緩沖防震橡膠墊塊廠家
橡膠墊塊是由多層橡膠片硫化粘合而成一種普通橡膠支座產(chǎn)品,這種產(chǎn)品具有足夠的豎向剛度,能夠?qū)⒅ё喜繕?gòu)造的反力可靠的傳遞給墩臺(tái),支座具有良好的彈性,以應(yīng)對(duì)橋梁的梁端的轉(zhuǎn)動(dòng);又有較大的剪切變形能力，以滿足上部構(gòu)造的水平位移。
The rubber pad is composed of multilayer rubber vulcanization bonding a common rubber bearing products, this product has enough vertical stiffness, can force reliable transfer to the pier upper bearing structure, bearing has good flexibility, rotating beam end in response to the bridge; and a larger shear debation capacity in order to meet, the horizontal displacement of superstructure.
橡膠墊塊的布置
Arrangement of rubber cushion block
橡膠墊塊的布置主要和橋梁的結(jié)構(gòu)形式有關(guān)。通常在布置支座時(shí)需要考慮以下的基本原則:
The layout of the rubber pad is mainly related to the structural b of the bridge. The following basic principles should usually be taken into consideration in the arrangement of support:
(1)上部結(jié)構(gòu)是空間結(jié)構(gòu)時(shí)，橡膠墊塊應(yīng)能同時(shí)適應(yīng)橋梁順橋向(X方向)和橫橋向(Y方向)的變形;
緩沖防震橡膠墊塊廠家
(1) when the superstructure is a spatial structure, the rubber pad should be able to adapt to the debation of the bridge direction (X direction) and the transverse bridge (Y direction).
(2)橡膠墊塊必須能可靠的傳遞垂直和水平反力;
(2) the rubber pad must be able to reliably transfer the vertical and horizontal forces.
(3)橡膠墊塊應(yīng)使由于梁體變形所產(chǎn)生的縱向位移、橫向位移和縱、恒向轉(zhuǎn)角應(yīng)盡可能不受約束;
(3) the rubber block should make the longitudinal displacement, the lateral displacement and the longitudinal and constant angle due to the debation of the beam body as far as possible.
(4)當(dāng)橋梁位于平坡上，固定橡膠墊塊宜設(shè)在主要行車方向的前端橋臺(tái)上;
(4) when the bridge is located on the flat slope, the fixed rubber pad should be located on the front end abutment of the main driving direction.
(5)橡膠墊塊宜設(shè)置在具有較大墊塊反力的地方;
(5) the rubber pad should be set in a place with large counterforce.
(6)在同一橋墩上的幾個(gè)橡膠墊塊應(yīng)具有相近的轉(zhuǎn)動(dòng)剛度;
(6) several rubber b blocks on the same pier should have similar rotational stiffness.
總之，橋梁橡膠墊塊的布置原則是既要便于傳遞支座反力，又要使橡膠墊塊能充分適應(yīng)梁體的自由變形。
In a word, the arrangement principle of bridge rubber pad is not only to transfer the support back force, but also to make the rubber pad fully adapt to the free debation of the beam.
緩沖防震橡膠墊塊廠家
橡膠墊塊的安裝
The installation of rubber pad
(1)在墊塊安裝之前應(yīng)對(duì)支座的安裝位置進(jìn)行測(cè)量檢驗(yàn)，支座安裝平面應(yīng)和支座的滑動(dòng)平面或滾動(dòng)平面平行，其平行度的偏差不宜超過(guò)2‰。
(1) the installation b of the bearing should be measured and checked before installing the cushion block. The bearing installation plane should be parallel to the sliding plane or rolling plane of the bearing, and the deviation of parallelism should not exceed 2 per thousand.
(2)墊塊安裝前應(yīng)對(duì)活動(dòng)支座頂、底板的相對(duì)位置進(jìn)行檢查。
(2) before the pad is installed, the relative b of the top and floor of the movable support should be checked.
(3)墊塊安裝后，滾動(dòng)和滑動(dòng)平面應(yīng)水平，其與理論平面的斜度不大于2‰。支座上、下板中心應(yīng)對(duì)中，其偏差不大于2‰。
(3) after the block is installed, the rolling and sliding plane should be horizontal, and the slope of the plane is not more than 2 per thousand with the theoretical plane. The deviation of the upper and lower plate centers is not more than 2 per thousand.
(4)為保證墊塊安裝平整，一般應(yīng)在支座底面與職稱墊石頂面之間，搗筑20~50mm厚的干硬性無(wú)收縮砂漿墊層。
(4) in order to ensure the smooth installation of the pad, the dry and hard shrinkage mortar cushion of 20~50mm thick should be rammed between the bottom of the support and the top of the title stone.