ᮾᛴᘓタᢏ⾡◊✲ᡤሗ No.41
東急建設技術研究所報No.41

U.D.C 534.2

 ⯒⿦ࡀᅛయ㡢㡿ᇦࡢ᣺ື ᐃ⤖ᯝ࡟୚࠼ࡿᙳ㡪ࡢ
舗装が固体音領域の振動測定結果に与える影響のᐇ㦂ⓗ࣭ᩘ್ゎᯒⓗ᳨ウ

U.D.C 534.2

実験的・数値解析的検討㸨℩ᡞᒣ ᫓㍤＊
瀬戸山春輝
せ ⣙㸸 㕲㐨➼࠿ࡽࡢᅛయ㡢ᑐ⟇ࢆ᳨ウࡍࡿ࡟࠶ࡓࡗ࡚ࡣ㸪ᘓ≀᪋ᕤ๓࡟ᩜᆅ⾲㠃࡛᣺ືᐃࡀ⾜ࢃࢀࡿࠋࡋ࠿ࡋ㸪≉࡟㒔ᕷ㒊࡟࠾࠸࡚㸪ᘓ≀᪋ᕤ๓ࡢᩜᆅࡣ⯒⿦ࡉࢀ㥔㌴ሙ➼࡟฼⏝ࡉࢀ࡚࠸ࡿ஦ࡀከ࠸ࠋ⯒⿦ࡣᆅ⾲㠃ࢆᗈࡃそ࠺ࡇ࡜࠿ࡽᆅ⾲㠃ࡢ᣺ື࡟኱ࡁ
࡞ᙳ㡪ࢆཬࡰࡍ࡜ண᝿ࡉࢀ㸪᣺ືᐃ⤖ᯝࢆ฼⏝ࡍࡿ࡟࠶ࡓࡗ࡚ࡣࡑࡢᙳ㡪ࢆᐃ㔞ⓗ࡟▱ࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋࡑࡇ࡛ᮏㄽᩥ࡛ࡣ㸪ᐇ⌧ሙ࡟࠾ࡅࡿ⯒⿦ࡢᙳ㡪ࡢᐃ஦౛ࢆ♧ࡋ㸪ࡉࡽ࡟㸪᭷㝈せ⣲ἲ࡟ࡼࡿᩘ್ゎᯒࢆ⏝࠸࡚⯒⿦ࡢᙳ㡪ࢆ᳨ウࡋࡓࠋ୺せ࡞⤖ᯝࡣ௨ୗࡢ㏻ࡾ࡛࠶ࡿࠋỈᖹ᪉ྥ᣺ືࡣ 20dB ௨ୖࡶᢚไࡉࢀࡿሙྜࡀ࠶ࡾ㸪⯒⿦ࡢ๛ᛶࡢࣂࣛࡘࡁࡢᙳ㡪ࡶཷࡅࡸࡍ࠸ࠋ㖄┤᪉ྥ᣺ື࡬ࡢᙳ㡪ࡣẚ㍑ⓗᑠࡉࡃs5dB ⛬ᗘ࡛࠶ࡗࡓࠋᙳ㡪㔞ࡣ㸪᣺ື※࠿ࡽࡢ఩⨨࣭࿘Ἴᩘ࣭⯒⿦ᵓᡂ࡟ࡼࡾ␗࡞ࡿࠋࡼࡗ࡚㸪༢⣧࡞᪉ἲ࡛⯒⿦ࡢᙳ㡪ࢆ⿵ṇࡍࡿࡇ࡜ࡣ㞴ࡋ࠸࡜⪃࠼ࡽࢀࡿࠋ㺕㺎㺺㺎㺢㺼㸸  ᣺ືᐃ㸪᣺ືຍ㏿ᗘࣞ࣋ࣝ㸪᭷㝈せ⣲ἲ┠ ḟ㸸  1.ࡣࡌࡵ࡟ 2.⌧ሙ3.ᩘ್ࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿ᳨ウᐃ஦౛

4.ࡲ࡜ࡵ࡜⪃ᐹ ࡣࡌࡵ࡟࠸࡚⯒⿦ࡢᙳ㡪ࢆ᳨ウࡍࡿࠋ㕲㐨࡟㏆᥋ࡍࡿᩜᆅ࡟࠾࠸࡚ࡣ㸪㌶㐨࠿ࡽⓎ⏕ࡋࡓ ⌧ሙ᣺ືࡀᆅ┙ࢆఏᦙࡋ࡚ᘓ≀࡟ධᑕࡋ㸪ᒃᐊෆ࡟࠾࠸࡚ᐃ஦౛㕲㐨ᆅୗࢺࣥࢿࣝ࠿ࡽࡢ᣺ື࡟ࡘ࠸࡚㸪஫࠸࡟⣙ 1mᅛయ㡢࡜ࡋ࡚⪺ࡇ࠼ࡿሙྜࡀ࠶ࡿࠋ᪂⠏≀௳࡟࠾࠸࡚ᑐ⟇ࢆ᳨ウࡍࡿ࡟࠶ࡓࡗ࡚ࡣ㸪ᘓ≀᪋ᕤ๓࡟⌧ሙ࡟࡚ࡣ࡞ࢀࡓ࢔ࢫࣇ࢓ࣝࢺ⯒⿦㠃࡜㠀⯒⿦㠃࡜ࢆྠ᫬࡟᣺ືᐃࡍࡿᶵ఍ࡀ࠶ࡗࡓࠋ

