ᮾᛴᘓタᢏ⾡◊✲ᡤሗ No.40
東急建設技術研究所報 No.40

U.D.C 699.844
U.D.C 699.844

㜵᣺ᆅ୰ቨࢆᵓᡂࡍࡿ㜵᣺ᮦࡢ
防振地中壁を構成する防振材の᣺ື㐽᩿ᛶ⬟ホ౯᪉ἲ࡟㛵ࡍࡿ୍⪃ᐹ
振動遮断性能評価方法に関する一考察
貝瀬㸨㈅℩ ᬛ᫛㸨 ஭ୖ ㅍ＊智昭＊井上諭せ ⣙㸸㜵᣺ᆅ୰ቨ䜢ᵓᡂ䛩䜛㜵᣺ᮦ䛾᣺ື㐽᩿ᛶ⬟ࡣ㸪ᘓ≀㌣య᪋ᕤ๓ࡢᆅ୰ቨ㠃ࢆධຊ࡜ࡋ㸪᪋ᕤᚋࡢ㌣యቨ㠃ࢆฟຊ࡜ࡋࡓ᣺ືຍ㏿ᗘࣞ࣋ࣝᕪ࡟ࡼࡗ࡚ホ౯ࡍࡿ᪉ἲ㸦ホ౯᪉ἲ 1㸧ࡀ࠶ࡿࠋࡇࡇ࡛᪤ ◊✲ 7)࡛ࡣ㸪ᘓ≀㌣య᪋ᕤᚋ࡟ᆅ୰ቨ㠃࡜㌣యቨ㠃ࡢ᣺ື
ຍ㏿ᗘࣞ࣋ࣝᕪ࡟ࡼࡗ࡚ホ౯ࡋࡓ᪉ἲ㸦ホ౯᪉ἲ 2㸧࡜ẚ㍑ࡋ࡚㸪ホ౯᪉ἲ 1 ࡛ࡣ㐣኱࡟ホ౯ࡋ࡚ࡋࡲ࠺ྍ⬟ᛶࡀ⌮ㄽィ⟬࡟ࡼࡿ᳨ウ࠿ࡽᣦ᦬ࡉࢀ࡚࠸ࡿࠋ
ࡑࡇ࡛㸪ᮏ✏࡛ࡣ㕲㐨࡟㏆᥋ࡋࡓᘓ≀࡟㜵᣺ᆅ୰ቨࢆ᥇⏝ࡋࡓ஦౛ࢆᑐ㇟࡟ࡋ࡚㸪㕲㐨㉮⾜᫬ࡢ᣺ືィ
1 ࠾ࡼࡧ 2 ࡼࡾồࡵࡓ᣺ື㐽᩿ᛶ⬟ࡢẚ㍑⤖ᯝࢆሗ࿌ࡍࡿࡶࡢ࡛࠶ࡿࠋᐇࢆᐇ᪋ࡋ㸪ホ౯᪉ἲ⤖ᯝ࠿ࡽ㸪᪤ ◊✲ࡢᣦ᦬࡜ྠᵝ࡟㸪ホ౯᪉ἲ 1 ࡢ᪉ࡀ㸪ホ౯᪉ἲ 2 ࡼࡾࡶ᣺ື㐽᩿ᛶ⬟ࡀ㐣኱࡟ホ౯ࡉࢀࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ
㺕㺎㺺㺎㺢㺼㸸  㜵᣺ᆅ୰ቨ㸪㕲㐨᣺ື㸪ࢯ࢖ࣝࢭ࣓ࣥࢺቨ㸪᣺ື㐽᩿ᛶ⬟㸪㜵᣺ᮦ㸪ᅛయఏᦙ㡢┠ ḟ㸸  ࡣࡌࡵ࡟                      ㄪᰝ⤖ᯝ࣭⪃ᐹ     ㄪᰝᑐ㇟ᘓ≀                    ࡲ࡜ࡵ     ㄪᰝ᪉ἲ                   ࡣࡌࡵ࡟⬟㸦௨ᚋ㸪᪉ἲ1࡜グࡍ㸧ࡣ㸪ホ౯᪉ἲ2࡟ࡼࡾホ౯ࡋࡓ᣺㕲㐨࡟㏆᥋ࡍࡿᘓ≀࡛ࡣ㸪ิ㌴㉮⾜᫬࡟㌶㐨䜘䜚ఏᦙື㐽᩿ᛶ⬟㸦௨ᚋ㸪᪉ἲ2࡜グࡍ㸧࠾ࡼࡧᤄධᦆኻ࡜ẚ㍑

