Inhaul cable buffering and energy absorbing type beam falling prevention device suitable for T-beam connection

Abstract

An inhaul cable buffering and energy absorbing type beam falling prevention device suitable for T-beam connection relates to a beam falling prevention device and comprises a cable body, anchorage devices connected to two ends of the cable body, an anchor bearing plate pre-buried in a beam and an energy absorbing device mounted between the anchorage devices and the anchor bearing plate, and steel strands of the cable body are arranged in parallel in a single row or double rows or multiple rows in the vertical direction. Or are arranged in a circular shape; the energy absorption device comprises an inclined energy absorption block and an energy absorption spring, a cable penetrating hole channel is formed in the inclined energy absorption block, the end face of one end of the inclined energy absorption block is an inclined face A, and the inclination angle alpha of the inclined face A ranges from 2 degrees to 38 degrees. The anchor backing plate is provided with an inclined surface B matched with the inclined surface A of the inclined energy absorption block; and the energy-absorbing spring is mounted between the inclined energy-absorbing block and the anchorage device. The device adopts a structure of combining the inclined energy absorption block and the inclined anchor backing plate, meets the installation and use requirements of the T-beam web at different angles, can be used for limiting the T-beam from falling off, and has the effects of buffering and energy absorption.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of anti-falling beam devices, in particular to a kind of cable buffer energy-absorbing type anti-falling beam device suitable for T beam connection. BACKGROUND

[0002] When encountering a major earthquake, in order to prevent the T beam of the bridge from slipping and falling under vibration, an anti-falling energy-absorbing device is usually used to limit the T beam at the connection between the T beam and the pier support. However, the existing anti-falling beam device, such as the energy-absorbing type anti-falling beam device disclosed in the utility model patent with the authorization announcement number CN 215857147U, can prevent the beam from falling, but it cannot meet the installation and use requirements of the T beam web at different angles and is not suitable for limiting the T beam from falling. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a cable buffer energy-absorbing type anti-falling beam device suitable for T beam connection to solve the deficiency that the existing technology cannot meet the installation and use requirements of the T beam web at different angles.

[0004] The technical solution to solve the above technical problems is a cable buffer energy-absorbing type anti-falling beam device suitable for T beam connection, which includes a cable body, anchors connected to both ends of the cable body, anchor pads embedded in the beam, and energy-absorbing devices installed between the anchors and the anchor pads. The energy-absorbing device includes an inclined energy-absorbing block and an energy-absorbing spring. The inclined energy-absorbing block has a cable passage inside. One end of the inclined energy-absorbing block is a beveled surface A. The anchor pad has a beveled surface B that matches the beveled surface A of the inclined energy-absorbing block. The energy-absorbing spring is installed between the inclined energy-absorbing block and the anchor.

[0005] The further technical solution of the utility model is that the inclination angle α of the beveled surface A of the inclined energy-absorbing block is 2° to 38°.

[0006] The further technical solution of the utility model is that the steel strands of the cable body are arranged in a vertical single row, double rows, or multiple parallel rows, or in a circular arrangement.

[0007] The further technical solution of the utility model is that the inclined energy-absorbing block has a square, circular, or polygonal structure, and the cable passage of the inclined energy-absorbing block has a square or circular structure.

[0008] Compared with the prior art, the cable buffer energy-absorbing type anti-falling beam device suitable for T beam connection of the utility model has the following beneficial effects:

[0009] 1. It can meet the installation and use requirements of the T beam web at different angles.

[0010] The energy-absorbing device comprises an inclined energy-absorbing block and an energy-absorbing spring, wherein the inclined energy-absorbing block has a cable passing hole inside, and one end surface of the inclined energy-absorbing block is an inclined surface A, and the anchor pad has an inclined surface B matched with the inclined surface A of the inclined energy-absorbing block. The device adopts the structure of the combination of the inclined energy-absorbing block and the inclined anchor pad, meets the installation and use requirements of the T-beam web under different angles, meets the expansion space compensation requirements of the daily bridge structure, can meet the requirement of limiting the T-beam from falling off under the earthquake condition, and has the effect of buffering and energy absorption.