ᐃࢆ⾜࠺ࡇ࡜ࡀ୍⯡ⓗ࡛࠶ࡿࠋ

᣺ືࡣᘓ≀ᇶ♏࠿ࡽධᑕࡍࡿࡢ࡛㸪ᆅ୰఩⨨࡛ࡢ᣺ືᐃࡀᮃࡲࡋ࠸ࡀ㸪ᆅ୰࡛ࡢᅛయ㡢㡿ᇦࡢ᣺ືᐃ᪉ἲᐃࡋࡓ఩⨨ࡢ᩿㠃ᅗࢆᅗ ࡟♧ࡍࠋᐃᐃࡢࢲ࢖࢔ࡢᶆ‽ⓗ࡞ᡭἲࡀ☜❧ࡉࢀ࡚࠸࡞࠸ࡇ࡜㸪᥀๐࡟㈝⏝ࢢ࣒ࣛࢆᅗ ࡟♧ࡍࠋ⌧ሙᩜᆅ௬ᅖ࠸ෆഃࡢ 30cm ⛬ࡀ᥃࠿ࡿࡇ࡜࡞࡝ࡢ⌮⏤࡟ࡼࡾ㸪ᆅ⾲㠃࡛ࡢᗘࡲ࡛࢔ࢫࣇ࢓ࣝࢺ⯒⿦ࡉࢀ࡚࠾ࡾ㸪ࡑࢀࡼࡾ᭦࡟ෆ

ᐃࡀ⾜ഃࡢᆅ⾲㠃ࡣ᪤Ꮡᘓ≀ࡀ᧔ཤࡉࢀᅵࡀ㟢ฟࡋ࡚࠸ࡿ≧ࢃࢀࡿࠋࡲࡓ㸪ᅛయ㡢㡿ᇦࡢ᣺ືࡢᐃ࡟࠾࠸࡚ࡣ㸪᣺ືࣆែ࡛࠶ࡿࠋ࢔ࢫࣇ࢓ࣝࢺ⯒⿦㠃࡟ࡣ᣺ືຍ㏿ᗘࣆࢵࢡᐃ⤖ᯝ࡟኱ࡁࡃᙳ㡪ࡍࡿࡇ࢔ࢵࣉࢆ┤⨨ࡁࡋ㸪ᅵࡢ㒊ศ࡟ࡘ࠸࡚ࡣᅗ ࡟♧ࡍ࢔࡜ࡀ▱ࡽࢀ࡚࠸ࡿࠋᆅ⾲㠃࡟㗰〇࡞࡝ࡢ◳࠸ᮺࢆᡴࡕ࣑ࣝᯈ࡛࡛ࡁࡓᯫྎ 2) ࢆᡴ㎸ࡳ㸪ᯈୖ࡟᣺ືຍ㏿ᗘࣆ㎸ࡳ㸪ࡑࡇ࡟᣺ືࣆࢵࢡ࢔ࢵࣉࢆᅛᐃࡍࡿ࡜Ⰻ࠸࡜ࡉࢵࢡ࢔ࢵࣉࢆ⨨࠸ࡓࠋ᣺ືࢆࣞࢥ࣮ࢲ࡟グ㘓ࡋᣢࡕᖐࢀ࡚࠸ࡿ 1)ࠋ