䛩䜛᣺ື䛜ᆅ┙䜢ఏ䜟䜚䠈ᘓ≀ෆ䛻ධຊ䛥䜜䠈䛭䛾᣺ື䛜ᒃࡋ࡚㐣኱࡟ホ౯ࡉࢀࡿᜍࢀࡀ࠶ࡿࡇ࡜ࢆᣦ᦬ࡋ࡚࠸ࡿࠋᐊෆ䛷ᅛయఏᦙ㡢䛸䛧䛶Ⓨ⏕䛩䜛䛣䛸䛜䛒䜛䚹䛭䛾ᘓ≀䛻ධࡑࡇ࡛㸪ࡇࡢᐇ⌧㇟ࢆ☜ㄆࡋ㸪᪉ἲ 1 ࡟ࡼࡾ㜵᣺ᮦࡢ᣺ຊ䛥䜜䜛᣺ື䠄ᅛయఏᦙ㡢䠅䜢పῶ䛩䜛ᑐ⟇䛾୍䛴䛸䛧䛶㜵ື㐽᩿ᛶ⬟ࢆホ౯ࡍࡿࡇ࡜ࡀྍ⬟࠿ྰ࠿ࢆุ᩿ࡍࡿࡇ࡜ࢆ᣺ᮦ䜢ᆅ୰ቨ䛸ᘓ≀㌣య䛾㛫䛻ᤄධ䛧䛯㜵᣺䝍䜲䝥ᆅ୰ቨ┠ⓗ࡜ࡋ㸪㜵᣺ᆅ୰ቨࢆ᥇⏝ࡋࡓᘓ≀࡟࠾࠸࡚ิ㌴㉮⾜᫬䠄௨ᚋ䠈㜵᣺ᆅ୰ቨ䛸グ䛩䠅䜢᪋ᕤ䛩䜛䛣䛸䛜䛒䜛 㻝䠅㻞㻕ࠋࡑࡢ࡟࠾ࡅࡿᘓ≀㌣య᪋ᕤ๓ᚋࡢᆅ୰ቨ㠃࠾ࡼࡧᘓ≀ᆅୗእቨ㜵᣺ᮦ࡟ࡣ㜵᣺ࢦ࣒ࡸྜᡂᶞ⬡ᮦ➼ࡀ౑⏝ࡉࢀࡿࡀ㸪ࡑ㠃ࡑࢀࡒࢀ࡟ఏᦙࡍࡿ᣺ື㸦ຍ㏿ᗘᛂ⟅㸧ࢆィ ࡋࡓࠋࢀࡽࡢ᣺ື㐽᩿ᛶ⬟ࡣホ౯᪉ἲࡀ☜❧ࡉࢀ࡚࠾ࡽࡎ㸪᫂ᮏ✏࡛ࡣ㸪ᐇ⌧ሙ࡛ィ ࡋࡓ᣺ືຍ㏿ᗘࣞ࣋ࣝ⤖ᯝ࠿☜࡟࡞ࡗ࡚࠸ࡿ࡜ࡣゝ࠸㞴࠸ࠋ㜵᣺ᮦࡢ᣺ື㐽᩿ᛶ⬟ࡢホ౯᪉ἲ3)࡟ࡣ㸪ᘓ≀ᘓタ᫬࡟ᆅ୰ቨ࡜ᘓ≀ࡢ㛫࡟㜵᣺ᮦࢆᤄධࡋࡓሙྜ࡜ࡋ࡞࠸ሙ
ྜࡑࢀࡒࢀࡢᘓ≀㌣య㠃࡟ఏᦙࡍࡿ᣺ືࡢ᣺ᖜẚࢆ᣺ື㐽᩿ᛶ⬟㸦ᤄධᦆኻ㸧࡜ࡋ࡚ホ౯ࡍࡿ᪉ἲࡀ࠶ࡿࠋࡲࡓ㸪஦౛4) 5)ࡢࡼ࠺࡟ᘓ≀㌣య᪋ᕤᚋ࡟ᆅ୰ቨ㠃࡜ᘓ≀㌣య㠃ࢆྠ᫬ィ ࡋ㸪ࡑࢀࡽࡢ᣺ືࡢ᣺ᖜࣞ࣋ࣝᕪࢆ᣺
ືື㐽᩿ᛶ⬟࡜ࡋ࡚ホ౯ࡍࡿ᪉ἲ㸦௨ᚋ㸪ホ౯᪉ἲ2࡜グࡍ㸧ࡀ࠶ࡿࠋࡑࡢ࠺ࡕࡢ๓⪅ࡣ㸪ᐇ⌧ሙ࡛ࡢィ ࡀ࡯ࡰ୙ྍ⬟࡛࠶ࡿ6)ࠋࡑࡢࡓࡵ㸪ᐇ⌧ሙ࡛ホ౯ྍ⬟࡞ホ౯᪉ἲ2࡟ࡼࡾồࡵࡿࡇ࡜ࡀᮃࡲࡋ࠸࡜⪃࠼ࡽࢀࡿࡀ㸪ࡑࢀࡶᆅ୰ቨ㠃ࡢධຊ᣺ືࢆィ ࡍࡿ㝿࡟᣺ືࢭࣥࢧ࣮ࢆᇙタࡍࡿᚲせࡀ࠶ࡿࡓࡵ㸪ᐜ࡛᫆ࡣ࡞࠸ࠋࡑࡇ࡛㸪ᅗ1ࡢࡼ࠺࡟ᘓ≀㌣య᪋ᕤ๓ࡢᆅ୰ቨ㠃࡜᪋ᕤᚋࡢ㌣య㠃ࡑࢀࡒࢀࡢ᣺ືࢆィ ࡋ㸪ࡑࡢࣞ࣋ࣝᕪࢆ᣺ື㐽᩿ᛶ⬟࡜ࡋ࡚ホ౯ࡍࡿ᪉ἲ㸦௨ᚋ㸪ホ౯᪉ἲ1࡜グࡍ㸧ࢆ⾜࠺ࡇ࡜ࡀ࠶ࡿࠋࡇࡢ᪉ἲ࡟ࡘ࠸࡚ቑ⏣7)ࡣከᒙ፹㉁ࣔࢹࣝࢆ⏝࠸ࡓ⌮ᅗ 㜵᣺ᆅ୰ቨࢆᵓᡂࡍࡿ㜵᣺ᮦࡢ᣺ື㐽᩿ᛶ⬟ࡢㄽィ⟬ࢆᐇ᪋ࡋ㸪ホ౯᪉ἲ1࡟ࡼࡾホ౯ࡋࡓ᣺ື㐽᩿ᛶホ౯᪉ἲ  ࠾ࡼࡧホ౯᪉ἲ  ࡢᴫᛕᅗ * 建築本部 技術部 音響・電磁環境 Gᘓ⠏ᮏ㒊ᢏ⾡㒊㡢㡪࣭㟁☢⎔ቃ *  5353

