wide to be bridged building joints.
• FIG. 6 shows a fourth exemplary embodiment of a bridging device 1 according to the invention.
• the lock-up device 1 has a total of four separate hydraulic control devices 3, which in turn each have three double-acting hydraulic cylinders 4.
• the three hydraulic cylinders 4 of each hydraulic control device 1 are connected via a hydraulic connection 10 by means of hoses 1 1 to a hydraulic ring closure.
• a plurality of hydraulic control device 3 are provided with hydraulic ring closure in this embodiment.
• a monitoring device 14 is provided.
• This monitoring device 14 monitors the operating pressure of the hydraulic control devices 3. By means of corresponding sensors 15, the hydraulic connection 10 is monitored. If a drop in pressure within the hydraulic connection 10 is detected, the monitoring device 14 displays this. By way of example, this is indicated by dash-dotted lines for the uppermost illustrated hydraulic control device 3. Of course, the monitoring device 14 monitors all the hydraulic control devices 3 of the lockup device 1.
• the monitoring device 14 is designed to detect short-term pressure fluctuations due to the movement of the structural parts as such.
• the monitoring device 14 indicates no leakage at these short-term pressure changes.
• the monitoring device 14 can only indicate leakage if the operating pressure over a certain period of time does not correspond to the desired pressure. This way even a creeping drop in operating pressure can be detected early.
• flow resistances 16 are provided in the hydraulic connection 10.
• the flow resistances 16 are arranged as diaphragms in the hoses 11.
• the Flow resistances can deliberately make the hydraulic control device 3 sluggish, so that short-term loads do not lead to any movement in the lock-up device 1. This is relevant when the hydraulic control device 3 does not require a hydraulic pretension as shown (compare also FIG. 9).
• several flow resistances 16 may be provided. It is also conceivable that only one flow resistance 16 is provided. It is also conceivable that the flow resistance 16 is formed as a valve unit on the coupling 12.
• FIG. 7 A fifth exemplary embodiment of a bridging device 1 according to the invention is shown in FIG. 7.
• the hydraulic control device 3 is used in support of a mechanical control device 17 in the form of a pivoting beam.
• the pivoting beam 17 primarily controls the gap widths S between the slats 2 in a conventional and known manner.
• the hydraulic control device 3 consists in this embodiment of three hydraulic cylinders 4 and is constructed substantially analogous to the hydraulic control device 3 shown in the first embodiment of FIG. 1. The difference is to be seen in that the hydraulic control device 3 according to the fifth embodiment controls only every second blade 2.
• the hydraulic control device 3 is provided in support of the pivoting cross member 17 and minimizes the possibility of erroneous control.
• This fifth exemplary embodiment is particularly suitable as a retrofit solution for existing bridging devices 1, since the actual control of the gap widths S takes place mechanically via the swivel traverse 17. Nevertheless, this makes it possible to largely avoid faulty controls.
• FIG. 8 shows a sixth exemplary embodiment of a bridging device 1 according to the invention.
• the lock-up device 1 analogous to the embodiment shown in FIG. 7, has a mechanical control device 17 in the form of a pivoting traverse.
• the hydraulic control device 3 is used to support this.
• the hydraulic control device has two first hydraulic cylinders 4a having a first cross section and two second hydraulic cylinders 4b having a second cross section. As illustrated, the first hydraulic cylinders 4a drive the directly adjacent blade 2, whereas the second hydraulic cylinders 4b drive the second blade 2.
• FIGS. 1 to 8 have in common that they work without hydraulic bias.
• a sixth embodiment of a lock-up device 1 according to the invention is shown in Fig. 9, in which the hydraulic control device 3 is hydraulically biased. So has an increased operating pressure. Due to the hydraulic bias, the hydraulic control device 3 responds particularly quickly and precisely.
• the hydraulic control device 3 essentially corresponds to the hydraulic control device 3 shown in FIG. 1, the hydraulic control device 3 having a hydraulic accumulator 18 with gas tensioning device.
• the hydraulic accumulator 18 may be, for example, a membrane bladder or piston accumulator.
• the hydraulic accumulator 18 is connected via a spring-loaded orifice check valve 19 to the hydraulic control device 10 via corresponding connecting lines 20, which can be connected to a hose 1 1 as shown.
• a compensation volume is created, whereby an example, temperature-induced volume change of the hydraulic fluid can be compensated. An impermissible increase or decrease in the operating pressure is therefore prevented.

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• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Actuator (AREA)
• Bridges Or Land Bridges (AREA)
• Road Paving Structures (AREA)
• Buildings Adapted To Withstand Abnormal External Influences (AREA)

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• 2016
  • 2016-10-12 DE DE102016219852.1A patent/DE102016219852A1/de not_active Withdrawn
• 2017
  • 2017-08-22 WO PCT/EP2017/071169 patent/WO2018068935A1/de not_active Ceased
  • 2017-08-22 ES ES17755193T patent/ES2800342T3/es active Active
  • 2017-08-22 EP EP17755193.4A patent/EP3449060B1/de active Active
  • 2017-08-22 PT PT177551934T patent/PT3449060T/pt unknown
  • 2017-08-22 US US16/304,777 patent/US10794020B2/en active Active
  • 2017-08-22 JP JP2018563882A patent/JP6935429B2/ja active Active
• 2018
  • 2018-11-22 IL IL263236A patent/IL263236B/en unknown

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