ĐỀ TÀI: BÀI GIẢNG MÔN HỌC CHUYÊN ĐỀ XỬ LY NỀN MÓNG

BOÄ XAÂY DÖÏNG

TRÖÔØNG ÑAÏI HOÏC KIEÁN TRUÙC TP. HOÀ CHÍ MINH

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BAØI GIAÛNG MOÂN HOÏC

CHUYEÂN ÑEÀ XÖÛ LYÙ NEÀN MOÙNG

30 tieát

Bieân soaïn : TS. Toâ Vaên Laän

Naêm 2007

[FONT=VNI-Times]MUÏC LUÏC

[FONT=VNI-Times]Taøi lieäu tham khaûo :[FONT=VNI-Times]4

[FONT=VNI-Times]Chöông 1[FONT=VNI-Times]5

[FONT=VNI-Times]NHÖÕNG ÑAËC ÑIEÅM CUÛA ÑAÁT YEÁU[FONT=VNI-Times] . [FONT=VNI-Times]5

[FONT=VNI-Times]1.1[FONT=VNI-Times]KHAÙI NIEÄM VEÀ ÑAÁT YEÁU[FONT=VNI-Times].[FONT=VNI-Times] . [FONT=VNI-Times]5

[FONT=VNI-Times]1.1.1[FONT=VNI-Times]Veà ñònh tính [FONT=VNI-Times]5

[FONT=VNI-Times]1.1.2[FONT=VNI-Times]Veà ñònh löôïng [FONT=VNI-Times]5

[FONT=VNI-Times]1.2[FONT=VNI-Times]ÑAËC ÑIEÅM CUÛA MOÄT SOÁ LOAÏI ÑAÁT YEÁU[FONT=VNI-Times].[FONT=VNI-Times] . [FONT=VNI-Times]6

[FONT=VNI-Times]1.2.1[FONT=VNI-Times]Ñaát seùt yeáu.[FONT=VNI-Times]6

[FONT=VNI-Times]1.2.1.1[FONT=VNI-Times]Haït seùt vaø caùc khoaùng vaät seùt.[FONT=VNI-Times] . [FONT=VNI-Times]6

[FONT=VNI-Times]1.2.1.2[FONT=VNI-Times]Lieân keát caáu truùc vaø söùc choáng caét cuûa ñaát seùt[FONT=VNI-Times] . [FONT=VNI-Times]7

[FONT=VNI-Times]1.2.1.3[FONT=VNI-Times]Caùc ñaëc ñieåm khaùc cuûa ñaát seùt yeáu[FONT=VNI-Times]9

[FONT=VNI-Times]1.2.2[FONT=VNI-Times]Ñaát caùt yeáu.[FONT=VNI-Times]10

[FONT=VNI-Times]1.2.3[FONT=VNI-Times]Buøn, than buøn vaø ñaát than buøn[FONT=VNI-Times]11

[FONT=VNI-Times]1.2.4[FONT=VNI-Times]Ñaát ñaép[FONT=VNI-Times]11

[FONT=VNI-Times]1.3[FONT=VNI-Times]CAÙC GIAÛI PHAÙP XAÂY DÖÏNG COÂNG TRÌNH TREÂN ÑAÁT YEÁU[FONT=VNI-Times].[FONT=VNI-Times]12

[FONT=VNI-Times]1.3.1[FONT=VNI-Times]Giaûi phaùp keát caáu.[FONT=VNI-Times]12

[FONT=VNI-Times]1.3.2[FONT=VNI-Times]Caùc bieän phaùp xöû lyù neàn[FONT=VNI-Times].[FONT=VNI-Times] . [FONT=VNI-Times]12

[FONT=VNI-Times]1.3.3[FONT=VNI-Times]Caùc giaûi phaùp veà moùng[FONT=VNI-Times].[FONT=VNI-Times]12

[FONT=VNI-Times]Chöông 2 [FONT=VNI-Times]13

[FONT=VNI-Times]BIEÄN PHAÙP KEÁT CAÁU KHI XAÂY DÖÏNG COÂNG TRÌNH TREÂN NEÀN ÑAÁT YEÁU[FONT=VNI-Times] . [FONT=VNI-Times]13