ࡾ㸪ิ㌴㉮⾜᫬ࡢ᣺ືࢆศᯒࡋࡓࠋศᯒ㡯┠ࡣ㸪ิ㌴ࢵࢡ࢔ࢵࣉࡢタ⨨≧ἣࡀࡋ࠿ࡋ㸪≉࡟㒔ᕷ㒊࡟࠾࠸࡚ࡣ㸪ᘓ≀᪋ᕤ๓ࡢᩜᆅ

㏻㐣᫬ࡢ 1/3 ࢜ࢡࢱ࣮ࣈࣂࣥࢻࡢ➼౯᣺ືຍ㏿ᗘࣞ࣋ࡣ࢔ࢫࣇ࢓ࣝࢺ࡞࡝ࡢ⯒⿦ࡀ⾜ࢃࢀ㥔㌴ሙ➼࡟฼⏝ࡉ࡛ࣝ࠶ࡿࠋิ㌴㏻⾜≧ἣ࡟ࡘ࠸࡚ࡣ㏆㞄࡛┠どࡋࡑࡢࢀ࡚࠸ࡿ஦ࡀከ࠸ࠋ⯒⿦ࡣᆅ⾲㠃ࢆᗈࡃそ࠺ࡇ࡜࠿ࡽ᫬้ࢆグ㘓ࡋࡓࠋୖୗ᪉ྥࡢิ㌴ࡑࢀࡒࢀ 13 ᮏࡎࡘࡢᆅ⾲㠃ࡢ᣺ື࡟኱ࡁ࡞ᙳ㡪ࢆཬࡰࡍ࡜ண᝿ࡉࢀࡿࠋࡲࣞ࣋ࣝࢆồࡵࡓࠋࡓ㸪⯒⿦⮬యࡢ๛ᛶ࡟኱ࡁ࡞ࣂࣛࡘࡁࡀ࠶ࡾᏳᐃࡋࡓᐃ್ࡀᚓࡽࢀ࡞࠸࡜ゝࢃࢀ࡚࠸ࡿ 1)ࠋ
ࡼࡗ࡚㸪᣺ືᐃ⤖ᯝ᣺ື᪉ྥࡈ࡜࡟㸪⯒⿦㠃ࡢᐃⅬࡢ⤖ᯝ࠿ࡽ㠀⯒⿦㠃ࡢ⤖ᯝࢆᘬ࠸࡚ࣞ࣋ࣝᕪࢆồࡵ㸪ࡉࡽ࡟ิ㌴ࡢୖୗᐃ⤖ᯝࢆᅛయ㡢ᑐ⟇ࡢ᳨ウ࡟⏝࠸ࡿࡓࡵ࡟ࡣ⯒⿦ࡢᙳ㡪ࢆᐃ㔞ⓗ࡟▱ࡿࡇ࡜ࡀ㔜せ࡛࠶ࡿࠋࡢูࡈ࡜࡟ࣞ࣋ࣝᕪࡢ⟬⾡ᖹᆒࢆ⟬ฟࡋࡓࠋࡑࡢ⤖ᯝࡋ࠿ࡋ࡞ࡀࡽ㸪ࡇࢀࡲ࡛᣺ື

ࢆᅗ ࡟♧ࡍࠋ᣺ືィࡢ≉ᛶ࠾ࡼࡧ SN ẚࢆ⪃៖ࡋ࡚㸪ᐃ࡟ᑐࡍࡿ⯒⿦ࡢᙳ㡪

10㹼80Hz ᖏᇦࡢ⤖ᯝࢆ♧ࡋࡓࠋࡀᐃ㔞ⓗ࡟᳨ウࡉࢀࡓ౛ࡣᑡ࡞࠸ࠋ
ࡑࡇ࡛ᮏㄽᩥ࡛ࡣ㸪⯒⿦㠃࡜㠀⯒⿦㠃࡛ࡢ᣺ືࢆẚ㖄┤᪉ྥ᣺ື(Z)࡟ࡘ࠸࡚ࡣ 2㹼+3dB ࡢᕪ࡟⣡ࡲࡗ࡚㍑᳨ウࡍࡿࡇ࡜࡛⯒⿦ࡢᙳ㡪ࢆᐃ㔞ⓗ࡟ᢕᥱࡍࡿࠋල࠸ࡿࡀ㸪Ỉᖹ᣺ື㸦X,Y㸧ࡣ࿘Ἴᩘࡀ㧗ࡃ࡞ࡿ࡟ࡘࢀ࡚

యⓗ࡟ࡣ㸪ᐇ⌧ሙ࡟࠾ࡅࡿ࢔ࢫࣇ࢓ࣝࢺ⯒⿦ࡢᙳ㡪ࡢ⯒⿦㠃ୖࡢ᣺ືࡢ᪉ࡀᑠࡉࡃ࡞ࡾ㸪ῶᑡ್ࡣ 20dB ㏆ࡃᐃ౛ࢆ♧ࡋ㸪ࡉࡽ࡟᭷㝈せ⣲ἲ࡟ࡼࡿᩘ್ゎᯒࢆ⏝࡟ࡶ㐩ࡍࡿࠋX ᪉ྥ᣺ືࡢ᪉ࡀ Y ᪉ྥ࡟ẚ࡭࡚ῶᑡ㔞ᘓ⠏ᮏ㒊ᢏ⾡⟶⌮㒊ᢏ⾡⟶⌮➨஧ࢢ࣮ࣝࣉ
* 建築本部 技術管理部 技術管理第二グループ

