Nghiên cứu công nghệ của hệ thống thi công mặt đường bê tông xi măng bằng phương pháp san đầm trục lăn

I H C QU C GIA TP.HCM IH NG C A H TH NG B M TR TH H 2013 I H C QU C GIA TP.HCM IH NG C A H TH NG B M TR THU TB N TH NG D N KHOA H C : PGS.TS NGUY N H H 2013 NG, C TP HCM 2 2: TP HCM P 03/10/1983 60.52.10 2011 11300414 N: - - - Th 21/01/2013 : 21/06/2013 I: II : III : n M CL C & THI T B C NG BTXM Chu n b n Tr n chuy 3 3.1 m 3.2 m p pha c t X nh i 13 m t 22 B o v b m 26 c bi t 28 29 THI T K C A VI T NG 2.1 Y u t 2.1.1 31 2.1.2 t li u 33 2.1.3 c 34 2.1.4 35 2.2 Chu u k t c u c 2.2.1 K t c u m 2.2.2 B 2.2.3 ng BTXM ng BTXM 38 mc ng BTXM 39 c a BTXM 40 HVTH : 2.2.4 t gi at 40 2.2.5 Kho 42 2.2.6 Chi u r ng c i v i v t li 2.2.7 C u t 2.3 2.3.1 Chuy ct ng h 43 c bi t 43 t c a vi ng ng rung 45 2.3.2 Tham s 45 2.3.3 S truy 48 2.3.4 49 2.3.5 M ng 53 2.4 2.4.1 ng 54 2.4.2 Rung b m t 58 2.4.3 Rung c p pha 59 2.4.4 61 KHUNG 3.1 Tham kh tb m 3.1.1 H 3.1.1.1 Bid - Well 2450 64 3.1.1.2 Gomaco C450 65 3.1.2 C 3.1.2.1 3.1.2.1.1 Ki 3.1.2.2 n y l c 66 66 68 3.1.2.2.1 Patent US 5435523 68 HVTH : 3.1.2.2.2 Patent US6499722B1 69 3.1.3 C n 3.1.3.1 Patent US 3738763 71 3.1.3.2 Patent US 4068970 72 3.2 H 3.2.1 k t c u thi t k k t c u khung 3.2.1.1 Gi i thi u t ng quan v k t c 73 3.2.1.2 74 3.2.1.3 74 3.2.1.4 76 01 76 02 79 82 3.2.1.5 86 3.2.1.6 88 3.2.2 Th ng s 3.2.2.1 Gi i thi 88 88 3.2.2.3 Thi t k 90 3.2.2.4 Ki m tra b 91 3.2.3 Th ng s c n 3.2.3 Gi i thi u v c 3.2.3.2 n 93 93 94 95 96 3.2.3.6 Ki m tra l i ng su 3.2.3.7 Thi t k b truy 98 h 99 HVTH : 3.2.3.8 Thi t k b truy n 101 3.3 K t lu n RUNG C AB NG M 4.1 Ki rung c a b 4.1.1 m ki m tra 103 4.1.2 K t qu 103 4.2 Ki m tra ch 4.2.1 Ki s t 112 4.2.2 Ki ch 112 4.3 K t lu n K T LU N NGH U THAM KH O PH L C HVTH : K t qu :2 108 K t qu 109 4.3 Ki m tra ch 4.3.1 Ki s t Thi t b ki m tra : t c : h = 300mm; D = 200mm; d = 100mm M u th :3l n K t qu : Th t s t 4.3.2 Ki L n1 L n2 L n3 8cm 5cm 1cm ch M u th c nghi l L y m u th ng v ph s t 5cm); C p ph s p ph s t 1) K t qu : M u th i 110 s t 8cm); C p STT u m u Tu i m u th ch (KN) (MPa) C p ph i 07 187.9 8.4 C p ph i 07 160.2 7.1 C p ph i 07 165.8 7.4 M u th STT T i tr ng i i u m u th Tu i m u C p ph i C p ph i C p ph i T i tr ng i 28 28 28 ch (KN) (MPa) (MPa) 268.0 11.9 12.1 275.6 12.2 225.6 10.0 248.3 11.0 237.4 10.6 245.6 10.9 10.5 10.7 M u th c STT u m u th C p ph i L ho i m u khoan (KN) (MPa) (MPa) 55.48 11.07 10.5 111 hi ng u C p ph i 59.93 11.99 11.5 C p ph i 52.96 10.54 10.0 C p ph i 50.62 10.10 9.8 C p ph i 51.62 10.30 9.8 