東急建設技術研究所報 No.40

⾲ 1 㜵᣺ᮦࡢ௙ᵝࡽ᪉ἲ 1 ࡜᪉ἲ 2 ࢆẚ㍑ࡋࡓ⤖ᯝࢆ㏙࡭ࡿࠋ ㄪᰝᑐ㇟ᘓ≀㜵᣺ᮦཌࡉ᪋ᕤ⠊ᅖࣂࢿᐃᩘ(N/m/m2)(ⓎἻಸ⋡)(ੈ)(ᅗ 1 ཧ↷)㟼ⓗືⓗ50

7.8×106

2.4×10750

2.7×107

7.4×107ㄪᰝᑐ㇟ᘓ≀࡜㕲㐨㌶㐨ࡢ఩⨨㛵ಀ࠾ࡼࡧ㜵᣺ᮦࡢⓎἻ࣏ࣜ᪋ᕤ⠊ᅖࢆᅗ2࡟♧ࡍࠋㄪᰝᑐ㇟ᘓ≀ࡣ㸪ᆅୖ6㝵㸪ᆅୗ࢚ࢳࣞࣥ

2 㝵ᘓࡢ㕲➽ࢥࣥࢡ࣮ࣜࢺ㐀࡛࠶ࡾ㸪ᆅ୰ቨࡣࢯ࢖ࣝࢭ

(26 ಸ)