53

東急建設技術研究所報No.41

ࡣ኱ࡁ࠸ࠋX ᪉ྥࡣ⯒⿦ࡀษࢀ࡚࠸࡞࠸᪉ྥ࡛࠶ࡾ Y᫬้Ṕᛂ⟅ゎᯒࢆ⾜ࡗࡓࠋࡑࡢ⤖ᯝ࠿ࡽ㸪⯒⿦ࡢ࠶ࡿ᪉ྥ࡟ẚ࡭ᣊ᮰ࡀ኱ࡁ࠸஦ࡀᙳ㡪ࡋ࡚࠸ࡿ࡜⪃࠼ࡽࢀሙྜ࡜↓࠸ሙྜ࡜ࡢࣞ࣋ࣝᕪࢆ᥎ィࡋࡓࠋࡉࡽ࡟㸪⯒ࡿࠋ⿦ࡢ๛ᛶ㸦ࣖࣥࢢ⋡㸧ࢆኚ໬ࡉࡏࡓሙྜࡢࣞ࣋ࣝᕪࡶ ௨ୖࡢᵝ࡟㸪Ỉᖹ᪉ྥࡢ᣺ືࡣ⯒⿦࡟ࡼࡾᣊ᮰ࡉࢀ㸪᥎ィࡋࡓࠋ㠀⯒⿦㠃࡟ẚ࡭ 5㹼20dB ࡶᑠࡉࡃ࡞ࡿഴྥࡀぢࡽࢀࡓࠋ ᥎ィ᪉ἲ

FEM ࡟ࡼࡿ᫬้ᬺᛂ⟅ゎᯒࢆ⾜ࡗࡓࠋᛂ⟅ィ⟬࡟ࡣ㸪
ᕷ㈍ࡢỗ⏝ FEM ࢯࣇࢺ࢚࢘࢔ࢆ⏝࠸࡚࠸ࡿࠋ
ゎᯒࣔࢹࣝᅗࢆᅗ ࡟♧ࡍࠋᕥྑᑐ⛠ࡢ 2 ḟඖࣔࢹᐃ఩⨨GL࡛ࣝ࠶ࡿࠋᆅ┙ࡣ㸪༢ᒙࡢ↓㝈ᙎᛶయࢆ᝿ᐃࡋࡓࠋ⯒⿦↓ࡋࡢሙྜ A)㸪࠾ࡼࡧ⯒⿦࠶ࡾࡢሙྜ B)ࡢ 2 ࡘࡢሙྜ࡟ࡘ࠸࡚ィ⟬ࢆ⾜ࡗࡓࠋ10mィ⟬ᑐ㇟ࡢ࿘Ἴᩘ⠊ᅖࡣ 10㹼200Hz ࡜ࡋ㸪࣓ࢵࢩࣗᆅୗ㕲㐨䝖䞁䝛䝹

ᅗࢧ࢖ࢬࡣ 6 ࣓ࢵࢩࣗ㸭Ἴ㛗௨ୖ࡜࡞ࡿࡼ࠺ 0.1m ࡢṇ᪉ᙧ࣓ࢵࢩࣗ࡜ࡋࡓࠋ᫬㛫้ࡳࡣ 25,600Hz ࡜ࡋࡓࠋィ⟬ᐃ఩⨨㸦᩿㠃ᅗ㸧᫬㛫㛗ࡣ 0.5 ⛊㛫࡛㸪⥺ᙧゎᯒࢆ⾜ࡗࡓࠋᑐ⛠ቃ⏺ࡢᆅ୰ 7m ῝ࡉࡢ఩⨨ࢆᘧ(1)࡟♧ࡍ࢞࢘ࢫ8ch䝕䝆䝍䝹䝺䝁䞊䝎
RIONDAͲ40௬ᅖࣃࣝࢫࢆ⏝࠸࡚ຍ᣺ࡋࡓࠋ᣺ືィ
RIONVMͲ51݃ሺሻ ൌ ߙ3᪉ྥ᣺ື䝢䝑䜽䜰䝑䝥
ONOSOKKI NPͲ7310Z䜰䝇䝣䜯䝹䝖⯒⿦ᆅ┙ୖߪξʹߨ݁ିሺ௧ି௧బ ሻమൗଶఙమ(1) ୺࡞࿘Ἴᩘ⠊ᅖࡀ 200Hz ௨ୗ࡜࡞ࡿࡼ࠺Ȫ=0.0015 ࡜YXͳࡋ㸪ࣆ࣮ࢡ್ࡀ 1000N ࡜࡞ࡿࡼ࠺Șࢆタᐃࡋࡓࠋࡲࡓ㸪
50ms ࡟ຍ᣺ຊࡢࣆ࣮ࢡࡀ᮶ࡿࡼ࠺࡟タᐃ㸦t0=0.05㸧ࡋ1mᅗᐃࡢࢲ࢖࢔ࢢ࣒ࣛࡓࠋ⯒⿦⾲㠃࡟࠾࠸࡚㸪ᑐ⛠ቃ⏺࠿ࡽ 1㹼12m ࡲ࡛ 1m ࣆࢵࢳࡢⅬ࡛᣺ືຍ㏿ᗘἼᙧࢆồࡵࡓࠋࡉࡽ࡟㸪ࡑࡢἼᙧࢆ 1/3 ࢜ࢡࢱ࣮ࣈศᯒࡋࡓࠋ࢜ࢡࢱ࣮ࣈศᯒ࡟ࡣ㸪GLRION 〇Ἴᙧฎ⌮ࢯࣇࢺ࢚࢘࢔ AS-70 ࢆ⏝࠸㸪༢Ⓨᭀ
270mm⛬ᗘ඲䛽䛨䝪䝹䝖
L=30cm

