Tsvagiridzo paCompressive Elastic Modulus Yekuyedza Nzira uye Injiniya Kushandisa kweLaminated Rubber Bearings.

In highway zambuko engineering, laminated rubber bearings anoshandiswa zvakanyanya pakati peiyo superstructure uye substructure yemabhiriji. Vanoita basa rinokosha mu kutumira mitoro yakatwasuka, kugarisana nekugadzirisa deformation ,uye kupa vibration kuparadzaniswa uye kunyorova.

Kubva pakuona kwemakanika, iyi fomu yemaitiro inopindirana zvakanyanya pasi vibration dampers, flexible rubber pads ,uye subgrade damping pads , izvo zvinowanzoitika engineering rabha vibration yekuzviparadzanisa nevamwe zvigadzirwa . Ese aya masisitimu anovimba ne deformation maitiro uye simba rekubvisa simba rerubha zvinhu under compressive uye shear kurodha mamiriro.

Kazhinji, iyo yekusimbisa layers ye laminated rubber bearings consist of akawanda matete simbi ndiro kana simbi waya meshes . Pasi pekumanikidzwa kwezvikamu izvi zvekusimbisa, iyo lateral bulging yerabha inodzvinyirirwa zvinobudirira, nekudaro inovandudza zvakanyanya kumanikidza simba uye kuoma kwese yezvikamu zverabha.

Panguva imwecheteyo, nepo uchivimbisa yakakwirira vertical load-kutakura simba , zvakakwana shear deformation kugona pasi pehorizontal displacement ichiri kuwanikwa. Hunhu uhwu hunokosha zvakaenzana mukugadzirwa kwe subgrade damping pads uye flexible rubber pads.

The compressive elastic modulus yekuyedza nzira ndiyo imwe yenzira dzakakosha dzekuongorora mechanical performance ye laminated rubber bearings . Nekuitwa kweakagadziridzwa zviyero, ese ari maviri maverengero maitiro uye maitiro ekuedza dzakachinja dzinoenderana.

Kuburikidza neongororo yekuedza, chidzidzo ichi chinoongorora zvakarongeka zvinhu zvakakosha zvinokanganisa chokwadi chebvunzo uye dhigirii yavo pesvedzero, ichipa yakasimba tekinoroji hwaro hwebhiriji engineering uye vibration control engineering.

1. Mhedziso yeCompressive Elastic Modulus Testing Method

1.1 Basic Pfungwa

Muna 1981, Lindley PB akakurudzira modhi ye theoretical yekuverenga iyo vertical kuomarara kwemabhengi erubha , zvichibva pakufungidzira kwe ingangoita incompressible elastic maitiro ezvigadzirwa zverubha . Iyi dzidziso kubva ipapo yakashandiswa zvakanyanya muinjiniya maitiro.

Under vertical compressive mitoro , rubber zvinhu zvinoratidzira kwete chete ukobvu-direction compression deformation , asiwo imwe nhanho ye lateral bulging deformation . Iyi mechanical maitiro inoshandawo kune pasi vibration dampers uye flexible rubber pads mu kuvaka vibration control systems.

1.2 Kuverengera Formula

Kune rubber bearing rine n rubber layers , tichifunga kuti rubber zvinhu hazvigoneki uye zvinoiswa pasi compression yakachena , ivo vertical kuoma inoverengwa se:

Kv=E1⋅A0n⋅t1K_v = \frac{E_1 \cdot A_0}{n \cdot t_1}Kv=n⋅t1E1⋅A0

Kupi:

E₁ — Longitudinal elastic modulus yerabha

A₀ — Inoshanda nzvimbo inotakura mutoro

t₁ — Ukobvu hweimwe rubber layer

Iyi fomula ine kukosha kwereferensi kwakakosha laminated rubber bearings, subgrade damping pads ,uye vibration isolation rabha zvigadzirwa zvinoshandiswa muzvitima masisitimu.

2. Dhizaini Pfungwa yeiyo Automatic Compressive Elastic Modulus Testing System

The otomatiki compressive elastic modulus yekuyedza system kunyanya kunosanganisira:

Compression yekuyedza muchina

Displacement uye simba sensors

Nyanzvi yekuongorora uye data yekuongorora software

Panguva yekuedzwa, iyo system inogona ramba uchiwana vertical load uye compression deformation data , kugadzira otomatiki stress-strain curves , uye kuverenga iyo compressive elastic modulus pamwe na kutsauka kuongorora.

Kushandiswa kwegadziriro iyi:

Zvinonyanya kuderedza kushandiswa kwemaoko

Zvinobudirira kudzivisa kuverenga kwevanhu kukanganisa

Inochengeta kukanganisa kwekuedza mukati memiganhu inogamuchirwa

Iyi nzira yekuyedza haishande kune chete laminated rubber bearings , asiwo ku pasi vibration dampers uye flexible rubber pads ye mechanical performance evaluation.