[FONT=VNI-Times]2.1[FONT=VNI-Times]LÖÏA CHOÏN SÔ ÑOÀ KEÁT CAÁU.[FONT=VNI-Times] . [FONT=VNI-Times]13

[FONT=VNI-Times]2.1.1[FONT=VNI-Times]Loaïi keát caáu tuyeät ñoái cöùng [FONT=VNI-Times]13

[FONT=VNI-Times]2.1.2[FONT=VNI-Times]Loaïi keát caáu meàm . [FONT=VNI-Times]13

[FONT=VNI-Times]2.1.3[FONT=VNI-Times]Sô ñoà keát caáu coù ñoä cöùng giôùi haïn [FONT=VNI-Times]13

[FONT=VNI-Times]2.2[FONT=VNI-Times]BOÁ TRÍ KHE LUÙN.[FONT=VNI-Times] . [FONT=VNI-Times]15

[FONT=VNI-Times]2.3[FONT=VNI-Times]THIEÁT KEÁ GIAÈNG MOÙNG VAØ GIAÈNG TÖÔØNG.[FONT=VNI-Times]16

[FONT=VNI-Times]2.3.1[FONT=VNI-Times]Tính toaùn coát theùp giaèng theo phöông phaùp ñôn giaûn.[FONT=VNI-Times] . [FONT=VNI-Times]17

[FONT=VNI-Times]2.3.2[FONT=VNI-Times]Tính toaùn coát theùp giaèng theo phöông phaùp cuûa B.I. Ñalmatov [FONT=VNI-Times]18

[FONT=VNI-Times]2.4[FONT=VNI-Times]CAÁU TAÏO GOÁI TÖÏA CÖÙNG.[FONT=VNI-Times]21

[FONT=VNI-Times]2.5[FONT=VNI-Times]CHOÏN LOAÏI MOÙNG VAØ CHIEÀU SAÂU CHOÂN MOÙNG.[FONT=VNI-Times] . [FONT=VNI-Times]22

[FONT=VNI-Times]2.5.1[FONT=VNI-Times]Choïn loaïi moùng [FONT=VNI-Times]22

[FONT=VNI-Times]2.5.2[FONT=VNI-Times]Choïn chieàu saâu choân moùng . [FONT=VNI-Times]22

[FONT=VNI-Times]Chöông 3[FONT=VNI-Times]24

[FONT=VNI-Times]CAÙC PHÖÔNG PHAÙP GIA COÁ, CAÛI TAÏO ÑAÁT NEÀN[FONT=VNI-Times]24

[FONT=VNI-Times]3.1[FONT=VNI-Times]ÑEÄM CAÙT.[FONT=VNI-Times]24

[FONT=VNI-Times]3.1.1[FONT=VNI-Times]Phaïm vi aùp duïng.[FONT=VNI-Times]24

[FONT=VNI-Times]3.1.2[FONT=VNI-Times]Tính toaùn ñeäm caùt.[FONT=VNI-Times]24

[FONT=VNI-Times]3.1.3[FONT=VNI-Times]Thi coâng ñeäm caùt.[FONT=VNI-Times] . [FONT=VNI-Times]26

[FONT=VNI-Times]3.1.4[FONT=VNI-Times]Trình töï thieát keá moùng söû duïng ñeäm caùt.[FONT=VNI-Times] . [FONT=VNI-Times]27

[FONT=VNI-Times]3.2[FONT=VNI-Times]COÏC CAÙT.[FONT=VNI-Times] . [FONT=VNI-Times]27

[FONT=VNI-Times]3.2.1[FONT=VNI-Times]Ñaëc ñieåm vaø phaïm vi öùng duïng.[FONT=VNI-Times] . [FONT=VNI-Times]27

[FONT=VNI-Times]3.2.2[FONT=VNI-Times]Tính toaùn vaø thieát keá coïc caùt.[FONT=VNI-Times]28

[FONT=VNI-Times]3.2.3[FONT=VNI-Times]Thi coâng coïc caùt.[FONT=VNI-Times] . [FONT=VNI-Times]29

[FONT=VNI-Times]3.3[FONT=VNI-Times]COÏC XI MAÊNG TROÄN ÑAÁT.[FONT=VNI-Times] . [FONT=VNI-Times]30