150mmゅ t10mm

㟢ࣞ࣋ࣝࢆồࡵࡓࠋ࡞࠾㸪ศᯒ࡟ᙜࡓࡗ࡚ࡣ 0 ワࡵࢆ
⾜࠸ 2 ⛊㛗ࡉࡢಙྕࢆ⏝࠸࡚࠸ࡿࠋ௨ୖࡣⴭ⪅࡟ࡼࡿูሗ 3) ࡜ྠᵝࡢᡭἲ࡛࠶ࡾ㸪ヲ⣽࡟ࡘ࠸࡚ࡣཧ↷ࡉࢀࡓ࠸ࠋᅗ ᆅ┙᣺ືᐃ⏝ࡢᯫྎ‫ځ‬ஷ৿ਸச২઴লਡ #P଩ખೝ୆ੀৌู୆ੀ⋇਀ಽ৉ೕ&S PV&V PV̲ NJP0ਸஷ 崔崎崡崹嵓崡‫ك‬$ ๘ಎ૮खͲ5଩ખೝ୆ੀͲ10⋇॔५ই॓ঝॺ๘ಎ W P( H3D̭ ̲ NJP⋈਀ಽ৉ೕ&S PV&V PV̲ NJPਸஷ 崔崎崡崹嵓崡‫ك‬

Ͳ2016

31.5

63% ๘ಎँॉ1/3䜸䜽䝍䞊䝤୰ᚰ࿘Ἴᩘ [Hz]ᅗ ᣺ືຍ㏿ᗘࣞ࣋ࣝᕪ

଩ખೝ୆ੀ౐ਜ਼P ᩘ್ࢩ࣑࣮ࣗࣞࢩࣙࣥ࡟ࡼࡿ᳨ウᆅ┙ཬࡧ⯒⿦ࢆࣔࢹࣝ໬ࡋ㸪᭷㝈せ⣲ἲ㸦FEM㸧ࢆᅗ ゎᯒࣔࢹࣝ⏝࠸࡚㸪ᆅ୰ࢆຍ᣺ࡋࡓሙྜࡢᆅ⾲㠃ࡢ᣺ືຍ㏿ᗘࡢ

54

଩ખೝ୆ੀ

ৌู୆ੀX᪉ྥ ୖ䜚X᪉ྥ ୗ䜚Y᪉ྥ ୖ䜚Y᪉ྥ ୗ䜚Z᪉ྥ ୖ䜚Z᪉ྥ ୗ䜚Ͳ15‫ځ‬ஷ৿ਸச২઴লਡ #P➼౯᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ(⯒⿦ୖ䠉ᆅ┙ୖ䠅 [dB]5東急建設技術研究所報No.41

 ᥎ィ⤖ᯝ᣺ືࡣ㸪125Hz ࡢ 10m ௨ୖࡢ఩⨨ࢆ㝖ࡁ㸪ࣖࣥࢢ⋡ 1/2 ⯒⿦࠶ࡾࡢሙྜ࡜↓ࡋࡢሙྜࡢሙྜ࡜ྠᵝ㸪࡯࡜ࢇ࡝ኚ໬ࡀ↓࠸ࠋ ⯒⿦⾲㠃ྛⅬ࡟࠾࠸࡚㸪⯒⿦࠶ࡾࡢሙྜࡢ⤖ᯝ࠿ࡽ
10ࢆᅗ ࡟♧ࡍࠋ఩⨨㸦ᑐ⛠ቃ⏺࠿ࡽࡢ㊥㞳㸧ࢆᶓ㍈࡟㸪5᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]⯒⿦↓ࡋࡢ⤖ᯝࢆᘬ࠸ࡓࣞ࣋ࣝᕪࢆồࡵࡓࠋࡑࡢ⤖ᯝ࿘Ἴᩘࢆࣃ࣓࣮ࣛࢱ࡟♧ࡋࡓࠋࡓࡔࡋ㸪࿘Ἴᩘࡣ௦⾲ⓗ࡞ᖏᇦ࡜ࡋ࡚ 16, 31.5, 63, 125Hz ࡢࡳࢆ♧ࡋࡓࠋ Ỉᖹ᣺ືࡣ㸪࡯࡜ࢇ࡝ࡢ఩⨨࣭࿘Ἴᩘ࡟࠾࠸࡚⯒⿦࠶ࡾࡢሙྜࡢ࡯࠺ࡀ್ࡀᑠࡉ࠸ࠋࡑࡢῶᑡ㔞ࡣ఩⨨ࡸ࿘Ἴᩘ࡟ࡼࡾ␗࡞ࡗ࡚࠸ࡿࡀ㸪᭱኱࡛ 20dB ⛬ᗘ࡟ࡶ㐩ࡍࡿࠋࡲࡓ㸪࿘Ἴᩘࡀ㧗ࡃ࡞ࡿ࡟ࡘ࠸࡚㸪ῶᑡ㔞ࡢ᭱