࣓ࣥࢺቨࡀ᥇⏝ࡉࢀ࡚࠸ࡿࠋࡲࡓ㸪㕲㐨㌶㐨࡟㏆᥋ࡋ࡚

ⓎἻ࣏ࣜ࠸ࡿࡇ࡜࠿ࡽ㕲㐨᣺ື䠄ᅛయఏᦙ㡢䠅䛾ᙳ㡪䛜ᠱᛕ䛥䜜䛯䚹ࣉࣟࣆࣞ䛭䛾䛯䜑䠈㜵᣺ᑐ⟇࡜ࡋ࡚ᆅ୰ቨ䛻50mmཌ䛾㜵᣺ᮦ䠄Ⓨ

ࣥ(30 ಸ)◙ᮦ䠅䛜ᅗ2䛻♧䛩఩⨨䛻᪋ᕤ䛧䛯䚹㜵᣺ᮦࡢ௙ᵝࢆ⾲1࡟♧ࡍࠋࡉࡽ࡟ᘓ≀ᆅୗእቨ㸦ᆅ୰ᱱྵࡴ㸧᪋ᕤ᫬࡟⏝࠸ࡿࢭࣃ࣮ࣞࢱ㔠≀࠿ࡽࡢ᣺ືఏᦙࢆ㜵Ṇࡍࡿࡓࡵ㸪㜵᣺ᮦ㸦ᮦ㉁㸸࣏࢚ࣜࢳࣞࣥ㸧ࢆࡑࡢ㔠≀࡟ᕳࡁࡘࡅࡓ㜵᣺ࢱ࢖ࣉࢭࣃ࣮ࣞࢱࢆ᥇⏝ࡋ࡚࠸ࡿࠋ‣‫••‫‬ᆅ┙䜰 䞁䜹䞊 ㄪᰝ᪉ἲ䜰䞁䜹䞊⭡㉳࢔࣮ࣥ࢝⭡㉳․•••ᮏㄪᰝࡣᘓ≀㌣య᪋ᕤ๓ࡢᆅ┙᥀๐ᕤ஦᏶஢ᚋ㸦௨‫• ‫‬ᚋ㸪᪋ᕤ๓࡜グࡍ㸧࠾ࡼࡧᘓ≀㌣య᪋ᕤ᏶஢ᚋ㸦௨ᚋ㸪᪋ᕤᚋ࡜グࡍ㸧࡟ᐇ᪋ࡋࡓࠋ࡞࠾㸪᪋ᕤ๓ࡢㄪᰝࡣᆅ
ᐃⅬࡢ⥺㊰┤஺᪉ྥ࡟ᅽ㟁ᆺ᣺ືຍ㏿

P01‥‥••ᐃࡣ㸪ྛ…․ •୰ቨ࡟ᆅ┙࢔࣮ࣥ࢝ࡀ᪋ᕤࡉࢀࡓ≧ែ࡛ᐇ᪋ࡋࡓࠋ

ᗘࣆࢵࢡ࢔ࢵࣉタ⨨ࡋ㸪ิ㌴㏻㐣᫬ࡢ᣺ືຍ㏿ᗘᛂ⟅ࢆࢹ࣮ࢱࣞࢥ࣮ࢲ࡟཰㘓ࡋࡓࠋᑐ㇟ิ㌴ࡣୖୗ⥺ࡑࢀ
ࡒࢀ 10 ᮏ࡜ࡋࡓࠋ᪋ᕤ๓ᚋࡢ
ࢀ♧ࡍࠋᐃⅬࢆᅗ 3㸪4 ࡟ࡑࢀࡒͤ఩⨨࡜ࡋ㸪᪋ᕤᚋ࡛ࡣᆅ୰ቨࡢ H ᙧ㗰㠃 P02㸪ᆅୗእቨᐃⅬᐃ᫬ࡣᆅ┙࢔࣮ࣥ࢝᪋ᕤ
ࡢᘓ≀እഃ㸦ᆅ୰ቨഃ㸧P03 ࠾ࡼࡧᘓ≀ෆഃ P04 ࡢ఩⨨࡜ࡋࡓࠋ࡞࠾㸪䠖‪‪••

ᐃⅬࡣ᪋ᕤ๓࡛ࡣᆅ୰ቨࡢ H ᙧ㗰㠃 P01 ࡢ

ᐃⅬ P02 ࠾ࡼࡧ P03 ࡛ࡣ㸪᣺ືຍ㏿

ᅗ 3 ᘓ≀㌣య᪋ᕤ๓ࡢ

ᐃⅬ

ᅗ 4 ᘓ≀㌣య᪋ᕤᚋࡢᐃⅬᗘࣆࢵࢡ࢔ࢵࣉࢆᅗ 5㸪6 ࡟♧ࡍ᪉ἲ࡟ࡼࡾタ⨨ࡋࡓࠋゎᯒ್ࡣ 1/3 ࢜ࢡࢱ࣮ࣈࣂࣥࢻ㸦8㹼315Hz ᖏᇦ㸧ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝ᭱኱್㸦ື≉ᛶ fast㸧࡜ࡋࡓࠋゎᯒࡣ㸪
ิ㌴㏻㐣᫬࡟࠾࠸࡚ S/N ẚࡀ༑ศ☜ಖࡉࢀࡓ⠊ᅖࢆᑐ㇟࡜ࡋࡓࠋྛ