[FONT=VNI-Times]3.3.1[FONT=VNI-Times]Phaïm vi aùp duïng.[FONT=VNI-Times]30

[FONT=VNI-Times]3.3.2[FONT=VNI-Times]Moâ taû veà coâng ngheä.[FONT=VNI-Times] . [FONT=VNI-Times]30

[FONT=VNI-Times]3.3.3[FONT=VNI-Times]Ví duï veà coâng trình xöû lyù coïc xi maêng ñaát.[FONT=VNI-Times]33

[FONT=VNI-Times]3.4[FONT=VNI-Times]NEÙN TRÖÔÙC BAÈNG TAÛI TROÏNG TÓNH.[FONT=VNI-Times] . [FONT=VNI-Times]37

[FONT=VNI-Times]3.4.1[FONT=VNI-Times]Ñaëc ñieåm vaø phaïm vi öùng duïng.[FONT=VNI-Times] . [FONT=VNI-Times]37

[FONT=VNI-Times]3.4.2[FONT=VNI-Times]Ñieàu kieän veà ñòa chaát coâng trình.[FONT=VNI-Times] . [FONT=VNI-Times]37

[FONT=VNI-Times]3.4.3[FONT=VNI-Times]Tính toaùn gia taûi tröôùc.[FONT=VNI-Times]38

[FONT=VNI-Times]3.4.4[FONT=VNI-Times]Bieän phaùp thi coâng.[FONT=VNI-Times]39

[FONT=VNI-Times]3.5[FONT=VNI-Times]GIEÁNG CAÙT.[FONT=VNI-Times] . [FONT=VNI-Times]39

[FONT=VNI-Times]3.5.1[FONT=VNI-Times]Ñaëc ñieåm vaø phaïm vi öùng duïng.[FONT=VNI-Times] . [FONT=VNI-Times]39

[FONT=VNI-Times]3.5.2[FONT=VNI-Times]Tính toaùn vaø thieát keá gieáng caùt.[FONT=VNI-Times] . [FONT=VNI-Times]40

[FONT=VNI-Times]3.5.3[FONT=VNI-Times]Thi coâng gieáng caùt.[FONT=VNI-Times]42

[FONT=VNI-Times]3.6[FONT=VNI-Times]GIA COÁ NEÀN BAÈNG BAÁC THAÁM.[FONT=VNI-Times] . [FONT=VNI-Times]42

[FONT=VNI-Times]3.6.1[FONT=VNI-Times]Phaïm vi aùp duïng.[FONT=VNI-Times]42

[FONT=VNI-Times]3.6.2[FONT=VNI-Times]Moâ taû veà coâng ngheä.[FONT=VNI-Times] . [FONT=VNI-Times]42

[FONT=VNI-Times]3.6.3[FONT=VNI-Times]ÖÙng duïng trong thöïc teá.[FONT=VNI-Times]43

[FONT=VNI-Times]3.7[FONT=VNI-Times]GIA COÁ NEÀN BAÈNG VAÛI ÑÒA KYÕ THUAÄT.[FONT=VNI-Times]44

[FONT=VNI-Times]3.7.1[FONT=VNI-Times]Gia c[FONT=VNI-Times]ố[FONT=VNI-Times] n[FONT=VNI-Times]ề[FONT=VNI-Times]n đư[FONT=VNI-Times]ờ[FONT=VNI-Times]ng.[FONT=VNI-Times]44

[FONT=VNI-Times]3.7.2[FONT=VNI-Times]Gia c[FONT=VNI-Times]ố[FONT=VNI-Times] tư[FONT=VNI-Times]ờ[FONT=VNI-Times]ng ch[FONT=VNI-Times]ắ[FONT=VNI-Times]n đ[FONT=VNI-Times]ấ[FONT=VNI-Times]t.[FONT=VNI-Times] . [FONT=VNI-Times]45

[FONT=VNI-Times]Chöông 4[FONT=VNI-Times]47

[FONT=VNI-Times]NGUYEÂN TAÉC THIEÁT KEÁ MOÄT SOÁ LOAÏI MOÙNG COÏC[FONT=VNI-Times] . [FONT=VNI-Times]47

[FONT=VNI-Times]4.1[FONT=VNI-Times]THIEÁT KEÁ MOÙNG COÏC KHOAN NHOÀI.[FONT=VNI-Times] . [FONT=VNI-Times]47