0
Ͳ5
Ͳ10
Ͳ15

Ỉᖹ᣺ືͲLEͲ⯒⿦ 䛒䜚䠄ᰂ䠅䞊↓䛧
Ͳ2016Hz኱್ࡀ኱ࡁࡃ㸪⯒⿦ࡢᙳ㡪ࢆཷࡅࡸࡍ࠸࡜ᛮࢃࢀࡿࠋ

31.5Hz1 㖄┤᣺ືࡣ㸪఩⨨ࡸ࿘Ἴᩘ࡟ࡼࡾs5dB ⛬ᗘࡢ⠊ᅖ

2

3

45

10



5᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]୍ᴫ࡟⯒⿦᭷ࡾࡢ᪉ࡀᑠࡉ࠸ࢃࡅ࡛ࡣ࡞࠸ࠋ᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]10Ỉᖹ᣺ືͲLEͲ⯒⿦ 䛒䜚䞊↓䛧
16Hz

31.5Hz63Hz125Hz

6789101112

఩⨨ [m]

࡛ࣞ࣋ࣝᕪࡀኚ໬ࡋ࡚࠸ࡿࠋỈᖹ᣺ືࡢሙྜ࡜␗࡞ࡾ

563HzͲ25125Hz0Ͳ5Ͳ100Ͳ5Ͳ10
Ͳ15㖄┤᣺ືͲLEͲ⯒⿦ 䛒䜚䠄ᰂ䠅䞊↓䛧
Ͳ20
16Hz

Ͳ15

31.5Hz63Hz125Hz

Ͳ25
1

Ͳ20

2

345

6789101112

఩⨨ [m]
Ͳ25
123456789

1011

ᅗ ᥎ィ⤖ᯝ ⯒⿦(ᰂ)࡜㏻ᖖࡢሙྜ࡜ࡢࣞ࣋ࣝᕪ

12఩⨨ [m]

10㖄┤᣺ືͲLEͲ⯒⿦ 䛒䜚䞊↓䛧5

᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]

100
Ͳ5
Ͳ10
Ͳ15
Ͳ20
16Hz

31.5Hz

63Hz

2

3

4

5

6

7

8

9

10

0
Ͳ5
Ͳ10
Ͳ15

Ỉᖹ᣺ືͲLEͲ⯒⿦ 䛒䜚䠄◳䠅䞊↓䛧
Ͳ20
16Hz

125Hz31.5Hz63Hz125Hz

Ͳ25

Ͳ25
1511

112

2

34

5

678

9

101112఩⨨ [m]఩⨨ [m]10᣺ືຍ㏿ᗘ䝺䝧䝹ᕪ [dB]ᅗ ᥎ィ⤖ᯝ ⯒⿦࠶ࡾ࡜↓ࡋࡢሙྜࡢࣞ࣋ࣝᕪ
 ⯒⿦ࡢ๛ᛶࢆኚ໬ࡉࡏࡓሙྜ ࢔ࢫࣇ࢓ࣝࢺ⯒⿦ࡢࣖࣥࢢ⋡ࢆ 1/2 ࡜ࡋࡓሙྜ࡜㸪2ಸ࡜ࡋࡓሙྜ࡟ࡘ࠸࡚ィ⟬ࢆ⾜ࡗࡓࠋ ࣖࣥࢢ⋡ࢆ 1/2 ࡜ࡋࡓሙྜ㸦ᰂ࡜⾲グ㸧࡜ඖࡢሙྜ࡜
ࡢࣞ࣋ࣝᕪࢆᅗ ࡟♧ࡍࠋỈᖹ᪉ྥ᣺ືࡣඖࡢሙྜࡼ

50
Ͳ5
Ͳ10
Ͳ15

㖄┤᣺ືͲLEͲ⯒⿦ 䛒䜚䠄ᰂ䠅䞊↓䛧

ࡾ 0㹼5dB ⛬ᗘ኱ࡁࡃ࡞ࡿഴྥࡀぢࡽࢀࡿࠋ୍᪉㸪㖄┤

Ͳ20᪉ྥ᣺ືࡣ࡯࡜ࢇ࡝ኚ໬ࡀ↓ࡃ-0.8㹼+0.3dB ⛬ᗘࡢᕪ

Ͳ25

16Hz
1

࡛࠶ࡗࡓࠋ

2

331.5Hz
45663Hz78125Hz
9101112఩⨨ [m]