[0011] 2. The working condition of the square hole is suitable

[0012] The device adopts the square structure system design innovation, that is, the cable body arrangement, the anchor device and the energy-absorbing device all adopt the square structure, the working condition of the square hole is suitable, especially the structure of the dense T-beam web reinforcement arrangement, the problem of excessive cutting of the reinforcement due to the design of the circular hole can be avoided, and the adjustment contradiction of the reinforcement hole spacing arrangement is effectively avoided.

[0013] In addition, the innovative design of the square arrangement structure of the cable body of the device cancels the original PE sheath cable body structure, adopts the integrated multiple PE sheath steel strands, adopts the composite wrapping belt with good corrosion resistance, weather resistance and sealing effect, integrally wraps the steel strand bundle in a spiral superposition wrapping mode, and then seals the steel strand bundle again by using the hot plastic sleeve or the heat shrinkable belt with glue, to form a multi-layer isolation and corrosion-resistant cable body structure. The square arrangement mode of the cable body is more suitable for the installation and tensioning needs of the anti-falling beam device under the square slot type space.

[0014] 3. The structure can be conveniently installed in a narrow space

[0015] Another innovative design of the device is that the square spring structure is matched with the square energy-absorbing device, so that the space size of the energy-absorbing structure can be optimized, and the structure can be conveniently installed in a narrow space. The inclined pad can also be designed in a square or polygonal structure according to the space requirements to meet the structure matching.

[0016] 4. Wide application range

[0017] The device is suitable for the anti-falling beam of other structures in addition to the T-beam connection.

[0018] In the following, the technical features of the cable buffering and energy-absorbing type anti-falling beam device suitable for T-beam connection are further described in combination with the drawings and examples. DRAWINGS

[0019] Figure 1 : Structure diagram of the cable buffering and energy-absorbing type anti-falling beam device suitable for T-beam connection in Example 1 Figure I (main view),

[0020] Figure 2: Structure of the cable buffer energy-absorbing type anti-falling beam device for T-beam connection according to embodiment one, Figure II (Front view),

[0021] Figure 3: Arrangement of steel strands of the cable body according to embodiment one,

[0022] Figure 4: Front view of the inclined energy-absorbing block according to embodiment one,

[0023] Figure 5: Left view of the inclined energy-absorbing block according to embodiment one;

[0024] Figure 6: Front view of the inclined energy-absorbing block according to embodiment two,

[0025] Figure 7: Left view of the inclined energy-absorbing block according to embodiment two;

[0026] Figure 8: Front view of the inclined energy-absorbing block according to embodiment three,

[0027] Figure 9: Left view of the inclined energy-absorbing block according to embodiment three;

[0028] Figure 10 Figure 10: Front view of the inclined energy-absorbing block according to embodiment four,

[0029] Figure 11 Figure 11: Left view of the inclined energy-absorbing block according to embodiment four;

[0030] Figure 12 Figure 12: Arrangement of steel strands of the cable body according to embodiment five,

[0031] Figure 13 Figure 13: Front view of the inclined energy-absorbing block according to embodiment five,

[0032] Figure 14 Figure 14: Left view of the inclined energy-absorbing block according to embodiment five;

[0033] Figure 15 Figure 15: Front view of the inclined energy-absorbing block according to embodiment six,

[0034] Figure 16 Figure 16: Left view of the inclined energy-absorbing block according to embodiment six;

[0035] Figure 17 Figure 17: Structure of the cable buffer energy-absorbing type anti-falling beam device for T-beam connection according to embodiment seven,

[0036] Figure 18 Figure 18: Arrangement of steel strands of the cable body according to embodiment seven.