ᐃⅬࡢホ౯್ࡣ㸪ィᑐ㇟࡜ࡋࡓิ㌴ࡢୖୗ⥺ࡑࢀࡒࢀ 10 ᮏศࡢ࢚ࢿࣝࢠ࣮ᖹᆒ್࡜ࡋࡓࠋྛホ౯᪉ἲ࡟ࡼࡿ᣺ື㐽᩿ᛶ⬟ࡣ㸪᪉ἲ 1 ࡛ࡣ᪋ᕤ๓ࡢ
ᐃⅬ P01 ࡜᪋ᕤᚋࡢ

ᐃⅬ P04 ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝᅗ 2 ᘓ≀࡜㕲㐨㌶㐨ࡢ఩⨨㛵ಀ࡜㜵᣺ᮦࡢ᪋ᕤ⠊ᅖ



54

東急建設技術研究所報 No.40

ࡢᕪ࡜ࡋ㸪᪉ἲ 2 ࡛ࡣ㸪᪋ᕤᚋ࡟ྠ᫬ィࡋࡓ

ᐃⅬP02 ࡜ P03 ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝࡢᕪ࡜ࡋࡓࠋ ㄪᰝ⤖ᯝ࣭⪃ᐹ
᪉ἲ 1 ࠾ࡼࡧ᪉ἲ 2 ࡢ᣺ື㐽᩿ᛶ⬟ࢆᅗ 7 ࡟♧ࡍࠋ
ᅗ 7 ࢆぢࡿ࡜㸪᪉ἲ 1 ࡣ㸪ୖୗ⥺࡜ࡶ࡟ 8~40Hz ᖏᇦ࡛ 12~25dB㸪50~125Hz ᖏᇦ࡛ 0㹼8dB ⛬ᗘ࡛࠶ࡾ㸪࿘Ἴᩘࡀ㧗ࡃ࡞ࡿ࡟ࡘࢀ್࡚ࡀᑠࡉࡃ࡞ࡿഴྥࡀぢࡽࢀࡓࠋ୍᪉㸪᪉ἲ 2 ࡛ࡣ㸪8~125Hz ᖏᇦ࡛ 1~5dB ⛬ᗘ࡛࠶ࡾ㸪࿘Ἴᩘࡀ㧗ࡃ࡞ࡿ࡯࡝್ࡀ኱ࡁࡃ࡞ࡿഴྥ࡛࠶ࡗࡓࠋ
୧⪅ࢆẚ㍑ࡍࡿ࡜ 8㹼40Hz ᖏᇦ࡛ 10dB㹼20dB ⛬ᗘ㸪50

ᅗ 5 ㌣య᪋ᕤᚋࡢᆅ୰ቨ㠃

㹼125Hz ᖏᇦ࡛ࡣ 2dB㹼5dB ⛬ᗘࡢᕪ␗ࡀぢࡽࢀࡓࠋ㸦ᐃⅬ P02㸧࡟タ⨨ࡋࡓ᣺ືࣆࢵࢡ࢔ࢵࣉタ⨨᪉ἲࡇࡇ࡛㸪᣺ືධຊ※࡛࠶ࡿᆅ୰ቨ㠃ࡢ᪋ᕤ๓ᚋ࡟ఏᅗ 6 ㌣య᪋ᕤᚋࡢᆅୗእቨእ㒊ഃ㸦

ᐃⅬ P03㸧࡟タ⨨ࡋࡓ᣺ືࣆࢵࢡ࢔ࢵࣉタ⨨᪉ἲᦙࡍࡿ᣺ື≉ᛶࡢኚ໬ࢆᢕᥱࡍࡿࡓࡵ㸪᪋ᕤ๓ᚋࡢᆅ୰ቨ㠃ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝ᭱኱್ࡢᖹᆒ್ࢆᅗ 8 ࡟♧ࡍࠋࡲࡓ㸪ᆅୗእቨࡢᘓ≀እ㒊ഃ㸦ഃ(30ᐃⅬ P03㸧࡜ෆ㒊ᐃⅬ P04)ࡢᕪ␗ࢆ☜ㄆࡍࡿࡓࡵ㸪ࡑࢀࡒࢀࡢ