 ࣖࣥࢢ⋡ࢆ 2 ಸ࡜ࡋࡓሙྜ㸦◳࡜⾲グ㸧࡜ࡢࣞ࣋ࣝ

ᅗ ᥎ィ⤖ᯝ ⯒⿦(◳)࡜㏻ᖖࡢሙྜ࡜ࡢࣞ࣋ࣝᕪ

ᕪࢆᅗ ࡟♧ࡍࠋỈᖹ᪉ྥ᣺ືࡣඖࡢሙྜࡼࡾᑠࡉࡃ࡞ࡿഴྥ࡛㸪᭱኱࡛-6dB ⛬ᗘࡢῶᑡ࡛࠶ࡿࠋ㖄┤᪉ྥ

55

東急建設技術研究所報No.41

 ௨ୖࡢᵝ࡟㸪⯒⿦ࡢ๛ᛶ㸦ࣖࣥࢢ⋡㸧ࡢኚ໬ࡣ㸪Ỉሙྜࡶ࠶ࡿᖹ᪉ྥ᣺ື࡟ᑡ࡞ࡃ࡜ࡶs5dB ⛬ᗘࡢᙳ㡪ࢆ୚࠼㸪㖄࣭⯒⿦ࡢᙳ㡪㔞ࡣ㸪఩⨨࣭࿘Ἴᩘࡸ⯒⿦ࡢ௙ᵝ㸦๛ᛶ㸧┤᪉ྥ᣺ື࡟ࡣࡑࢀ࡯࡝ࡢᙳ㡪ࢆ୚࠼࡞࠸⤖ᯝ࡛࠶ࡗ࡟ࡼࡾ」㞧࡟ኚ໬ࡍࡿࡓࠋ ௨ୖࡢࡼ࠺࡟㸪࢔ࢫࣇ࢓ࣝࢺ⯒⿦㠃࡟࠾࠸࡚ࡢ᣺ືᐃ⤖ᯝࡣ㸪㠀⯒⿦㠃࡛ࡢ ࡲ࡜ࡵ࡜⪃ᐹᐃ⤖ᯝ࡜ᕪࡀ࠶ࡿࡢ࡛㸪ࡑࡢ⤖ᯝࢆ⏝࠸࡚ᅛయ㡢ᑐ⟇࡞࡝ࡢ᳨ウࢆ⾜࠺ሙྜࡣᐇ⌧ሙ࡟࠾ࡅࡿ࢔ࢫࣇ࢓ࣝࢺ⯒⿦ࡢᙳ㡪ࡢὀពࡀᚲせ࡛࠶ࡿࠋ≉࡟㸪Ỉᖹ᪉ྥ᣺ືࡣᩘࣛࣥࢡ௨ᐃ౛ࢆୖࡶᑠࡉ࠸♧ࡋ㸪ࡉࡽ࡟᭷㝈せ⣲ἲ࡟ࡼࡿᩘ್ゎᯒࢆ⏝࠸࡚⯒⿦ᐃ⤖ᯝ࡜࡞ࡗ࡚࠸ࡿྍ⬟ᛶࡀ࠶ࡿࠋࡢᙳ㡪ࢆ᳨ウࡋࡓࠋ⯒⿦ࡢᙳ㡪ࡣ㸪⯒⿦㠃࡜㠀⯒⿦㠃ࡲࡓ㸪఩⨨࣭࿘Ἴᩘࡸ⯒⿦ࡢ௙ᵝ࡟ࡼࡾ⯒⿦ࡢᙳ㡪࡛ࡢ᣺ືࢆẚ㍑᳨ウࡋ࡚ᐃ㔞ⓗ࡟᳨ウࡋࡓࠋࡑࡢ⤖ᯝ㸪ࡣ」㞧࡟ኚ໬ࡍࡿࡢ࡛㸪⯒⿦ࡢᙳ㡪ࢆ༢⣧࡞᪉ἲ࡛⿵௨ୗࡀࢃ࠿ࡗࡓࠋṇࡍࡿࡇ࡜ࡣ㞴ࡋ࠸ࠋࢺࣥࢿࣝࡸᆅ┙ࢆ㐺ษ࡟ࣔࢹ࣭ࣝᆅ⾲㠃࡛ࡢ᣺ື࡟ᑐࡋ㸪⯒⿦ࡣୗグࡢࡼ࠺࡞↓ど࡛໬ࡋಶูࡢᩜᆅ࡟࠾ࡅࡿ⯒⿦ࡢᙳ㡪ࢆᩘ್ィ⟬࡛᥎ィࡁ࡞࠸኱ࡁࡉࡢᙳ㡪ࢆ୚࠼ࡿࡍࡿᡭἲࡀ᭷ᮃ࡛࠶ࡿ࡜ᛮࢃࢀࡿࠋ࡞࠾㸪ᆅ୰࡛ࡢ᣺ື࣭Ỉᖹ᪉ྥ᣺ືࡣ㸪㖄┤᪉ྥ᣺ື࡟ẚ࡭㸪⯒⿦ࡢᙳ㡪ᐃࡀྍ⬟࡛࠶ࢀࡤ⯒⿦ࡢᙳ㡪ࢆ኱ࡁࡃཷࡅ㸪ࣞ࣋ࣝࡀῶᑡࡍࡿഴྥ࡛࠶ࡿࠋῶᑡ㔞ࢆ㑊ࡅࡽࢀࡿྍ⬟ᛶࡀ࠶ࡿࡀ㸪࡝ࡢ⛬ᗘࡢ῝ࡉ࡛ࡢࡣ 20dB ࡟ࡶ㐩ࡍࡿሙྜࡀ࠶ࡿࠋ࿘Ἴᩘࡀ㧗ࡃ࡞ࡿ࡟ࡘᐃࡀᚲせ࠿㸪ࡑࡢࡓࡵࡢ᣺ືࢀᙳ㡪ࡀ኱ࡁࡃ࡞ࡿࡼ࠺࡛࠶ࡿࠋࡲࡓ㸪⯒⿦ࡢ๛ᛶࡢἲ࡞࡝௒ᚋࡢ᳨ウ࣭㛤Ⓨࢆせࡍࡿࠋᐃᶵᮦࢆྵࡵࡓᐃᡭ௒ᚋࡶᘬࡁ⥆ࡁ㸪ᩘ್ィ⟬ࢆ฼⏝ࡋ࡞ࡀࡽ㸪ᅛయ㡢ኚ໬ࡢᙳ㡪ࢆཷࡅࡸࡍ࠸࣭㖄┤᪉ྥ᣺ືࡶ㸪⯒⿦ࡢᙳ㡪ࢆཷࡅࡿࡀ㸪ࡑࡢᙳ㡪ఏᦙࡢࡣỈᖹ᪉ྥ᣺ືࡼࡾᑠࡉࡃs5dB ⛬ᗘ࡛࠶ࡗࡓࠋ఩࠸ࡃࠋᐃᡭἲ࠾ࡼࡧணᡭἲ࡟㛵ࡍࡿ㛤Ⓨࢆ⾜ࡗ࡚⨨࣭࿘Ἴᩘ࡟ࡼࡾ㸪ࣞ࣋ࣝࡀῶᑡࡍࡿሙྜࡶቑຍࡍࡿㅰ ㎡ ⌧ሙ᣺ືᐃ࡟༠ຊࢆ㡬࠸ࡓᘓ⠏ᮏ㒊ᢏ⾡㒊 ᣺ືᢏ⾡ࢢ࣮ࣝࣉ࠾ࡼࡧ㡢㡪࣭㟁☢⎔ቃࢢ࣮ࣝࣉ㸦ᙜ᫬㸧ࡢྛ఩࡟ឤㅰ࠸ࡓࡋࡲࡍࠋཧ⪃ᩥ⊩1)᪥ᮏᘓ⠏Ꮫ఍⦅ : ⎔ቃ᣺ື࣭ᅛయ㡢ࡢᐃᢏ⾡࣐ࢽࣗ࢔ࣝ, pp93-95, ࣮࣒࢜♫, 1999 