[FONT=VNI-Times]4.1.1[FONT=VNI-Times]Ñaëc ñieåm phaïm vi aùp duïng.[FONT=VNI-Times] . [FONT=VNI-Times]47

[FONT=VNI-Times]4.1.2[FONT=VNI-Times]Thieát keá moùng coïc khoan nhoài.[FONT=VNI-Times]48

[FONT=VNI-Times]4.1.3[FONT=VNI-Times]Thi coâng moùng coïc khoan nhoài.[FONT=VNI-Times]56

[FONT=VNI-Times]4.1.4[FONT=VNI-Times]Kieåm tra chaát löôïng coïc khoan nhoài [FONT=VNI-Times]65

[FONT=VNI-Times]4.1.5[FONT=VNI-Times]Caùc söï coá thöôøng gaëp vaø caùch xöû lyù [FONT=VNI-Times]71

[FONT=VNI-Times]4.2[FONT=VNI-Times]THIEÁT KEÁ MOÙNG COÏC BARET[FONT=VNI-Times].[FONT=VNI-Times]72

[FONT=VNI-Times]4.2.1[FONT=VNI-Times]Khaùi nieäm . [FONT=VNI-Times]72

[FONT=VNI-Times]4.2.2[FONT=VNI-Times]Khaûo saùt ñòa chaát cho thieát keá vaø thi coâng moùng coïc bareùt.[FONT=VNI-Times]73

[FONT=VNI-Times]4.2.3[FONT=VNI-Times]Söùc chòu taûi cuûa coïc baret.[FONT=VNI-Times]74

[FONT=VNI-Times]4.2.4[FONT=VNI-Times]Thieát keá coïc baret.[FONT=VNI-Times] . [FONT=VNI-Times]76

[FONT=VNI-Times]4.2.5[FONT=VNI-Times]Thieát keá ñaøi coïc.[FONT=VNI-Times] . [FONT=VNI-Times]78

[FONT=VNI-Times]4.2.6[FONT=VNI-Times]Thi coâng coïc baret.[FONT=VNI-Times] . [FONT=VNI-Times]80

[FONT=VNI-Times]4.3[FONT=VNI-Times]TƯ[FONT=VNI-Times]Ờ[FONT=VNI-Times]NG TRONG Đ[FONT=VNI-Times]Ấ[FONT=VNI-Times]T ([FONT=VNI-Times]TÖÔØNG CÖØ - [FONT=VNI-Times]TƯ[FONT=VNI-Times]Ờ[FONT=VNI-Times]NG C[FONT=VNI-Times]Ọ[FONT=VNI-Times]C[FONT=VNI-Times] B[FONT=VNI-Times]Ả[FONT=VNI-Times]N)[FONT=VNI-Times].[FONT=VNI-Times] . [FONT=VNI-Times]83

[FONT=VNI-Times]4.3.1[FONT=VNI-Times]Khaùi nieäm . [FONT=VNI-Times]83

[FONT=VNI-Times]4.3.2[FONT=VNI-Times]Phaïm vi aùp duïng . [FONT=VNI-Times]83

[FONT=VNI-Times]4.3.3[FONT=VNI-Times]Moâ taû coâng ngheä [FONT=VNI-Times]85

[FONT=VNI-Times]4.3.4[FONT=VNI-Times]Thieát keá töôøng trong ñaát . [FONT=VNI-Times]86

[FONT=VNI-Times]4.4[FONT=VNI-Times]THIEÁT KEÁ MOÙNG COÏC TRAØM.[FONT=VNI-Times]89

[FONT=VNI-Times]4.4.1[FONT=VNI-Times]Vaät lieäu coïc traøm.[FONT=VNI-Times] . [FONT=VNI-Times]89

[FONT=VNI-Times]4.4.2[FONT=VNI-Times]Ñaëc ñieåm, phaïm vi aùp duïng.[FONT=VNI-Times]90

[FONT=VNI-Times]4.4.3[FONT=VNI-Times]Thieát keá moùng coïc traøm.[FONT=VNI-Times] . [FONT=VNI-Times]91