[0037] In the above figures, the reference signs are explained as follows:

[0038] 1 - cable body, 11 - steel strand,

[0039] 2- anchor,

[0040] 3- energy absorbing device, 31- inclined energy absorbing block, 311- cable passage, 312- inclined surface A, 32- energy absorbing spring,

[0041] 4- anchor pad, 41- inclined surface B. DETAILED DESCRIPTION

[0042] Example one

[0043] A cable buffer energy absorbing type anti-falling beam device suitable for T-beam connection (see Figures 1-2 ), comprising a cable body 1 and an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 embedded in the beam, and an energy absorbing device 3 installed between the anchor 2 and the anchor pad 4. Among them:

[0044] The cable body 1 adopts a multi-layer corrosion protection cable body, and the steel strand 11 of the cable body 1 is arranged in a vertical single row. The outer surface of the steel strand bundle is wrapped with special corrosion-resistant wrapping material to form a square wrapped structure steel strand cable body. The technical indicators of the composite cable body structure protection material are: effective thickness >110um, glossiness 20-40(85”), tensile strength >43N, 10mm, tensile elongation at break >90%, adhesive strength 40N / m, tear resistance 18N, and durability meets the requirement that the tensile strength decreases by no more than 15% after 1000 hours of accelerated aging test.

[0045] The anchor 2 adopts a conventional prestressed flat anchor.

[0046] The energy absorbing device 3 includes an inclined energy absorbing block 31 and an energy absorbing spring 32. The inclined energy absorbing block 31 has a square structure and a square cable passage 311 inside. The maximum aperture of the cable passage 311 is greater than the maximum outer diameter of the cable body 1, and the minimum aperture of the cable passage 311 is still greater than the minimum outer diameter of the cable body 1. One end surface of the inclined energy absorbing block 31 is an inclined surface A 312, and the inclination angle α of the inclined surface A 312 is 2°. The energy absorbing spring 32 is installed between the inclined energy absorbing block 311 and the anchor 2 to meet the expansion space compensation requirement of the daily bridge structure. The energy absorbing spring 32 has a square structure and its size matches the size of the anchor.

[0047] The anchor pad 4 has an inclined surface B 41 at one end close to the energy absorbing device 3, which cooperates with the inclined surface A 312 of the inclined energy absorbing block 31.

[0048] The anti-falling beam device meets the application of narrow directional pipeline structure with embedded hole. After installation, the anti-loose limiting is performed through 90° rotation of the direction of the inclined energy absorbing block.

[0049] Example two

[0050] The application relates to a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection, which has the same basic structure as that of the first embodiment and comprises a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in a beam and an energy-absorbing device 3 installed between the anchor 2 and the anchor pad 4. The difference lies in that the cable hole 311 is in a circular structure, the diameter of the cable hole 311 is larger than the maximum outer diameter of the cable body 1, and the inclination angle alpha of the inclined surface A312 of the inclined energy-absorbing block 31 is 5 DEG.

[0051] The specific structure of the cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection is as follows:

[0052] The application relates to a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection (see Figures 1-2 ), which comprises a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in a beam and an energy-absorbing device 3 installed between the anchor 2 and the anchor pad 4. Wherein:

[0053] The cable body 1 adopts a multi-layer anticorrosion protective cable body, the steel strand 11 of the cable body 1 is arranged in a vertical single row, the outer surface of the steel strand bundle is wrapped and protected by special corrosion-resistant wrapping materials to form a square wrapping structure steel strand cable body. The technical indexes of the composite cable body structure protective material are as follows: effective thickness > 110um, glossiness 20-40 (85"), tensile strength > 43N, 10mm, tensile elongation at break > 90%, bonding strength 40N / m, tear resistance 18N, and durability meets the requirement that the tensile strength reduction rate does not exceed 15% after 1000 hours of accelerated aging test.

[0054] The anchor 2 adopts a conventional prestressed flat anchor.

[0055] The energy-absorbing device 3 comprises an inclined energy-absorbing block 31 and an energy-absorbing spring 32. The inclined energy-absorbing block 31 is in a square structure and has a circular cable hole 311 in the inside, the diameter of the cable hole 311 is larger than the maximum outer diameter of the cable body 1, one end surface of the inclined energy-absorbing block 31 is an inclined surface A312, the inclination angle alpha of the inclined surface A312 is 5 DEG, the energy-absorbing spring 32 is installed between the inclined energy-absorbing block 311 and the anchor 2 and is used for meeting the expansion space compensation requirement of daily bridge structure, the energy-absorbing spring 32 is in a square structure and the size is matched with the size of the anchor.