3. Injiniya Nyaya Yekudzidza uye Kuenzanisa kweKuedza Nzira

3.1 Nyaya Tsanangudzo

A laminated rubber bearing yakasarudzwa semuenzaniso wekuyedza ine ma parameter anotevera:

Diameter: 140 mm

Kupedza urefu: 25 mm

Single rubber layer ukobvu: 4 mm

Simbi ndiro ukobvu: 2 mm

Nhamba yesimbi plate layers: 3 layers

Inoshanda nzvimbo inotakura mutoro: 15,366 mm²

Shape factor: 7.0

Total rabha ukobvu: 20 mm

Maererano nemwero mutsva, iyo dhizaini yemhando ye compressive elastic modulus ndizvo (303 ± 60) MPa.

3.2 Pesvedzero yeNzira Dzakasiyana-siyana dzekurodha pamibairo yebvunzo

Kuongorora pesvedzero ye loading nzira , zvirongwa zviviri zvekutakura zvakagadzirirwa:

Scheme 1 (Isiri-yakajairwa kurodha):

Yakajairika kurodha uye kurodha mwero

3 loading cycles

Scheme 2 (Yakajairika kurodha):

Stepwise kurodha zvinoenderana nezviyero zvitsva

Chiyero chega chega chakachengeterwa 120 seconds pamberi pe deformation data kutora

Miedzo yabuda inoratidza izvozvo:

Chirongwa 1 inoratidza kutsauka kunopfuura 3%, pamwe pachena hysteresis migumisiro

Chirongwa 2 inoratidza kutsauka zvishoma pane 3%, kupa zvakanyanya kugadzikana uye zvakavimbika mhedzisiro

Mhedziso iyi inoshandawo sechirevo chakakosha chekuongorora kushanda kwenguva refu kwe subgrade damping pads pasi pemitoro inotakurika.

4. Kuyera Kusavimbika Kuongorora Panguva Yekuedza

4.1 Kusavimbika Zvinhu Zvakazvimiririra Zvezvinhu Zvezvinhu

Izvi zvinonyanya kusanganisira:

Kuyera kurongeka kwemidziyo yekuyedza (mushini wekumanikidza, mita yekutamisa, extensometers, nezvimwewo)

Mitemo yekutenderedza data

Misiyano mukududzira kwakajairwa uye kuverenga nevashandisi

Uku kusava nechokwadi kunogona kuderedzwa zvinobudirira kuburikidza kudzokorora kuedza uye maitiro ekushanda akaenzana.

4.2 Kusavimbika Zvinhu Zvinoenderana neMuedzo Specimen

Izvi zvinosanganisira:

Zvikanganiso mu inobudirira nzvimbo inotakura mutoro

Zvikanganiso zvekuyera mukati yakazara rabha ukobvu uye simbi ndiro ukobvu

Zvikanganiso mu kupera urefu kuyerwa

Kufurira kwe ambient tembiricha uye mwando

Zvinhu zvakadai zvakakosha zvakaenzana mukuyedzwa kwe flexible rubber pads uye pasi vibration dampers.

5. Kudzora kweKuyera Kwese Kusagadzikana

Mushure mekunge maparameter ese ekukanganisa asanganiswa, a kusava nechokwadi kwechiyero inoumbwa. Mitemo yakakodzera inotsanangura zvakajeka zvikanganiso zvinobvumirwa zvakanyanya kune zvakakosha parameters se mutoro uye kutamiswa.

Nekunyatsoomerera kune aya zviyero uye nekudzora zvinobudirira zvikanganiso zvekuwedzera, iyo kuvimbika uye chokwadi chemhinduro dzebvunzo inogona kuvandudzwa zvakanyanya.

Mhedziso

Laminated rubber bearings zvinhu zvinokosha mu highway zambuko zvivakwa ,uye yavo compressive performance zvinokanganisa zvakananga bhiriji kushanda kuchengetedza.

Kuburikidza nekushandiswa kwesainzi kwe compressive elastic modulus yekuyedza nzira , zvakasanganiswa kuyerwa kusava nechokwadi kuongorora , zvikanganiso zvekuwedzera zvinogona kudzorwa zvinobudirira, kuve nechokwadi chepamusoro chekuyedza.

Zvakawanikwa zvechidzidzo ichi hazvingoshandi kune bhiriji engineering , asiwo kupa zvakakosha theoretical and practical references zve dhizaini, kuyedza, uye kushandisa ye pasi vibration dampers, flexible rubber pads ,uye subgrade damping pads , pamwe chete nezvimwe engineering rabha vibration yekuzviparadzanisa nevamwe zvigadzirwa.

In highway zambuko engineering, laminated rubber bearings anoshandiswa zvakanyanya pakati peiyo superstructure uye substructure yemabhiriji.