ホ౯᪉ἲ1(ᑐ㇟ิ㌴䠖ୖ䜚䠅ᐃホ౯᪉ἲ1(ᑐ㇟ิ㌴䠖ୗ䜚䠅
25Ⅼ࡟࠾ࡅࡿ᣺ືຍ㏿ᗘࣞ࣋ࣝ᭱኱್ࡢᖹᆒ್ࢆᅗ 9 ࡟♧

ホ౯᪉ἲ2(ᑐ㇟ิ㌴䠖ୖ䜚䠅ホ౯᪉ἲ2(ᑐ㇟ิ㌴䠖ୗ䜚䠅ࡍࠋ᣺ື㐽᩿ᛶ⬟䠄dB䠅

ᅗ 8 ࡼࡾ᪋ᕤᚋࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝࡣ᪋ᕤ๓࡜ẚ㍑ࡋ
࡚ୖୗ⥺࡜ࡶ࡟ 8㹼40Hz ᖏᇦ࡛ࡣ 10~20dB ⛬ᗘ㸪
50~80Hz ᖏᇦ࡛ࡣ 2dB ⛬ᗘᑠࡉ࠸⤖ᯝ࡛࠶ࡗࡓࠋ
ᅗ 9 ࡼࡾᆅୗእቨࡢᘓ≀እ㒊ഃ࡜ෆ㒊ഃࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝࡣ㸪63,80Hz ᖏᇦ࡛ 2dB ⛬ᗘࡢⱝᖸࡢᕪ␗ࡀぢࡽ

201510ࢀࡿࡀ㸪ࡑࢀ௨እࡢ࿘Ἴᩘᖏ࡛ࡣ࡯ࡰྠ⛬ᗘ࡛࠶ࡗࡓࠋࡇࢀࡽࡢ⤖ᯝࡼࡾ㸪᣺ືධຊ※࡛࠶ࡿᆅ୰ቨࡢ᣺ື
ࡣ㸪᪋ᕤᚋ࡟࠾࠸࡚ 40Hz ᖏᇦ௨ୗ࡛኱ࡁࡃపῶࡍࡿࡇ5࡜ࡀศ࠿ࡗࡓࠋࡲࡓ㸪ᆅୗእቨࡢᘓ≀እ㒊ഃ࡜ᘓ≀ഃࡢ㠃࡟ఏᦙࡍࡿ᣺ື≉ᛶࡢኚ໬ࡣ 63~80 Hz ௜㏆࡛ⱝᖸ

0ቑຍࡍࡿࡶࡢࡢ㸪ᑠࡉ࠸ࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋࡼࡗ࡚㸪

8

16

31.5

63

125

250

1/3䜸䜽䝍䞊䝤䝞䞁䝗୰ᚰ࿘Ἴᩘ䠄䠤䡖䠅

ᅗ 7 ࡟♧ࡋࡓᕪ␗ࡀ⏕ࡌࡓ୺࡞せᅉࡣ᪋ᕤ๓ᚋࡢᆅ୰ቨ

ᅗ 7 ホ౯᪉ἲ 1,2 ࡟ࡼࡾホ౯ࡋࡓ᣺ື㐽᩿ᛶ⬟࡟ఏᦙࡍࡿ᣺ື≉ᛶ࡟ᕪ࡛࠶ࡿࡇ࡜ࡀ᫂ࡽ࠿࡜࡞ࡗࡓࠋ
ࡇࢀࡣ㸪᪋ᕤ๓ᚋࡢ᣺ືఏᦙ㐣⛬࡟࠾࠸࡚፹㉁ࡀ᪋ᕤ
๓࡛ࡣ㸪ᆅ୰ቨ࠿ࡽ✵Ẽ࡟᣺ືࡀఏᦙࡍࡿࡢ࡟ᑐࡋ࡚㸪᪋ᕤᚋ࡛ࡣ㸪ᆅ୰ቨ࠿ࡽ㜵᣺ᮦ࡟ఏᦙࡍࡿࡇ࡜࠿ࡽ㸪ࡑࢀࡒࢀࡢ፹㉁㛫ࡢἼື࢖ࣥࣆ࣮ࢲࣥࢫ㸦ᐦᗘఏᦙ
㏿ᗘ㸧ẚࡀ␗࡞ࡿࡇ࡜ࡀ⪃࠼ࡽࢀࡿࠋࡲࡓ㸪ᘓ≀ࡀᘓタࡉࢀࡓࡇ࡜࡟ࡼࡾ㸪㜵᣺ᮦࡀᆅ୰ቨ࡟ᐦ╔ࡋ㸪ᆅ୰ᶆ‽೫ᕪቨࡢ᣺ືࢆᢚไࡍࡿస⏝㸦ࢲࣥࣆࣥࢢຠᯝ㸧ࡀ⏕ࡌ㸪ᖹᆒ್ࡉࡽ࡟᪋ᕤ๓ࡢᆅ୰ቨ࡟ఏᦙࡋ࡚࠸ࡓ⾲㠃Ἴࡀ㐽᩿ࡉᶆ‽೫ᕪࢀࡓࡓࡵ࡜᥎ᐹࡉࢀࡿࠋ
௨ୖࡢ⤖ᯝࡼࡾ㸪᪉ἲ 1 ࡣ㸪㜵᣺ᆅ୰ቨࢆᵓᡂࡍࡿ㜵᣺ᮦ࡟ࡼࡿ᣺ື㐽᩿ᛶ⬟௨እ࡟㸪ᘓ≀ᘓタ࡟ࡼࡿ⏕ࡌࡿ᣺ືపῶせᅉࡢᙳ㡪ࡶྵࡵ࡚ホ౯ࡋ࡚࠸ࡿࡓࡵ㸪᪉
ἲ 2 ࡜ẚ㍑ࡋ࡚㐣኱࡟ホ౯ࡉࢀࡿࡇ࡜ࡀ☜ㄆࡉࢀࡓࠋ
 ࡲ࡜ࡵ
ᮏ✏࡛ࡣ㸪ᐇ⌧ሙ࡟࠾ࡅࡿᘓ≀㌣య᪋ᕤ๓ᚋࡢᆅ୰
ቨ࠾ࡼࡧᆅୗእቨ࡟࡚