[0056] The anchor pad 4 has an inclined surface B41 at one end close to the energy-absorbing device 3, and the inclined surface B41 cooperates with the inclined surface A312 of the inclined energy-absorbing block 31.

[0057] Embodiment three

[0058] A cable buffer energy type anti-falling beam device suitable for T beam connection, the basic structure of the device is same as embodiment one, and all include a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in the beam, and an energy absorbing device 3 installed between the anchor 2 and the anchor pad 4. The difference lies in that the inclined energy absorbing block 31 is in a circular structure, the cable hole 311 is in a circular structure, and the diameter of the cable hole 311 is greater than the maximum outer diameter of the cable body 1; and the inclination angle α of the inclined surface A312 of the inclined energy absorbing block 31 is 10°.

[0059] The specific structure of the cable buffer energy type anti-falling beam device suitable for T beam connection in embodiment three is as follows:

[0060] A cable buffer energy type anti-falling beam device suitable for T beam connection (see Figures 1-2 ), including a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in the beam, and an energy absorbing device 3 installed between the anchor 2 and the anchor pad 4. Among them:

[0061] The cable body 1 adopts a multi-layer corrosion protection cable body, the steel strand 11 of the cable body 1 is arranged in a vertical single row, the outer surface of the steel strand bundle is wrapped and protected by a special corrosion-resistant wrapping material to form a square wrapped structure steel strand cable body. The technical indicators of the composite cable body structure protection material are: effective thickness > 110um, glossiness 20-40 (85”), tensile strength > 43N, 10mm, tensile elongation at break > 90%, bonding strength 40N / m, tear resistance 18N, and durability meets the requirement that the tensile strength decrease rate after 1000 hours of accelerated aging test is not more than 15%.

[0062] The anchor 2 adopts a conventional prestressed flat anchor.

[0063] The energy absorbing device 3 includes an inclined energy absorbing block 31 and an energy absorbing spring 32. The inclined energy absorbing block 31 is in a circular structure and has a circular cable hole 311 inside, and the diameter of the cable hole 311 is greater than the maximum outer diameter of the cable body 1. One end surface of the inclined energy absorbing block 31 is an inclined surface A312, and the inclination angle α of the inclined surface A312 is 10°. The energy absorbing spring 32 is installed between the inclined energy absorbing block 311 and the anchor 2 to meet the expansion space compensation requirement of the daily bridge structure. The energy absorbing spring 32 is in a square structure and the size matches the size of the anchor.

[0064] The anchor pad 4 has an inclined surface B41 near the energy absorbing device 3, and the inclined surface B41 cooperates with the inclined surface A312 of the inclined energy absorbing block 31.

[0065] Embodiment four

[0066] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0067] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0068] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection. Figures 1-2 ), which comprises a cable body 1, anchor devices 2 connected to two ends of the cable body 1, anchor pad plates 4 pre-buried in beams, and energy-absorbing devices 3 installed between the anchor devices 2 and the anchor pad plates 4.

[0069] The cable body 1 adopts a multi-layer anticorrosion protective cable body, and the steel strands 11 of the cable body 1 are arranged in a vertical single row; the outer surface of the steel strand bundle is wrapped and protected by special corrosion-resistant wrapping materials to form a square wrapping structure steel strand cable body.

[0070] The anchor device 2 adopts a conventional prestressed flat anchor device.