ᖺ2)℩ᡞᒣ ᫓㍤ , ㇏ᔱ Ꮫ : 㕲㐨ᅛయ㡢ࡢ⌧ሙᐇ࡟⏝࠸ࡿᆅ┙㠃᣺ືᐃἲࡢᐇ㦂ⓗ᳨ウ, ᪥ᮏᘓ⠏Ꮫ఍Ꮫ⾡ㅮ₇᱾ᴫ㞟, pp.167-168, 2014 ᖺ 9 ᭶3)℩ᡞᒣ ᫓㍤ , ㇏ᔱ Ꮫ : 㕲㐨ࢺࣥࢿࣝ࠿ࡽⓎ⏕ࡍࡿᅛయ㡢㡿ᇦࡢ᣺ືࡢᩘ್ィ⟬࡟ࡼࡿ᳨ウ, ᮾᛴᘓタᢏ⾡◊✲ᡤሗ, No40, pp5760, 2014 ᖺNUMERICAL ANALYSIS AND MEASUREMENT EXAMPLES OF THE EFFECTS OF PAVEMENTFOR VIBRATION MEASUREMENT IN GROUND-BORN SOUND
H. Setoyama
Vibration measurement on the surface of site is necessary to consider the measures for ground-born sound of a railway. However
the surface of the site has often been paved, which is assumed to significantly effect vibration measurement on the site. This paper
shows some results of numerical analysis and measurement examples of the effects of pavement for vibration measurement.
The main results are as follows: Horizontal vibration is suppressed as much as 20 dB, and susceptible to the rigidity of thepavement. The effects to vertical vibration is smaller, that is about s5dB. The effect quantity differs depending on the frequency, theposition of the measurement and the specification of pavement.

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