ᐃࡋࡓ᣺ືຍ㏿ᗘࣞ࣋ࣝ⤖ᯝ

ᅗ 8 ᘓ≀㌣య᪋ᕤ๓ᚋࡢᆅ୰ቨ㠃㸦࠿ࡽ᪉ἲ 1 ࠾ࡼࡧ᪉ἲ 2 ࢆẚ㍑ࡋࡓ⤖ᯝࢆ♧ࡋࡓࠋ

ᐃⅬ 3 ࡜3㸧ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝ᭱኱್ࡢᖹᆒ್

55

東急建設技術研究所報 No.4070

ࡑࡢ⤖ᯝ࠿ࡽ㸪௨ୗࡢ㸦1㸧㹼㸦3㸧ࡢ▱ぢࢆᚓࡓࠋ(1) ቑ⏣  ࡢ▱ぢ࡜ྠᵝ࡟ᐇ⌧ሙ࡟࠾࠸࡚ࡶ᪉ἲ 1 ࡀ㸪ᶆ‽೫ᕪ
60

᪉ἲ 2 ࡜ẚ㍑ࡋ࡚㐣኱࡟ホ౯ࡉࢀࡿࡇ࡜ࡀ☜ㄆࡉࢀᖹᆒ್ࡓࠋᶆ‽೫ᕪ
50

᣺ືຍ㏿ᗘ䝺䝧䝹䠄dB䠅(2) ᪉ἲ 1 ࡀ㐣኱ホ౯࡜࡞ࡗࡓཎᅉ࡜ࡋ࡚㸪ධຊഃ࡟࠶
ࡓࡿᘓ≀ᘓタ๓ᚋࡢᆅ୰ቨ㠃ࡢ᣺ື≉ᛶ࡟ᕪ␗ࡀ⏕ࡌࡓࡓࡵ࡛࠶ࡿࡇ࡜ࡀศ࠿ࡗࡓࠋ
(3) ᪉ἲ 1 ࡛ࡣ㸪㜵᣺ᆅ୰ቨࢆᵓᡂࡍࡿ㜵᣺ᮦࡢ᣺ື㐽᩿ᛶ⬟ࢆホ౯ࡍࡿࡇ࡜ࡀ㞴ࡋ࠸ࡇ࡜ࡀ᫂ࡽ࠿࡜࡞
ࡗࡓࠋ௒ᚋ㸪ᮏ✏࡛ゎ᫂ࡍࡿࡇ࡜ࡀ࡛ࡁ࡞࠿ࡗࡓᘓ≀ᘓタ40

30

20

ᘓ≀ᘓタᚋ䛾ᆅୗእቨෆഃ䠄ୖ䜚䠅๓ᚋࡢᆅ୰ቨ㠃࡟ఏᦙࡍࡿ᣺ື࡟ᕪ␗ࡀ⏕ࡌࡓせᅉࢆᘓ≀ᘓタᚋ䛾ᆅୗእቨእഃ䠄ୖ䜚䠅
10᫂ࡽ࠿࡟ࡍࡿ࡜࡜ࡶ࡟㸪ᮏࢣ࣮ࢫ࡜ࡣ␗࡞ࡿ㜵᣺ᮦࢆᘓ≀ᘓタᚋ䛾ᆅୗእቨෆഃ䠄ୗ䜚䠅⏝࠸ࡓ㜵᣺ᆅ୰ቨࢆ᥇⏝ࡋࡓᘓ≀࡟࠾࠸࡚᣺ືࢹ࣮ࢱᘓ≀ᘓタᚋ䛾ᆅୗእቨእഃ䠄ୗ䜚䠅
0ࢆ཰㞟࣭⵳✚ࡋ㸪ࡼࡾ㐺ษ࡞᣺ື㐽᩿ᛶ⬟ホ౯᪉ἲࡢ