[0071] The energy-absorbing device 3 comprises an inclined energy-absorbing block 31 and an energy-absorbing spring 32; the inclined energy-absorbing block 31 has a circular structure and a square cable passing hole 311 in the inside; the maximum hole diameter of the cable passing hole 311 is greater than the maximum outer diameter of the cable body 1, and the minimum hole diameter of the cable passing hole 311 is still greater than the minimum outer diameter of the cable body 1; one end surface of the inclined energy-absorbing block 31 is an inclined surface A312, and the inclination angle α of the inclined surface A312 is 15°; the energy-absorbing spring 32 is installed between the inclined energy-absorbing block 311 and the anchor device 2 and is used for meeting the expansion space compensation requirement of a daily bridge structure; the energy-absorbing spring 32 has a square structure and is matched with the size of the anchor device.

[0072] The anchor pad plate 4 has an inclined surface B41 at one end close to the energy-absorbing device 3, and the inclined surface B41 is matched with the inclined surface A312 of the inclined energy-absorbing block 31.

[0073] Embodiment five

[0074] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0075] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0076] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection. Figures 1-2 The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0077] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0078] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0079] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0080] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0081] The application discloses a cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection.

[0082] A cable buffer energy type anti-falling beam device suitable for T beam connection, the basic structure of the device is the same as that of embodiment five, and the device comprises a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in the beam, and an energy absorbing device 3 installed between the anchor 2 and the anchor pad 4. The difference lies in that the cable hole 311 of the inclined energy absorbing block 31 is a circular structure, and the diameter of the cable hole 311 is greater than the maximum outer diameter of the cable body 1; the inclination angle α of the inclined surface A312 of the inclined energy absorbing block 31 is 25°.

[0083] The specific structure of the cable buffer energy type anti-falling beam device suitable for T beam connection described in embodiment six is as follows:

[0084] A cable buffer energy type anti-falling beam device suitable for T beam connection (see Figures 1-2 ), comprising a cable body 1, an anchor 2 connected at both ends of the cable body 1, an anchor pad 4 pre-buried in the beam, and an energy absorbing device 3 installed between the anchor 2 and the anchor pad 4. Among them:

[0085] The cable body 1 adopts a multi-layer corrosion protection cable body, and the steel strands 11 of the cable body 1 are arranged in vertical double rows in parallel, and the outer surface of the steel strand bundle is wrapped and protected by special corrosion-resistant wrapping material to form a square wrapped structure steel strand cable body. The technical indicators of the composite cable body structure protection material are: effective thickness > 110um, glossiness 20-40(85”), tensile strength > 43N, 10mm, tensile elongation at break > 90%, bonding strength 40N / m, tear resistance 18N, and durability meets the requirement that the tensile strength decrease rate after 1000 hours of accelerated aging test is not more than 15%.

[0086] The anchor 2 adopts a conventional prestressed flat anchor.

[0087] The energy absorbing device 3 comprises an inclined energy absorbing block 31 and an energy absorbing spring 32. The inclined energy absorbing block 31 has a regular hexagonal structure and a circular cable hole 311 in the inside, and the diameter of the cable hole 311 is greater than the maximum outer diameter of the cable body 1. One end face of the inclined energy absorbing block 31 is an inclined surface A312, and the inclination angle α of the inclined surface A312 is 25°. The energy absorbing spring 32 is installed between the inclined energy absorbing block 311 and the anchor 2 to meet the expansion space compensation requirement of the daily bridge structure. The energy absorbing spring 32 has a square structure and the size is matched with the size of the anchor.

[0088] The anchor pad 4 has an inclined surface B41 near the energy absorbing device 3, and the inclined surface B41 cooperates with the inclined surface A312 of the inclined energy absorbing block 31.

[0089] Embodiment seven

[0090] A cable buffer energy type anti-falling beam device suitable for T beam connection (see Figure 17), including cable body 1 and anchor 2 connected at both ends of cable body 1, anchor pad 4 embedded in the beam, and energy absorbing device 3 installed between anchor 2 and anchor pad 4.

[0091] The cable body 1 adopts a multi-layer corrosion protection cable body, and the steel strands 11 of the cable body 1 are arranged in a circular shape (see Figure 18 The outer surface of the steel strand bundle is wrapped with special corrosion-resistant wrapping material to form a circular wrapped structure steel strand cable body. The technical indicators of the composite cable body structure protective material are: effective thickness > 110um, glossiness 20-40 (85”), tensile strength > 43N, 10mm, tensile elongation at break > 90%, bonding strength 40N / m, tear resistance 18N, and durability meets the requirement that the tensile strength decreases by no more than 15% after 1000 hours of accelerated aging test.