C p ph i 44.66 8.91 8.5 C p ph i 44.73 9.30 8.9 C p ph i 51.92 10.39 9.9 C p ph i 55.68 11.08 10.6 4.4 K t lu n 4.4 rung K t qu t: Gi m ch n gi a ph n kh m cao su (S STT K t qu ng : 12) A (mm) (rad/s) (1)(mm) 209 0.085 0.075 262 0.1 0.09 297 0.11 0.1 366 0.153 0.14 419 0.163 0.15 c t l n : Gi m ch (4)(mm) (2)(mm) m cao su (S STT 0.06 ng :12) A (mm) (rad/s) (1)(mm) (2)(mm) 297 0.03 0.0002 112 K t qu 04) c t l n 2: Gi m ch n cao su (S STT (S ng : A (mm) (rad/s) (1)(mm) (2)(mm) (4)(mm) 297 0.1 0.002 0.02 T k t qu nh i chi u v i k t qu s b v t li n qua k t c u kim lo i c a thi t m Nh ng h s c n c a ng v i v t li u n qua l c n nh t c n c t li uy ut ng n nh t c c n sai s gi c Sau t m th c t m ch n c c cao ng th c t c ac m tr y k t qu t th c nghi m pv i Vi c ng c a c V t cho c m tr ng rung c i thi u qu c c a thi t b c a thi t b t i ct ng c m Ta s d t qu nh m 4.4.2 Ch a m u th ng v s ng v a m u th khoan t i ch theo b ng sau : s 113 STT M u th Sai l ch a m u th 28 i hi ng TB c a m u khoan C p ph i 12.1 10.7 11.6% C p ph i 10.5 9.4 10.5% C p ph i 10.7 9.8 8.4% T b a m u th t t : 9.8MPa t i 12.1MPa, theo TCVN 6025 u th t uc m v i m u th gi i n th ng tay c p ph i h n h ng th c t n t i vi c sai l ch t l c p ph ch c a d ng c p ph i a m u th a m u th ch t 8.4% t ym u ki n b n i th c t gi cv tm ng v t m n 14TCN 59a v t m u th c t c p ph i thi t k v u Trong th c t c p ph i c p v t b 14TCN 59 2002 Thi b t sai l ch gi ng i ph i l tm uc a ng t thi t b m ng s d t b v n chuy n VD : theo 2- il 114 K T LU N NGH K t lu n Trong su ta ng k t lu n sau : Ch ng c m ph thu c r t l m, thi t b n thi t b iv d m ch mb m t kho ng u t chi ta ph i k t h p v i thi t b i v i thi t b m tr d b tk h tb.H d ng modul chu n k t h p v i b r khung gia c vi c b k th ph ck th tb u m b o cho a thi t b ch iv ih m b o cho vi c a thi t b m iv ic 5m/ph t qu b u ch nh cao a h khung thi t b ng BTXM m tr c l H khung thi t b (1700x600)mm, Kh c m t c t ngang : (W x H)mm = l n nh t 20m G H khung gia c c : (H x W x L)mm = (1200x1700x15000)mm H i kh tc i t 8m t i 16 i thay th so v i thi t k Kh m t Kh 17m t t bu c ph khung gia c u ch nh thi t b tr n g m c m, m i c ng n N = 3Kw, n = 20v/ph T k t qu t b c a thi t b i chi u v i k t qu m th c t iv i m, s i gi m ch ng gi m ch tb s n qua l c n nh t c V ct ch iv n qua k t c u kim lo i c a thi t b m Nh ng h s c n c a v t li ng v i v t li n c t li u u qu c c a thi t b c a thi t b t ng c m m, ta ti ac m ng k t qu t ng h p sau : ng m Ta s d ns ym ym ub t qu m STT M u th a m u th 28 i hi ng TB c a m u khoan (MPa) (MPa) C