[FONT=VNI-Times]Chöông 5 [FONT=VNI-Times]95

[FONT=VNI-Times]COÂNG TAÙC KHAÛO SAÙT TRONG XAÂY DÖÏNG [FONT=VNI-Times]95

[FONT=VNI-Times]5.1[FONT=VNI-Times]MUÏC ÑÍCH, NOÄI DUNG CUÛA COÂNG TAÙC KHAÛO SAÙT ÑÒA CHAÁT.[FONT=VNI-Times] . [FONT=VNI-Times]95

[FONT=VNI-Times]5.1.1[FONT=VNI-Times]Muïc ñích . [FONT=VNI-Times]95

[FONT=VNI-Times]5.1.2[FONT=VNI-Times]Noäi dung chính cuûa coâng taùc khaûo saùt ñòa chaát . [FONT=VNI-Times]95

[FONT=VNI-Times]5.1.3[FONT=VNI-Times]Yeâu caàu kyõ thuaät (do ngöôøi chuû trì keát caáu laäp).[FONT=VNI-Times]95

[FONT=VNI-Times]5.2[FONT=VNI-Times]KHAÛO SAÙT CHO THIEÁT KEÁ VAØ THI COÂNG MOÙNG COÏC.[FONT=VNI-Times]96

[FONT=VNI-Times]5.2.1[FONT=VNI-Times]Phöông aùn kyõ thuaät khaûo saùt [FONT=VNI-Times]96

[FONT=VNI-Times]5.2.2[FONT=VNI-Times]Noäi dung khaûo saùt . [FONT=VNI-Times]96

[FONT=VNI-Times]5.2.3[FONT=VNI-Times]Khoái löôïng coâng taùc khaûo saùt [FONT=VNI-Times]96

[FONT=VNI-Times]5.3[FONT=VNI-Times]KHAÛO SAÙT CHO THIEÁT KEÁ NHAØ CAO TAÀNG.[FONT=VNI-Times]98

[FONT=VNI-Times]5.3.1[FONT=VNI-Times]Thí nghieäm hieän tröôøng.[FONT=VNI-Times] . [FONT=VNI-Times]98

[FONT=VNI-Times]5.3.2[FONT=VNI-Times]Thí nghieäm trong phoøng.[FONT=VNI-Times]98

[FONT=VNI-Times]5.4[FONT=VNI-Times]XÖÛ LYÙ SOÁ LIEÄU KHAÛO SAÙT ÑÒA CHAÁT VAØ THÍ NGHIEÄM.[FONT=VNI-Times]99

[FONT=VNI-Times]5.4.1[FONT=VNI-Times]Nguyeân taéc chung.[FONT=VNI-Times]99

[FONT=VNI-Times]5.4.2[FONT=VNI-Times]Xaùc ñònh trò tieâu chuaån vaø trò tính toaùn cuûa ñaát.[FONT=VNI-Times]99

[FONT=VNI-Times]5.4.3[FONT=VNI-Times]Yeâu caàu veà soá löôïng thí nghieäm caùc ñaëc tröng cuûa ñaát.[FONT=VNI-Times]102

[FONT=VNI-Times]Taøi lieäu tham khaûo :

[FONT=VNI-Times]1. Hoaøng Vaên Taân, Traàn Ñình Ngoâ, Phan Xuaân Tröôøng, Phaïm Xuaân, Nguyeãn Haûi; Nhöõng phöông phaùp xaây döïng coâng trình treân neàn ñaát yeáu. NXB Khoa hoïc vaø kyõ thuaät, Haø Noäi, 1973.

[FONT=VNI-Times]2. Nguyeãn Vaên Quaûng; Neàn moùng nhaø cao taàng. NXB Khoa hoïc vaø kyõ thuaät, Haø Noäi, 2003.

[FONT=VNI-Times]3. TCXD 45 : 1978, Tieâu chuaån thieát keá neàn nhaø vaø coâng trình.

[FONT=VNI-Times]4. TCXD 205 : 1998, Moùng coïc – Tieâu chuaån thieát keá.

[FONT=VNI-Times]5. TCXDVN 326 : 2004, Coïc khoan nhoài – Tieâu chuaån thi coâng vaø nghieäm thu.

[FONT=VNI-Times]6. TCVN 4419-1987, Khaûo saùt cho xaây döïng