[0092] The anchor 2 adopts a conventional prestressed anchor.

[0093] The energy absorbing device 3 includes an inclined energy absorbing block 31 and an energy absorbing spring 32. The inclined energy absorbing block 31 has a circular structure, and has a circular cable passing hole 311 inside. The diameter of the cable passing hole 311 is greater than the maximum outer diameter of the cable body 1. One end surface of the inclined energy absorbing block 31 is an inclined surface A312, but the inclination angle α of the inclined surface A312 is 30°. The energy absorbing spring 32 is installed between the inclined energy absorbing block 311 and the anchor 2, and is used to meet the expansion space compensation requirement of the daily bridge structure. The energy absorbing spring 32 has a circular ring structure, and the size is matched with the size of the anchor.

[0094] The anchor pad 4 has an inclined surface B41 near the energy absorbing device 3. The inclined surface B41 cooperates with the inclined surface A312 of the inclined energy absorbing block 31.

[0095] Example Eight

[0096] A cable buffer energy absorbing type anti-falling beam device suitable for T beam connection, which has the same basic structure as example seven, and includes cable body 1 and anchor 2 connected at both ends of cable body 1, anchor pad 4 embedded in the beam, and energy absorbing device 3 installed between anchor 2 and anchor pad 4. The difference is that the inclined energy absorbing block 31 has a square structure, and the inclination angle α of the inclined surface A312 of the inclined energy absorbing block 31 is 35°.

[0097] The specific structure of the cable buffer energy absorbing type anti-falling beam device suitable for T beam connection in this example eight is as follows:

[0098] A cable buffer energy absorbing type anti-falling beam device suitable for T beam connection (see Figure 17), comprising a cable body 1 and an anchor 2 connected to both ends of the cable body 1, an anchor pad 4 embedded in the beam, and an energy-absorbing device 3 installed between the anchor 2 and the anchor pad 4.

[0099] The cable body 1 adopts a multi-layer corrosion protection cable body, and the steel strands 11 of the cable body 1 are arranged in a circular shape. The outer surface of the steel strand bundle is wrapped with a special corrosion-resistant wrapping material to form a circular wrapped structure steel strand cable body. The technical indicators of the composite cable body structure protective material are as follows: effective thickness > 110 um, glossiness 20-40 (85”), tensile strength > 43 N, 10 mm, tensile elongation at break > 90%, adhesive strength 40 N / m, tear resistance 18 N, and durability meets the requirement that the tensile strength decrease rate after 1000 hours of accelerated aging test is not more than 15%.

[0100] The anchor 2 adopts a conventional prestressed anchor.

[0101] The energy-absorbing device 3 includes an inclined energy-absorbing block 31 and an energy-absorbing spring 32. The inclined energy-absorbing block 31 has a square structure and a circular cable passing hole 311 in the inside. The diameter of the cable passing hole 311 is greater than the maximum outer diameter of the cable body 1. One end surface of the inclined energy-absorbing block 31 is an inclined surface A312 with an inclination angle α of 35°. The energy-absorbing spring 32 is installed between the inclined energy-absorbing block 311 and the anchor 2 to meet the daily bridge structure expansion space compensation requirement. The energy-absorbing spring 32 has a circular ring structure and its size matches the size of the anchor.

[0102] The anchor pad 4 has an inclined surface B41 near the energy-absorbing device 3. The inclined surface B41 cooperates with the inclined surface A312 of the inclined energy-absorbing block 31.

[0103] Example Nine

[0104] A cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection, which has the same basic structure as that of Example Seven and includes a cable body 1 and an anchor 2 connected to both ends of the cable body 1, an anchor pad 4 embedded in the beam, and an energy-absorbing device 3 installed between the anchor 2 and the anchor pad 4. The difference lies in that the inclined energy-absorbing block 31 has a regular hexagonal structure, and the inclination angle α of the inclined surface A312 of the inclined energy-absorbing block 31 is 38°.