p ph i 12.1 10.7 C p ph i 10.5 9.4 C p ph i 10.7 9.8 T b a m u th t t : 9.8MPa t i 12.1MPa, theo TCVN 6025 u th c u c m v i m u th n th ng tay c p ph i h n h th c t n t i vi c sai l ch t l c p ph d ng c p ph i a m u th a m u th ch t 8.4% t ym u ki n b n 14TCN 59a v t m u th c t c p ph i thi t k v t u Trong th c t c p ph p v t b 14TCN 59 2002 Thi b t s il n gi i ng ch c a 15cm) l n i th c t gi cv t m ng v t m u sai l ch gi ng i ph i l tm uc a ng t thi t b m ng d t b v n chuy n VD : theo 2- Ki n ngh u ki n v v t o thi t b m ts tk c l a ch n th nghi m : ng th y l u n vi thi t b d n b ng th y l c : momen kh t i t t, k t c u nh g n ti n cho vi c b u n V thi t k h th ng th y l u n t t c uc a thi t b Do k t qu th c nghi m c a thi t b ch ki m tra th c nghi m thi t b v m c s ng v n i U THAM KH O [1] Huỳnh Văn Hoàng, Đào trọng Thường Tính toán máy trục Học Kỹ Thuật, 1975 [2] , [3] ng m c, ng , 2009 u t tb n i , 2004 [4] PGS,TS.Nguy n H b t i h c qu c gia HCM, 2008 [5] Nguy u d t k thu t b n khoa h t, 2004 [6] Nguy tc H [7] PGS.TS.Nguy t b n GTVT i, 2005 [8] Reported by ACI Committee 309 ACI 309.1 R-93, 1993 [9] www.freepatentonline.com [10] PGS.TS- Nguy d n xu t b i, 2004 [11] PGS.TSh tb t b n khoa i, 2004 n thi t k m i, 4/2008 ng c i khoa h c c ng Vi t nam, [13] ng c i khoa h c c ng Vi t nam, i, 4/2008 [14] [15] [16] nh s [17] nh ng : L y m u, ch t b ng l y m [18] [19] [20] TCXD c tr [21] [22] [23] lr F.Fuchs (Belgian Road Research Center),lr A Jasienki Road pavements of cement concrete [24] B g n t i, ng n khoa h [25] PGS.TS.Nguy GTVT, 3/2000 n n t i, 2005 [26] Cement concrete & Aggregates Australia 2004 [27] GS.TS.Nguy n T tb c, 2003 t b n giao [28] -destructive ,Vienna, 2002 [29] 22TCN223- n thi t k ng c B GTVT, 7/1995 [30] Ths Nguy n H u Qu ng, Ths Ph K t c u kim lo [31] Nguy n H u L n H ng c p chi ti Minh, 2010 S c b n v t li u k thu t, 1998 [33] 14TCN 59 2002 u k thu yl i m thu K tc NN PTNT, 2002 t PH L C Ph l c 1: n v thi t k c a c , Khung n HVTH : ... b ng thi t b thi n b m u qu d l iv i - Thi t b ng d ng linh ho xe, n ng N mb 2.M u, thi t k ph ng p b di chuy u k thu c nghi m h th ng thi t b m tr v h ng ng BTXM cho h n h u: u c a lu u thi. .. 20 18 18 p - - - 22 20 18 t gia c ch k x, s i cu i ph i d y t m t i thi - Tr thu i tr ng tr c thi t k i thi - Tr i thi - Tr i thi GVHD:PGS.TS NGUY N H cm 39 NG ... 2.2.V n chuy Xe thu p cho thi t b u su t m t thu 1-3 xe ph t b thi c s d ng ph bi n h n h p i v i xe b ng nh ng h i vi c thi c s d ng xe b c t ch t ph c tr 1-4 Xe b n thi h nh n chuy ng s d ng