8

16

31.5

63

125

250

1/3䜸䜽䝍䞊䝤䝞䞁䝗୰ᚰ࿘Ἴᩘ䠄䠤䡖䠅☜❧ࢆ᳨ウࡍࡿࠋ

ᅗ 9 ᘓ≀㌣య᪋ᕤᚋࡢᆅୗእቨෆ㒊ഃ㸦࡜እ㒊ഃ㸦

ᐃⅬ 3㸧

ᐃⅬ 3㸧ࡢ᣺ືຍ㏿ᗘࣞ࣋ࣝ᭱኱್

ࡢᖹᆒ್ཧ⪃ᩥ⊩
1㸧 ᓥᓮಇஓ㸸ᆅ୰㐃⥆ቨ㸦ᒣ␃ࡵቨ㸧⏝㜵᣺ࢦ࣒ࡢ᪋ᕤ౛ 㡢㡪ᢏ⾡, No.130 (Vol.34 no.2), pp6-9, 2005.6
2㸧 ᒣᓮᾈ㸸Ⓨ◙࣏ࣜ࢜ࣞࣇ࢕ࣥ㸦EPO㸧ࢆ౑ࡗࡓᅛయ㡢ᑐ⟇஦౛ 㡢㡪ᢏ⾡, No.130 (Vol.34 no.2), pp10-13, 2005.6
3㸧 ⏣㔝ṇ඾㸸㜵᣺ᛶ⬟ࡢホ౯ 㡢㡪ᢏ⾡, No90㸪(Vol.22 no.2) pp.29-37, 1995.6
4㸧 ⥥㇂㔜つ࣭⁽ᡞᖾ㞝࣭㡲㈡ᫀ᫛㸸㜵᣺ᒙ࡟ࡼࡿᆅୗ㕲᣺ືࡢపῶຠᯝ࠾ࡼࡧ᣺ືࡢᅇࡾ㎸ࡳࡢᙳ㡪࡟ࡘ࠸࡚ ᪥ᮏ㡢㡪Ꮫ఍ㅮ₇
ㄽᩥ㞟, pp631-632, 1992.10
5㸧 ℈ཱྀ㞞⩏࣭୰⃝┿ྖ௚ 2 ྡ㸸㕲㐨࡟㏆᥋ࡍࡿᘓ≀ࡢᅛయ㡢పῶᡭἲ࡟㛵ࡍࡿᐇ㦂ⓗ◊✲ ᘓ⠏Ꮫ఍኱఍ㅮ₇᱾ᴫ㞟(㛵ᮾ), pp289-290,2001.9
6㸧 ᖹᯇ཭⪃㸸ᆅୗ㕲ᅛయ㡢ࡢⓎ⏕࣓࢝ࢽࢬ࣒࡜ண,పῶᑐ⟇ࡢ⪃࠼᪉ 㡢㡪ᢏ⾡,No.138 (Vol.36 no.2), pp1-8, 2007.6

7㸧 ቑ⏣₩㸸ᆅୗ㕲ᅛయ㡢࡟㛵ࡍࡿᆅ┙࡜ᘓ≀㌣య㛫ࡢ᣺ື㏱㐣ᦆኻ ᘓ⠏Ꮫ఍኱఍ㅮ₇᱾ᴫ㞟(໭㝣), pp197-198, 2011.9

A STUDY ON EVALUATION METHOD OF VIBRATION TRANSMISSION LOSS BY
VIBRATION-PROOFING MATERIARL THAT CONSTITUTE VIBRATION ISOLATION TYPEUNDERGROUND WALL
T.Kaise, and S.Inoue
Vibration-proof material that constitute vibration isolation type underground wall is evaluated difference of vibration
acceleration level which is measured in each of underground exterior wall after building construction and earth retaining wall
before building construction as vibration transmission (Evaluation Method 1) in many cases. Concerning this Method, thefinding of a precedent study is showed that the vibration transmission evaluated by Method 1 is overestimated in comparison
with how to evaluate difference of vibration acceleration level which is measured simultaneously underground exterior walland earth retaining wall after building construction as vibration transmission (Evaluation Method 2) .
  Therefore, we conducted vibration measurement in the implementation field it is intended to confirm the actual
phenomena, employing a vibration proof underground walls, to obtain the vibration isolation performance of the evaluation ofeach method were compared.
As a result, it was considered that the vibration transmission evaluated by Method 1 was overestimated in comparison
with Method 2 in proof field as well as the finding of previous study.

56