[0105] The specific structure of the cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection according to the ninth embodiment is as follows:

[0106] A cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection (see Figure 17 ), which includes a cable body 1 and an anchor 2 connected to both ends of the cable body 1, an anchor pad 4 embedded in the beam, and an energy-absorbing device 3 installed between the anchor 2 and the anchor pad 4. Among them:

[0107] The cable body 1 adopts a multi-layer anticorrosion protective cable body, the steel strands 11 of the cable body 1 are arranged in a circular shape, the outer surface of the steel strand bundle is wrapped and protected by special corrosion-resistant wrapping material to form a circular wrapped steel strand cable body. The technical indicators of the composite cable body structure protective material are: effective thickness > 110 um, glossiness 20-40 (85"), tensile strength > 43 N, 10 mm, tensile elongation at break > 90%, adhesive strength 40 N / m, tear resistance 18 N, and durability meets the requirement that the tensile strength decrease rate after more than 1000 hours of accelerated aging test is not more than 15%.

[0108] The anchorage device 2 adopts a conventional prestressed anchorage device.

[0109] The energy absorption device 3 includes an inclined energy absorption block 31 and an energy absorption spring 32. The structure and shape of the inclined energy absorption block 31 are basically the same as those of Embodiment Six, and the outer shape is a regular hexagonal structure with a circular cable passing hole 311 in the inside, and the diameter of the cable passing hole 311 is greater than the maximum outer diameter of the cable body 1. One end surface of the inclined energy absorption block 31 is a bevel A 312, but the inclination angle α of the bevel A 312 is 38°. The energy absorption spring 32 is installed between the inclined energy absorption block 311 and the anchorage device 2 to meet the daily bridge structure expansion space compensation requirement. The energy absorption spring 32 is a circular ring structure with a size matching the size of the anchorage device.

[0110] The anchorage pad 4 has a bevel B 41 at one end close to the energy absorption device 3, which cooperates with the bevel A 312 of the inclined energy absorption block 31.

[0111] As a variation of Embodiments One to Nine, the outer shape of the inclined energy absorption block 31 can also be other regular or irregular shapes, and the cable passing hole 311 of the inclined energy absorption block 31 can also be other regular or irregular shapes. The inclination angle α of the bevel A of the inclined energy absorption block is generally 2°-38°.

Claims

1. A cable buffer energy-absorbing type anti-falling beam device suitable for T-beam connection, comprising a cable body (1), an anchor device (2) connected at both ends of the cable body (1), an anchor pad (4) embedded in the beam, and an energy-absorbing device (3) installed between the anchor device (2) and the anchor pad (4), characterized in that: The energy absorbing device (3) comprises an inclined energy absorbing block (31) and an energy absorbing spring (32), the inclined energy absorbing block (31) has a cable passing hole (311) inside, one end face of the inclined energy absorbing block (31) is an inclined surface A (312), and the anchor pad (4) has an inclined surface B (41) matched with the inclined surface A (312) of the inclined energy absorbing block (31); the energy absorbing spring (32) is installed between the inclined energy absorbing block (31) and the anchor device (2).

2. The cable buffer energy dissipation type anti-falling beam device suitable for T-beam connection according to claim 1, characterized in that: The inclined angle α of the inclined surface A (312) of the inclined energy absorbing block (31) is 2°-38°.

3. The cable buffer energy dissipation type anti-falling beam device suitable for T-beam connection according to claim 1 or 2, characterized in that: The steel strands (11) of the cable body (1) are arranged in a vertical single row, a vertical double row or a vertical multiple row in parallel or in a circular arrangement.

4. The cable buffer energy dissipation type anti-falling beam device suitable for T-beam connection according to claim 3, characterized in that: The inclined energy absorbing block (31) has a square, circular or polygonal structure; and the cable passing hole (311) of the inclined energy absorbing block (31) has a square or circular structure.

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